From a1fb97a81bdb4670f510383abfc1d1bb4816ad17 Mon Sep 17 00:00:00 2001
From: Andres Freund <andres@anarazel.de>
Date: Wed, 19 Jan 2022 23:36:50 -0800
Subject: [PATCH v12 08/15] meson: Add meson based buildsystem

Author: Andres Freund <andres@anarazel.de>
Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Author: Peter Eisentraut <peter@eisentraut.org>
Author: Thomas Munro <thomas.munro@gmail.com>
Author: John Naylor <john.naylor@enterprisedb.com>
Author: Stone Tickle <lattis@mochiro.moe>
---
 src/include/catalog/meson.build               |  142 +
 src/include/meson.build                       |  174 +
 src/include/nodes/meson.build                 |   58 +
 src/include/parser/meson.build                |   14 +
 src/include/pg_config_ext.h.meson             |    7 +
 src/include/storage/meson.build               |   19 +
 src/include/utils/meson.build                 |   57 +
 src/common/meson.build                        |  174 +
 src/common/unicode/meson.build                |  107 +
 src/port/meson.build                          |  184 +
 src/port/win32ver.rc.in                       |   41 +
 config/meson.build                            |    4 +
 src/backend/access/brin/meson.build           |   12 +
 src/backend/access/common/meson.build         |   18 +
 src/backend/access/gin/meson.build            |   17 +
 src/backend/access/gist/meson.build           |   13 +
 src/backend/access/hash/meson.build           |   12 +
 src/backend/access/heap/meson.build           |   11 +
 src/backend/access/index/meson.build          |    6 +
 src/backend/access/meson.build                |   13 +
 src/backend/access/nbtree/meson.build         |   13 +
 src/backend/access/rmgrdesc/meson.build       |   26 +
 src/backend/access/spgist/meson.build         |   13 +
 src/backend/access/table/meson.build          |    6 +
 src/backend/access/tablesample/meson.build    |    5 +
 src/backend/access/transam/meson.build        |   31 +
 src/backend/backup/meson.build                |   13 +
 src/backend/bootstrap/meson.build             |   15 +
 src/backend/catalog/meson.build               |   44 +
 src/backend/commands/meson.build              |   51 +
 src/backend/executor/meson.build              |   67 +
 src/backend/foreign/meson.build               |    3 +
 src/backend/jit/llvm/meson.build              |   73 +
 src/backend/jit/meson.build                   |    3 +
 src/backend/lib/meson.build                   |   12 +
 src/backend/libpq/meson.build                 |   32 +
 src/backend/main/meson.build                  |    2 +
 src/backend/meson.build                       |  187 +
 src/backend/nodes/meson.build                 |   29 +
 src/backend/optimizer/geqo/meson.build        |   17 +
 src/backend/optimizer/meson.build             |    5 +
 src/backend/optimizer/path/meson.build        |   11 +
 src/backend/optimizer/plan/meson.build        |   10 +
 src/backend/optimizer/prep/meson.build        |    7 +
 src/backend/optimizer/util/meson.build        |   16 +
 src/backend/parser/meson.build                |   49 +
 src/backend/partitioning/meson.build          |    5 +
 src/backend/po/meson.build                    |    1 +
 src/backend/port/meson.build                  |   31 +
 src/backend/port/win32/meson.build            |    6 +
 src/backend/postmaster/meson.build            |   15 +
 src/backend/regex/meson.build                 |    8 +
 .../replication/libpqwalreceiver/meson.build  |   13 +
 src/backend/replication/logical/meson.build   |   14 +
 src/backend/replication/meson.build           |   45 +
 src/backend/replication/pgoutput/meson.build  |   11 +
 src/backend/rewrite/meson.build               |    9 +
 src/backend/snowball/meson.build              |   88 +
 src/backend/statistics/meson.build            |    6 +
 src/backend/storage/buffer/meson.build        |    7 +
 src/backend/storage/file/meson.build          |    8 +
 src/backend/storage/freespace/meson.build     |    5 +
 src/backend/storage/ipc/meson.build           |   20 +
 src/backend/storage/large_object/meson.build  |    3 +
 src/backend/storage/lmgr/meson.build          |   13 +
 src/backend/storage/meson.build               |    9 +
 src/backend/storage/page/meson.build          |    5 +
 src/backend/storage/smgr/meson.build          |    4 +
 src/backend/storage/sync/meson.build          |    4 +
 src/backend/tcop/meson.build                  |    8 +
 src/backend/tsearch/meson.build               |   21 +
 src/backend/utils/activity/meson.build        |   18 +
 src/backend/utils/adt/meson.build             |  122 +
 src/backend/utils/cache/meson.build           |   16 +
 src/backend/utils/error/meson.build           |    6 +
 src/backend/utils/fmgr/meson.build            |    8 +
 src/backend/utils/hash/meson.build            |    4 +
 src/backend/utils/init/meson.build            |    4 +
 .../utils/mb/conversion_procs/meson.build     |   36 +
 src/backend/utils/mb/meson.build              |    9 +
 src/backend/utils/meson.build                 |   17 +
 src/backend/utils/misc/meson.build            |   33 +
 src/backend/utils/mmgr/meson.build            |   10 +
 src/backend/utils/resowner/meson.build        |    3 +
 src/backend/utils/sort/meson.build            |    9 +
 src/backend/utils/time/meson.build            |    4 +
 src/fe_utils/meson.build                      |   29 +
 src/bin/initdb/meson.build                    |   39 +
 src/bin/initdb/po/meson.build                 |    1 +
 src/bin/meson.build                           |   20 +
 src/bin/pg_amcheck/meson.build                |   26 +
 src/bin/pg_amcheck/po/meson.build             |    1 +
 src/bin/pg_archivecleanup/meson.build         |   18 +
 src/bin/pg_archivecleanup/po/meson.build      |    1 +
 src/bin/pg_basebackup/meson.build             |   58 +
 src/bin/pg_basebackup/po/meson.build          |    1 +
 src/bin/pg_checksums/meson.build              |   20 +
 src/bin/pg_checksums/po/meson.build           |    1 +
 src/bin/pg_config/meson.build                 |   18 +
 src/bin/pg_config/po/meson.build              |    1 +
 src/bin/pg_controldata/meson.build            |   18 +
 src/bin/pg_controldata/po/meson.build         |    1 +
 src/bin/pg_ctl/meson.build                    |   21 +
 src/bin/pg_ctl/po/meson.build                 |    1 +
 src/bin/pg_dump/meson.build                   |   83 +
 src/bin/pg_dump/po/meson.build                |    1 +
 src/bin/pg_resetwal/meson.build               |   19 +
 src/bin/pg_resetwal/po/meson.build            |    1 +
 src/bin/pg_rewind/meson.build                 |   41 +
 src/bin/pg_rewind/po/meson.build              |    1 +
 src/bin/pg_test_fsync/meson.build             |   18 +
 src/bin/pg_test_fsync/po/meson.build          |    1 +
 src/bin/pg_test_timing/meson.build            |   18 +
 src/bin/pg_test_timing/po/meson.build         |    1 +
 src/bin/pg_upgrade/meson.build                |   39 +
 src/bin/pg_upgrade/po/meson.build             |    1 +
 src/bin/pg_verifybackup/meson.build           |   32 +
 src/bin/pg_verifybackup/po/meson.build        |    1 +
 src/bin/pg_waldump/meson.build                |   29 +
 src/bin/pg_waldump/po/meson.build             |    1 +
 src/bin/pgbench/meson.build                   |   42 +
 src/bin/pgevent/meson.build                   |   38 +
 src/bin/psql/meson.build                      |   74 +
 src/bin/psql/po/meson.build                   |    1 +
 src/bin/scripts/meson.build                   |   50 +
 src/bin/scripts/po/meson.build                |    1 +
 src/interfaces/libpq/meson.build              |  104 +
 src/interfaces/libpq/po/meson.build           |    1 +
 src/interfaces/libpq/test/meson.build         |   15 +
 src/pl/meson.build                            |    5 +
 src/pl/plperl/meson.build                     |   92 +
 src/pl/plperl/po/meson.build                  |    1 +
 src/pl/plpgsql/meson.build                    |    1 +
 src/pl/plpgsql/src/meson.build                |   83 +
 src/pl/plpgsql/src/po/meson.build             |    1 +
 src/pl/plpython/meson.build                   |   98 +
 src/pl/plpython/po/meson.build                |    1 +
 src/pl/tcl/meson.build                        |   54 +
 src/pl/tcl/po/meson.build                     |    1 +
 contrib/adminpack/meson.build                 |   22 +
 contrib/amcheck/meson.build                   |   36 +
 contrib/auth_delay/meson.build                |    4 +
 contrib/auto_explain/meson.build              |   15 +
 contrib/basebackup_to_shell/meson.build       |   22 +
 contrib/basic_archive/meson.build             |   23 +
 contrib/bloom/meson.build                     |   35 +
 contrib/bool_plperl/meson.build               |   41 +
 contrib/btree_gin/meson.build                 |   53 +
 contrib/btree_gist/meson.build                |   83 +
 contrib/citext/meson.build                    |   33 +
 contrib/cube/meson.build                      |   52 +
 contrib/dblink/meson.build                    |   30 +
 contrib/dict_int/meson.build                  |   21 +
 contrib/dict_xsyn/meson.build                 |   28 +
 contrib/earthdistance/meson.build             |   22 +
 contrib/file_fdw/meson.build                  |   21 +
 contrib/fuzzystrmatch/meson.build             |   25 +
 contrib/hstore/meson.build                    |   43 +
 contrib/hstore_plperl/meson.build             |   42 +
 contrib/hstore_plpython/meson.build           |   36 +
 contrib/intagg/meson.build                    |    6 +
 contrib/intarray/meson.build                  |   36 +
 contrib/isn/meson.build                       |   32 +
 contrib/jsonb_plperl/meson.build              |   42 +
 contrib/jsonb_plpython/meson.build            |   35 +
 contrib/lo/meson.build                        |   26 +
 contrib/ltree/meson.build                     |   43 +
 contrib/ltree_plpython/meson.build            |   36 +
 contrib/meson.build                           |   66 +
 contrib/oid2name/meson.build                  |   16 +
 contrib/old_snapshot/meson.build              |   14 +
 contrib/pageinspect/meson.build               |   59 +
 contrib/passwordcheck/meson.build             |   29 +
 contrib/pg_buffercache/meson.build            |   26 +
 contrib/pg_freespacemap/meson.build           |   28 +
 contrib/pg_prewarm/meson.build                |   26 +
 contrib/pg_stat_statements/meson.build        |   34 +
 contrib/pg_surgery/meson.build                |   24 +
 contrib/pg_trgm/meson.build                   |   34 +
 contrib/pg_visibility/meson.build             |   26 +
 contrib/pg_walinspect/meson.build             |   37 +
 contrib/pgcrypto/meson.build                  |   99 +
 contrib/pgrowlocks/meson.build                |   14 +
 contrib/pgstattuple/meson.build               |   31 +
 contrib/postgres_fdw/meson.build              |   33 +
 contrib/seg/meson.build                       |   50 +
 contrib/sepgsql/meson.build                   |   33 +
 contrib/spi/meson.build                       |   46 +
 contrib/sslinfo/meson.build                   |   20 +
 contrib/tablefunc/meson.build                 |   24 +
 contrib/tcn/meson.build                       |   23 +
 contrib/test_decoding/meson.build             |   62 +
 contrib/tsm_system_rows/meson.build           |   23 +
 contrib/tsm_system_time/meson.build           |   23 +
 contrib/unaccent/meson.build                  |   31 +
 contrib/uuid-ossp/meson.build                 |   32 +
 contrib/vacuumlo/meson.build                  |   16 +
 contrib/xml2/meson.build                      |   31 +
 src/interfaces/ecpg/compatlib/meson.build     |   21 +
 src/interfaces/ecpg/ecpglib/meson.build       |   36 +
 src/interfaces/ecpg/ecpglib/po/meson.build    |    1 +
 src/interfaces/ecpg/include/meson.build       |   51 +
 src/interfaces/ecpg/meson.build               |    5 +
 src/interfaces/ecpg/pgtypeslib/meson.build    |   29 +
 src/interfaces/ecpg/preproc/meson.build       |  104 +
 src/interfaces/ecpg/preproc/po/meson.build    |    1 +
 .../ecpg/test/compat_informix/meson.build     |   31 +
 .../ecpg/test/compat_oracle/meson.build       |   20 +
 src/interfaces/ecpg/test/connect/meson.build  |   20 +
 src/interfaces/ecpg/test/meson.build          |   77 +
 .../ecpg/test/pgtypeslib/meson.build          |   21 +
 src/interfaces/ecpg/test/preproc/meson.build  |   37 +
 src/interfaces/ecpg/test/sql/meson.build      |   46 +
 src/interfaces/ecpg/test/thread/meson.build   |   21 +
 src/interfaces/meson.build                    |    2 +
 doc/src/sgml/meson.build                      |  262 ++
 doc/src/sgml/resolv.xsl                       |    7 +
 doc/src/sgml/version.sgml.in                  |    2 +
 src/test/authentication/meson.build           |   11 +
 src/test/icu/meson.build                      |   11 +
 src/test/isolation/meson.build                |   55 +
 src/test/kerberos/meson.build                 |   15 +
 src/test/ldap/meson.build                     |   11 +
 src/test/meson.build                          |   23 +
 src/test/modules/brin/meson.build             |   16 +
 src/test/modules/commit_ts/meson.build        |   18 +
 src/test/modules/delay_execution/meson.build  |   17 +
 src/test/modules/dummy_index_am/meson.build   |   22 +
 src/test/modules/dummy_seclabel/meson.build   |   22 +
 src/test/modules/libpq_pipeline/meson.build   |   20 +
 src/test/modules/meson.build                  |   27 +
 src/test/modules/plsample/meson.build         |   22 +
 src/test/modules/snapshot_too_old/meson.build |   14 +
 src/test/modules/spgist_name_ops/meson.build  |   22 +
 .../ssl_passphrase_callback/meson.build       |   47 +
 src/test/modules/test_bloomfilter/meson.build |   22 +
 src/test/modules/test_ddl_deparse/meson.build |   42 +
 src/test/modules/test_extensions/meson.build  |   45 +
 .../modules/test_ginpostinglist/meson.build   |   22 +
 src/test/modules/test_integerset/meson.build  |   22 +
 src/test/modules/test_lfind/meson.build       |   22 +
 src/test/modules/test_misc/meson.build        |   12 +
 src/test/modules/test_oat_hooks/meson.build   |   17 +
 src/test/modules/test_parser/meson.build      |   22 +
 src/test/modules/test_pg_dump/meson.build     |   22 +
 src/test/modules/test_predtest/meson.build    |   22 +
 src/test/modules/test_rbtree/meson.build      |   22 +
 src/test/modules/test_regex/meson.build       |   23 +
 src/test/modules/test_rls_hooks/meson.build   |   16 +
 src/test/modules/test_shm_mq/meson.build      |   26 +
 src/test/modules/unsafe_tests/meson.build     |   11 +
 src/test/modules/worker_spi/meson.build       |   25 +
 src/test/recovery/meson.build                 |   43 +
 src/test/regress/meson.build                  |   58 +
 src/test/ssl/meson.build                      |   13 +
 src/test/subscription/meson.build             |   42 +
 configure                                     |    6 +
 configure.ac                                  |    6 +
 conversion_helpers.txt                        |   16 +
 meson.build                                   | 3009 +++++++++++++++++
 meson_options.txt                             |  176 +
 src/meson.build                               |   12 +
 src/timezone/meson.build                      |   53 +
 src/timezone/tznames/meson.build              |   21 +
 src/tools/find_meson                          |   27 +
 src/tools/pgflex                              |   63 +
 src/tools/rcgen                               |   34 +
 src/tools/testwrap                            |   46 +
 268 files changed, 10844 insertions(+)
 create mode 100644 src/include/catalog/meson.build
 create mode 100644 src/include/meson.build
 create mode 100644 src/include/nodes/meson.build
 create mode 100644 src/include/parser/meson.build
 create mode 100644 src/include/pg_config_ext.h.meson
 create mode 100644 src/include/storage/meson.build
 create mode 100644 src/include/utils/meson.build
 create mode 100644 src/common/meson.build
 create mode 100644 src/common/unicode/meson.build
 create mode 100644 src/port/meson.build
 create mode 100644 src/port/win32ver.rc.in
 create mode 100644 config/meson.build
 create mode 100644 src/backend/access/brin/meson.build
 create mode 100644 src/backend/access/common/meson.build
 create mode 100644 src/backend/access/gin/meson.build
 create mode 100644 src/backend/access/gist/meson.build
 create mode 100644 src/backend/access/hash/meson.build
 create mode 100644 src/backend/access/heap/meson.build
 create mode 100644 src/backend/access/index/meson.build
 create mode 100644 src/backend/access/meson.build
 create mode 100644 src/backend/access/nbtree/meson.build
 create mode 100644 src/backend/access/rmgrdesc/meson.build
 create mode 100644 src/backend/access/spgist/meson.build
 create mode 100644 src/backend/access/table/meson.build
 create mode 100644 src/backend/access/tablesample/meson.build
 create mode 100644 src/backend/access/transam/meson.build
 create mode 100644 src/backend/backup/meson.build
 create mode 100644 src/backend/bootstrap/meson.build
 create mode 100644 src/backend/catalog/meson.build
 create mode 100644 src/backend/commands/meson.build
 create mode 100644 src/backend/executor/meson.build
 create mode 100644 src/backend/foreign/meson.build
 create mode 100644 src/backend/jit/llvm/meson.build
 create mode 100644 src/backend/jit/meson.build
 create mode 100644 src/backend/lib/meson.build
 create mode 100644 src/backend/libpq/meson.build
 create mode 100644 src/backend/main/meson.build
 create mode 100644 src/backend/meson.build
 create mode 100644 src/backend/nodes/meson.build
 create mode 100644 src/backend/optimizer/geqo/meson.build
 create mode 100644 src/backend/optimizer/meson.build
 create mode 100644 src/backend/optimizer/path/meson.build
 create mode 100644 src/backend/optimizer/plan/meson.build
 create mode 100644 src/backend/optimizer/prep/meson.build
 create mode 100644 src/backend/optimizer/util/meson.build
 create mode 100644 src/backend/parser/meson.build
 create mode 100644 src/backend/partitioning/meson.build
 create mode 100644 src/backend/po/meson.build
 create mode 100644 src/backend/port/meson.build
 create mode 100644 src/backend/port/win32/meson.build
 create mode 100644 src/backend/postmaster/meson.build
 create mode 100644 src/backend/regex/meson.build
 create mode 100644 src/backend/replication/libpqwalreceiver/meson.build
 create mode 100644 src/backend/replication/logical/meson.build
 create mode 100644 src/backend/replication/meson.build
 create mode 100644 src/backend/replication/pgoutput/meson.build
 create mode 100644 src/backend/rewrite/meson.build
 create mode 100644 src/backend/snowball/meson.build
 create mode 100644 src/backend/statistics/meson.build
 create mode 100644 src/backend/storage/buffer/meson.build
 create mode 100644 src/backend/storage/file/meson.build
 create mode 100644 src/backend/storage/freespace/meson.build
 create mode 100644 src/backend/storage/ipc/meson.build
 create mode 100644 src/backend/storage/large_object/meson.build
 create mode 100644 src/backend/storage/lmgr/meson.build
 create mode 100644 src/backend/storage/meson.build
 create mode 100644 src/backend/storage/page/meson.build
 create mode 100644 src/backend/storage/smgr/meson.build
 create mode 100644 src/backend/storage/sync/meson.build
 create mode 100644 src/backend/tcop/meson.build
 create mode 100644 src/backend/tsearch/meson.build
 create mode 100644 src/backend/utils/activity/meson.build
 create mode 100644 src/backend/utils/adt/meson.build
 create mode 100644 src/backend/utils/cache/meson.build
 create mode 100644 src/backend/utils/error/meson.build
 create mode 100644 src/backend/utils/fmgr/meson.build
 create mode 100644 src/backend/utils/hash/meson.build
 create mode 100644 src/backend/utils/init/meson.build
 create mode 100644 src/backend/utils/mb/conversion_procs/meson.build
 create mode 100644 src/backend/utils/mb/meson.build
 create mode 100644 src/backend/utils/meson.build
 create mode 100644 src/backend/utils/misc/meson.build
 create mode 100644 src/backend/utils/mmgr/meson.build
 create mode 100644 src/backend/utils/resowner/meson.build
 create mode 100644 src/backend/utils/sort/meson.build
 create mode 100644 src/backend/utils/time/meson.build
 create mode 100644 src/fe_utils/meson.build
 create mode 100644 src/bin/initdb/meson.build
 create mode 100644 src/bin/initdb/po/meson.build
 create mode 100644 src/bin/meson.build
 create mode 100644 src/bin/pg_amcheck/meson.build
 create mode 100644 src/bin/pg_amcheck/po/meson.build
 create mode 100644 src/bin/pg_archivecleanup/meson.build
 create mode 100644 src/bin/pg_archivecleanup/po/meson.build
 create mode 100644 src/bin/pg_basebackup/meson.build
 create mode 100644 src/bin/pg_basebackup/po/meson.build
 create mode 100644 src/bin/pg_checksums/meson.build
 create mode 100644 src/bin/pg_checksums/po/meson.build
 create mode 100644 src/bin/pg_config/meson.build
 create mode 100644 src/bin/pg_config/po/meson.build
 create mode 100644 src/bin/pg_controldata/meson.build
 create mode 100644 src/bin/pg_controldata/po/meson.build
 create mode 100644 src/bin/pg_ctl/meson.build
 create mode 100644 src/bin/pg_ctl/po/meson.build
 create mode 100644 src/bin/pg_dump/meson.build
 create mode 100644 src/bin/pg_dump/po/meson.build
 create mode 100644 src/bin/pg_resetwal/meson.build
 create mode 100644 src/bin/pg_resetwal/po/meson.build
 create mode 100644 src/bin/pg_rewind/meson.build
 create mode 100644 src/bin/pg_rewind/po/meson.build
 create mode 100644 src/bin/pg_test_fsync/meson.build
 create mode 100644 src/bin/pg_test_fsync/po/meson.build
 create mode 100644 src/bin/pg_test_timing/meson.build
 create mode 100644 src/bin/pg_test_timing/po/meson.build
 create mode 100644 src/bin/pg_upgrade/meson.build
 create mode 100644 src/bin/pg_upgrade/po/meson.build
 create mode 100644 src/bin/pg_verifybackup/meson.build
 create mode 100644 src/bin/pg_verifybackup/po/meson.build
 create mode 100644 src/bin/pg_waldump/meson.build
 create mode 100644 src/bin/pg_waldump/po/meson.build
 create mode 100644 src/bin/pgbench/meson.build
 create mode 100644 src/bin/pgevent/meson.build
 create mode 100644 src/bin/psql/meson.build
 create mode 100644 src/bin/psql/po/meson.build
 create mode 100644 src/bin/scripts/meson.build
 create mode 100644 src/bin/scripts/po/meson.build
 create mode 100644 src/interfaces/libpq/meson.build
 create mode 100644 src/interfaces/libpq/po/meson.build
 create mode 100644 src/interfaces/libpq/test/meson.build
 create mode 100644 src/pl/meson.build
 create mode 100644 src/pl/plperl/meson.build
 create mode 100644 src/pl/plperl/po/meson.build
 create mode 100644 src/pl/plpgsql/meson.build
 create mode 100644 src/pl/plpgsql/src/meson.build
 create mode 100644 src/pl/plpgsql/src/po/meson.build
 create mode 100644 src/pl/plpython/meson.build
 create mode 100644 src/pl/plpython/po/meson.build
 create mode 100644 src/pl/tcl/meson.build
 create mode 100644 src/pl/tcl/po/meson.build
 create mode 100644 contrib/adminpack/meson.build
 create mode 100644 contrib/amcheck/meson.build
 create mode 100644 contrib/auth_delay/meson.build
 create mode 100644 contrib/auto_explain/meson.build
 create mode 100644 contrib/basebackup_to_shell/meson.build
 create mode 100644 contrib/basic_archive/meson.build
 create mode 100644 contrib/bloom/meson.build
 create mode 100644 contrib/bool_plperl/meson.build
 create mode 100644 contrib/btree_gin/meson.build
 create mode 100644 contrib/btree_gist/meson.build
 create mode 100644 contrib/citext/meson.build
 create mode 100644 contrib/cube/meson.build
 create mode 100644 contrib/dblink/meson.build
 create mode 100644 contrib/dict_int/meson.build
 create mode 100644 contrib/dict_xsyn/meson.build
 create mode 100644 contrib/earthdistance/meson.build
 create mode 100644 contrib/file_fdw/meson.build
 create mode 100644 contrib/fuzzystrmatch/meson.build
 create mode 100644 contrib/hstore/meson.build
 create mode 100644 contrib/hstore_plperl/meson.build
 create mode 100644 contrib/hstore_plpython/meson.build
 create mode 100644 contrib/intagg/meson.build
 create mode 100644 contrib/intarray/meson.build
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 create mode 100644 contrib/old_snapshot/meson.build
 create mode 100644 contrib/pageinspect/meson.build
 create mode 100644 contrib/passwordcheck/meson.build
 create mode 100644 contrib/pg_buffercache/meson.build
 create mode 100644 contrib/pg_freespacemap/meson.build
 create mode 100644 contrib/pg_prewarm/meson.build
 create mode 100644 contrib/pg_stat_statements/meson.build
 create mode 100644 contrib/pg_surgery/meson.build
 create mode 100644 contrib/pg_trgm/meson.build
 create mode 100644 contrib/pg_visibility/meson.build
 create mode 100644 contrib/pg_walinspect/meson.build
 create mode 100644 contrib/pgcrypto/meson.build
 create mode 100644 contrib/pgrowlocks/meson.build
 create mode 100644 contrib/pgstattuple/meson.build
 create mode 100644 contrib/postgres_fdw/meson.build
 create mode 100644 contrib/seg/meson.build
 create mode 100644 contrib/sepgsql/meson.build
 create mode 100644 contrib/spi/meson.build
 create mode 100644 contrib/sslinfo/meson.build
 create mode 100644 contrib/tablefunc/meson.build
 create mode 100644 contrib/tcn/meson.build
 create mode 100644 contrib/test_decoding/meson.build
 create mode 100644 contrib/tsm_system_rows/meson.build
 create mode 100644 contrib/tsm_system_time/meson.build
 create mode 100644 contrib/unaccent/meson.build
 create mode 100644 contrib/uuid-ossp/meson.build
 create mode 100644 contrib/vacuumlo/meson.build
 create mode 100644 contrib/xml2/meson.build
 create mode 100644 src/interfaces/ecpg/compatlib/meson.build
 create mode 100644 src/interfaces/ecpg/ecpglib/meson.build
 create mode 100644 src/interfaces/ecpg/ecpglib/po/meson.build
 create mode 100644 src/interfaces/ecpg/include/meson.build
 create mode 100644 src/interfaces/ecpg/meson.build
 create mode 100644 src/interfaces/ecpg/pgtypeslib/meson.build
 create mode 100644 src/interfaces/ecpg/preproc/meson.build
 create mode 100644 src/interfaces/ecpg/preproc/po/meson.build
 create mode 100644 src/interfaces/ecpg/test/compat_informix/meson.build
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 create mode 100644 src/interfaces/ecpg/test/preproc/meson.build
 create mode 100644 src/interfaces/ecpg/test/sql/meson.build
 create mode 100644 src/interfaces/ecpg/test/thread/meson.build
 create mode 100644 src/interfaces/meson.build
 create mode 100644 doc/src/sgml/meson.build
 create mode 100644 doc/src/sgml/resolv.xsl
 create mode 100644 doc/src/sgml/version.sgml.in
 create mode 100644 src/test/authentication/meson.build
 create mode 100644 src/test/icu/meson.build
 create mode 100644 src/test/isolation/meson.build
 create mode 100644 src/test/kerberos/meson.build
 create mode 100644 src/test/ldap/meson.build
 create mode 100644 src/test/meson.build
 create mode 100644 src/test/modules/brin/meson.build
 create mode 100644 src/test/modules/commit_ts/meson.build
 create mode 100644 src/test/modules/delay_execution/meson.build
 create mode 100644 src/test/modules/dummy_index_am/meson.build
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 create mode 100644 src/test/subscription/meson.build
 create mode 100644 conversion_helpers.txt
 create mode 100644 meson.build
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diff --git a/src/include/catalog/meson.build b/src/include/catalog/meson.build
new file mode 100644
index 00000000000..45ffa99692e
--- /dev/null
+++ b/src/include/catalog/meson.build
@@ -0,0 +1,142 @@
+catalog_headers = [
+  'pg_proc.h',
+  'pg_type.h',
+  'pg_attribute.h',
+  'pg_class.h',
+  'pg_attrdef.h',
+  'pg_constraint.h',
+  'pg_inherits.h',
+  'pg_index.h',
+  'pg_operator.h',
+  'pg_opfamily.h',
+  'pg_opclass.h',
+  'pg_am.h',
+  'pg_amop.h',
+  'pg_amproc.h',
+  'pg_language.h',
+  'pg_largeobject_metadata.h',
+  'pg_largeobject.h',
+  'pg_aggregate.h',
+  'pg_statistic.h',
+  'pg_statistic_ext.h',
+  'pg_statistic_ext_data.h',
+  'pg_rewrite.h',
+  'pg_trigger.h',
+  'pg_event_trigger.h',
+  'pg_description.h',
+  'pg_cast.h',
+  'pg_enum.h',
+  'pg_namespace.h',
+  'pg_conversion.h',
+  'pg_depend.h',
+  'pg_database.h',
+  'pg_db_role_setting.h',
+  'pg_tablespace.h',
+  'pg_authid.h',
+  'pg_auth_members.h',
+  'pg_shdepend.h',
+  'pg_shdescription.h',
+  'pg_ts_config.h',
+  'pg_ts_config_map.h',
+  'pg_ts_dict.h',
+  'pg_ts_parser.h',
+  'pg_ts_template.h',
+  'pg_extension.h',
+  'pg_foreign_data_wrapper.h',
+  'pg_foreign_server.h',
+  'pg_user_mapping.h',
+  'pg_foreign_table.h',
+  'pg_policy.h',
+  'pg_replication_origin.h',
+  'pg_default_acl.h',
+  'pg_init_privs.h',
+  'pg_seclabel.h',
+  'pg_shseclabel.h',
+  'pg_collation.h',
+  'pg_parameter_acl.h',
+  'pg_partitioned_table.h',
+  'pg_range.h',
+  'pg_transform.h',
+  'pg_sequence.h',
+  'pg_publication.h',
+  'pg_publication_namespace.h',
+  'pg_publication_rel.h',
+  'pg_subscription.h',
+  'pg_subscription_rel.h',
+]
+
+bki_data = [
+  'pg_aggregate.dat',
+  'pg_am.dat',
+  'pg_amop.dat',
+  'pg_amproc.dat',
+  'pg_authid.dat',
+  'pg_cast.dat',
+  'pg_class.dat',
+  'pg_collation.dat',
+  'pg_conversion.dat',
+  'pg_database.dat',
+  'pg_language.dat',
+  'pg_namespace.dat',
+  'pg_opclass.dat',
+  'pg_operator.dat',
+  'pg_opfamily.dat',
+  'pg_proc.dat',
+  'pg_range.dat',
+  'pg_tablespace.dat',
+  'pg_ts_config.dat',
+  'pg_ts_config_map.dat',
+  'pg_ts_dict.dat',
+  'pg_ts_parser.dat',
+  'pg_ts_template.dat',
+  'pg_type.dat',
+]
+bki_data_f = files(bki_data)
+
+
+input = []
+output_files = ['postgres.bki', 'system_constraints.sql', 'schemapg.h', 'system_fk_info.h']
+output_install = [dir_data, dir_data, dir_include_server / 'catalog', dir_include_server / 'catalog']
+
+foreach h : catalog_headers
+  fname = h.split('.h')[0] + '_d.h'
+  input += files(h)
+  output_files += fname
+  output_install += dir_include_server / 'catalog'
+endforeach
+
+generated_catalog_headers = custom_target('generated_catalog_headers',
+  output: output_files,
+  install_dir: output_install,
+  input: input,
+  depend_files: bki_data_f,
+  build_by_default: true,
+  install: true,
+  command: [
+    perl,
+    files('../../backend/catalog/genbki.pl'),
+    '--include-path=@SOURCE_ROOT@/src/include',
+    '--set-version=' + pg_version_major.to_string(),
+    '--output=@OUTDIR@', '@INPUT@'
+  ],
+)
+
+generated_headers += generated_catalog_headers.to_list()
+
+# autoconf generates the file there, ensure we get a conflict
+generated_sources_ac += {'src/backend/catalog': output_files + ['bki-stamp']}
+generated_sources_ac += {'src/include/catalog': ['header-stamp']}
+
+# 'reformat-dat-files' is a convenience target for rewriting the
+# catalog data files in our standard format.  This includes collapsing
+# out any entries that are redundant with a BKI_DEFAULT annotation.
+run_target('reformat-dat-files',
+  command: [perl, files('reformat_dat_file.pl'), '--output', '@CURRENT_SOURCE_DIR@', bki_data_f],
+)
+
+# 'expand-dat-files' is a convenience target for expanding out all
+# default values in the catalog data files.  This should be run before
+# altering or removing any BKI_DEFAULT annotation.
+run_target('expand-dat-files',
+  command: [perl, files('reformat_dat_file.pl'), '--output', '@CURRENT_SOURCE_DIR@', bki_data_f, '--full-tuples'],
+)
diff --git a/src/include/meson.build b/src/include/meson.build
new file mode 100644
index 00000000000..66991c43d35
--- /dev/null
+++ b/src/include/meson.build
@@ -0,0 +1,174 @@
+pg_config_ext = configure_file(
+  input: 'pg_config_ext.h.meson',
+  output: 'pg_config_ext.h',
+  configuration: cdata,
+  install: true,
+  install_dir: dir_include,
+)
+configure_files += pg_config_ext
+
+pg_config_os = configure_file(
+  output: 'pg_config_os.h',
+  input: files('port/@0@.h'.format(portname)),
+  install: true,
+  install_dir: dir_include,
+  copy: true,
+)
+configure_files += pg_config_os
+
+pg_config = configure_file(
+  output: 'pg_config.h',
+  install: true,
+  install_dir: dir_include,
+  configuration: cdata,
+)
+configure_files += pg_config
+
+
+config_paths_data = configuration_data()
+config_paths_data.set_quoted('PGBINDIR', dir_prefix / dir_bin)
+config_paths_data.set_quoted('PGSHAREDIR', dir_prefix / dir_data)
+config_paths_data.set_quoted('SYSCONFDIR', dir_prefix / dir_sysconf)
+config_paths_data.set_quoted('INCLUDEDIR', dir_prefix / dir_include)
+config_paths_data.set_quoted('PKGINCLUDEDIR', dir_prefix / dir_include_pkg)
+config_paths_data.set_quoted('INCLUDEDIRSERVER', dir_prefix / dir_include_server)
+config_paths_data.set_quoted('LIBDIR', dir_prefix / dir_lib)
+config_paths_data.set_quoted('PKGLIBDIR', dir_prefix / dir_lib_pkg)
+config_paths_data.set_quoted('LOCALEDIR', dir_prefix / dir_locale)
+config_paths_data.set_quoted('DOCDIR', dir_prefix / dir_doc)
+config_paths_data.set_quoted('HTMLDIR', dir_prefix / dir_doc_html)
+config_paths_data.set_quoted('MANDIR', dir_prefix / dir_man)
+
+
+var_cc = ' '.join(cc.cmd_array())
+var_cpp = ' '.join(cc.cmd_array() + ['-E'])
+var_cflags = ' '.join(cflags + cflags_warn)
+var_cxxflags = ' '.join(cxxflags + cxxflags_warn)
+var_cppflags = ' '.join(cppflags)
+var_cflags_sl = '-fPIC' #FIXME
+var_ldflags = ' '.join(ldflags)
+var_ldflags_sl = ''.join(ldflags_sl)
+var_ldflags_ex = '' # FIXME
+# FIXME - some extensions might directly use symbols from one of libs. If
+# that symbol isn't used by postgres, and statically linked, it'll cause an
+# undefined symbol at runtime. And obviously it'll cause problems for
+# executables, although those are probably less common.
+var_libs = ''
+
+
+pg_config_paths = configure_file(
+  output: 'pg_config_paths.h',
+  configuration: config_paths_data,
+  install: false,
+)
+configure_files += pg_config_paths
+
+install_headers(
+  'pg_config_manual.h',
+  'postgres_ext.h',
+)
+
+install_headers(
+  'libpq/libpq-fs.h',
+  install_dir: dir_include / 'libpq',
+)
+
+install_headers(
+  'c.h',
+  'port.h',
+  'postgres_fe.h',
+  install_dir: dir_include_internal
+)
+
+install_headers(
+  'libpq/pqcomm.h',
+  install_dir: dir_include_internal / 'libpq',
+)
+
+install_headers(
+  'c.h',
+  'fmgr.h',
+  'funcapi.h',
+  'getopt_long.h',
+  'miscadmin.h',
+  'pg_config_manual.h',
+  'pg_getopt.h',
+  'pg_trace.h',
+  'pgstat.h',
+  'pgtar.h',
+  'pgtime.h',
+  'port.h',
+  'postgres.h',
+  'postgres_ext.h',
+  'postgres_fe.h',
+  'windowapi.h',
+  pg_config_ext,
+  pg_config_os,
+  pg_config,
+  install_dir: dir_include_server,
+)
+
+subdir('catalog')
+subdir('nodes')
+subdir('parser')
+subdir('storage')
+subdir('utils')
+
+header_subdirs = [
+  'access',
+  'catalog',
+  'bootstrap',
+  'commands',
+  'common',
+  'datatype',
+  'executor',
+  'fe_utils',
+  'foreign',
+  'jit',
+  'lib',
+  'libpq',
+  'mb',
+  'nodes',
+  'optimizer',
+  'parser',
+  'partitioning',
+  'postmaster',
+  'regex',
+  'replication',
+  'rewrite',
+  'statistics',
+  'storage',
+  'tcop',
+  'snowball',
+  'tsearch',
+  'utils',
+  'port',
+  'portability',
+]
+
+# XXX: installing headers this way has the danger of installing editor files
+# etc, unfortunately install_subdir() doesn't allow including / excluding by
+# pattern currently.
+foreach d : header_subdirs
+  if d == 'catalog'
+    continue
+  endif
+  install_subdir(d, install_dir: dir_include_server,
+                 exclude_files: ['.gitignore', 'meson.build'])
+endforeach
+
+install_subdir('catalog',
+  install_dir: dir_include_server,
+  exclude_files: [
+    '.gitignore',
+    'Makefile',
+    'duplicate_oids',
+    'meson.build',
+    'reformat_dat_file.pl',
+    'renumber_oids.pl',
+    'unused_oids',
+  ] + bki_data,
+)
+
+# autoconf generates the file there, ensure we get a conflict
+generated_sources_ac += {'src/include': ['stamp-h', 'stamp-ext-h']}
diff --git a/src/include/nodes/meson.build b/src/include/nodes/meson.build
new file mode 100644
index 00000000000..b7df232081f
--- /dev/null
+++ b/src/include/nodes/meson.build
@@ -0,0 +1,58 @@
+node_support_input_i = [
+  'nodes/nodes.h',
+  'nodes/primnodes.h',
+  'nodes/parsenodes.h',
+  'nodes/pathnodes.h',
+  'nodes/plannodes.h',
+  'nodes/execnodes.h',
+  'access/amapi.h',
+  'access/sdir.h',
+  'access/tableam.h',
+  'access/tsmapi.h',
+  'commands/event_trigger.h',
+  'commands/trigger.h',
+  'executor/tuptable.h',
+  'foreign/fdwapi.h',
+  'nodes/extensible.h',
+  'nodes/lockoptions.h',
+  'nodes/replnodes.h',
+  'nodes/supportnodes.h',
+  'nodes/value.h',
+  'utils/rel.h',
+]
+
+node_support_input = []
+foreach i : node_support_input_i
+  node_support_input += meson.source_root() / 'src' / 'include' / i
+endforeach
+
+node_support_output = [
+  'nodetags.h',
+  'outfuncs.funcs.c', 'outfuncs.switch.c',
+  'readfuncs.funcs.c', 'readfuncs.switch.c',
+  'copyfuncs.funcs.c', 'copyfuncs.switch.c',
+  'equalfuncs.funcs.c', 'equalfuncs.switch.c',
+]
+node_support_install = [
+  dir_include_server / 'nodes',
+  false, false,
+  false, false,
+  false, false,
+  false, false,
+]
+
+generated_nodes = custom_target('nodetags.h',
+  input: node_support_input,
+  output: node_support_output,
+  command: [
+    perl, files('../../backend/nodes/gen_node_support.pl'),
+    '-o', '@OUTDIR@',
+    '@INPUT@'],
+  install: true,
+  install_dir: node_support_install,
+)
+generated_headers += generated_nodes[0]
+
+# autoconf generates the file there, ensure we get a conflict
+generated_sources_ac += {'src/backend/nodes': node_support_output + ['node-support-stamp']}
+generated_sources_ac += {'src/include/nodes': ['header-stamp']}
diff --git a/src/include/parser/meson.build b/src/include/parser/meson.build
new file mode 100644
index 00000000000..942d9acd733
--- /dev/null
+++ b/src/include/parser/meson.build
@@ -0,0 +1,14 @@
+backend_parser = custom_target('gram',
+  input: [files('../../backend/parser/gram.y')],
+  output: ['gram.c', 'gram.h'],
+  command: [bison_cmd, '-d', '@INPUT@'],
+  install: true,
+  # Only install gram.h, not gram.c
+  install_dir: [false, dir_include_server / 'parser'],
+)
+
+backend_parser_code = backend_parser[0]
+backend_parser_header = backend_parser[1]
+
+# autoconf generates the file there, ensure we get a conflict
+generated_sources_ac += {'src/backend/parser': ['gram.c', 'gram.h']}
diff --git a/src/include/pg_config_ext.h.meson b/src/include/pg_config_ext.h.meson
new file mode 100644
index 00000000000..57cdfca0cfd
--- /dev/null
+++ b/src/include/pg_config_ext.h.meson
@@ -0,0 +1,7 @@
+/*
+ * src/include/pg_config_ext.h.in.  This is generated manually, not by
+ * autoheader, since we want to limit which symbols get defined here.
+ */
+
+/* Define to the name of a signed 64-bit integer type. */
+#mesondefine PG_INT64_TYPE
diff --git a/src/include/storage/meson.build b/src/include/storage/meson.build
new file mode 100644
index 00000000000..eae9f98920e
--- /dev/null
+++ b/src/include/storage/meson.build
@@ -0,0 +1,19 @@
+lwlocknames = custom_target('lwlocknames',
+  input: files('../../backend/storage/lmgr/lwlocknames.txt'),
+  output: ['lwlocknames.h', 'lwlocknames.c'],
+  command: [
+    perl, files('../../backend/storage/lmgr/generate-lwlocknames.pl'),
+    '-o', '@OUTDIR@',
+    '@INPUT@'
+  ],
+  build_by_default: true,
+  install: true,
+  install_dir: [dir_include_server / 'storage', false],
+)
+
+lwlocknames_h = lwlocknames[0]
+
+generated_backend_headers += lwlocknames_h
+
+# autoconf generates the file there, ensure we get a conflict
+generated_sources_ac += {'src/backend/storage/lmgr': ['lwlocknames.c', 'lwlocknames.h']}
diff --git a/src/include/utils/meson.build b/src/include/utils/meson.build
new file mode 100644
index 00000000000..bded105f7ea
--- /dev/null
+++ b/src/include/utils/meson.build
@@ -0,0 +1,57 @@
+errcodes = custom_target('errcodes',
+  input: files('../../backend/utils/errcodes.txt'),
+  output: ['errcodes.h'],
+  command: [
+    perl, files('../../backend/utils/generate-errcodes.pl'),
+    '--outfile', '@OUTPUT@',
+    '@INPUT@',
+  ],
+  install: true,
+  install_dir: dir_include_server / 'utils',
+)
+generated_headers += errcodes
+
+if dtrace.found()
+  probes_tmp = custom_target('probes.h.tmp',
+    input: files('../../backend/utils/probes.d'),
+    output: 'probes.h.tmp',
+    command: [dtrace, '-C', '-h', '-s', '@INPUT@', '-o', '@OUTPUT@'],
+  )
+  probes = custom_target('probes.h',
+    input: probes_tmp,
+    output: 'probes.h',
+    capture: true,
+    command: [sed, '-f', files('../../backend/utils/postprocess_dtrace.sed'), '@INPUT@'],
+    install: true,
+    install_dir: dir_include_server / 'utils',
+  )
+else
+  probes = custom_target('probes.h',
+    input: files('../../backend/utils/probes.d'),
+    output: 'probes.h',
+    capture: true,
+    command: [sed, '-f', files('../../backend/utils/Gen_dummy_probes.sed'), '@INPUT@'],
+    install: true,
+    install_dir: dir_include_server / 'utils',
+  )
+endif
+
+generated_backend_headers += probes
+
+fmgrtab_output = ['fmgroids.h', 'fmgrprotos.h', 'fmgrtab.c']
+fmgrtab_target = custom_target('fmgrtab',
+  input: '../catalog/pg_proc.dat',
+  output : fmgrtab_output,
+  command: [perl, '-I', '@SOURCE_ROOT@/src/backend/catalog/', files('../../backend/utils/Gen_fmgrtab.pl'), '--include-path=@SOURCE_ROOT@/src/include', '--output=@OUTDIR@', '@INPUT@'],
+  install: true,
+  install_dir: [dir_include_server / 'utils', dir_include_server / 'utils', false],
+)
+
+generated_backend_headers += fmgrtab_target[0]
+generated_backend_headers += fmgrtab_target[1]
+
+# autoconf generates the file there, ensure we get a conflict
+generated_sources_ac += {
+  'src/backend/utils': fmgrtab_output + ['errcodes.h', 'probes.h', 'fmgr-stamp'],
+  'src/include/utils': ['header-stamp'],
+}
diff --git a/src/common/meson.build b/src/common/meson.build
new file mode 100644
index 00000000000..23842e1ffef
--- /dev/null
+++ b/src/common/meson.build
@@ -0,0 +1,174 @@
+common_sources = files(
+  'archive.c',
+  'base64.c',
+  'checksum_helper.c',
+  'compression.c',
+  'controldata_utils.c',
+  'encnames.c',
+  'exec.c',
+  'file_perm.c',
+  'file_utils.c',
+  'hashfn.c',
+  'ip.c',
+  'jsonapi.c',
+  'keywords.c',
+  'kwlookup.c',
+  'link-canary.c',
+  'md5_common.c',
+  'pg_get_line.c',
+  'pg_lzcompress.c',
+  'pg_prng.c',
+  'pgfnames.c',
+  'psprintf.c',
+  'relpath.c',
+  'rmtree.c',
+  'saslprep.c',
+  'scram-common.c',
+  'string.c',
+  'stringinfo.c',
+  'unicode_norm.c',
+  'username.c',
+  'wait_error.c',
+  'wchar.c',
+)
+
+if ssl.found()
+  common_sources += files(
+    'cryptohash_openssl.c',
+    'hmac_openssl.c',
+    'protocol_openssl.c',
+  )
+else
+  common_sources += files(
+    'cryptohash.c',
+    'hmac.c',
+    'md5.c',
+    'sha1.c',
+    'sha2.c',
+  )
+endif
+
+common_kwlist = custom_target('kwlist',
+  input: files('../include/parser/kwlist.h'),
+  output: 'kwlist_d.h',
+  command: [perl, '-I', '@SOURCE_ROOT@/src/tools', files('../tools/gen_keywordlist.pl'),
+      '--extern', '--output', '@OUTDIR@', '@INPUT@'])
+generated_sources += common_kwlist
+common_sources += common_kwlist
+
+# The code imported from Ryu gets a pass on declaration-after-statement,
+# in order to keep it more closely aligned with its upstream.
+ryu_sources = files(
+  'd2s.c',
+  'f2s.c',
+)
+ryu_cflags = []
+
+if using_declaration_after_statement_warning
+  ryu_cflags += ['-Wno-declaration-after-statement']
+endif
+
+config_info_sources = files('config_info.c',)
+config_info_cflags = [
+  '-DVAL_CC="@0@"'.format(var_cc),
+  '-DVAL_CPPFLAGS="@0@"'.format(var_cppflags),
+  '-DVAL_CFLAGS="@0@"'.format(var_cflags),
+  '-DVAL_CFLAGS_SL="@0@"'.format(var_cflags_sl),
+  '-DVAL_LDFLAGS="@0@"'.format(var_ldflags),
+  '-DVAL_LDFLAGS_EX="@0@"'.format(var_ldflags_ex),
+  '-DVAL_LDFLAGS_SL="@0@"'.format(var_ldflags_sl),
+  '-DVAL_LIBS="@0@"'.format(var_libs),
+]
+
+# Some files need to be built with different cflags. The different sets are
+# defined here.
+common_cflags = {
+  'ryu': ryu_cflags,
+  'config_info': config_info_cflags,
+}
+common_sources_cflags = {
+  'ryu': ryu_sources,
+  'config_info': config_info_sources
+}
+
+
+# A few files are currently only built for frontend, not server
+# (Mkvcbuild.pm has a copy of this list, too).  logging.c is excluded
+# from OBJS_FRONTEND_SHLIB (shared library) as a matter of policy,
+# because it is not appropriate for general purpose libraries such
+# as libpq to report errors directly.
+
+common_sources_frontend_shlib = common_sources
+common_sources_frontend_shlib += files(
+  'fe_memutils.c',
+  'restricted_token.c',
+  'sprompt.c',
+)
+
+common_sources_frontend_static = common_sources_frontend_shlib
+common_sources_frontend_static += files(
+  'logging.c',
+)
+
+# Build pgport once for backend, once for use in frontend binaries, and once
+# for use in shared libraries
+#
+# XXX: in most environments we could probably link_whole pgcommon_shlib
+# against pgcommon_static, instead of compiling twice.
+#
+# For the server build of pgcommon, depend on lwlocknames_h, because at least
+# cryptohash_openssl.c, hmac_openssl.c depend on it. That's arguably a
+# layering violation, but ...
+pgcommon = {}
+pgcommon_variants = {
+  '_srv': internal_lib_args + {
+    'sources': common_sources + [lwlocknames_h],
+    'dependencies': [backend_common_code],
+  },
+  '': default_lib_args + {
+    'sources': common_sources_frontend_static,
+    'dependencies': [frontend_common_code],
+  },
+  '_shlib': default_lib_args + {
+    'pic': true,
+    'sources': common_sources_frontend_shlib,
+    'dependencies': [frontend_common_code],
+  },
+}
+
+foreach name, opts : pgcommon_variants
+
+  # Build internal static libraries for sets of files that need to be built
+  # with different cflags
+  cflag_libs = []
+  foreach cflagname, sources : common_sources_cflags
+    if sources.length() == 0
+      continue
+    endif
+    c_args = opts.get('c_args', []) + common_cflags[cflagname]
+    cflag_libs += static_library('libpgcommon@0@_@1@'.format(name, cflagname),
+      include_directories: include_directories('.'),
+      kwargs: opts + {
+        'sources': sources,
+        'c_args': c_args,
+        'build_by_default': false,
+        'install': false,
+      },
+    )
+  endforeach
+
+  lib = static_library('libpgcommon@0@'.format(name),
+      link_with: cflag_libs,
+      include_directories: include_directories('.'),
+      kwargs: opts + {
+        'dependencies': opts['dependencies'] + [ssl],
+      }
+    )
+  pgcommon += {name: lib}
+endforeach
+
+common_srv = pgcommon['_srv']
+common_shlib = pgcommon['_shlib']
+common_static = pgcommon['']
+
+subdir('unicode')
diff --git a/src/common/unicode/meson.build b/src/common/unicode/meson.build
new file mode 100644
index 00000000000..44a6cf77c3d
--- /dev/null
+++ b/src/common/unicode/meson.build
@@ -0,0 +1,107 @@
+# These files are part of the Unicode Character Database. Download
+# them on demand.
+
+UNICODE_VERSION = '14.0.0'
+
+unicode_data = {}
+unicode_baseurl = 'https://www.unicode.org/Public/@0@/ucd/@1@'
+
+if not wget.found()
+  subdir_done()
+endif
+
+foreach f : ['UnicodeData.txt', 'EastAsianWidth.txt', 'DerivedNormalizationProps.txt', 'CompositionExclusions.txt', 'NormalizationTest.txt']
+  url = unicode_baseurl.format(UNICODE_VERSION, f)
+  target = custom_target(f,
+    output: f,
+    command: [wget, wget_flags, url],
+    build_by_default: false,
+  )
+  unicode_data += {f: target}
+endforeach
+
+
+update_unicode_targets = []
+
+update_unicode_targets += \
+  custom_target('unicode_norm_table.h',
+    input: [unicode_data['UnicodeData.txt'], unicode_data['CompositionExclusions.txt']],
+    output: ['unicode_norm_table.h', 'unicode_norm_hashfunc.h'],
+    command: [
+      perl, files('generate-unicode_norm_table.pl'),
+      '--outdir', '@OUTDIR@', '@INPUT@'],
+    build_by_default: false,
+  )
+
+update_unicode_targets += \
+  custom_target('unicode_combining_table.h',
+    input: [unicode_data['UnicodeData.txt']],
+    output: ['unicode_combining_table.h'],
+    command: [perl, files('generate-unicode_combining_table.pl'), '@INPUT@'],
+    build_by_default: false,
+    capture: true,
+  )
+
+update_unicode_targets += \
+  custom_target('unicode_east_asian_fw_table.h',
+    input: [unicode_data['EastAsianWidth.txt']],
+    output: ['unicode_east_asian_fw_table.h'],
+    command: [perl, files('generate-unicode_east_asian_fw_table.pl'), '@INPUT@'],
+    build_by_default: false,
+    capture: true,
+  )
+
+update_unicode_targets += \
+  custom_target('unicode_normprops_table.h',
+    input: [unicode_data['DerivedNormalizationProps.txt']],
+    output: ['unicode_normprops_table.h'],
+    command: [perl, files('generate-unicode_normprops_table.pl'), '@INPUT@'],
+    build_by_default: false,
+    capture: true,
+  )
+
+norm_test_table = custom_target('norm_test_table.h',
+    input: [unicode_data['NormalizationTest.txt']],
+    output: ['norm_test_table.h'],
+    command: [perl, files('generate-norm_test_table.pl'), '@INPUT@', '@OUTPUT@'],
+    build_by_default: false,
+  )
+
+inc = include_directories('.')
+
+norm_test = executable('norm_test',
+  ['norm_test.c', norm_test_table],
+  dependencies: [frontend_port_code],
+  include_directories: inc,
+  link_with: [common_static, pgport_static],
+  build_by_default: false,
+  kwargs: default_bin_args + {
+    'install': false,
+  }
+)
+
+update_unicode_dep = []
+
+if not meson.is_cross_build()
+  update_unicode_dep += custom_target('norm_test.run',
+    output: 'norm_test.run',
+    input: update_unicode_targets,
+    command: [norm_test],
+    build_by_default: false,
+    build_always_stale: true,
+  )
+endif
+
+
+# Use a custom target, as run targets serialize the output, making this harder
+# to debug, and don't deal well with targets with multiple outputs.
+update_unicode = custom_target('update-unicode',
+  depends: update_unicode_dep,
+  output: ['dont-exist'],
+  input: update_unicode_targets,
+  command: ['cp', '@INPUT@', '@SOURCE_ROOT@/src/include/common/'],
+  build_by_default: false,
+  build_always_stale: true,
+)
+
+alias_target('update-unicode', update_unicode)
diff --git a/src/port/meson.build b/src/port/meson.build
new file mode 100644
index 00000000000..ced2e014db8
--- /dev/null
+++ b/src/port/meson.build
@@ -0,0 +1,184 @@
+pgport_sources = [
+  'bsearch_arg.c',
+  'chklocale.c',
+  'inet_net_ntop.c',
+  'noblock.c',
+  'path.c',
+  'pg_bitutils.c',
+  'pg_strong_random.c',
+  'pgcheckdir.c',
+  'pgmkdirp.c',
+  'pgsleep.c',
+  'pgstrcasecmp.c',
+  'pgstrsignal.c',
+  'pqsignal.c',
+  'qsort.c',
+  'qsort_arg.c',
+  'quotes.c',
+  'snprintf.c',
+  'strerror.c',
+  'tar.c',
+  'thread.c',
+]
+
+if host_system == 'windows'
+  pgport_sources += files(
+    'dirmod.c',
+    'kill.c',
+    'open.c',
+    'system.c',
+    'win32dlopen.c',
+    'win32env.c',
+    'win32error.c',
+    'win32fdatasync.c',
+    'win32getrusage.c',
+    'win32link.c',
+    'win32ntdll.c',
+    'win32pread.c',
+    'win32pwrite.c',
+    'win32security.c',
+    'win32setlocale.c',
+    'win32stat.c',
+  )
+endif
+
+if cc.get_id() == 'msvc'
+  pgport_sources += files(
+    'dirent.c',
+    'win32gettimeofday.c',
+  )
+endif
+
+# Replacement functionality to be built if corresponding configure symbol
+# is false
+replace_funcs_neg = [
+  ['explicit_bzero'],
+  ['getopt'],
+  ['getopt_long'],
+  ['getpeereid'],
+  ['inet_aton'],
+  ['mkdtemp'],
+  ['preadv', 'HAVE_DECL_PREADV'],
+  ['pwritev', 'HAVE_DECL_PWRITEV'],
+  ['strlcat'],
+  ['strlcpy'],
+  ['strnlen'],
+]
+
+if host_system != 'windows'
+  replace_funcs_neg += [['pthread_barrier_wait']]
+endif
+
+# Replacement functionality to be built if corresponding configure symbol
+# is true
+replace_funcs_pos = [
+  # x86/x64
+  ['pg_crc32c_sse42', 'USE_SSE42_CRC32C'],
+  ['pg_crc32c_sse42', 'USE_SSE42_CRC32C_WITH_RUNTIME_CHECK', 'crc'],
+  ['pg_crc32c_sse42_choose', 'USE_SSE42_CRC32C_WITH_RUNTIME_CHECK'],
+  ['pg_crc32c_sb8', 'USE_SSE42_CRC32C_WITH_RUNTIME_CHECK'],
+
+  # arm / aarch64
+  ['pg_crc32c_armv8', 'USE_ARMV8_CRC32C'],
+  ['pg_crc32c_armv8', 'USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK', 'crc'],
+  ['pg_crc32c_armv8_choose', 'USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK'],
+  ['pg_crc32c_sb8', 'USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK'],
+
+  # generic fallback
+  ['pg_crc32c_sb8', 'USE_SLICING_BY_8_CRC32C'],
+]
+
+pgport_cflags = {'crc': cflags_crc}
+pgport_sources_cflags = {'crc': []}
+
+foreach f : replace_funcs_neg
+  func = f.get(0)
+  varname = f.get(1, 'HAVE_@0@'.format(func.to_upper()))
+  filename = '@0@.c'.format(func)
+
+  val = '@0@'.format(cdata.get(varname, 'false'))
+  if val == 'false' or val == '0'
+    pgport_sources += files(filename)
+  endif
+endforeach
+
+foreach f : replace_funcs_pos
+  func = f.get(0)
+  varname = f.get(1, 'HAVE_@0@'.format(func.to_upper()))
+  filename = '@0@.c'.format(func)
+
+  val = '@0@'.format(cdata.get(varname, 'false'))
+  if val == 'true' or val == '1'
+    src = files(filename)
+    if f.length() > 2
+      pgport_sources_cflags += {f[2]: pgport_sources_cflags[f[2]] + src}
+    else
+      pgport_sources += src
+    endif
+  endif
+endforeach
+
+
+if (host_system == 'windows' or host_system == 'cygwin') and \
+  (cc.get_id() != 'msvc' or cc.version().version_compare('<14.0'))
+
+  # Cygwin and (apparently, based on test results) Mingw both
+  # have a broken strtof(), so substitute its implementation.
+  # That's not a perfect fix, since it doesn't avoid double-rounding,
+  # but we have no better options.
+  pgport_sources += files('strtof.c')
+  message('On @0@ with compiler @1@ @2@ we will use our strtof wrapper.'.format(
+    host_system, cc.get_id(), cc.version()))
+endif
+
+
+
+# Build pgport once for backend, once for use in frontend binaries, and once
+# for use in shared libraries
+pgport = {}
+pgport_variants = {
+  '_srv': internal_lib_args + {
+    'dependencies': [backend_port_code],
+  },
+  '': default_lib_args + {
+    'dependencies': [frontend_port_code],
+  },
+  '_shlib': default_lib_args + {
+    'pic': true,
+    'dependencies': [frontend_port_code],
+  },
+}
+
+foreach name, opts : pgport_variants
+
+  # Build internal static libraries for sets of files that need to be built
+  # with different cflags
+  cflag_libs = []
+  foreach cflagname, sources : pgport_sources_cflags
+    if sources.length() == 0
+      continue
+    endif
+    c_args = opts.get('c_args', []) + pgport_cflags[cflagname]
+    cflag_libs += static_library('libpgport@0@_@1@'.format(name, cflagname),
+      sources,
+      kwargs: opts + {
+        'c_args': c_args,
+        'build_by_default': false,
+        'install': false,
+      },
+    )
+  endforeach
+
+  lib = static_library('libpgport@0@'.format(name),
+      pgport_sources,
+      link_with: cflag_libs,
+      kwargs: opts + {
+        'dependencies': opts['dependencies'] + [ssl],
+      }
+    )
+  pgport += {name: lib}
+endforeach
+
+pgport_srv = pgport['_srv']
+pgport_static = pgport['']
+pgport_shlib = pgport['_shlib']
diff --git a/src/port/win32ver.rc.in b/src/port/win32ver.rc.in
new file mode 100644
index 00000000000..eb0d45dccf1
--- /dev/null
+++ b/src/port/win32ver.rc.in
@@ -0,0 +1,41 @@
+#include <winver.h>
+#include "pg_config.h"
+
+// https://docs.microsoft.com/en-us/windows/win32/menurc/versioninfo-resource
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION    PG_MAJORVERSION_NUM,0,PG_MINORVERSION_NUM,0
+ PRODUCTVERSION PG_MAJORVERSION_NUM,0,PG_MINORVERSION_NUM,0
+ FILEFLAGSMASK  VS_FFI_FILEFLAGSMASK
+ FILEFLAGS      0x0L
+ FILEOS         VOS_NT_WINDOWS32
+ FILETYPE	@VFT_TYPE@
+ FILESUBTYPE    0x0L
+BEGIN
+ BLOCK "StringFileInfo"
+ BEGIN
+  BLOCK "040904B0"			// U.S. English, Unicode
+  BEGIN
+   VALUE "CompanyName",      "PostgreSQL Global Development Group"
+   VALUE "FileDescription",  "@FILEDESC@"
+   /*
+    * XXX: In the autoconf / src/tools/msvc build this was set differently than
+    * ProductVersion below, using the current date. But that doesn't seem like a
+    * good idea, because it makes the build not reproducible and causes
+    * unnecessary rebuilds?
+    */
+   VALUE "FileVersion",      PG_VERSION
+   VALUE "InternalName",     "@NAME@"
+   VALUE "LegalCopyright", "Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group. Portions Copyright (c) 1994, Regents of the University of California."
+   VALUE "OriginalFileName", "@NAME@.@FILEENDING@"
+   VALUE "ProductName",      "PostgreSQL"
+   VALUE "ProductVersion",   PG_VERSION
+  END
+ END
+ BLOCK "VarFileInfo"
+ BEGIN
+  VALUE "Translation", 0x0409, 1200	// U.S. English, Unicode
+ END
+END
+
+IDI_ICON ICON "@ICO@"
diff --git a/config/meson.build b/config/meson.build
new file mode 100644
index 00000000000..ab19c380bd2
--- /dev/null
+++ b/config/meson.build
@@ -0,0 +1,4 @@
+install_data(
+  'install-sh', 'missing',
+  install_dir: dir_pgxs / 'config'
+)
diff --git a/src/backend/access/brin/meson.build b/src/backend/access/brin/meson.build
new file mode 100644
index 00000000000..a54c7532927
--- /dev/null
+++ b/src/backend/access/brin/meson.build
@@ -0,0 +1,12 @@
+backend_sources += files(
+  'brin.c',
+  'brin_bloom.c',
+  'brin_inclusion.c',
+  'brin_minmax.c',
+  'brin_minmax_multi.c',
+  'brin_pageops.c',
+  'brin_revmap.c',
+  'brin_tuple.c',
+  'brin_validate.c',
+  'brin_xlog.c',
+)
diff --git a/src/backend/access/common/meson.build b/src/backend/access/common/meson.build
new file mode 100644
index 00000000000..857beaa32d3
--- /dev/null
+++ b/src/backend/access/common/meson.build
@@ -0,0 +1,18 @@
+backend_sources += files(
+  'attmap.c',
+  'bufmask.c',
+  'detoast.c',
+  'heaptuple.c',
+  'indextuple.c',
+  'printsimple.c',
+  'printtup.c',
+  'relation.c',
+  'reloptions.c',
+  'scankey.c',
+  'session.c',
+  'syncscan.c',
+  'toast_compression.c',
+  'toast_internals.c',
+  'tupconvert.c',
+  'tupdesc.c',
+)
diff --git a/src/backend/access/gin/meson.build b/src/backend/access/gin/meson.build
new file mode 100644
index 00000000000..56d6f343d54
--- /dev/null
+++ b/src/backend/access/gin/meson.build
@@ -0,0 +1,17 @@
+backend_sources += files(
+  'ginarrayproc.c',
+  'ginbtree.c',
+  'ginbulk.c',
+  'gindatapage.c',
+  'ginentrypage.c',
+  'ginfast.c',
+  'ginget.c',
+  'gininsert.c',
+  'ginlogic.c',
+  'ginpostinglist.c',
+  'ginscan.c',
+  'ginutil.c',
+  'ginvacuum.c',
+  'ginvalidate.c',
+  'ginxlog.c',
+)
diff --git a/src/backend/access/gist/meson.build b/src/backend/access/gist/meson.build
new file mode 100644
index 00000000000..1a996b5e25d
--- /dev/null
+++ b/src/backend/access/gist/meson.build
@@ -0,0 +1,13 @@
+backend_sources += files(
+  'gist.c',
+  'gistbuild.c',
+  'gistbuildbuffers.c',
+  'gistget.c',
+  'gistproc.c',
+  'gistscan.c',
+  'gistsplit.c',
+  'gistutil.c',
+  'gistvacuum.c',
+  'gistvalidate.c',
+  'gistxlog.c',
+)
diff --git a/src/backend/access/hash/meson.build b/src/backend/access/hash/meson.build
new file mode 100644
index 00000000000..22f2c691c34
--- /dev/null
+++ b/src/backend/access/hash/meson.build
@@ -0,0 +1,12 @@
+backend_sources += files(
+  'hash.c',
+  'hash_xlog.c',
+  'hashfunc.c',
+  'hashinsert.c',
+  'hashovfl.c',
+  'hashpage.c',
+  'hashsearch.c',
+  'hashsort.c',
+  'hashutil.c',
+  'hashvalidate.c',
+)
diff --git a/src/backend/access/heap/meson.build b/src/backend/access/heap/meson.build
new file mode 100644
index 00000000000..f1dca73743c
--- /dev/null
+++ b/src/backend/access/heap/meson.build
@@ -0,0 +1,11 @@
+backend_sources += files(
+  'heapam.c',
+  'heapam_handler.c',
+  'heapam_visibility.c',
+  'heaptoast.c',
+  'hio.c',
+  'pruneheap.c',
+  'rewriteheap.c',
+  'vacuumlazy.c',
+  'visibilitymap.c',
+)
diff --git a/src/backend/access/index/meson.build b/src/backend/access/index/meson.build
new file mode 100644
index 00000000000..18af5533e65
--- /dev/null
+++ b/src/backend/access/index/meson.build
@@ -0,0 +1,6 @@
+backend_sources += files(
+  'amapi.c',
+  'amvalidate.c',
+  'genam.c',
+  'indexam.c',
+)
diff --git a/src/backend/access/meson.build b/src/backend/access/meson.build
new file mode 100644
index 00000000000..9874291fc0a
--- /dev/null
+++ b/src/backend/access/meson.build
@@ -0,0 +1,13 @@
+subdir('brin')
+subdir('common')
+subdir('gin')
+subdir('gist')
+subdir('hash')
+subdir('heap')
+subdir('index')
+subdir('nbtree')
+subdir('rmgrdesc')
+subdir('spgist')
+subdir('table')
+subdir('tablesample')
+subdir('transam')
diff --git a/src/backend/access/nbtree/meson.build b/src/backend/access/nbtree/meson.build
new file mode 100644
index 00000000000..07dc29e8190
--- /dev/null
+++ b/src/backend/access/nbtree/meson.build
@@ -0,0 +1,13 @@
+backend_sources += files(
+  'nbtcompare.c',
+  'nbtdedup.c',
+  'nbtinsert.c',
+  'nbtpage.c',
+  'nbtree.c',
+  'nbtsearch.c',
+  'nbtsort.c',
+  'nbtsplitloc.c',
+  'nbtutils.c',
+  'nbtvalidate.c',
+  'nbtxlog.c',
+)
diff --git a/src/backend/access/rmgrdesc/meson.build b/src/backend/access/rmgrdesc/meson.build
new file mode 100644
index 00000000000..f3a6e0a571b
--- /dev/null
+++ b/src/backend/access/rmgrdesc/meson.build
@@ -0,0 +1,26 @@
+# used by frontend programs like pg_waldump
+rmgr_desc_sources = files(
+  'brindesc.c',
+  'clogdesc.c',
+  'committsdesc.c',
+  'dbasedesc.c',
+  'genericdesc.c',
+  'gindesc.c',
+  'gistdesc.c',
+  'hashdesc.c',
+  'heapdesc.c',
+  'logicalmsgdesc.c',
+  'mxactdesc.c',
+  'nbtdesc.c',
+  'relmapdesc.c',
+  'replorigindesc.c',
+  'seqdesc.c',
+  'smgrdesc.c',
+  'spgdesc.c',
+  'standbydesc.c',
+  'tblspcdesc.c',
+  'xactdesc.c',
+  'xlogdesc.c',
+)
+
+backend_sources += rmgr_desc_sources
diff --git a/src/backend/access/spgist/meson.build b/src/backend/access/spgist/meson.build
new file mode 100644
index 00000000000..f18d0d2e53f
--- /dev/null
+++ b/src/backend/access/spgist/meson.build
@@ -0,0 +1,13 @@
+backend_sources += files(
+  'spgdoinsert.c',
+  'spginsert.c',
+  'spgkdtreeproc.c',
+  'spgproc.c',
+  'spgquadtreeproc.c',
+  'spgscan.c',
+  'spgtextproc.c',
+  'spgutils.c',
+  'spgvacuum.c',
+  'spgvalidate.c',
+  'spgxlog.c',
+)
diff --git a/src/backend/access/table/meson.build b/src/backend/access/table/meson.build
new file mode 100644
index 00000000000..66c706d640e
--- /dev/null
+++ b/src/backend/access/table/meson.build
@@ -0,0 +1,6 @@
+backend_sources += files(
+  'table.c',
+  'tableam.c',
+  'tableamapi.c',
+  'toast_helper.c',
+)
diff --git a/src/backend/access/tablesample/meson.build b/src/backend/access/tablesample/meson.build
new file mode 100644
index 00000000000..63ee8203226
--- /dev/null
+++ b/src/backend/access/tablesample/meson.build
@@ -0,0 +1,5 @@
+backend_sources += files(
+  'bernoulli.c',
+  'system.c',
+  'tablesample.c',
+)
diff --git a/src/backend/access/transam/meson.build b/src/backend/access/transam/meson.build
new file mode 100644
index 00000000000..c32169bd2c6
--- /dev/null
+++ b/src/backend/access/transam/meson.build
@@ -0,0 +1,31 @@
+backend_sources += files(
+  'clog.c',
+  'commit_ts.c',
+  'generic_xlog.c',
+  'multixact.c',
+  'parallel.c',
+  'rmgr.c',
+  'slru.c',
+  'subtrans.c',
+  'timeline.c',
+  'transam.c',
+  'twophase.c',
+  'twophase_rmgr.c',
+  'varsup.c',
+  'xact.c',
+  'xlog.c',
+  'xlogarchive.c',
+  'xlogfuncs.c',
+  'xloginsert.c',
+  'xlogprefetcher.c',
+  'xlogrecovery.c',
+  'xlogstats.c',
+  'xlogutils.c',
+)
+
+# used by frontend programs to build a frontend xlogreader
+xlogreader_sources = files(
+  'xlogreader.c',
+)
+
+backend_sources += xlogreader_sources
diff --git a/src/backend/backup/meson.build b/src/backend/backup/meson.build
new file mode 100644
index 00000000000..a09305cadfa
--- /dev/null
+++ b/src/backend/backup/meson.build
@@ -0,0 +1,13 @@
+backend_sources += files(
+  'backup_manifest.c',
+  'basebackup.c',
+  'basebackup_copy.c',
+  'basebackup_gzip.c',
+  'basebackup_lz4.c',
+  'basebackup_progress.c',
+  'basebackup_server.c',
+  'basebackup_sink.c',
+  'basebackup_target.c',
+  'basebackup_throttle.c',
+  'basebackup_zstd.c',
+)
diff --git a/src/backend/bootstrap/meson.build b/src/backend/bootstrap/meson.build
new file mode 100644
index 00000000000..2377de121af
--- /dev/null
+++ b/src/backend/bootstrap/meson.build
@@ -0,0 +1,15 @@
+backend_sources += files(
+ 'bootstrap.c')
+
+bootscanner = custom_target('bootscanner',
+  input: ['bootscanner.l'],
+  output: ['bootscanner.c'],
+  command: [flex_cmd, '@INPUT@'],
+)
+generated_sources += bootscanner
+
+generated_backend_sources += custom_target('bootparse',
+  input: ['bootparse.y', bootscanner[0]],
+  output: ['bootparse.c'],
+  command: [bison_cmd, '@INPUT0@'],
+)
diff --git a/src/backend/catalog/meson.build b/src/backend/catalog/meson.build
new file mode 100644
index 00000000000..08747914516
--- /dev/null
+++ b/src/backend/catalog/meson.build
@@ -0,0 +1,44 @@
+backend_sources += files(
+  'aclchk.c',
+  'catalog.c',
+  'dependency.c',
+  'heap.c',
+  'index.c',
+  'indexing.c',
+  'namespace.c',
+  'objectaccess.c',
+  'objectaddress.c',
+  'partition.c',
+  'pg_aggregate.c',
+  'pg_attrdef.c',
+  'pg_cast.c',
+  'pg_class.c',
+  'pg_collation.c',
+  'pg_constraint.c',
+  'pg_conversion.c',
+  'pg_db_role_setting.c',
+  'pg_depend.c',
+  'pg_enum.c',
+  'pg_inherits.c',
+  'pg_largeobject.c',
+  'pg_namespace.c',
+  'pg_operator.c',
+  'pg_parameter_acl.c',
+  'pg_proc.c',
+  'pg_publication.c',
+  'pg_range.c',
+  'pg_shdepend.c',
+  'pg_subscription.c',
+  'pg_type.c',
+  'storage.c',
+  'toasting.c',
+)
+
+
+install_data(
+  'information_schema.sql',
+  'sql_features.txt',
+  'system_functions.sql',
+  'system_views.sql',
+  install_dir: dir_data,
+)
diff --git a/src/backend/commands/meson.build b/src/backend/commands/meson.build
new file mode 100644
index 00000000000..9b350d025ff
--- /dev/null
+++ b/src/backend/commands/meson.build
@@ -0,0 +1,51 @@
+backend_sources += files(
+  'aggregatecmds.c',
+  'alter.c',
+  'amcmds.c',
+  'analyze.c',
+  'async.c',
+  'cluster.c',
+  'collationcmds.c',
+  'comment.c',
+  'constraint.c',
+  'conversioncmds.c',
+  'copy.c',
+  'copyfrom.c',
+  'copyfromparse.c',
+  'copyto.c',
+  'createas.c',
+  'dbcommands.c',
+  'define.c',
+  'discard.c',
+  'dropcmds.c',
+  'event_trigger.c',
+  'explain.c',
+  'extension.c',
+  'foreigncmds.c',
+  'functioncmds.c',
+  'indexcmds.c',
+  'lockcmds.c',
+  'matview.c',
+  'opclasscmds.c',
+  'operatorcmds.c',
+  'policy.c',
+  'portalcmds.c',
+  'prepare.c',
+  'proclang.c',
+  'publicationcmds.c',
+  'schemacmds.c',
+  'seclabel.c',
+  'sequence.c',
+  'statscmds.c',
+  'subscriptioncmds.c',
+  'tablecmds.c',
+  'tablespace.c',
+  'trigger.c',
+  'tsearchcmds.c',
+  'typecmds.c',
+  'user.c',
+  'vacuum.c',
+  'vacuumparallel.c',
+  'variable.c',
+  'view.c',
+)
diff --git a/src/backend/executor/meson.build b/src/backend/executor/meson.build
new file mode 100644
index 00000000000..518674cfa28
--- /dev/null
+++ b/src/backend/executor/meson.build
@@ -0,0 +1,67 @@
+backend_sources += files(
+  'execAmi.c',
+  'execAsync.c',
+  'execCurrent.c',
+  'execExpr.c',
+  'execExprInterp.c',
+  'execGrouping.c',
+  'execIndexing.c',
+  'execJunk.c',
+  'execMain.c',
+  'execParallel.c',
+  'execPartition.c',
+  'execProcnode.c',
+  'execReplication.c',
+  'execSRF.c',
+  'execScan.c',
+  'execTuples.c',
+  'execUtils.c',
+  'functions.c',
+  'instrument.c',
+  'nodeAgg.c',
+  'nodeAppend.c',
+  'nodeBitmapAnd.c',
+  'nodeBitmapHeapscan.c',
+  'nodeBitmapIndexscan.c',
+  'nodeBitmapOr.c',
+  'nodeCtescan.c',
+  'nodeCustom.c',
+  'nodeForeignscan.c',
+  'nodeFunctionscan.c',
+  'nodeGather.c',
+  'nodeGatherMerge.c',
+  'nodeGroup.c',
+  'nodeHash.c',
+  'nodeHashjoin.c',
+  'nodeIncrementalSort.c',
+  'nodeIndexonlyscan.c',
+  'nodeIndexscan.c',
+  'nodeLimit.c',
+  'nodeLockRows.c',
+  'nodeMaterial.c',
+  'nodeMemoize.c',
+  'nodeMergeAppend.c',
+  'nodeMergejoin.c',
+  'nodeModifyTable.c',
+  'nodeNamedtuplestorescan.c',
+  'nodeNestloop.c',
+  'nodeProjectSet.c',
+  'nodeRecursiveunion.c',
+  'nodeResult.c',
+  'nodeSamplescan.c',
+  'nodeSeqscan.c',
+  'nodeSetOp.c',
+  'nodeSort.c',
+  'nodeSubplan.c',
+  'nodeSubqueryscan.c',
+  'nodeTableFuncscan.c',
+  'nodeTidrangescan.c',
+  'nodeTidscan.c',
+  'nodeUnique.c',
+  'nodeValuesscan.c',
+  'nodeWindowAgg.c',
+  'nodeWorktablescan.c',
+  'spi.c',
+  'tqueue.c',
+  'tstoreReceiver.c',
+)
diff --git a/src/backend/foreign/meson.build b/src/backend/foreign/meson.build
new file mode 100644
index 00000000000..57463db92c1
--- /dev/null
+++ b/src/backend/foreign/meson.build
@@ -0,0 +1,3 @@
+backend_sources += files(
+  'foreign.c'
+)
diff --git a/src/backend/jit/llvm/meson.build b/src/backend/jit/llvm/meson.build
new file mode 100644
index 00000000000..de2e624ab58
--- /dev/null
+++ b/src/backend/jit/llvm/meson.build
@@ -0,0 +1,73 @@
+if not llvm.found()
+  subdir_done()
+endif
+
+# Build LLVM JIT backend module
+
+llvmjit_sources = []
+
+# Infrastructure
+llvmjit_sources += files(
+  'llvmjit.c',
+  'llvmjit_error.cpp',
+  'llvmjit_inline.cpp',
+  'llvmjit_wrap.cpp',
+)
+
+# Code generation
+llvmjit_sources += files(
+  'llvmjit_deform.c',
+  'llvmjit_expr.c',
+)
+
+llvmjit = shared_module('llvmjit',
+  llvmjit_sources,
+  kwargs: pg_mod_args + {
+    'dependencies': pg_mod_args['dependencies'] + [llvm],
+  }
+)
+
+backend_targets += llvmjit
+
+
+# Define a few bits and pieces used here and elsewhere to generate bitcode
+
+llvm_irgen_args = [
+  '-c', '-o', '@OUTPUT@', '@INPUT@',
+  '-flto=thin', '-emit-llvm',
+  '-MD', '-MQ', '@OUTPUT@', '-MF', '@DEPFILE@',
+  '-O2',
+  '-Wno-ignored-attributes',
+  '-Wno-empty-body',
+]
+
+if ccache.found()
+  llvm_irgen_command = ccache
+  llvm_irgen_args = [clang.path()] + llvm_irgen_args
+else
+  llvm_irgen_command = clang
+endif
+
+
+# XXX: Need to determine proper version of the function cflags for clang
+bitcode_cflags = ['-fno-strict-aliasing', '-fwrapv']
+bitcode_cflags += cppflags
+
+# XXX: Worth improving on the logic to find directories here
+bitcode_cflags += '-I@BUILD_ROOT@/src/include'
+bitcode_cflags += '-I@BUILD_ROOT@/src/backend/utils/misc'
+bitcode_cflags += '-I@SOURCE_ROOT@/src/include'
+
+
+# Note this is intentionally not installed to bitcodedir, as it's not for
+# inlining
+llvmjit_types = custom_target('llvmjit_types.bc',
+  command: [llvm_irgen_command] + llvm_irgen_args + bitcode_cflags,
+  input: 'llvmjit_types.c',
+  output: 'llvmjit_types.bc',
+  depends: [postgres],
+  install: true,
+  install_dir: dir_lib_pkg,
+  depfile: '@BASENAME@.c.bc.d',
+)
+backend_targets += llvmjit_types
diff --git a/src/backend/jit/meson.build b/src/backend/jit/meson.build
new file mode 100644
index 00000000000..63cd33a4bed
--- /dev/null
+++ b/src/backend/jit/meson.build
@@ -0,0 +1,3 @@
+backend_sources += files(
+  'jit.c'
+)
diff --git a/src/backend/lib/meson.build b/src/backend/lib/meson.build
new file mode 100644
index 00000000000..48da1bddce7
--- /dev/null
+++ b/src/backend/lib/meson.build
@@ -0,0 +1,12 @@
+backend_sources += files(
+  'binaryheap.c',
+  'bipartite_match.c',
+  'bloomfilter.c',
+  'dshash.c',
+  'hyperloglog.c',
+  'ilist.c',
+  'integerset.c',
+  'knapsack.c',
+  'pairingheap.c',
+  'rbtree.c',
+)
diff --git a/src/backend/libpq/meson.build b/src/backend/libpq/meson.build
new file mode 100644
index 00000000000..6061269ef13
--- /dev/null
+++ b/src/backend/libpq/meson.build
@@ -0,0 +1,32 @@
+backend_sources += files(
+  'auth-sasl.c',
+  'auth-scram.c',
+  'auth.c',
+  'be-fsstubs.c',
+  'be-secure-common.c',
+  'be-secure.c',
+  'crypt.c',
+  'hba.c',
+  'ifaddr.c',
+  'pqcomm.c',
+  'pqformat.c',
+  'pqmq.c',
+  'pqsignal.c',
+)
+
+if ssl.found()
+  backend_sources += files('be-secure-openssl.c')
+endif
+
+if gssapi.found()
+  backend_sources += files(
+    'be-secure-gssapi.c',
+    'be-gssapi-common.c'
+  )
+endif
+
+install_data(
+  'pg_hba.conf.sample',
+  'pg_ident.conf.sample',
+  install_dir: dir_data,
+)
diff --git a/src/backend/main/meson.build b/src/backend/main/meson.build
new file mode 100644
index 00000000000..241e125f089
--- /dev/null
+++ b/src/backend/main/meson.build
@@ -0,0 +1,2 @@
+main_file = files('main.c')
+backend_sources += main_file
diff --git a/src/backend/meson.build b/src/backend/meson.build
new file mode 100644
index 00000000000..02eba01cdc6
--- /dev/null
+++ b/src/backend/meson.build
@@ -0,0 +1,187 @@
+backend_build_deps = [backend_code]
+backend_sources = []
+backend_link_with = [pgport_srv, common_srv]
+
+generated_backend_sources = []
+
+subdir('access')
+subdir('backup')
+subdir('bootstrap')
+subdir('catalog')
+subdir('commands')
+subdir('executor')
+subdir('foreign')
+subdir('jit')
+subdir('lib')
+subdir('libpq')
+subdir('main')
+subdir('nodes')
+subdir('optimizer')
+subdir('parser')
+subdir('partitioning')
+subdir('port')
+subdir('postmaster')
+subdir('regex')
+subdir('replication')
+subdir('rewrite')
+subdir('statistics')
+subdir('storage')
+subdir('tcop')
+subdir('tsearch')
+subdir('utils')
+
+subdir('po', if_found: libintl)
+
+
+backend_link_args = []
+backend_link_depends = []
+
+
+# On windows when compiling with msvc we need to make postgres export all its
+# symbols so that extension libraries can use them. For that we need to scan
+# the constituting objects and generate a file specifying all the functions as
+# exported (variables need an "import" declaration in the header, hence
+# PGDLLEXPORT, but functions work without that, due to import libraries
+# basically being trampolines).
+#
+# For dtrace probes we need to invoke dtrace on all input files, before
+# linking the final executable (see more below).
+#
+#
+# On meson there's currently no easy way to do this that I found. So we build
+# a static library with all the input objects, run our script to generate
+# exports, and build the final executable using that static library
+#
+# We could do that only if either dtrace or msvc is in use, but it seems
+# easier to just always do so.
+
+postgres_lib = static_library('postgres',
+  backend_sources + timezone_sources + generated_backend_sources,
+  link_whole: backend_link_with,
+  dependencies: backend_build_deps,
+  kwargs: internal_lib_args,
+)
+
+if cc.get_id() == 'msvc'
+  postgres_def = custom_target('postgres.def',
+    command: [perl, files('../tools/msvc/gendef.pl'),
+              '--arch', host_cpu,
+              '--tempdir', '@PRIVATE_DIR@',
+              '--deffile', '@OUTPUT@',
+              '@INPUT@'],
+    input: [postgres_lib, common_srv, pgport_srv],
+    output: 'postgres.def',
+    depends: [postgres_lib, common_srv, pgport_srv],
+    install: false,
+    build_by_default: false,
+  )
+
+  backend_link_args += '/DEF:@0@'.format(postgres_def.full_path())
+  backend_link_depends += postgres_def
+
+elif host_system == 'aix'
+  # The '.' argument leads mkldexport.sh to emit "#! .", which refers to the
+  # main executable, allowing extension libraries to resolve their undefined
+  # symbols to symbols in the postgres binary.
+  postgres_imp = custom_target('postgres.imp',
+    command: [files('port/aix/mkldexport.sh'), '@INPUT@', '.'],
+    input: postgres_lib,
+    output: 'postgres.imp',
+    capture: true,
+    install: true,
+    install_dir: dir_lib,
+    build_by_default: false,
+  )
+  backend_link_args += '-Wl,-bE:@0@'.format(postgres_imp.full_path())
+  backend_link_depends += postgres_imp
+endif
+
+backend_input = []
+backend_objs = [postgres_lib.extract_all_objects(recursive: false)]
+
+# As of 1/2010:
+# The probes.o file is necessary for dtrace support on Solaris, and on recent
+# versions of systemtap.  (Older systemtap releases just produce an empty
+# file, but that's okay.)  However, macOS's dtrace doesn't use it and doesn't
+# even recognize the -G option.  So, build probes.o except on macOS.
+# This might need adjustment as other platforms add dtrace support.
+#
+# On at least linux we don't actually need to pass in all the objects, but
+# at least on FreeBSD and Solaris we have to.
+#
+# XXX: The reason we don't use the objects for generated sources is that
+# hits a meson bug. Luckily we don't don't have probes in generated
+# sources...
+if dtrace.found() and host_system != 'darwin'
+  backend_input += custom_target(
+    'probes.o',
+    input: ['utils/probes.d', postgres_lib.extract_objects(backend_sources, timezone_sources)],
+    output: 'probes.o',
+    command: [dtrace, '-C', '-G', '-o', '@OUTPUT@', '-s', '@INPUT@'],
+    install: false,
+  )
+endif
+
+postgres = executable('postgres',
+  backend_input,
+  objects: backend_objs,
+  link_args: backend_link_args,
+  link_with: backend_link_with,
+  link_depends: backend_link_depends,
+  export_dynamic: true,
+  implib: true,
+  dependencies: backend_build_deps,
+  kwargs: default_bin_args,
+)
+
+backend_targets += postgres
+
+pg_mod_c_args = cflags_mod
+pg_mod_cpp_args = cxxflags_mod
+pg_mod_link_args = ldflags_sl + ldflags_mod
+pg_mod_link_depend = []
+
+# A few platforms like MacOS and Windows link shared modules against postgres,
+# or a [import] library derived from it. Set up the link flags for that.
+if mod_link_args_fmt.length() > 0
+  # To avoid unnecessary build-time dependencies on other operating systems,
+  # only the dependency when it when necessary.
+  pg_mod_link_depend += postgres
+
+  name = mod_link_with_name.format('postgres')
+  link_with_uninst = meson.current_build_dir() / name
+  link_with_inst = '${@0@}/@1@'.format(mod_link_with_dir, name)
+
+  foreach el : mod_link_args_fmt
+    pg_mod_link_args += el.format(link_with_uninst)
+  endforeach
+endif
+
+
+# Note there's intentionally no dependency on pgport/common here - we want the
+# symbols from the main binary for extension modules, rather than the
+# extension linking separately to pgport/common.
+backend_mod_code = declare_dependency(
+  compile_args: pg_mod_c_args,
+  include_directories: postgres_inc,
+  link_args: pg_mod_link_args,
+  sources: generated_headers + generated_backend_headers,
+  dependencies: backend_mod_deps,
+)
+
+pg_mod_args = default_mod_args + {
+  'dependencies': [backend_mod_code],
+  'cpp_args': pg_mod_cpp_args,
+  'link_depends': pg_mod_link_depend,
+}
+
+
+
+# Shared modules that, on some system, link against the server binary. Only
+# enter these after we defined the server build.
+
+subdir('jit/llvm')
+subdir('replication/libpqwalreceiver')
+subdir('replication/pgoutput')
+subdir('snowball')
+subdir('utils/mb/conversion_procs')
diff --git a/src/backend/nodes/meson.build b/src/backend/nodes/meson.build
new file mode 100644
index 00000000000..8e0d4039f24
--- /dev/null
+++ b/src/backend/nodes/meson.build
@@ -0,0 +1,29 @@
+backend_sources += files(
+  'bitmapset.c',
+  'extensible.c',
+  'list.c',
+  'makefuncs.c',
+  'nodeFuncs.c',
+  'nodes.c',
+  'params.c',
+  'print.c',
+  'read.c',
+  'tidbitmap.c',
+  'value.c',
+)
+
+# these include .c files generated in ../../include/nodes, seems nicer to not
+# add that as an include path for the whole backend
+nodefunc_sources = files(
+  'copyfuncs.c',
+  'equalfuncs.c',
+  'outfuncs.c',
+  'readfuncs.c',
+)
+nodefuncs = static_library('nodefuncs',
+  nodefunc_sources,
+  dependencies: [backend_code],
+  include_directories: include_directories('../../include/nodes'),
+  kwargs: internal_lib_args,
+)
+backend_link_with += nodefuncs
diff --git a/src/backend/optimizer/geqo/meson.build b/src/backend/optimizer/geqo/meson.build
new file mode 100644
index 00000000000..c04f1dc2dfd
--- /dev/null
+++ b/src/backend/optimizer/geqo/meson.build
@@ -0,0 +1,17 @@
+backend_sources += files(
+  'geqo_copy.c',
+  'geqo_cx.c',
+  'geqo_erx.c',
+  'geqo_eval.c',
+  'geqo_main.c',
+  'geqo_misc.c',
+  'geqo_mutation.c',
+  'geqo_ox1.c',
+  'geqo_ox2.c',
+  'geqo_pmx.c',
+  'geqo_pool.c',
+  'geqo_px.c',
+  'geqo_random.c',
+  'geqo_recombination.c',
+  'geqo_selection.c',
+)
diff --git a/src/backend/optimizer/meson.build b/src/backend/optimizer/meson.build
new file mode 100644
index 00000000000..1ab1d9934ae
--- /dev/null
+++ b/src/backend/optimizer/meson.build
@@ -0,0 +1,5 @@
+subdir('geqo')
+subdir('path')
+subdir('plan')
+subdir('prep')
+subdir('util')
diff --git a/src/backend/optimizer/path/meson.build b/src/backend/optimizer/path/meson.build
new file mode 100644
index 00000000000..310042e7aee
--- /dev/null
+++ b/src/backend/optimizer/path/meson.build
@@ -0,0 +1,11 @@
+backend_sources += files(
+  'allpaths.c',
+  'clausesel.c',
+  'costsize.c',
+  'equivclass.c',
+  'indxpath.c',
+  'joinpath.c',
+  'joinrels.c',
+  'pathkeys.c',
+  'tidpath.c',
+)
diff --git a/src/backend/optimizer/plan/meson.build b/src/backend/optimizer/plan/meson.build
new file mode 100644
index 00000000000..22ec65a3845
--- /dev/null
+++ b/src/backend/optimizer/plan/meson.build
@@ -0,0 +1,10 @@
+backend_sources += files(
+  'analyzejoins.c',
+  'createplan.c',
+  'initsplan.c',
+  'planagg.c',
+  'planmain.c',
+  'planner.c',
+  'setrefs.c',
+  'subselect.c',
+)
diff --git a/src/backend/optimizer/prep/meson.build b/src/backend/optimizer/prep/meson.build
new file mode 100644
index 00000000000..4549a5b0e79
--- /dev/null
+++ b/src/backend/optimizer/prep/meson.build
@@ -0,0 +1,7 @@
+backend_sources += files(
+  'prepagg.c',
+  'prepjointree.c',
+  'prepqual.c',
+  'preptlist.c',
+  'prepunion.c',
+)
diff --git a/src/backend/optimizer/util/meson.build b/src/backend/optimizer/util/meson.build
new file mode 100644
index 00000000000..e7ceaf566b5
--- /dev/null
+++ b/src/backend/optimizer/util/meson.build
@@ -0,0 +1,16 @@
+backend_sources += files(
+  'appendinfo.c',
+  'clauses.c',
+  'inherit.c',
+  'joininfo.c',
+  'orclauses.c',
+  'paramassign.c',
+  'pathnode.c',
+  'placeholder.c',
+  'plancat.c',
+  'predtest.c',
+  'relnode.c',
+  'restrictinfo.c',
+  'tlist.c',
+  'var.c',
+)
diff --git a/src/backend/parser/meson.build b/src/backend/parser/meson.build
new file mode 100644
index 00000000000..62621fd42a0
--- /dev/null
+++ b/src/backend/parser/meson.build
@@ -0,0 +1,49 @@
+backend_sources += files(
+  'analyze.c',
+  'parse_agg.c',
+  'parse_clause.c',
+  'parse_coerce.c',
+  'parse_collate.c',
+  'parse_cte.c',
+  'parse_enr.c',
+  'parse_expr.c',
+  'parse_func.c',
+  'parse_jsontable.c',
+  'parse_merge.c',
+  'parse_node.c',
+  'parse_oper.c',
+  'parse_param.c',
+  'parse_relation.c',
+  'parse_target.c',
+  'parse_type.c',
+  'parse_utilcmd.c',
+  'scansup.c',
+)
+
+# Build a small utility static lib for the parser. This makes it easier to not
+# depend on gram.h already having been generated for most of the other code
+# (which depends on generated headers having been generated). The generation
+# of the parser is slow...
+
+parser_sources = [files('parser.c')]
+
+backend_scanner = custom_target('scan',
+  input: ['scan.l'],
+  output: ['scan.c'],
+  command: [flex_cmd, flex_backup, flex_fix_warning, '-CF', '-p', '-p', '@INPUT@'],
+)
+generated_sources += backend_scanner
+parser_sources += backend_scanner
+
+parser_sources += backend_parser_code
+parser_sources += backend_parser_header
+
+generated_sources += backend_parser_code
+generated_sources += backend_parser_header
+
+parser = static_library('parser',
+  parser_sources + generated_headers,
+  dependencies: [backend_code],
+  kwargs: internal_lib_args,
+)
+backend_link_with += parser
diff --git a/src/backend/partitioning/meson.build b/src/backend/partitioning/meson.build
new file mode 100644
index 00000000000..e5e3806a0cc
--- /dev/null
+++ b/src/backend/partitioning/meson.build
@@ -0,0 +1,5 @@
+backend_sources += files(
+  'partbounds.c',
+  'partdesc.c',
+  'partprune.c',
+)
diff --git a/src/backend/po/meson.build b/src/backend/po/meson.build
new file mode 100644
index 00000000000..4ace0554680
--- /dev/null
+++ b/src/backend/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('postgres-' + pg_version_major.to_string())
diff --git a/src/backend/port/meson.build b/src/backend/port/meson.build
new file mode 100644
index 00000000000..a22c25dd952
--- /dev/null
+++ b/src/backend/port/meson.build
@@ -0,0 +1,31 @@
+backend_sources += files(
+  'atomics.c',
+)
+
+
+if cdata.has('USE_UNNAMED_POSIX_SEMAPHORES') or cdata.has('USE_NAMED_POSIX_SEMAPHORES')
+  backend_sources += files('posix_sema.c')
+endif
+
+if cdata.has('USE_SYSV_SEMAPHORES')
+  backend_sources += files('sysv_sema.c')
+endif
+
+if cdata.has('USE_WIN32_SEMAPHORES')
+  backend_sources += files('win32_sema.c')
+endif
+
+if cdata.has('USE_SYSV_SHARED_MEMORY')
+  backend_sources += files('sysv_shmem.c')
+endif
+
+if cdata.has('USE_WIN32_SHARED_MEMORY')
+  backend_sources += files('win32_shmem.c')
+endif
+
+if host_system == 'windows'
+  subdir('win32')
+endif
+
+# autoconf generates the file there, ensure we get a conflict
+generated_sources_ac += {'src/backend/port': ['pg_sema.c', 'pg_shmem.c', 'tas.s']}
diff --git a/src/backend/port/win32/meson.build b/src/backend/port/win32/meson.build
new file mode 100644
index 00000000000..68fe4cc3cd0
--- /dev/null
+++ b/src/backend/port/win32/meson.build
@@ -0,0 +1,6 @@
+backend_sources += files(
+  'crashdump.c',
+  'signal.c',
+  'socket.c',
+  'timer.c',
+)
diff --git a/src/backend/postmaster/meson.build b/src/backend/postmaster/meson.build
new file mode 100644
index 00000000000..293a44ca295
--- /dev/null
+++ b/src/backend/postmaster/meson.build
@@ -0,0 +1,15 @@
+backend_sources += files(
+  'autovacuum.c',
+  'auxprocess.c',
+  'bgworker.c',
+  'bgwriter.c',
+  'checkpointer.c',
+  'fork_process.c',
+  'interrupt.c',
+  'pgarch.c',
+  'postmaster.c',
+  'shell_archive.c',
+  'startup.c',
+  'syslogger.c',
+  'walwriter.c',
+)
diff --git a/src/backend/regex/meson.build b/src/backend/regex/meson.build
new file mode 100644
index 00000000000..c84e57fdba5
--- /dev/null
+++ b/src/backend/regex/meson.build
@@ -0,0 +1,8 @@
+backend_sources += files(
+  'regcomp.c',
+  'regerror.c',
+  'regexec.c',
+  'regexport.c',
+  'regfree.c',
+  'regprefix.c',
+)
diff --git a/src/backend/replication/libpqwalreceiver/meson.build b/src/backend/replication/libpqwalreceiver/meson.build
new file mode 100644
index 00000000000..3fc786c80a0
--- /dev/null
+++ b/src/backend/replication/libpqwalreceiver/meson.build
@@ -0,0 +1,13 @@
+libpqwalreceiver_sources = files(
+  'libpqwalreceiver.c',
+)
+
+libpqwalreceiver = shared_module('pqwalreceiver',
+  libpqwalreceiver_sources,
+  kwargs: pg_mod_args + {
+    'name_prefix': 'lib',
+    'dependencies': pg_mod_args['dependencies'] + [libpq],
+  }
+)
+
+backend_targets += libpqwalreceiver
diff --git a/src/backend/replication/logical/meson.build b/src/backend/replication/logical/meson.build
new file mode 100644
index 00000000000..773583a12ba
--- /dev/null
+++ b/src/backend/replication/logical/meson.build
@@ -0,0 +1,14 @@
+backend_sources += files(
+  'decode.c',
+  'launcher.c',
+  'logical.c',
+  'logicalfuncs.c',
+  'message.c',
+  'origin.c',
+  'proto.c',
+  'relation.c',
+  'reorderbuffer.c',
+  'snapbuild.c',
+  'tablesync.c',
+  'worker.c',
+)
diff --git a/src/backend/replication/meson.build b/src/backend/replication/meson.build
new file mode 100644
index 00000000000..01d6adda2ea
--- /dev/null
+++ b/src/backend/replication/meson.build
@@ -0,0 +1,45 @@
+backend_sources += files(
+  'slot.c',
+  'slotfuncs.c',
+  'syncrep.c',
+  'walreceiver.c',
+  'walreceiverfuncs.c',
+  'walsender.c',
+)
+
+# [sync]repl_scanner is compiled as part of [sync]repl_gram. The
+# ordering is enforced by making the generation of grammar depend on
+# the scanner generation. That's unnecessarily strict, but overall
+# harmless.
+
+repl_scanner = custom_target('repl_scanner',
+  input: files('repl_scanner.l'),
+  output: ['repl_scanner.c'],
+  command: [flex_cmd, '@INPUT@'],
+)
+generated_sources += repl_scanner
+
+generated_backend_sources += custom_target('repl_gram',
+  input: 'repl_gram.y',
+  output: 'repl_gram.c',
+  depends: repl_scanner,
+  command: [bison_cmd, '@INPUT@'],
+)
+
+
+syncrep_scanner = custom_target('syncrep_scanner',
+  input: 'syncrep_scanner.l',
+  output: 'syncrep_scanner.c',
+  command: [flex_cmd, '@INPUT@'],
+)
+generated_sources += syncrep_scanner
+
+generated_backend_sources += custom_target('syncrep_gram',
+  input: 'syncrep_gram.y',
+  output: 'syncrep_gram.c',
+  depends: syncrep_scanner,
+  command: [bison_cmd, '@INPUT@'],
+)
+
+
+subdir('logical')
diff --git a/src/backend/replication/pgoutput/meson.build b/src/backend/replication/pgoutput/meson.build
new file mode 100644
index 00000000000..8ff0a0c6133
--- /dev/null
+++ b/src/backend/replication/pgoutput/meson.build
@@ -0,0 +1,11 @@
+pgoutput_sources = files(
+  'pgoutput.c',
+)
+
+pgoutput = shared_module('pgoutput',
+  pgoutput_sources,
+  kwargs: pg_mod_args + {
+  }
+)
+
+backend_targets += pgoutput
diff --git a/src/backend/rewrite/meson.build b/src/backend/rewrite/meson.build
new file mode 100644
index 00000000000..21fa0e230b0
--- /dev/null
+++ b/src/backend/rewrite/meson.build
@@ -0,0 +1,9 @@
+backend_sources += files(
+  'rewriteDefine.c',
+  'rewriteHandler.c',
+  'rewriteManip.c',
+  'rewriteRemove.c',
+  'rewriteSearchCycle.c',
+  'rewriteSupport.c',
+  'rowsecurity.c',
+)
diff --git a/src/backend/snowball/meson.build b/src/backend/snowball/meson.build
new file mode 100644
index 00000000000..8c6f685cb32
--- /dev/null
+++ b/src/backend/snowball/meson.build
@@ -0,0 +1,88 @@
+dict_snowball_sources = files(
+  'libstemmer/api.c',
+  'libstemmer/utilities.c',
+  'dict_snowball.c',
+)
+
+dict_snowball_sources += files(
+  'libstemmer/stem_ISO_8859_1_basque.c',
+  'libstemmer/stem_ISO_8859_1_catalan.c',
+  'libstemmer/stem_ISO_8859_1_danish.c',
+  'libstemmer/stem_ISO_8859_1_dutch.c',
+  'libstemmer/stem_ISO_8859_1_english.c',
+  'libstemmer/stem_ISO_8859_1_finnish.c',
+  'libstemmer/stem_ISO_8859_1_french.c',
+  'libstemmer/stem_ISO_8859_1_german.c',
+  'libstemmer/stem_ISO_8859_1_indonesian.c',
+  'libstemmer/stem_ISO_8859_1_irish.c',
+  'libstemmer/stem_ISO_8859_1_italian.c',
+  'libstemmer/stem_ISO_8859_1_norwegian.c',
+  'libstemmer/stem_ISO_8859_1_porter.c',
+  'libstemmer/stem_ISO_8859_1_portuguese.c',
+  'libstemmer/stem_ISO_8859_1_spanish.c',
+  'libstemmer/stem_ISO_8859_1_swedish.c',
+  'libstemmer/stem_ISO_8859_2_hungarian.c',
+  'libstemmer/stem_ISO_8859_2_romanian.c',
+  'libstemmer/stem_KOI8_R_russian.c',
+  'libstemmer/stem_UTF_8_arabic.c',
+  'libstemmer/stem_UTF_8_armenian.c',
+  'libstemmer/stem_UTF_8_basque.c',
+  'libstemmer/stem_UTF_8_catalan.c',
+  'libstemmer/stem_UTF_8_danish.c',
+  'libstemmer/stem_UTF_8_dutch.c',
+  'libstemmer/stem_UTF_8_english.c',
+  'libstemmer/stem_UTF_8_finnish.c',
+  'libstemmer/stem_UTF_8_french.c',
+  'libstemmer/stem_UTF_8_german.c',
+  'libstemmer/stem_UTF_8_greek.c',
+  'libstemmer/stem_UTF_8_hindi.c',
+  'libstemmer/stem_UTF_8_hungarian.c',
+  'libstemmer/stem_UTF_8_indonesian.c',
+  'libstemmer/stem_UTF_8_irish.c',
+  'libstemmer/stem_UTF_8_italian.c',
+  'libstemmer/stem_UTF_8_lithuanian.c',
+  'libstemmer/stem_UTF_8_nepali.c',
+  'libstemmer/stem_UTF_8_norwegian.c',
+  'libstemmer/stem_UTF_8_porter.c',
+  'libstemmer/stem_UTF_8_portuguese.c',
+  'libstemmer/stem_UTF_8_romanian.c',
+  'libstemmer/stem_UTF_8_russian.c',
+  'libstemmer/stem_UTF_8_serbian.c',
+  'libstemmer/stem_UTF_8_spanish.c',
+  'libstemmer/stem_UTF_8_swedish.c',
+  'libstemmer/stem_UTF_8_tamil.c',
+  'libstemmer/stem_UTF_8_turkish.c',
+  'libstemmer/stem_UTF_8_yiddish.c',
+)
+
+# see comment in src/include/snowball/header.h
+stemmer_inc = include_directories('../../include/snowball')
+
+dict_snowball = shared_module('dict_snowball',
+  dict_snowball_sources,
+  kwargs: pg_mod_args + {
+    'include_directories': [stemmer_inc],
+  }
+)
+
+snowball_create = custom_target('snowball_create',
+  output: ['snowball_create.sql'],
+  depfile: 'snowball_create.dep',
+  command: [
+    perl, files('snowball_create.pl'),
+    '--depfile',
+    '--input', '@CURRENT_SOURCE_DIR@',
+    '--outdir', '@OUTDIR@',
+  ],
+  install: true,
+  install_dir: dir_data,
+)
+generated_sources += snowball_create
+
+install_subdir('stopwords',
+  install_dir: dir_data / 'tsearch_data',
+  strip_directory: true,
+)
+
+backend_targets += dict_snowball
+backend_targets += snowball_create
diff --git a/src/backend/statistics/meson.build b/src/backend/statistics/meson.build
new file mode 100644
index 00000000000..8530c55f73c
--- /dev/null
+++ b/src/backend/statistics/meson.build
@@ -0,0 +1,6 @@
+backend_sources += files(
+  'dependencies.c',
+  'extended_stats.c',
+  'mcv.c',
+  'mvdistinct.c',
+)
diff --git a/src/backend/storage/buffer/meson.build b/src/backend/storage/buffer/meson.build
new file mode 100644
index 00000000000..56a59b52484
--- /dev/null
+++ b/src/backend/storage/buffer/meson.build
@@ -0,0 +1,7 @@
+backend_sources += files(
+  'buf_init.c',
+  'buf_table.c',
+  'bufmgr.c',
+  'freelist.c',
+  'localbuf.c',
+)
diff --git a/src/backend/storage/file/meson.build b/src/backend/storage/file/meson.build
new file mode 100644
index 00000000000..e1d5047d4aa
--- /dev/null
+++ b/src/backend/storage/file/meson.build
@@ -0,0 +1,8 @@
+backend_sources += files(
+  'buffile.c',
+  'copydir.c',
+  'fd.c',
+  'fileset.c',
+  'reinit.c',
+  'sharedfileset.c',
+)
diff --git a/src/backend/storage/freespace/meson.build b/src/backend/storage/freespace/meson.build
new file mode 100644
index 00000000000..e4200ea6527
--- /dev/null
+++ b/src/backend/storage/freespace/meson.build
@@ -0,0 +1,5 @@
+backend_sources += files(
+  'freespace.c',
+  'fsmpage.c',
+  'indexfsm.c',
+)
diff --git a/src/backend/storage/ipc/meson.build b/src/backend/storage/ipc/meson.build
new file mode 100644
index 00000000000..516bc1d0193
--- /dev/null
+++ b/src/backend/storage/ipc/meson.build
@@ -0,0 +1,20 @@
+backend_sources += files(
+  'barrier.c',
+  'dsm.c',
+  'dsm_impl.c',
+  'ipc.c',
+  'ipci.c',
+  'latch.c',
+  'pmsignal.c',
+  'procarray.c',
+  'procsignal.c',
+  'shm_mq.c',
+  'shm_toc.c',
+  'shmem.c',
+  'shmqueue.c',
+  'signalfuncs.c',
+  'sinval.c',
+  'sinvaladt.c',
+  'standby.c',
+
+)
diff --git a/src/backend/storage/large_object/meson.build b/src/backend/storage/large_object/meson.build
new file mode 100644
index 00000000000..8a181ab9b34
--- /dev/null
+++ b/src/backend/storage/large_object/meson.build
@@ -0,0 +1,3 @@
+backend_sources += files(
+  'inv_api.c',
+)
diff --git a/src/backend/storage/lmgr/meson.build b/src/backend/storage/lmgr/meson.build
new file mode 100644
index 00000000000..68237c8a2e8
--- /dev/null
+++ b/src/backend/storage/lmgr/meson.build
@@ -0,0 +1,13 @@
+backend_sources += files(
+  'condition_variable.c',
+  'deadlock.c',
+  'lmgr.c',
+  'lock.c',
+  'lwlock.c',
+  'predicate.c',
+  'proc.c',
+  's_lock.c',
+  'spin.c',
+)
+
+generated_backend_sources += lwlocknames[1]
diff --git a/src/backend/storage/meson.build b/src/backend/storage/meson.build
new file mode 100644
index 00000000000..daad628d74c
--- /dev/null
+++ b/src/backend/storage/meson.build
@@ -0,0 +1,9 @@
+subdir('buffer')
+subdir('file')
+subdir('freespace')
+subdir('ipc')
+subdir('large_object')
+subdir('lmgr')
+subdir('page')
+subdir('smgr')
+subdir('sync')
diff --git a/src/backend/storage/page/meson.build b/src/backend/storage/page/meson.build
new file mode 100644
index 00000000000..2ecd16c952c
--- /dev/null
+++ b/src/backend/storage/page/meson.build
@@ -0,0 +1,5 @@
+backend_sources += files(
+  'bufpage.c',
+  'checksum.c',
+  'itemptr.c',
+)
diff --git a/src/backend/storage/smgr/meson.build b/src/backend/storage/smgr/meson.build
new file mode 100644
index 00000000000..fdeb1223b32
--- /dev/null
+++ b/src/backend/storage/smgr/meson.build
@@ -0,0 +1,4 @@
+backend_sources += files(
+  'md.c',
+  'smgr.c',
+)
diff --git a/src/backend/storage/sync/meson.build b/src/backend/storage/sync/meson.build
new file mode 100644
index 00000000000..05148b91a8e
--- /dev/null
+++ b/src/backend/storage/sync/meson.build
@@ -0,0 +1,4 @@
+backend_sources += files(
+  'sync.c',
+
+)
diff --git a/src/backend/tcop/meson.build b/src/backend/tcop/meson.build
new file mode 100644
index 00000000000..fb54aae8122
--- /dev/null
+++ b/src/backend/tcop/meson.build
@@ -0,0 +1,8 @@
+backend_sources += files(
+  'cmdtag.c',
+  'dest.c',
+  'fastpath.c',
+  'postgres.c',
+  'pquery.c',
+  'utility.c',
+)
diff --git a/src/backend/tsearch/meson.build b/src/backend/tsearch/meson.build
new file mode 100644
index 00000000000..4144e9befc5
--- /dev/null
+++ b/src/backend/tsearch/meson.build
@@ -0,0 +1,21 @@
+backend_sources += files(
+  'dict.c',
+  'dict_ispell.c',
+  'dict_simple.c',
+  'dict_synonym.c',
+  'dict_thesaurus.c',
+  'regis.c',
+  'spell.c',
+  'to_tsany.c',
+  'ts_locale.c',
+  'ts_parse.c',
+  'ts_selfuncs.c',
+  'ts_typanalyze.c',
+  'ts_utils.c',
+  'wparser.c',
+  'wparser_def.c',
+)
+
+install_subdir('dicts',
+  install_dir: dir_data / 'tsearch_data',
+  strip_directory: true)
diff --git a/src/backend/utils/activity/meson.build b/src/backend/utils/activity/meson.build
new file mode 100644
index 00000000000..5b3b558a67d
--- /dev/null
+++ b/src/backend/utils/activity/meson.build
@@ -0,0 +1,18 @@
+backend_sources += files(
+  'backend_progress.c',
+  'backend_status.c',
+  'pgstat.c',
+  'pgstat_archiver.c',
+  'pgstat_bgwriter.c',
+  'pgstat_checkpointer.c',
+  'pgstat_database.c',
+  'pgstat_function.c',
+  'pgstat_relation.c',
+  'pgstat_replslot.c',
+  'pgstat_shmem.c',
+  'pgstat_slru.c',
+  'pgstat_subscription.c',
+  'pgstat_wal.c',
+  'pgstat_xact.c',
+  'wait_event.c',
+)
diff --git a/src/backend/utils/adt/meson.build b/src/backend/utils/adt/meson.build
new file mode 100644
index 00000000000..22cdb2c20ec
--- /dev/null
+++ b/src/backend/utils/adt/meson.build
@@ -0,0 +1,122 @@
+backend_sources += files(
+  'acl.c',
+  'amutils.c',
+  'array_expanded.c',
+  'array_selfuncs.c',
+  'array_typanalyze.c',
+  'array_userfuncs.c',
+  'arrayfuncs.c',
+  'arraysubs.c',
+  'arrayutils.c',
+  'ascii.c',
+  'bool.c',
+  'cash.c',
+  'char.c',
+  'cryptohashfuncs.c',
+  'date.c',
+  'datetime.c',
+  'datum.c',
+  'dbsize.c',
+  'domains.c',
+  'encode.c',
+  'enum.c',
+  'expandeddatum.c',
+  'expandedrecord.c',
+  'float.c',
+  'format_type.c',
+  'formatting.c',
+  'genfile.c',
+  'geo_ops.c',
+  'geo_selfuncs.c',
+  'geo_spgist.c',
+  'hbafuncs.c',
+  'inet_cidr_ntop.c',
+  'inet_net_pton.c',
+  'int.c',
+  'int8.c',
+  'json.c',
+  'jsonb.c',
+  'jsonb_gin.c',
+  'jsonb_op.c',
+  'jsonb_util.c',
+  'jsonbsubs.c',
+  'jsonfuncs.c',
+  'jsonpath.c',
+  'jsonpath_exec.c',
+  'like.c',
+  'like_support.c',
+  'lockfuncs.c',
+  'mac.c',
+  'mac8.c',
+  'mcxtfuncs.c',
+  'misc.c',
+  'multirangetypes.c',
+  'multirangetypes_selfuncs.c',
+  'name.c',
+  'network.c',
+  'network_gist.c',
+  'network_selfuncs.c',
+  'network_spgist.c',
+  'numeric.c',
+  'numutils.c',
+  'oid.c',
+  'oracle_compat.c',
+  'orderedsetaggs.c',
+  'partitionfuncs.c',
+  'pg_locale.c',
+  'pg_lsn.c',
+  'pg_upgrade_support.c',
+  'pgstatfuncs.c',
+  'pseudotypes.c',
+  'quote.c',
+  'rangetypes.c',
+  'rangetypes_gist.c',
+  'rangetypes_selfuncs.c',
+  'rangetypes_spgist.c',
+  'rangetypes_typanalyze.c',
+  'regexp.c',
+  'regproc.c',
+  'ri_triggers.c',
+  'rowtypes.c',
+  'ruleutils.c',
+  'selfuncs.c',
+  'tid.c',
+  'timestamp.c',
+  'trigfuncs.c',
+  'tsginidx.c',
+  'tsgistidx.c',
+  'tsquery.c',
+  'tsquery_cleanup.c',
+  'tsquery_gist.c',
+  'tsquery_op.c',
+  'tsquery_rewrite.c',
+  'tsquery_util.c',
+  'tsrank.c',
+  'tsvector.c',
+  'tsvector_op.c',
+  'tsvector_parser.c',
+  'uuid.c',
+  'varbit.c',
+  'varchar.c',
+  'varlena.c',
+  'version.c',
+  'windowfuncs.c',
+  'xid.c',
+  'xid8funcs.c',
+  'xml.c',
+)
+
+
+jsonpath_scan = custom_target('jsonpath_scan',
+  input: ['jsonpath_scan.l'],
+  output: ['jsonpath_scan.c'],
+  command: [flex_cmd, flex_backup, '-CF', '-p', '-p', '@INPUT@'],
+)
+generated_sources += jsonpath_scan
+
+# jsonpath_scan is compiled as part of jsonpath_gram
+generated_backend_sources += custom_target('jsonpath_parse',
+  input: ['jsonpath_gram.y', jsonpath_scan[0]],
+  output: ['jsonpath_gram.c'],
+  command: [bison_cmd, '@INPUT0@'],
+)
diff --git a/src/backend/utils/cache/meson.build b/src/backend/utils/cache/meson.build
new file mode 100644
index 00000000000..4fe6db6bda6
--- /dev/null
+++ b/src/backend/utils/cache/meson.build
@@ -0,0 +1,16 @@
+backend_sources += files(
+  'attoptcache.c',
+  'catcache.c',
+  'evtcache.c',
+  'inval.c',
+  'lsyscache.c',
+  'partcache.c',
+  'plancache.c',
+  'relcache.c',
+  'relfilenumbermap.c',
+  'relmapper.c',
+  'spccache.c',
+  'syscache.c',
+  'ts_cache.c',
+  'typcache.c',
+)
diff --git a/src/backend/utils/error/meson.build b/src/backend/utils/error/meson.build
new file mode 100644
index 00000000000..325446c8f93
--- /dev/null
+++ b/src/backend/utils/error/meson.build
@@ -0,0 +1,6 @@
+backend_sources += files(
+  'assert.c',
+  'csvlog.c',
+  'elog.c',
+  'jsonlog.c',
+)
diff --git a/src/backend/utils/fmgr/meson.build b/src/backend/utils/fmgr/meson.build
new file mode 100644
index 00000000000..e545b424fd2
--- /dev/null
+++ b/src/backend/utils/fmgr/meson.build
@@ -0,0 +1,8 @@
+backend_sources += files(
+  'dfmgr.c',
+  'fmgr.c',
+  'funcapi.c',
+)
+
+# fmgrtab.c
+generated_backend_sources += fmgrtab_target[2]
diff --git a/src/backend/utils/hash/meson.build b/src/backend/utils/hash/meson.build
new file mode 100644
index 00000000000..242e2f0ecdf
--- /dev/null
+++ b/src/backend/utils/hash/meson.build
@@ -0,0 +1,4 @@
+backend_sources += files(
+  'dynahash.c',
+  'pg_crc.c'
+)
diff --git a/src/backend/utils/init/meson.build b/src/backend/utils/init/meson.build
new file mode 100644
index 00000000000..ec9d72c3df1
--- /dev/null
+++ b/src/backend/utils/init/meson.build
@@ -0,0 +1,4 @@
+backend_sources += files(
+  'globals.c',
+  'miscinit.c',
+  'postinit.c')
diff --git a/src/backend/utils/mb/conversion_procs/meson.build b/src/backend/utils/mb/conversion_procs/meson.build
new file mode 100644
index 00000000000..1bc971d1945
--- /dev/null
+++ b/src/backend/utils/mb/conversion_procs/meson.build
@@ -0,0 +1,36 @@
+encodings = {
+  'cyrillic_and_mic': ['cyrillic_and_mic/cyrillic_and_mic.c'],
+  'euc2004_sjis2004': ['euc2004_sjis2004/euc2004_sjis2004.c'],
+  'euc_cn_and_mic': ['euc_cn_and_mic/euc_cn_and_mic.c'],
+  'euc_jp_and_sjis': ['euc_jp_and_sjis/euc_jp_and_sjis.c'],
+  'euc_kr_and_mic': ['euc_kr_and_mic/euc_kr_and_mic.c'],
+  'euc_tw_and_big5': [
+    'euc_tw_and_big5/euc_tw_and_big5.c',
+    'euc_tw_and_big5/big5.c',
+  ],
+  'latin2_and_win1250': ['latin2_and_win1250/latin2_and_win1250.c'],
+  'latin_and_mic': ['latin_and_mic/latin_and_mic.c'],
+  'utf8_and_big5': ['utf8_and_big5/utf8_and_big5.c'],
+  'utf8_and_cyrillic': ['utf8_and_cyrillic/utf8_and_cyrillic.c'],
+  'utf8_and_euc2004': ['utf8_and_euc2004/utf8_and_euc2004.c'],
+  'utf8_and_euc_cn': ['utf8_and_euc_cn/utf8_and_euc_cn.c'],
+  'utf8_and_euc_jp': ['utf8_and_euc_jp/utf8_and_euc_jp.c'],
+  'utf8_and_euc_kr': ['utf8_and_euc_kr/utf8_and_euc_kr.c'],
+  'utf8_and_euc_tw': ['utf8_and_euc_tw/utf8_and_euc_tw.c'],
+  'utf8_and_gb18030': ['utf8_and_gb18030/utf8_and_gb18030.c'],
+  'utf8_and_gbk': ['utf8_and_gbk/utf8_and_gbk.c'],
+  'utf8_and_iso8859': ['utf8_and_iso8859/utf8_and_iso8859.c'],
+  'utf8_and_iso8859_1': ['utf8_and_iso8859_1/utf8_and_iso8859_1.c'],
+  'utf8_and_johab': ['utf8_and_johab/utf8_and_johab.c'],
+  'utf8_and_sjis': ['utf8_and_sjis/utf8_and_sjis.c'],
+  'utf8_and_sjis2004': ['utf8_and_sjis2004/utf8_and_sjis2004.c'],
+  'utf8_and_uhc': ['utf8_and_uhc/utf8_and_uhc.c'],
+  'utf8_and_win': ['utf8_and_win/utf8_and_win.c'],
+}
+
+foreach encoding, sources : encodings
+  backend_targets += shared_module(encoding,
+    sources,
+    kwargs: pg_mod_args,
+  )
+endforeach
diff --git a/src/backend/utils/mb/meson.build b/src/backend/utils/mb/meson.build
new file mode 100644
index 00000000000..39e45638db0
--- /dev/null
+++ b/src/backend/utils/mb/meson.build
@@ -0,0 +1,9 @@
+backend_sources += files(
+  'conv.c',
+  'mbutils.c',
+  'stringinfo_mb.c',
+  'wstrcmp.c',
+  'wstrncmp.c',
+)
+
+# Note we only enter conversion_procs once the backend build is defined
diff --git a/src/backend/utils/meson.build b/src/backend/utils/meson.build
new file mode 100644
index 00000000000..3a916320bb3
--- /dev/null
+++ b/src/backend/utils/meson.build
@@ -0,0 +1,17 @@
+install_data('errcodes.txt',
+  install_dir: dir_data,
+)
+
+subdir('activity')
+subdir('adt')
+subdir('cache')
+subdir('error')
+subdir('fmgr')
+subdir('hash')
+subdir('init')
+subdir('mb')
+subdir('misc')
+subdir('mmgr')
+subdir('resowner')
+subdir('sort')
+subdir('time')
diff --git a/src/backend/utils/misc/meson.build b/src/backend/utils/misc/meson.build
new file mode 100644
index 00000000000..8fbb128235b
--- /dev/null
+++ b/src/backend/utils/misc/meson.build
@@ -0,0 +1,33 @@
+backend_sources += files(
+  'guc.c',
+  'help_config.c',
+  'pg_config.c',
+  'pg_controldata.c',
+  'pg_rusage.c',
+  'ps_status.c',
+  'queryenvironment.c',
+  'queryjumble.c',
+  'rls.c',
+  'sampling.c',
+  'superuser.c',
+  'timeout.c',
+  'tzparser.c',
+)
+
+# guc-file.c is compiled as part of guc.c, generate guc-file.c.h so it can be
+# added as a dependency for the executable. Not pretty, but there's no
+# obviously better solution right now
+guc_scan = custom_target('guc_scan',
+  input: ['guc-file.l'],
+  output: ['guc-file.c', 'guc-file.c.h'],
+  command: [flex_cmd, '@INPUT@', '--stamp_header', '@OUTPUT1@'])
+
+backend_build_deps += declare_dependency(
+  sources: guc_scan[1],
+  include_directories: include_directories('.'))
+generated_backend_headers += guc_scan[1]
+generated_sources += guc_scan[0]
+
+install_data('postgresql.conf.sample',
+  install_dir: dir_data,
+)
diff --git a/src/backend/utils/mmgr/meson.build b/src/backend/utils/mmgr/meson.build
new file mode 100644
index 00000000000..641bb181ba1
--- /dev/null
+++ b/src/backend/utils/mmgr/meson.build
@@ -0,0 +1,10 @@
+backend_sources += files(
+  'aset.c',
+  'dsa.c',
+  'freepage.c',
+  'generation.c',
+  'mcxt.c',
+  'memdebug.c',
+  'portalmem.c',
+  'slab.c',
+)
diff --git a/src/backend/utils/resowner/meson.build b/src/backend/utils/resowner/meson.build
new file mode 100644
index 00000000000..d30891ca027
--- /dev/null
+++ b/src/backend/utils/resowner/meson.build
@@ -0,0 +1,3 @@
+backend_sources += files(
+  'resowner.c'
+)
diff --git a/src/backend/utils/sort/meson.build b/src/backend/utils/sort/meson.build
new file mode 100644
index 00000000000..1862ceae8c1
--- /dev/null
+++ b/src/backend/utils/sort/meson.build
@@ -0,0 +1,9 @@
+backend_sources += files(
+  'logtape.c',
+  'qsort_interruptible.c',
+  'sharedtuplestore.c',
+  'sortsupport.c',
+  'tuplesort.c',
+  'tuplesortvariants.c',
+  'tuplestore.c',
+)
diff --git a/src/backend/utils/time/meson.build b/src/backend/utils/time/meson.build
new file mode 100644
index 00000000000..6fff8792bb0
--- /dev/null
+++ b/src/backend/utils/time/meson.build
@@ -0,0 +1,4 @@
+backend_sources += files(
+  'combocid.c',
+  'snapmgr.c',
+)
diff --git a/src/fe_utils/meson.build b/src/fe_utils/meson.build
new file mode 100644
index 00000000000..29c24257328
--- /dev/null
+++ b/src/fe_utils/meson.build
@@ -0,0 +1,29 @@
+fe_utils_sources = files(
+  'archive.c',
+  'cancel.c',
+  'conditional.c',
+  'connect_utils.c',
+  'mbprint.c',
+  'option_utils.c',
+  'parallel_slot.c',
+  'print.c',
+  'query_utils.c',
+  'recovery_gen.c',
+  'simple_list.c',
+  'string_utils.c',
+)
+
+psqlscan = custom_target('psqlscan',
+  input: ['psqlscan.l'],
+  output: ['psqlscan.c'],
+  command: [flex_cmd, flex_backup, flex_fix_warning, '-Cfe', '-p', '-p', '@INPUT@'],
+)
+generated_sources += psqlscan
+fe_utils_sources += psqlscan
+
+fe_utils = static_library('libpgfeutils',
+  fe_utils_sources + generated_headers,
+  include_directories: [postgres_inc, libpq_inc],
+  dependencies: frontend_common_code,
+  kwargs: default_lib_args,
+)
diff --git a/src/bin/initdb/meson.build b/src/bin/initdb/meson.build
new file mode 100644
index 00000000000..72c255dbcfc
--- /dev/null
+++ b/src/bin/initdb/meson.build
@@ -0,0 +1,39 @@
+initdb_sources = files(
+  'findtimezone.c',
+  'initdb.c'
+)
+
+initdb_sources += timezone_localtime_source
+
+#fixme: reimplement libpq_pgport logic
+
+if host_system == 'windows'
+  initdb_sources += windows.compile_resources(
+    custom_target('win32ver.rc', kwargs: rcgen_kw,
+      command: rcgen_bin_cmd + [
+        '--FILEDESC', 'initdb - initialize a new database cluster',
+        '--NAME', 'initdb',]),
+    kwargs: rccompile_kw,
+  )
+endif
+
+executable('initdb',
+  initdb_sources,
+  include_directories: [timezone_inc],
+  dependencies: [frontend_code, libpq, icu, icu_i18n],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'initdb',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'env': {'with_icu': icu.found() ? 'yes' : 'no'},
+    'tests': [
+      't/001_initdb.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/initdb/po/meson.build b/src/bin/initdb/po/meson.build
new file mode 100644
index 00000000000..8b8a9fd2ce1
--- /dev/null
+++ b/src/bin/initdb/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('initdb-' + pg_version_major.to_string())
diff --git a/src/bin/meson.build b/src/bin/meson.build
new file mode 100644
index 00000000000..5fd5a9d2f98
--- /dev/null
+++ b/src/bin/meson.build
@@ -0,0 +1,20 @@
+subdir('initdb')
+subdir('pg_amcheck')
+subdir('pg_archivecleanup')
+subdir('pg_basebackup')
+subdir('pg_checksums')
+subdir('pg_config')
+subdir('pg_controldata')
+subdir('pg_ctl')
+subdir('pg_dump')
+subdir('pg_resetwal')
+subdir('pg_rewind')
+subdir('pg_test_fsync')
+subdir('pg_test_timing')
+subdir('pg_upgrade')
+subdir('pg_verifybackup')
+subdir('pg_waldump')
+subdir('pgbench')
+subdir('pgevent')
+subdir('psql')
+subdir('scripts')
diff --git a/src/bin/pg_amcheck/meson.build b/src/bin/pg_amcheck/meson.build
new file mode 100644
index 00000000000..3d130097615
--- /dev/null
+++ b/src/bin/pg_amcheck/meson.build
@@ -0,0 +1,26 @@
+pg_amcheck_sources = files(
+  'pg_amcheck.c'
+)
+
+pg_amcheck = executable('pg_amcheck',
+  pg_amcheck_sources,
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_amcheck',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_nonesuch.pl',
+      't/003_check.pl',
+      't/004_verify_heapam.pl',
+      't/005_opclass_damage.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_amcheck/po/meson.build b/src/bin/pg_amcheck/po/meson.build
new file mode 100644
index 00000000000..b255f552c94
--- /dev/null
+++ b/src/bin/pg_amcheck/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_amcheck-' + pg_version_major.to_string())
diff --git a/src/bin/pg_archivecleanup/meson.build b/src/bin/pg_archivecleanup/meson.build
new file mode 100644
index 00000000000..b5d393b3b32
--- /dev/null
+++ b/src/bin/pg_archivecleanup/meson.build
@@ -0,0 +1,18 @@
+pg_archivecleanup = executable('pg_archivecleanup',
+  ['pg_archivecleanup.c'],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_archivecleanup',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/010_pg_archivecleanup.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_archivecleanup/po/meson.build b/src/bin/pg_archivecleanup/po/meson.build
new file mode 100644
index 00000000000..37935fcabc4
--- /dev/null
+++ b/src/bin/pg_archivecleanup/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_archivecleanup-' + pg_version_major.to_string())
diff --git a/src/bin/pg_basebackup/meson.build b/src/bin/pg_basebackup/meson.build
new file mode 100644
index 00000000000..7819275715e
--- /dev/null
+++ b/src/bin/pg_basebackup/meson.build
@@ -0,0 +1,58 @@
+common_sources = files(
+  'bbstreamer_file.c',
+  'bbstreamer_gzip.c',
+  'bbstreamer_inject.c',
+  'bbstreamer_lz4.c',
+  'bbstreamer_tar.c',
+  'bbstreamer_zstd.c',
+  'receivelog.c',
+  'streamutil.c',
+  'walmethods.c',
+)
+
+pg_basebackup_deps = [frontend_code, libpq, lz4, zlib, zstd]
+pg_basebackup_common = static_library('libpg_basebackup_common',
+  common_sources,
+  dependencies: pg_basebackup_deps,
+  kwargs: internal_lib_args,
+)
+
+executable('pg_basebackup',
+  'pg_basebackup.c',
+  link_with: [pg_basebackup_common],
+  dependencies: pg_basebackup_deps,
+  kwargs: default_bin_args,
+)
+
+executable('pg_receivewal',
+  'pg_receivewal.c',
+  link_with: [pg_basebackup_common],
+  dependencies: pg_basebackup_deps,
+  kwargs: default_bin_args,
+)
+
+executable('pg_recvlogical',
+  'pg_recvlogical.c',
+  link_with: [pg_basebackup_common],
+  dependencies: pg_basebackup_deps,
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_basebackup',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'env': {'GZIP_PROGRAM': gzip.path(),
+            'TAR': tar.path(),
+            'LZ4': program_lz4.found() ? program_lz4.path() : '',
+            'ZSTD': program_zstd.found() ? program_zstd.path() : ''},
+    'tests': [
+      't/010_pg_basebackup.pl',
+      't/020_pg_receivewal.pl',
+      't/030_pg_recvlogical.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_basebackup/po/meson.build b/src/bin/pg_basebackup/po/meson.build
new file mode 100644
index 00000000000..cab021153fe
--- /dev/null
+++ b/src/bin/pg_basebackup/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_basebackup-' + pg_version_major.to_string())
diff --git a/src/bin/pg_checksums/meson.build b/src/bin/pg_checksums/meson.build
new file mode 100644
index 00000000000..c58bcca2f97
--- /dev/null
+++ b/src/bin/pg_checksums/meson.build
@@ -0,0 +1,20 @@
+executable('pg_checksums',
+  ['pg_checksums.c'],
+  include_directories: [timezone_inc],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_checksums',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_actions.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_checksums/po/meson.build b/src/bin/pg_checksums/po/meson.build
new file mode 100644
index 00000000000..2c47c2338f6
--- /dev/null
+++ b/src/bin/pg_checksums/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_checksums-' + pg_version_major.to_string())
diff --git a/src/bin/pg_config/meson.build b/src/bin/pg_config/meson.build
new file mode 100644
index 00000000000..90664bb3bc3
--- /dev/null
+++ b/src/bin/pg_config/meson.build
@@ -0,0 +1,18 @@
+executable('pg_config',
+  ['pg_config.c'],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_config',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_pg_config.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_config/po/meson.build b/src/bin/pg_config/po/meson.build
new file mode 100644
index 00000000000..b6fb6db9213
--- /dev/null
+++ b/src/bin/pg_config/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_config-' + pg_version_major.to_string())
diff --git a/src/bin/pg_controldata/meson.build b/src/bin/pg_controldata/meson.build
new file mode 100644
index 00000000000..969eed2888e
--- /dev/null
+++ b/src/bin/pg_controldata/meson.build
@@ -0,0 +1,18 @@
+executable('pg_controldata',
+  ['pg_controldata.c'],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_controldata',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_pg_controldata.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_controldata/po/meson.build b/src/bin/pg_controldata/po/meson.build
new file mode 100644
index 00000000000..31b486d002c
--- /dev/null
+++ b/src/bin/pg_controldata/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_controldata-' + pg_version_major.to_string())
diff --git a/src/bin/pg_ctl/meson.build b/src/bin/pg_ctl/meson.build
new file mode 100644
index 00000000000..bbb30198d96
--- /dev/null
+++ b/src/bin/pg_ctl/meson.build
@@ -0,0 +1,21 @@
+executable('pg_ctl',
+  ['pg_ctl.c'],
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_ctl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_start_stop.pl',
+      't/002_status.pl',
+      't/003_promote.pl',
+      't/004_logrotate.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_ctl/po/meson.build b/src/bin/pg_ctl/po/meson.build
new file mode 100644
index 00000000000..947b5108423
--- /dev/null
+++ b/src/bin/pg_ctl/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_ctl-' + pg_version_major.to_string())
diff --git a/src/bin/pg_dump/meson.build b/src/bin/pg_dump/meson.build
new file mode 100644
index 00000000000..ee8daa7d06a
--- /dev/null
+++ b/src/bin/pg_dump/meson.build
@@ -0,0 +1,83 @@
+pg_dump_common_sources = files(
+  'compress_io.c',
+  'dumputils.c',
+  'parallel.c',
+  'pg_backup_archiver.c',
+  'pg_backup_custom.c',
+  'pg_backup_db.c',
+  'pg_backup_directory.c',
+  'pg_backup_null.c',
+  'pg_backup_tar.c',
+  'pg_backup_utils.c',
+)
+
+if host_system == 'windows'
+  pg_dump_common_sources += windows.compile_resources(
+    custom_target('win32ver.rc', kwargs: rcgen_kw,
+      command: rcgen_bin_cmd + [
+        '--FILEDESC', 'pg_dump/pg_restore/pg_dumpall - backup and restore PostgreSQL databases',
+        '--NAME', 'pg_dump',]),
+    kwargs: rccompile_kw,
+  )
+endif
+
+pg_dump_common = static_library('libpgdump_common',
+  pg_dump_common_sources,
+  dependencies: [frontend_code, libpq, zlib],
+  kwargs: internal_lib_args,
+)
+
+
+pg_dump_sources = files(
+  'common.c',
+  'pg_dump.c',
+  'pg_dump_sort.c',
+)
+
+executable('pg_dump',
+  pg_dump_sources,
+  link_with: [pg_dump_common],
+  dependencies: [frontend_code, libpq, zlib],
+  kwargs: default_bin_args,
+)
+
+
+pg_dumpall_sources = files(
+  'pg_dumpall.c',
+)
+
+executable('pg_dumpall',
+  pg_dumpall_sources,
+  link_with: [pg_dump_common],
+  dependencies: [frontend_code, libpq, zlib],
+  kwargs: default_bin_args,
+)
+
+
+pg_restore_sources = files(
+  'pg_restore.c',
+)
+
+executable('pg_restore',
+  pg_restore_sources,
+  link_with: [pg_dump_common],
+  dependencies: [frontend_code, libpq, zlib],
+  kwargs: default_bin_args,
+)
+
+
+tests += {
+  'name': 'pg_dump',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_pg_dump.pl',
+      't/003_pg_dump_with_server.pl',
+      't/010_dump_connstr.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_dump/po/meson.build b/src/bin/pg_dump/po/meson.build
new file mode 100644
index 00000000000..82e5e537ff4
--- /dev/null
+++ b/src/bin/pg_dump/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_dump-' + pg_version_major.to_string())
diff --git a/src/bin/pg_resetwal/meson.build b/src/bin/pg_resetwal/meson.build
new file mode 100644
index 00000000000..dd889188b6d
--- /dev/null
+++ b/src/bin/pg_resetwal/meson.build
@@ -0,0 +1,19 @@
+executable('pg_resetwal',
+  files('pg_resetwal.c'),
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_resetwal',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_corrupted.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_resetwal/po/meson.build b/src/bin/pg_resetwal/po/meson.build
new file mode 100644
index 00000000000..d130d3b775f
--- /dev/null
+++ b/src/bin/pg_resetwal/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_resetwal-' + pg_version_major.to_string())
diff --git a/src/bin/pg_rewind/meson.build b/src/bin/pg_rewind/meson.build
new file mode 100644
index 00000000000..f31b582546b
--- /dev/null
+++ b/src/bin/pg_rewind/meson.build
@@ -0,0 +1,41 @@
+pg_rewind_sources = files(
+  'datapagemap.c',
+  'file_ops.c',
+  'filemap.c',
+  'libpq_source.c',
+  'local_source.c',
+  'parsexlog.c',
+  'pg_rewind.c',
+  'timeline.c',
+)
+
+pg_rewind_sources += xlogreader_sources
+
+pg_rewind = executable('pg_rewind',
+  pg_rewind_sources,
+  dependencies: [frontend_code, libpq, lz4, zstd],
+  c_args: ['-DFRONTEND'], # needed for xlogreader et al
+  kwargs: default_bin_args,
+)
+
+
+tests += {
+  'name': 'pg_rewind',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_databases.pl',
+      't/003_extrafiles.pl',
+      't/004_pg_xlog_symlink.pl',
+      't/005_same_timeline.pl',
+      't/006_options.pl',
+      't/007_standby_source.pl',
+      't/008_min_recovery_point.pl',
+      't/009_growing_files.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_rewind/po/meson.build b/src/bin/pg_rewind/po/meson.build
new file mode 100644
index 00000000000..a105600b348
--- /dev/null
+++ b/src/bin/pg_rewind/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_rewind-' + pg_version_major.to_string())
diff --git a/src/bin/pg_test_fsync/meson.build b/src/bin/pg_test_fsync/meson.build
new file mode 100644
index 00000000000..b2229e9453e
--- /dev/null
+++ b/src/bin/pg_test_fsync/meson.build
@@ -0,0 +1,18 @@
+executable('pg_test_fsync',
+  ['pg_test_fsync.c'],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_test_fsync',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_test_fsync/po/meson.build b/src/bin/pg_test_fsync/po/meson.build
new file mode 100644
index 00000000000..2ee1125282d
--- /dev/null
+++ b/src/bin/pg_test_fsync/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_test_fsync-' + pg_version_major.to_string())
diff --git a/src/bin/pg_test_timing/meson.build b/src/bin/pg_test_timing/meson.build
new file mode 100644
index 00000000000..409fe242353
--- /dev/null
+++ b/src/bin/pg_test_timing/meson.build
@@ -0,0 +1,18 @@
+pg_test_timing = executable('pg_test_timing',
+  ['pg_test_timing.c'],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_test_timing',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_test_timing/po/meson.build b/src/bin/pg_test_timing/po/meson.build
new file mode 100644
index 00000000000..cda8615165b
--- /dev/null
+++ b/src/bin/pg_test_timing/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_test_timing-' + pg_version_major.to_string())
diff --git a/src/bin/pg_upgrade/meson.build b/src/bin/pg_upgrade/meson.build
new file mode 100644
index 00000000000..52324601181
--- /dev/null
+++ b/src/bin/pg_upgrade/meson.build
@@ -0,0 +1,39 @@
+pg_upgrade_sources = files(
+  'check.c',
+  'controldata.c',
+  'dump.c',
+  'exec.c',
+  'file.c',
+  'function.c',
+  'info.c',
+  'option.c',
+  'parallel.c',
+  'pg_upgrade.c',
+  'relfilenumber.c',
+  'server.c',
+  'tablespace.c',
+  'util.c',
+  'version.c',
+)
+
+pg_upgrade = executable('pg_upgrade',
+  pg_upgrade_sources,
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+
+tests += {
+  'name': 'pg_upgrade',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_pg_upgrade.pl',
+    ],
+    'test_kwargs': {'priority': 40}, # pg_upgrade tests are slow
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_upgrade/po/meson.build b/src/bin/pg_upgrade/po/meson.build
new file mode 100644
index 00000000000..39301cbede8
--- /dev/null
+++ b/src/bin/pg_upgrade/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_upgrade-' + pg_version_major.to_string())
diff --git a/src/bin/pg_verifybackup/meson.build b/src/bin/pg_verifybackup/meson.build
new file mode 100644
index 00000000000..307ca23ee73
--- /dev/null
+++ b/src/bin/pg_verifybackup/meson.build
@@ -0,0 +1,32 @@
+pg_verifybackup_sources = files(
+  'parse_manifest.c',
+  'pg_verifybackup.c'
+)
+
+pg_verifybackup = executable('pg_verifybackup',
+  pg_verifybackup_sources,
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_verifybackup',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_algorithm.pl',
+      't/003_corruption.pl',
+      't/004_options.pl',
+      't/005_bad_manifest.pl',
+      't/006_encoding.pl',
+      't/007_wal.pl',
+      't/008_untar.pl',
+      't/009_extract.pl',
+      't/010_client_untar.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_verifybackup/po/meson.build b/src/bin/pg_verifybackup/po/meson.build
new file mode 100644
index 00000000000..b583f1958ba
--- /dev/null
+++ b/src/bin/pg_verifybackup/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_verifybackup-' + pg_version_major.to_string())
diff --git a/src/bin/pg_waldump/meson.build b/src/bin/pg_waldump/meson.build
new file mode 100644
index 00000000000..1fe981b861d
--- /dev/null
+++ b/src/bin/pg_waldump/meson.build
@@ -0,0 +1,29 @@
+pg_waldump_sources = files(
+  'compat.c',
+  'pg_waldump.c',
+  'rmgrdesc.c',
+)
+
+pg_waldump_sources += rmgr_desc_sources
+pg_waldump_sources += xlogreader_sources
+pg_waldump_sources += files('../../backend/access/transam/xlogstats.c')
+
+pg_waldump = executable('pg_waldump',
+  pg_waldump_sources,
+  dependencies: [frontend_code, lz4, zstd],
+  c_args: ['-DFRONTEND'], # needed for xlogreader et al
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_waldump',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_waldump/po/meson.build b/src/bin/pg_waldump/po/meson.build
new file mode 100644
index 00000000000..f335aa4b360
--- /dev/null
+++ b/src/bin/pg_waldump/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_waldump-' + pg_version_major.to_string())
diff --git a/src/bin/pgbench/meson.build b/src/bin/pgbench/meson.build
new file mode 100644
index 00000000000..2613ceb4139
--- /dev/null
+++ b/src/bin/pgbench/meson.build
@@ -0,0 +1,42 @@
+pgbench_sources = files(
+  'pgbench.c',
+)
+
+# exprscan is compiled as part ofexprparse. The ordering is enforced by making
+# the generation of grammar depend on the scanner generation. That's
+# unnecessarily strict, but overall harmless.
+
+exprscan = custom_target('exprscan',
+  input: files('exprscan.l'),
+  output: ['exprscan.c'],
+  command: [flex_cmd, '@INPUT@'],
+)
+generated_sources += exprscan
+
+exprparse = custom_target('exprparse',
+  input: 'exprparse.y',
+  output: 'exprparse.c',
+  depends: exprscan,
+  command: [bison_cmd, '@INPUT@'],)
+generated_sources += exprparse
+pgbench_sources += exprparse
+
+executable('pgbench',
+  pgbench_sources,
+  dependencies: [frontend_code, libpq, thread_dep],
+  include_directories: include_directories('.'),
+  kwargs: default_bin_args,
+)
+
+
+tests += {
+  'name': 'pgbench',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_pgbench_with_server.pl',
+      't/002_pgbench_no_server.pl',
+    ],
+  },
+}
diff --git a/src/bin/pgevent/meson.build b/src/bin/pgevent/meson.build
new file mode 100644
index 00000000000..30995eb0484
--- /dev/null
+++ b/src/bin/pgevent/meson.build
@@ -0,0 +1,38 @@
+if host_system != 'windows'
+  subdir_done()
+endif
+
+pgevent_sources = files(
+  'pgevent.c',
+)
+
+# built as part of pgmsgevent.rc, via #include
+win32ver_rc = custom_target(
+  'win32ver.rc',
+  kwargs: rcgen_kw,
+  command: rcgen_lib_cmd + [
+    '--FILEDESC', 'Eventlog message formatter',
+    '--NAME', 'pgevent',],
+)
+
+pgevent_sources += windows.compile_resources(
+  'pgmsgevent.rc',
+  depends: win32ver_rc, # included in file
+  kwargs: rccompile_kw,
+)
+
+# FIXME: copied from Mkvcbuild.pm, but I don't think that's the right approach
+pgevent_link_args = []
+if cc.get_id() == 'msvc'
+  pgevent_link_args += '/ignore:4104'
+endif
+
+shared_library('pgevent',
+  pgevent_sources,
+  dependencies: [frontend_code],
+  link_args: pgevent_link_args,
+  vs_module_defs: 'pgevent.def',
+  kwargs: default_lib_args + {
+    'name_prefix': '',
+  },
+)
diff --git a/src/bin/psql/meson.build b/src/bin/psql/meson.build
new file mode 100644
index 00000000000..626ac8cd105
--- /dev/null
+++ b/src/bin/psql/meson.build
@@ -0,0 +1,74 @@
+psql_sources = files(
+  'command.c',
+  'common.c',
+  'copy.c',
+  'crosstabview.c',
+  'describe.c',
+  'help.c',
+  'input.c',
+  'large_obj.c',
+  'mainloop.c',
+  'prompt.c',
+  'startup.c',
+  'stringutils.c',
+  'tab-complete.c',
+  'variables.c',
+)
+
+psqlscanslash = custom_target('psqlscanslash',
+  input: ['psqlscanslash.l'],
+  output: ['psqlscanslash.c'],
+  command: [flex_cmd, flex_backup, flex_fix_warning, '-Cfe', '-p', '-p', '@INPUT@'])
+generated_sources += psqlscanslash
+psql_sources += psqlscanslash
+
+sql_help = custom_target('psql_help',
+  output: ['sql_help.c', 'sql_help.h'],
+  depfile: 'sql_help.dep',
+  command: [
+    perl, files('create_help.pl'),
+    '--docdir', '@SOURCE_ROOT@/doc/src/sgml/ref',
+    '--depfile', '@DEPFILE@',
+    '--outdir', '@OUTDIR@',
+    '--basename', 'sql_help',
+  ],
+)
+generated_sources += sql_help.to_list()
+psql_sources += sql_help
+
+if host_system == 'windows'
+  psql_sources += windows.compile_resources(
+    custom_target('win32ver.rc', kwargs: rcgen_kw,
+      command: rcgen_bin_cmd + [
+        '--FILEDESC', 'psql - the PostgreSQL interactive terminal',
+        '--NAME', 'psql',]),
+    kwargs: rccompile_kw,
+  )
+endif
+
+executable('psql',
+  psql_sources,
+  include_directories: include_directories('.'),
+  dependencies: [frontend_code, libpq, readline],
+  kwargs: default_bin_args,
+)
+
+install_data('psqlrc.sample',
+  install_dir: dir_data,
+)
+
+tests += {
+  'name': 'psql',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'env': {'with_readline': readline.found() ? 'yes' : 'no'},
+    'tests': [
+      't/001_basic.pl',
+      't/010_tab_completion.pl',
+      't/020_cancel.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/psql/po/meson.build b/src/bin/psql/po/meson.build
new file mode 100644
index 00000000000..45fe425298d
--- /dev/null
+++ b/src/bin/psql/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('psql-' + pg_version_major.to_string())
diff --git a/src/bin/scripts/meson.build b/src/bin/scripts/meson.build
new file mode 100644
index 00000000000..d6826817f3d
--- /dev/null
+++ b/src/bin/scripts/meson.build
@@ -0,0 +1,50 @@
+scripts_common = static_library('libscripts_common',
+  files('common.c'),
+  dependencies: [frontend_code, libpq],
+  kwargs: internal_lib_args,
+)
+
+binaries = [
+  'createdb',
+  'dropdb',
+  'createuser',
+  'dropuser',
+  'clusterdb',
+  'vacuumdb',
+  'reindexdb',
+  'pg_isready',
+]
+
+foreach binary : binaries
+  executable(binary,
+    files(binary + '.c'),
+    link_with: [scripts_common],
+    dependencies: [frontend_code, libpq],
+    kwargs: default_bin_args,
+  )
+endforeach
+
+tests += {
+  'name': 'scripts',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/010_clusterdb.pl',
+      't/011_clusterdb_all.pl',
+      't/020_createdb.pl',
+      't/040_createuser.pl',
+      't/050_dropdb.pl',
+      't/070_dropuser.pl',
+      't/080_pg_isready.pl',
+      't/090_reindexdb.pl',
+      't/091_reindexdb_all.pl',
+      't/100_vacuumdb.pl',
+      't/101_vacuumdb_all.pl',
+      't/102_vacuumdb_stages.pl',
+      't/200_connstr.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/scripts/po/meson.build b/src/bin/scripts/po/meson.build
new file mode 100644
index 00000000000..3c531459c2d
--- /dev/null
+++ b/src/bin/scripts/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pgscripts-' + pg_version_major.to_string())
diff --git a/src/interfaces/libpq/meson.build b/src/interfaces/libpq/meson.build
new file mode 100644
index 00000000000..3d44030e72b
--- /dev/null
+++ b/src/interfaces/libpq/meson.build
@@ -0,0 +1,104 @@
+# test/ is entered via top-level meson.build, that way it can use the default
+# args for executables (which depend on libpq).
+
+libpq_sources = files(
+  'fe-auth-scram.c',
+  'fe-auth.c',
+  'fe-connect.c',
+  'fe-exec.c',
+  'fe-lobj.c',
+  'fe-misc.c',
+  'fe-print.c',
+  'fe-protocol3.c',
+  'fe-secure.c',
+  'fe-trace.c',
+  'legacy-pqsignal.c',
+  'libpq-events.c',
+  'pqexpbuffer.c',
+)
+
+if host_system == 'windows'
+  libpq_sources += files('pthread-win32.c', 'win32.c')
+endif
+
+if ssl.found()
+  libpq_sources += files('fe-secure-common.c')
+  libpq_sources += files('fe-secure-openssl.c')
+endif
+
+if gssapi.found()
+  libpq_sources += files(
+    'fe-gssapi-common.c',
+    'fe-secure-gssapi.c',
+  )
+endif
+
+export_file = custom_target('libpq.exports',
+  kwargs: gen_export_kwargs,
+)
+
+# port needs to be in include path due to pthread-win32.h
+libpq_inc = include_directories('.', '../../port')
+libpq_link_depends = []
+
+if host_system == 'windows'
+  libpq_deps += cc.find_library('secur32', required: true)
+endif
+
+libpq_both = both_libraries('libpq',
+  libpq_sources,
+  include_directories: [libpq_inc, postgres_inc],
+  c_args: ['-DSO_MAJOR_VERSION=5'],
+  dependencies: libpq_deps,
+  version: '5.' + pg_version_major.to_string(),
+  soversion: host_system != 'windows' ? '5' : '',
+  darwin_versions: ['5', '5.' + pg_version_major.to_string()],
+  link_depends: export_file,
+  link_args: export_fmt.format(export_file.full_path()),
+  kwargs: default_lib_args,
+)
+
+libpq_so = libpq_both.get_shared_lib()
+
+libpq = declare_dependency(
+  link_with: [libpq_so],
+  include_directories: [include_directories('.')]
+)
+
+pkgconfig.generate(
+  libpq_so,
+  name: 'libpq',
+  description: 'PostgreSQL libpq library',
+  url: pg_url,
+)
+
+install_headers(
+  'libpq-fe.h',
+  'libpq-events.h',
+)
+
+install_headers(
+  'libpq-int.h',
+  'pqexpbuffer.h',
+  'fe-auth-sasl.h',
+  install_dir: dir_include_internal,
+)
+install_data('pg_service.conf.sample',
+  install_dir: dir_data,
+)
+
+
+tests += {
+  'name': 'libpq',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_uri.pl',
+      't/002_api.pl',
+    ],
+    'env': {'with_ssl': get_option('ssl')},
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/interfaces/libpq/po/meson.build b/src/interfaces/libpq/po/meson.build
new file mode 100644
index 00000000000..eed91110fd6
--- /dev/null
+++ b/src/interfaces/libpq/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('libpq' + '5' + '-' + pg_version_major.to_string())
diff --git a/src/interfaces/libpq/test/meson.build b/src/interfaces/libpq/test/meson.build
new file mode 100644
index 00000000000..16f94c1ed8b
--- /dev/null
+++ b/src/interfaces/libpq/test/meson.build
@@ -0,0 +1,15 @@
+executable('libpq_uri_regress',
+  files('libpq_uri_regress.c'),
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args + {
+    'install': false,
+  }
+)
+
+executable('libpq_testclient',
+  files('libpq_testclient.c'),
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args + {
+    'install': false,
+  }
+)
diff --git a/src/pl/meson.build b/src/pl/meson.build
new file mode 100644
index 00000000000..d9a57465441
--- /dev/null
+++ b/src/pl/meson.build
@@ -0,0 +1,5 @@
+subdir('plpgsql')
+
+subdir('plperl')
+subdir('plpython')
+subdir('tcl')
diff --git a/src/pl/plperl/meson.build b/src/pl/plperl/meson.build
new file mode 100644
index 00000000000..6831011edac
--- /dev/null
+++ b/src/pl/plperl/meson.build
@@ -0,0 +1,92 @@
+if not perl_dep.found()
+  subdir_done()
+endif
+
+plperl_sources = files(
+  'plperl.c',
+)
+
+subppdir = run_command(perl, '-e', 'use List::Util qw(first); print first { -r "$_/ExtUtils/xsubpp" } @INC',
+  check: true).stdout()
+xsubpp = '@0@/ExtUtils/xsubpp'.format(subppdir)
+typemap = '@0@/ExtUtils/typemap'.format(privlibexp)
+
+plperl_sources += custom_target('perlchunks.h',
+  input: files('plc_perlboot.pl', 'plc_trusted.pl'),
+  output: 'perlchunks.h',
+  capture: true,
+  command: [perl, files('text2macro.pl'), '--strip=^(\#.*|\s*)$', '@INPUT@']
+)
+
+plperl_sources += custom_target('plperl_opmask.h',
+  input: files('plperl_opmask.pl'),
+  output: 'plperl_opmask.h',
+  command: [perl, '@INPUT@', '@OUTPUT@']
+)
+
+foreach n : ['SPI', 'Util']
+  xs = files(n + '.xs')
+  xs_c_name = n + '.c'
+
+  # FIXME: -output option is only available in perl 5.9.3 - but that's
+  # probably a fine minimum requirement?
+  xs_c = custom_target(xs_c_name,
+    input: xs,
+    output: xs_c_name,
+    command: [perl, xsubpp, '-typemap', typemap, '-output', '@OUTPUT@', '@INPUT@']
+  )
+  plperl_sources += xs_c
+endforeach
+
+plperl_inc = include_directories('.')
+shared_module('plperl',
+  plperl_sources,
+  include_directories: [plperl_inc, postgres_inc],
+  kwargs: pg_mod_args + {
+    'dependencies': [perl_dep, pg_mod_args['dependencies']],
+    'install_rpath': ':'.join(mod_install_rpaths + ['@0@/CORE'.format(archlibexp)]),
+    'build_rpath': '@0@/CORE'.format(archlibexp),
+  },
+)
+
+install_data(
+  'plperl.control',
+  'plperl--1.0.sql',
+  install_dir: dir_data_extension,
+)
+
+install_data(
+  'plperlu.control',
+  'plperlu--1.0.sql',
+  install_dir: dir_data_extension,
+)
+
+install_headers(
+  'plperl.h',
+  'ppport.h',
+  install_dir: dir_include_server,
+)
+
+tests += {
+  'name': 'plperl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'plperl_setup',
+      'plperl',
+      'plperl_lc',
+      'plperl_trigger',
+      'plperl_shared',
+      'plperl_elog',
+      'plperl_util',
+      'plperl_init',
+      'plperlu',
+      'plperl_array',
+      'plperl_call',
+      'plperl_transaction',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/pl/plperl/po/meson.build b/src/pl/plperl/po/meson.build
new file mode 100644
index 00000000000..fe0a715bdf0
--- /dev/null
+++ b/src/pl/plperl/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('plperl-' + pg_version_major.to_string())
diff --git a/src/pl/plpgsql/meson.build b/src/pl/plpgsql/meson.build
new file mode 100644
index 00000000000..9537275d67c
--- /dev/null
+++ b/src/pl/plpgsql/meson.build
@@ -0,0 +1 @@
+subdir('src')
diff --git a/src/pl/plpgsql/src/meson.build b/src/pl/plpgsql/src/meson.build
new file mode 100644
index 00000000000..c4c94a312e1
--- /dev/null
+++ b/src/pl/plpgsql/src/meson.build
@@ -0,0 +1,83 @@
+plpgsql_sources = files(
+  'pl_comp.c',
+  'pl_exec.c',
+  'pl_funcs.c',
+  'pl_handler.c',
+  'pl_scanner.c',
+)
+
+pl_gram = custom_target('gram',
+  input: ['pl_gram.y'],
+  output: ['pl_gram.c', 'pl_gram.h'],
+  command: [bison_cmd, '-d', '@INPUT@'])
+generated_sources += pl_gram.to_list()
+plpgsql_sources += pl_gram
+
+gen_plerrcodes = files('generate-plerrcodes.pl')
+pl_errcodes = custom_target('plerrcodes',
+  input: ['../../../../src/backend/utils/errcodes.txt'],
+  output: ['plerrcodes.h'],
+  command: [perl, gen_plerrcodes, '@INPUT0@'],
+  capture: true,
+)
+generated_sources += pl_errcodes
+plpgsql_sources += pl_errcodes
+
+gen_keywordlist = files('../../../../src/tools/gen_keywordlist.pl')
+pl_reserved = custom_target('pl_reserved_kwlist',
+  input: ['pl_reserved_kwlist.h'],
+  output: ['pl_reserved_kwlist_d.h'],
+  command: [perl, '-I', '@SOURCE_ROOT@/src/tools', gen_keywordlist, '--output', '@OUTDIR@', '--varname', 'ReservedPLKeywords', '@INPUT@']
+)
+generated_sources += pl_reserved
+plpgsql_sources += pl_reserved
+
+pl_unreserved = custom_target('pl_unreserved_kwlist',
+  input: ['pl_unreserved_kwlist.h'],
+  output: ['pl_unreserved_kwlist_d.h'],
+  command: [perl, '-I', '@SOURCE_ROOT@/src/tools', gen_keywordlist, '--output', '@OUTDIR@', '--varname', 'UnreservedPLKeywords', '@INPUT@']
+)
+generated_sources += pl_unreserved
+plpgsql_sources += pl_unreserved
+
+shared_module('plpgsql',
+  plpgsql_sources,
+  include_directories: include_directories('.'),
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'plpgsql.control',
+  'plpgsql--1.0.sql',
+  install_dir: dir_data_extension,
+)
+
+install_headers(
+  'plpgsql.h',
+  install_dir: dir_include_server
+)
+
+
+tests += {
+  'name': 'plpgsql',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'plpgsql_array',
+      'plpgsql_call',
+      'plpgsql_control',
+      'plpgsql_copy',
+      'plpgsql_domain',
+      'plpgsql_record',
+      'plpgsql_cache',
+      'plpgsql_simple',
+      'plpgsql_transaction',
+      'plpgsql_trap',
+      'plpgsql_trigger',
+      'plpgsql_varprops',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/pl/plpgsql/src/po/meson.build b/src/pl/plpgsql/src/po/meson.build
new file mode 100644
index 00000000000..29e0b74488f
--- /dev/null
+++ b/src/pl/plpgsql/src/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('plpgsql-' + pg_version_major.to_string())
diff --git a/src/pl/plpython/meson.build b/src/pl/plpython/meson.build
new file mode 100644
index 00000000000..e9e77ae3691
--- /dev/null
+++ b/src/pl/plpython/meson.build
@@ -0,0 +1,98 @@
+if not python3_dep.found()
+  subdir_done()
+endif
+
+plpython_sources = files(
+  'plpy_cursorobject.c',
+  'plpy_elog.c',
+  'plpy_exec.c',
+  'plpy_main.c',
+  'plpy_planobject.c',
+  'plpy_plpymodule.c',
+  'plpy_procedure.c',
+  'plpy_resultobject.c',
+  'plpy_spi.c',
+  'plpy_subxactobject.c',
+  'plpy_typeio.c',
+  'plpy_util.c',
+)
+
+plpython_sources += custom_target('spiexceptions.h',
+  input: files('../../backend/utils/errcodes.txt'),
+  output: 'spiexceptions.h',
+  command: [perl, files('generate-spiexceptions.pl'), '@INPUT@'],
+  capture: true,
+)
+
+
+# FIXME: need to duplicate import library ugliness?
+plpython_inc = include_directories('.')
+
+shared_module('plpython3',
+  plpython_sources,
+  include_directories: [plpython_inc, postgres_inc],
+  kwargs: pg_mod_args + {
+    'dependencies': [python3_dep, pg_mod_args['dependencies']],
+  },
+)
+
+# FIXME: Only install the relevant versions
+install_data(
+  'plpython3u.control',
+  'plpython3u--1.0.sql',
+  install_dir: dir_data_extension,
+)
+
+install_headers(
+  'plpy_cursorobject.h',
+  'plpy_elog.h',
+  'plpy_exec.h',
+  'plpy_main.h',
+  'plpy_planobject.h',
+  'plpy_plpymodule.h',
+  'plpy_procedure.h',
+  'plpy_resultobject.h',
+  'plpy_spi.h',
+  'plpy_subxactobject.h',
+  'plpy_typeio.h',
+  'plpy_util.h',
+  'plpython.h',
+  install_dir: dir_include_server,
+)
+
+plpython_regress = [
+  'plpython_schema',
+  'plpython_populate',
+  'plpython_test',
+  'plpython_do',
+  'plpython_global',
+  'plpython_import',
+  'plpython_spi',
+  'plpython_newline',
+  'plpython_void',
+  'plpython_call',
+  'plpython_params',
+  'plpython_setof',
+  'plpython_record',
+  'plpython_trigger',
+  'plpython_types',
+  'plpython_error',
+  'plpython_ereport',
+  'plpython_unicode',
+  'plpython_quote',
+  'plpython_composite',
+  'plpython_subtransaction',
+  'plpython_transaction',
+  'plpython_drop',
+]
+
+tests += {
+  'name': 'plpython',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': plpython_regress,
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/pl/plpython/po/meson.build b/src/pl/plpython/po/meson.build
new file mode 100644
index 00000000000..542e27fbe1f
--- /dev/null
+++ b/src/pl/plpython/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('plpython-' + pg_version_major.to_string())
diff --git a/src/pl/tcl/meson.build b/src/pl/tcl/meson.build
new file mode 100644
index 00000000000..1acb49f1637
--- /dev/null
+++ b/src/pl/tcl/meson.build
@@ -0,0 +1,54 @@
+if not tcl_dep.found()
+  subdir_done()
+endif
+
+pltcl_sources = files(
+  'pltcl.c',
+)
+
+gen_pltclerrcodes = files('generate-pltclerrcodes.pl')
+pltcl_sources += custom_target('pltclerrcodes.h',
+  input: files('../../backend/utils/errcodes.txt'),
+  output: 'pltclerrcodes.h',
+  capture: true,
+  command: [perl, gen_pltclerrcodes, '@INPUT@']
+)
+
+shared_module('pltcl',
+  pltcl_sources,
+  include_directories: [include_directories('.'), postgres_inc],
+  kwargs: pg_mod_args + {
+    'dependencies': [tcl_dep, pg_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'pltcl.control',
+  'pltcl--1.0.sql',
+  'pltclu.control',
+  'pltclu--1.0.sql',
+  install_dir: dir_data_extension,
+)
+
+pltcl_regress = [
+  'pltcl_setup',
+  'pltcl_queries',
+  'pltcl_trigger',
+  'pltcl_call',
+  'pltcl_start_proc',
+  'pltcl_subxact',
+  'pltcl_unicode',
+  'pltcl_transaction',
+]
+
+tests += {
+  'name': 'pltcl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': pltcl_regress,
+    'regress_args': ['--load-extension=pltcl'],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/pl/tcl/po/meson.build b/src/pl/tcl/po/meson.build
new file mode 100644
index 00000000000..cc23ef1eb3b
--- /dev/null
+++ b/src/pl/tcl/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pltcl-' + pg_version_major.to_string())
diff --git a/contrib/adminpack/meson.build b/contrib/adminpack/meson.build
new file mode 100644
index 00000000000..b69f34346ce
--- /dev/null
+++ b/contrib/adminpack/meson.build
@@ -0,0 +1,22 @@
+adminpack = shared_module('adminpack',
+  ['adminpack.c'],
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'adminpack.control',
+  'adminpack--1.0.sql',
+  'adminpack--1.0--1.1.sql',
+  'adminpack--1.1--2.0.sql',
+  'adminpack--2.0--2.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'adminpack',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': ['adminpack'],
+  },
+}
diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
new file mode 100644
index 00000000000..d75d8c91c4b
--- /dev/null
+++ b/contrib/amcheck/meson.build
@@ -0,0 +1,36 @@
+amcheck = shared_module('amcheck', [
+    'verify_heapam.c',
+    'verify_nbtree.c',
+  ],
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'amcheck.control',
+  'amcheck--1.0.sql',
+  'amcheck--1.0--1.1.sql',
+  'amcheck--1.1--1.2.sql',
+  'amcheck--1.2--1.3.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'amcheck',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'check',
+      'check_btree',
+      'check_heap',
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/001_verify_heapam.pl',
+      't/002_cic.pl',
+      't/003_cic_2pc.pl',
+    ],
+  },
+}
+
diff --git a/contrib/auth_delay/meson.build b/contrib/auth_delay/meson.build
new file mode 100644
index 00000000000..941bb6f39a4
--- /dev/null
+++ b/contrib/auth_delay/meson.build
@@ -0,0 +1,4 @@
+autoinc = shared_module('auth_delay',
+  ['auth_delay.c'],
+  kwargs: contrib_mod_args,
+)
diff --git a/contrib/auto_explain/meson.build b/contrib/auto_explain/meson.build
new file mode 100644
index 00000000000..9456d569fc2
--- /dev/null
+++ b/contrib/auto_explain/meson.build
@@ -0,0 +1,15 @@
+auto_explain = shared_module('auto_explain',
+  files('auto_explain.c'),
+  kwargs: contrib_mod_args,
+)
+
+tests += {
+  'name': 'auto_explain',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_auto_explain.pl',
+    ],
+  },
+}
diff --git a/contrib/basebackup_to_shell/meson.build b/contrib/basebackup_to_shell/meson.build
new file mode 100644
index 00000000000..c9fb0f7cf68
--- /dev/null
+++ b/contrib/basebackup_to_shell/meson.build
@@ -0,0 +1,22 @@
+basebackup_to_shell_sources = files(
+  'basebackup_to_shell.c',
+)
+
+basebackup_to_shell = shared_module('basebackup_to_shell',
+  basebackup_to_shell_sources,
+  kwargs: contrib_mod_args,
+)
+
+
+tests += {
+  'name': 'basebackup_to_shell',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+    ],
+    'env': {'GZIP_PROGRAM': gzip.path(),
+            'TAR': tar.path()},
+  },
+}
diff --git a/contrib/basic_archive/meson.build b/contrib/basic_archive/meson.build
new file mode 100644
index 00000000000..b81582c7c0f
--- /dev/null
+++ b/contrib/basic_archive/meson.build
@@ -0,0 +1,23 @@
+basic_archive_sources = files(
+  'basic_archive.c',
+)
+
+basic_archive = shared_module('basic_archive',
+  basic_archive_sources,
+  kwargs: contrib_mod_args,
+)
+
+
+tests += {
+  'name': 'basic_archive',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'basic_archive',
+    ],
+    'regress_args': [
+      '--temp-config', files('basic_archive.conf'),
+    ],
+  },
+}
diff --git a/contrib/bloom/meson.build b/contrib/bloom/meson.build
new file mode 100644
index 00000000000..311cc10c557
--- /dev/null
+++ b/contrib/bloom/meson.build
@@ -0,0 +1,35 @@
+bloom_sources = files(
+  'blcost.c',
+  'blinsert.c',
+  'blscan.c',
+  'blutils.c',
+  'blvacuum.c',
+  'blvalidate.c',
+)
+
+bloom = shared_module('bloom',
+  bloom_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'bloom.control',
+  'bloom--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'bloom',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'bloom',
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/001_wal.pl',
+    ],
+  },
+}
diff --git a/contrib/bool_plperl/meson.build b/contrib/bool_plperl/meson.build
new file mode 100644
index 00000000000..c978f54402e
--- /dev/null
+++ b/contrib/bool_plperl/meson.build
@@ -0,0 +1,41 @@
+if not perl_dep.found()
+  subdir_done()
+endif
+
+bool_plperl_sources = files(
+  'bool_plperl.c',
+)
+
+bool_plperl = shared_module('bool_plperl',
+  bool_plperl_sources,
+  include_directories: [plperl_inc, include_directories('.')],
+  kwargs: contrib_mod_args + {
+    'dependencies': [perl_dep, contrib_mod_args['dependencies']],
+    'install_rpath': ':'.join(mod_install_rpaths + ['@0@/CORE'.format(archlibexp)]),
+    'build_rpath': '@0@/CORE'.format(archlibexp),
+  },
+)
+
+install_data(
+  'bool_plperl.control',
+  'bool_plperl--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+install_data(
+  'bool_plperlu.control',
+  'bool_plperlu--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'bool_plperl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'bool_plperl',
+      'bool_plperlu',
+    ],
+  },
+}
diff --git a/contrib/btree_gin/meson.build b/contrib/btree_gin/meson.build
new file mode 100644
index 00000000000..356dbe84f10
--- /dev/null
+++ b/contrib/btree_gin/meson.build
@@ -0,0 +1,53 @@
+btree_gin = shared_module('btree_gin',
+  files('btree_gin.c'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'btree_gin.control',
+  'btree_gin--1.0.sql',
+  'btree_gin--1.0--1.1.sql',
+  'btree_gin--1.1--1.2.sql',
+  'btree_gin--1.2--1.3.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'btree_gin',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'install_btree_gin',
+      'int2',
+      'int4',
+      'int8',
+      'float4',
+      'float8',
+      'money',
+      'oid',
+      'timestamp',
+      'timestamptz',
+      'time',
+      'timetz',
+      'date',
+      'interval',
+      'macaddr',
+      'macaddr8',
+      'inet',
+      'cidr',
+      'text',
+      'varchar',
+      'char',
+      'bytea',
+      'bit',
+      'varbit',
+      'numeric',
+      'enum',
+      'uuid',
+      'name',
+      'bool',
+      'bpchar',
+    ],
+  },
+}
diff --git a/contrib/btree_gist/meson.build b/contrib/btree_gist/meson.build
new file mode 100644
index 00000000000..6bd91b88fc3
--- /dev/null
+++ b/contrib/btree_gist/meson.build
@@ -0,0 +1,83 @@
+btree_gist_sources = files(
+  'btree_bit.c',
+  'btree_bool.c',
+  'btree_bytea.c',
+  'btree_cash.c',
+  'btree_date.c',
+  'btree_enum.c',
+  'btree_float4.c',
+  'btree_float8.c',
+  'btree_gist.c',
+  'btree_inet.c',
+  'btree_int2.c',
+  'btree_int4.c',
+  'btree_int8.c',
+  'btree_interval.c',
+  'btree_macaddr.c',
+  'btree_macaddr8.c',
+  'btree_numeric.c',
+  'btree_oid.c',
+  'btree_text.c',
+  'btree_time.c',
+  'btree_ts.c',
+  'btree_utils_num.c',
+  'btree_utils_var.c',
+  'btree_uuid.c',
+)
+
+btree_gist = shared_module('btree_gist',
+  btree_gist_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'btree_gist.control',
+  'btree_gist--1.0--1.1.sql',
+  'btree_gist--1.1--1.2.sql',
+  'btree_gist--1.2.sql',
+  'btree_gist--1.2--1.3.sql',
+  'btree_gist--1.3--1.4.sql',
+  'btree_gist--1.4--1.5.sql',
+  'btree_gist--1.5--1.6.sql',
+  'btree_gist--1.6--1.7.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'btree_gist',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'init',
+      'int2',
+      'int4',
+      'int8',
+      'float4',
+      'float8',
+      'cash',
+      'oid',
+      'timestamp',
+      'timestamptz',
+      'time',
+      'timetz',
+      'date',
+      'interval',
+      'macaddr',
+      'macaddr8',
+      'inet',
+      'cidr',
+      'text',
+      'varchar',
+      'char',
+      'bytea',
+      'bit',
+      'varbit',
+      'numeric',
+      'uuid',
+      'not_equal',
+      'enum',
+      'bool',
+    ],
+  },
+}
diff --git a/contrib/citext/meson.build b/contrib/citext/meson.build
new file mode 100644
index 00000000000..507745ba747
--- /dev/null
+++ b/contrib/citext/meson.build
@@ -0,0 +1,33 @@
+citext_sources = files(
+  'citext.c',
+)
+
+citext = shared_module('citext',
+  citext_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'citext.control',
+  'citext--1.0--1.1.sql',
+  'citext--1.1--1.2.sql',
+  'citext--1.2--1.3.sql',
+  'citext--1.3--1.4.sql',
+  'citext--1.4.sql',
+  'citext--1.4--1.5.sql',
+  'citext--1.5--1.6.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'citext',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'create_index_acl',
+      'citext',
+      'citext_utf8',
+    ],
+  },
+}
diff --git a/contrib/cube/meson.build b/contrib/cube/meson.build
new file mode 100644
index 00000000000..425c258d124
--- /dev/null
+++ b/contrib/cube/meson.build
@@ -0,0 +1,52 @@
+cube_sources = files(
+  'cube.c',
+)
+
+# cubescan is compiled as part of cubeparse
+cube_scan = custom_target('cubescan',
+  input: ['cubescan.l'],
+  output: ['cubescan.c'],
+  command: [flex_cmd, '@INPUT@'],)
+generated_sources += cube_scan
+
+cube_parse = custom_target('cubeparse',
+  input: 'cubeparse.y',
+  output: 'cubeparse.c',
+  depends: cube_scan,
+  command: [bison_cmd, '@INPUT@'],)
+generated_sources += cube_parse
+cube_sources += cube_parse
+
+cube = shared_module('cube',
+  cube_sources,
+  include_directories: include_directories('.'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'cube.control',
+  'cube--1.0--1.1.sql',
+  'cube--1.1--1.2.sql',
+  'cube--1.2.sql',
+  'cube--1.2--1.3.sql',
+  'cube--1.3--1.4.sql',
+  'cube--1.4--1.5.sql',
+  kwargs: contrib_data_args,
+)
+
+install_headers(
+  'cubedata.h',
+  install_dir: dir_include_extension / 'cube',
+)
+
+tests += {
+  'name': 'cube',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'cube',
+      'cube_sci',
+    ],
+  },
+}
diff --git a/contrib/dblink/meson.build b/contrib/dblink/meson.build
new file mode 100644
index 00000000000..1ebaa4ca00d
--- /dev/null
+++ b/contrib/dblink/meson.build
@@ -0,0 +1,30 @@
+dblink_sources = files(
+  'dblink.c',
+)
+
+dblink = shared_module('dblink',
+  dblink_sources,
+  kwargs: contrib_mod_args + {
+    'dependencies': contrib_mod_args['dependencies'] + [libpq],
+  },
+)
+
+install_data(
+  'dblink.control',
+  'dblink--1.0--1.1.sql',
+  'dblink--1.1--1.2.sql',
+  'dblink--1.2.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'dblink',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'dblink',
+    ],
+    'regress_args': ['--dlpath', meson.build_root() / 'src/test/regress'],
+  },
+}
diff --git a/contrib/dict_int/meson.build b/contrib/dict_int/meson.build
new file mode 100644
index 00000000000..2c937a3df5e
--- /dev/null
+++ b/contrib/dict_int/meson.build
@@ -0,0 +1,21 @@
+dict_int = shared_module('dict_int',
+  files('dict_int.c'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'dict_int.control',
+  'dict_int--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'dict_int',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'dict_int',
+    ],
+  },
+}
diff --git a/contrib/dict_xsyn/meson.build b/contrib/dict_xsyn/meson.build
new file mode 100644
index 00000000000..ec6e175733d
--- /dev/null
+++ b/contrib/dict_xsyn/meson.build
@@ -0,0 +1,28 @@
+dict_xsyn = shared_module('dict_xsyn',
+  files('dict_xsyn.c'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'dict_xsyn.control',
+  'dict_xsyn--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+install_data(
+  'xsyn_sample.rules',
+  kwargs: contrib_data_args + {
+    'install_dir': dir_data / 'tsearch_data'
+  }
+)
+
+tests += {
+  'name': 'dict_xsyn',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'dict_xsyn',
+    ],
+  },
+}
diff --git a/contrib/earthdistance/meson.build b/contrib/earthdistance/meson.build
new file mode 100644
index 00000000000..35b448870b8
--- /dev/null
+++ b/contrib/earthdistance/meson.build
@@ -0,0 +1,22 @@
+earthdistance = shared_module('earthdistance',
+  files('earthdistance.c'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'earthdistance.control',
+  'earthdistance--1.0--1.1.sql',
+  'earthdistance--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'earthdistance',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'earthdistance',
+    ],
+  },
+}
diff --git a/contrib/file_fdw/meson.build b/contrib/file_fdw/meson.build
new file mode 100644
index 00000000000..26d26d1e0c4
--- /dev/null
+++ b/contrib/file_fdw/meson.build
@@ -0,0 +1,21 @@
+file_fdw = shared_module('file_fdw',
+  files('file_fdw.c'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'file_fdw.control',
+  'file_fdw--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'file_fdw',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'file_fdw',
+    ],
+  },
+}
diff --git a/contrib/fuzzystrmatch/meson.build b/contrib/fuzzystrmatch/meson.build
new file mode 100644
index 00000000000..73d88e92cfe
--- /dev/null
+++ b/contrib/fuzzystrmatch/meson.build
@@ -0,0 +1,25 @@
+fuzzystrmatch = shared_module('fuzzystrmatch',
+  files(
+    'fuzzystrmatch.c',
+    'dmetaphone.c'
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'fuzzystrmatch.control',
+  'fuzzystrmatch--1.0--1.1.sql',
+  'fuzzystrmatch--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'fuzzystrmatch',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'fuzzystrmatch',
+    ],
+  },
+}
diff --git a/contrib/hstore/meson.build b/contrib/hstore/meson.build
new file mode 100644
index 00000000000..369c60d7f40
--- /dev/null
+++ b/contrib/hstore/meson.build
@@ -0,0 +1,43 @@
+# .. so that includes of hstore/hstore.h work
+hstore_inc = include_directories('.', '../')
+
+hstore = shared_module('hstore',
+  files(
+    'hstore_compat.c',
+    'hstore_gin.c',
+    'hstore_gist.c',
+    'hstore_io.c',
+    'hstore_op.c',
+    'hstore_subs.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'hstore.control',
+  'hstore--1.1--1.2.sql',
+  'hstore--1.2--1.3.sql',
+  'hstore--1.3--1.4.sql',
+  'hstore--1.4.sql',
+  'hstore--1.4--1.5.sql',
+  'hstore--1.5--1.6.sql',
+  'hstore--1.6--1.7.sql',
+  'hstore--1.7--1.8.sql',
+  kwargs: contrib_data_args,
+)
+
+install_headers(
+  'hstore.h',
+  install_dir: dir_include_extension / 'hstore',
+)
+
+tests += {
+  'name': 'hstore',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'hstore',
+    ],
+  },
+}
diff --git a/contrib/hstore_plperl/meson.build b/contrib/hstore_plperl/meson.build
new file mode 100644
index 00000000000..a450eab1aa3
--- /dev/null
+++ b/contrib/hstore_plperl/meson.build
@@ -0,0 +1,42 @@
+if not perl_dep.found()
+  subdir_done()
+endif
+
+hstore_plperl_sources = files(
+  'hstore_plperl.c',
+)
+
+hstore_plperl = shared_module('hstore_plperl',
+  hstore_plperl_sources,
+  include_directories: [plperl_inc, hstore_inc],
+  kwargs: contrib_mod_args + {
+    'dependencies': [perl_dep, contrib_mod_args['dependencies']],
+    'install_rpath': ':'.join(mod_install_rpaths + ['@0@/CORE'.format(archlibexp)]),
+    'build_rpath': '@0@/CORE'.format(archlibexp),
+  },
+)
+
+install_data(
+  'hstore_plperl.control',
+  'hstore_plperl--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+install_data(
+  'hstore_plperlu.control',
+  'hstore_plperlu--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'hstore_plperl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'hstore_plperl',
+      'hstore_plperlu',
+      'create_transform',
+    ],
+  },
+}
diff --git a/contrib/hstore_plpython/meson.build b/contrib/hstore_plpython/meson.build
new file mode 100644
index 00000000000..218de2587e6
--- /dev/null
+++ b/contrib/hstore_plpython/meson.build
@@ -0,0 +1,36 @@
+if not python3_dep.found()
+  subdir_done()
+endif
+
+hstore_plpython_sources = files(
+  'hstore_plpython.c',
+)
+
+hstore_plpython = shared_module('hstore_plpython3',
+  hstore_plpython_sources,
+  include_directories: [plpython_inc, hstore_inc, ],
+  c_args: ['-DPLPYTHON_LIBNAME="plpython3"'],
+  kwargs: contrib_mod_args + {
+    'dependencies': [python3_dep, contrib_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'hstore_plpython3u--1.0.sql',
+  'hstore_plpython3u.control',
+  kwargs: contrib_data_args,
+)
+
+hstore_plpython_regress = [
+  'hstore_plpython'
+]
+
+tests += {
+  'name': 'hstore_plpython',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': hstore_plpython_regress,
+    'regress_args': ['--load-extension=hstore'],
+  },
+}
diff --git a/contrib/intagg/meson.build b/contrib/intagg/meson.build
new file mode 100644
index 00000000000..a0f39366f47
--- /dev/null
+++ b/contrib/intagg/meson.build
@@ -0,0 +1,6 @@
+install_data(
+  'intagg.control',
+  'intagg--1.0--1.1.sql',
+  'intagg--1.1.sql',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/intarray/meson.build b/contrib/intarray/meson.build
new file mode 100644
index 00000000000..dfbfbc9fa6a
--- /dev/null
+++ b/contrib/intarray/meson.build
@@ -0,0 +1,36 @@
+intarray_sources = files(
+  '_int_bool.c',
+  '_int_gin.c',
+  '_int_gist.c',
+  '_int_op.c',
+  '_int_selfuncs.c',
+  '_int_tool.c',
+  '_intbig_gist.c',
+)
+
+intarray = shared_module('_int',
+  intarray_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'intarray.control',
+  'intarray--1.0--1.1.sql',
+  'intarray--1.1--1.2.sql',
+  'intarray--1.2.sql',
+  'intarray--1.2--1.3.sql',
+  'intarray--1.3--1.4.sql',
+  'intarray--1.4--1.5.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'intarray',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      '_int',
+    ],
+  },
+}
diff --git a/contrib/isn/meson.build b/contrib/isn/meson.build
new file mode 100644
index 00000000000..508e2dfa080
--- /dev/null
+++ b/contrib/isn/meson.build
@@ -0,0 +1,32 @@
+isn_sources = files(
+  'isn.c',
+)
+
+isn = shared_module('isn',
+  isn_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'isn.control',
+  'isn--1.0--1.1.sql',
+  'isn--1.1--1.2.sql',
+  'isn--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+install_headers(
+  'isn.h',
+  install_dir: dir_include_extension / 'isn',
+)
+
+tests += {
+  'name': 'isn',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'isn',
+    ],
+  },
+}
diff --git a/contrib/jsonb_plperl/meson.build b/contrib/jsonb_plperl/meson.build
new file mode 100644
index 00000000000..0c9f120c9b6
--- /dev/null
+++ b/contrib/jsonb_plperl/meson.build
@@ -0,0 +1,42 @@
+if not perl_dep.found()
+  subdir_done()
+endif
+
+jsonb_plperl_sources = files(
+  'jsonb_plperl.c',
+)
+
+jsonb_plperl = shared_module('jsonb_plperl',
+  jsonb_plperl_sources,
+  include_directories: [plperl_inc],
+  kwargs: contrib_mod_args + {
+    'dependencies': [perl_dep, contrib_mod_args['dependencies']],
+    'install_rpath': ':'.join(mod_install_rpaths + ['@0@/CORE'.format(archlibexp)]),
+    'build_rpath': '@0@/CORE'.format(archlibexp),
+  },
+)
+
+install_data(
+  'jsonb_plperl.control',
+  'jsonb_plperl--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+install_data(
+  'jsonb_plperlu.control',
+  'jsonb_plperlu--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'jsonb_plperl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'jsonb_plperl',
+      'jsonb_plperlu',
+    ],
+  },
+}
diff --git a/contrib/jsonb_plpython/meson.build b/contrib/jsonb_plpython/meson.build
new file mode 100644
index 00000000000..763dc4916e6
--- /dev/null
+++ b/contrib/jsonb_plpython/meson.build
@@ -0,0 +1,35 @@
+if not python3_dep.found()
+  subdir_done()
+endif
+
+jsonb_plpython_sources = files(
+  'jsonb_plpython.c',
+)
+
+jsonb_plpython = shared_module('jsonb_plpython3',
+  jsonb_plpython_sources,
+  include_directories: [plpython_inc],
+  c_args: ['-DPLPYTHON_LIBNAME="plpython3"'],
+  kwargs: contrib_mod_args + {
+    'dependencies': [python3_dep, contrib_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'jsonb_plpython3u.control',
+  'jsonb_plpython3u--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+jsonb_plpython_regress = [
+  'jsonb_plpython'
+]
+
+tests += {
+  'name': 'jsonb_plpython',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': jsonb_plpython_regress,
+  },
+}
diff --git a/contrib/lo/meson.build b/contrib/lo/meson.build
new file mode 100644
index 00000000000..224a2562017
--- /dev/null
+++ b/contrib/lo/meson.build
@@ -0,0 +1,26 @@
+lo_sources = files(
+  'lo.c',
+)
+
+lo = shared_module('lo',
+  lo_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'lo.control',
+  'lo--1.0--1.1.sql',
+  'lo--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'lo',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'lo',
+    ],
+  },
+}
diff --git a/contrib/ltree/meson.build b/contrib/ltree/meson.build
new file mode 100644
index 00000000000..222c64bb35d
--- /dev/null
+++ b/contrib/ltree/meson.build
@@ -0,0 +1,43 @@
+ltree_sources = files(
+  '_ltree_gist.c',
+  '_ltree_op.c',
+  'crc32.c',
+  'lquery_op.c',
+  'ltree_gist.c',
+  'ltree_io.c',
+  'ltree_op.c',
+  'ltxtquery_io.c',
+  'ltxtquery_op.c',
+)
+
+# .. so that includes of ltree/ltree.h work
+ltree_inc = include_directories('.', '../')
+
+ltree = shared_module('ltree',
+  ltree_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'ltree.control',
+  'ltree--1.0--1.1.sql',
+  'ltree--1.1--1.2.sql',
+  'ltree--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+install_headers(
+  'ltree.h',
+  install_dir: dir_include_extension / 'ltree',
+)
+
+tests += {
+  'name': 'ltree',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'ltree',
+    ],
+  },
+}
diff --git a/contrib/ltree_plpython/meson.build b/contrib/ltree_plpython/meson.build
new file mode 100644
index 00000000000..8bc09831dc8
--- /dev/null
+++ b/contrib/ltree_plpython/meson.build
@@ -0,0 +1,36 @@
+if not python3_dep.found()
+  subdir_done()
+endif
+
+ltree_plpython_sources = files(
+  'ltree_plpython.c',
+)
+
+ltree_plpython = shared_module('ltree_plpython3',
+  ltree_plpython_sources,
+  include_directories: [plpython_inc, ltree_inc],
+  c_args: ['-DPLPYTHON_LIBNAME="plpython3"'],
+  kwargs: contrib_mod_args + {
+    'dependencies': [python3_dep, contrib_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'ltree_plpython3u--1.0.sql',
+  'ltree_plpython3u.control',
+  kwargs: contrib_data_args,
+)
+
+ltree_plpython_regress = [
+  'ltree_plpython'
+]
+
+tests += {
+  'name': 'ltree_plpython',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': ltree_plpython_regress,
+    'regress_args': ['--load-extension=ltree'],
+  },
+}
diff --git a/contrib/meson.build b/contrib/meson.build
new file mode 100644
index 00000000000..84752d4bd0f
--- /dev/null
+++ b/contrib/meson.build
@@ -0,0 +1,66 @@
+contrib_mod_args = pg_mod_args
+
+contrib_data_dir = dir_data_extension
+contrib_data_args = {
+  'install_dir': contrib_data_dir,
+}
+
+subdir('adminpack')
+subdir('amcheck')
+subdir('auth_delay')
+subdir('auto_explain')
+subdir('basic_archive')
+subdir('bloom')
+subdir('basebackup_to_shell')
+subdir('bool_plperl')
+subdir('btree_gin')
+subdir('btree_gist')
+subdir('citext')
+subdir('cube')
+subdir('dblink')
+subdir('dict_int')
+subdir('dict_xsyn')
+subdir('earthdistance')
+subdir('file_fdw')
+subdir('fuzzystrmatch')
+subdir('hstore')
+subdir('hstore_plperl')
+subdir('hstore_plpython')
+subdir('intagg')
+subdir('intarray')
+subdir('isn')
+subdir('jsonb_plperl')
+subdir('jsonb_plpython')
+subdir('lo')
+subdir('ltree')
+subdir('ltree_plpython')
+subdir('oid2name')
+subdir('old_snapshot')
+subdir('pageinspect')
+subdir('passwordcheck')
+subdir('pg_buffercache')
+subdir('pgcrypto')
+subdir('pg_freespacemap')
+subdir('pg_prewarm')
+subdir('pgrowlocks')
+subdir('pg_stat_statements')
+subdir('pgstattuple')
+subdir('pg_surgery')
+subdir('pg_trgm')
+subdir('pg_visibility')
+subdir('pg_walinspect')
+subdir('postgres_fdw')
+subdir('seg')
+subdir('sepgsql')
+subdir('spi')
+subdir('sslinfo')
+# start-scripts doesn't contain build products
+subdir('tablefunc')
+subdir('tcn')
+subdir('test_decoding')
+subdir('tsm_system_rows')
+subdir('tsm_system_time')
+subdir('unaccent')
+subdir('uuid-ossp')
+subdir('vacuumlo')
+subdir('xml2')
diff --git a/contrib/oid2name/meson.build b/contrib/oid2name/meson.build
new file mode 100644
index 00000000000..633ce305a05
--- /dev/null
+++ b/contrib/oid2name/meson.build
@@ -0,0 +1,16 @@
+executable('oid2name',
+  ['oid2name.c'],
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'oid2name',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+    ],
+  },
+}
diff --git a/contrib/old_snapshot/meson.build b/contrib/old_snapshot/meson.build
new file mode 100644
index 00000000000..5785c29e9f8
--- /dev/null
+++ b/contrib/old_snapshot/meson.build
@@ -0,0 +1,14 @@
+old_snapshot_sources = files(
+  'time_mapping.c',
+)
+
+old_snapshot = shared_module('old_snapshot',
+  old_snapshot_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'old_snapshot.control',
+  'old_snapshot--1.0.sql',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/pageinspect/meson.build b/contrib/pageinspect/meson.build
new file mode 100644
index 00000000000..efae36c0909
--- /dev/null
+++ b/contrib/pageinspect/meson.build
@@ -0,0 +1,59 @@
+pageinspect_sources = files(
+  'brinfuncs.c',
+  'btreefuncs.c',
+  'fsmfuncs.c',
+  'ginfuncs.c',
+  'gistfuncs.c',
+  'hashfuncs.c',
+  'heapfuncs.c',
+  'rawpage.c',
+)
+
+if host_system == 'windows'
+  pageinspect_sources += windows.compile_resources(
+    custom_target('win32ver.rc', kwargs: rcgen_kw,
+      command: rcgen_lib_cmd + [
+        '--FILEDESC', 'pageinspect - functions to inspect contents of database pages',
+        '--NAME', 'pageinspect',]),
+    kwargs: rccompile_kw,
+  )
+endif
+
+pageinspect = shared_module('pageinspect',
+  pageinspect_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pageinspect--1.0--1.1.sql',
+  'pageinspect--1.1--1.2.sql',
+  'pageinspect--1.2--1.3.sql',
+  'pageinspect--1.3--1.4.sql',
+  'pageinspect--1.4--1.5.sql',
+  'pageinspect--1.5--1.6.sql',
+  'pageinspect--1.5.sql',
+  'pageinspect--1.6--1.7.sql',
+  'pageinspect--1.7--1.8.sql',
+  'pageinspect--1.8--1.9.sql',
+  'pageinspect--1.9--1.10.sql',
+  'pageinspect.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pageinspect',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'page',
+      'btree',
+      'brin',
+      'gin',
+      'gist',
+      'hash',
+      'checksum',
+      'oldextversions',
+    ],
+  },
+}
diff --git a/contrib/passwordcheck/meson.build b/contrib/passwordcheck/meson.build
new file mode 100644
index 00000000000..58128269d06
--- /dev/null
+++ b/contrib/passwordcheck/meson.build
@@ -0,0 +1,29 @@
+passwordcheck_sources = files(
+  'passwordcheck.c',
+)
+
+passwordcheck_c_args = []
+passwordcheck_deps = []
+
+# uncomment the following two lines to enable cracklib support
+# passwordcheck_c_args += ['-DUSE_CRACKLIB', '-DCRACKLIB_DICTPATH="/usr/lib/cracklib_dict"']
+# passwordcheck_deps += [cc.find_library('crack')]
+
+passwordcheck = shared_module('passwordcheck',
+  passwordcheck_sources,
+  c_args: passwordcheck_c_args,
+  kwargs: contrib_mod_args + {
+    'dependencies': contrib_mod_args.get('dependencies') + passwordcheck_deps,
+  }
+)
+
+tests += {
+  'name': 'passwordcheck',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'passwordcheck',
+    ],
+  },
+}
diff --git a/contrib/pg_buffercache/meson.build b/contrib/pg_buffercache/meson.build
new file mode 100644
index 00000000000..9650ec1ccc5
--- /dev/null
+++ b/contrib/pg_buffercache/meson.build
@@ -0,0 +1,26 @@
+pg_buffercache = shared_module('pg_buffercache',
+  files(
+    'pg_buffercache_pages.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_buffercache--1.0--1.1.sql',
+  'pg_buffercache--1.1--1.2.sql',
+  'pg_buffercache--1.2--1.3.sql',
+  'pg_buffercache--1.2.sql',
+  'pg_buffercache.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pg_buffercache',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_buffercache',
+    ],
+  },
+}
diff --git a/contrib/pg_freespacemap/meson.build b/contrib/pg_freespacemap/meson.build
new file mode 100644
index 00000000000..07295081278
--- /dev/null
+++ b/contrib/pg_freespacemap/meson.build
@@ -0,0 +1,28 @@
+pg_freespacemap = shared_module('pg_freespacemap',
+  files(
+    'pg_freespacemap.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_freespacemap--1.0--1.1.sql',
+  'pg_freespacemap--1.1--1.2.sql',
+  'pg_freespacemap--1.1.sql',
+  'pg_freespacemap.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pg_freespacemap',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_freespacemap',
+    ],
+    'regress_args': [
+      '--temp-config', files('pg_freespacemap.conf')
+    ],
+  },
+}
diff --git a/contrib/pg_prewarm/meson.build b/contrib/pg_prewarm/meson.build
new file mode 100644
index 00000000000..08d0831e9da
--- /dev/null
+++ b/contrib/pg_prewarm/meson.build
@@ -0,0 +1,26 @@
+pg_prewarm = shared_module('pg_prewarm',
+  files(
+    'autoprewarm.c',
+    'pg_prewarm.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_prewarm--1.0--1.1.sql',
+  'pg_prewarm--1.1--1.2.sql',
+  'pg_prewarm--1.1.sql',
+  'pg_prewarm.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pg_prewarm',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+    ],
+  },
+}
diff --git a/contrib/pg_stat_statements/meson.build b/contrib/pg_stat_statements/meson.build
new file mode 100644
index 00000000000..1b977f06b13
--- /dev/null
+++ b/contrib/pg_stat_statements/meson.build
@@ -0,0 +1,34 @@
+pg_stat_statements = shared_module('pg_stat_statements',
+  files('pg_stat_statements.c'),
+  kwargs: contrib_mod_args + {
+    'dependencies': contrib_mod_args['dependencies'],
+  },
+)
+
+install_data(
+  'pg_stat_statements.control',
+  'pg_stat_statements--1.4.sql',
+  'pg_stat_statements--1.9--1.10.sql',
+  'pg_stat_statements--1.8--1.9.sql',
+  'pg_stat_statements--1.7--1.8.sql',
+  'pg_stat_statements--1.6--1.7.sql',
+  'pg_stat_statements--1.5--1.6.sql',
+  'pg_stat_statements--1.4--1.5.sql',
+  'pg_stat_statements--1.3--1.4.sql',
+  'pg_stat_statements--1.2--1.3.sql',
+  'pg_stat_statements--1.1--1.2.sql',
+  'pg_stat_statements--1.0--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pg_stat_statements',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_stat_statements',
+    ],
+    'regress_args': ['--temp-config', files('pg_stat_statements.conf')],
+  },
+}
diff --git a/contrib/pg_surgery/meson.build b/contrib/pg_surgery/meson.build
new file mode 100644
index 00000000000..8ce84ba728d
--- /dev/null
+++ b/contrib/pg_surgery/meson.build
@@ -0,0 +1,24 @@
+pg_surgery = shared_module('pg_surgery',
+  files(
+    'heap_surgery.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_surgery--1.0.sql',
+  'pg_surgery.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'pg_surgery',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'heap_surgery',
+    ],
+  },
+}
diff --git a/contrib/pg_trgm/meson.build b/contrib/pg_trgm/meson.build
new file mode 100644
index 00000000000..37931279f65
--- /dev/null
+++ b/contrib/pg_trgm/meson.build
@@ -0,0 +1,34 @@
+pg_trgm = shared_module('pg_trgm',
+  files(
+    'trgm_gin.c',
+    'trgm_gist.c',
+    'trgm_op.c',
+    'trgm_regexp.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_trgm--1.0--1.1.sql',
+  'pg_trgm--1.1--1.2.sql',
+  'pg_trgm--1.2--1.3.sql',
+  'pg_trgm--1.3--1.4.sql',
+  'pg_trgm--1.3.sql',
+  'pg_trgm--1.4--1.5.sql',
+  'pg_trgm--1.5--1.6.sql',
+  'pg_trgm.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pg_trgm',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_trgm',
+      'pg_word_trgm',
+      'pg_strict_word_trgm',
+    ],
+  },
+}
diff --git a/contrib/pg_visibility/meson.build b/contrib/pg_visibility/meson.build
new file mode 100644
index 00000000000..958a73a69ff
--- /dev/null
+++ b/contrib/pg_visibility/meson.build
@@ -0,0 +1,26 @@
+pg_visibility = shared_module('pg_visibility',
+  files(
+    'pg_visibility.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_visibility--1.0--1.1.sql',
+  'pg_visibility--1.1--1.2.sql',
+  'pg_visibility--1.1.sql',
+  'pg_visibility.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'pg_visibility',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_visibility',
+    ],
+  },
+}
diff --git a/contrib/pg_walinspect/meson.build b/contrib/pg_walinspect/meson.build
new file mode 100644
index 00000000000..64d08bcfb45
--- /dev/null
+++ b/contrib/pg_walinspect/meson.build
@@ -0,0 +1,37 @@
+pg_walinspect_sources = files('pg_walinspect.c')
+
+if host_system == 'windows'
+  pg_walinspect_sources += windows.compile_resources(
+    custom_target('win32ver.rc', kwargs: rcgen_kw,
+      command: rcgen_bin_cmd + [
+        '--FILEDESC', 'pg_walinspect - functions to inspect contents of PostgreSQL Write-Ahead Log',
+        '--NAME', 'pg_walinspect',
+      ]),
+    kwargs: rccompile_kw,
+  )
+endif
+
+pg_walinspect = shared_module('pg_walinspect',
+  pg_walinspect_sources,
+  kwargs: contrib_mod_args + {
+      'dependencies': contrib_mod_args['dependencies'],
+  },
+)
+
+install_data(
+  'pg_walinspect.control',
+  'pg_walinspect--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pg_walinspect',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_walinspect',
+    ],
+    'regress_args': ['--temp-config', files('walinspect.conf')],
+  },
+}
diff --git a/contrib/pgcrypto/meson.build b/contrib/pgcrypto/meson.build
new file mode 100644
index 00000000000..647bea8559e
--- /dev/null
+++ b/contrib/pgcrypto/meson.build
@@ -0,0 +1,99 @@
+if not ssl.found()
+  subdir_done()
+endif
+
+pgcrypto_sources = files(
+  'crypt-blowfish.c',
+  'crypt-des.c',
+  'crypt-gensalt.c',
+  'crypt-md5.c',
+  'mbuf.c',
+  'pgcrypto.c',
+  'pgp-armor.c',
+  'pgp-cfb.c',
+  'pgp-compress.c',
+  'pgp-decrypt.c',
+  'pgp-encrypt.c',
+  'pgp-info.c',
+  'pgp-mpi.c',
+  'pgp-pgsql.c',
+  'pgp-pubdec.c',
+  'pgp-pubenc.c',
+  'pgp-pubkey.c',
+  'pgp-s2k.c',
+  'pgp.c',
+  'px-crypt.c',
+  'px-hmac.c',
+  'px.c',
+)
+
+pgcrypto_regress = [
+  'init',
+  'md5',
+  'sha1',
+  'hmac-md5',
+  'hmac-sha1',
+  'blowfish',
+  'rijndael',
+  'sha2',
+  'des',
+  '3des',
+  'cast5',
+  'crypt-des',
+  'crypt-md5',
+  'crypt-blowfish',
+  'crypt-xdes',
+  'pgp-armor',
+  'pgp-decrypt',
+  'pgp-encrypt',
+  'pgp-pubkey-decrypt',
+  'pgp-pubkey-encrypt',
+  'pgp-info',
+]
+
+pgcrypto_openssl_sources = files(
+  'openssl.c',
+  'pgp-mpi-openssl.c',
+)
+
+pgcrypto_deps = []
+pgcrypto_link_with = []
+
+pgcrypto_deps += ssl
+pgcrypto_sources += pgcrypto_openssl_sources
+
+if zlib.found()
+  pgcrypto_deps += zlib
+  pgcrypto_regress += 'pgp-compression'
+else
+  pgcrypto_regress += 'pgp-zlib-DISABLED'
+endif
+
+pgcrypto = shared_module('pgcrypto',
+  pgcrypto_sources,
+  link_with: pgcrypto_link_with,
+  kwargs: contrib_mod_args + {
+    'dependencies': [pgcrypto_deps, contrib_mod_args['dependencies']]
+  },
+)
+
+install_data(
+  'pgcrypto--1.0--1.1.sql',
+  'pgcrypto--1.1--1.2.sql',
+  'pgcrypto--1.2--1.3.sql',
+  'pgcrypto--1.3.sql',
+  'pgcrypto.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'pgcrypto',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      pgcrypto_regress,
+    ],
+  },
+}
diff --git a/contrib/pgrowlocks/meson.build b/contrib/pgrowlocks/meson.build
new file mode 100644
index 00000000000..5b1f8d520a6
--- /dev/null
+++ b/contrib/pgrowlocks/meson.build
@@ -0,0 +1,14 @@
+pgrowlocks = shared_module('pgrowlocks',
+  files(
+    'pgrowlocks.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pgrowlocks--1.0--1.1.sql',
+  'pgrowlocks--1.1--1.2.sql',
+  'pgrowlocks--1.2.sql',
+  'pgrowlocks.control',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/pgstattuple/meson.build b/contrib/pgstattuple/meson.build
new file mode 100644
index 00000000000..190f8b5d92b
--- /dev/null
+++ b/contrib/pgstattuple/meson.build
@@ -0,0 +1,31 @@
+pgstattuple = shared_module('pgstattuple',
+  files(
+    'pgstatapprox.c',
+    'pgstatindex.c',
+    'pgstattuple.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pgstattuple--1.0--1.1.sql',
+  'pgstattuple--1.1--1.2.sql',
+  'pgstattuple--1.2--1.3.sql',
+  'pgstattuple--1.3--1.4.sql',
+  'pgstattuple--1.4--1.5.sql',
+  'pgstattuple--1.4.sql',
+  'pgstattuple.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'pgstattuple',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pgstattuple',
+    ],
+  },
+}
diff --git a/contrib/postgres_fdw/meson.build b/contrib/postgres_fdw/meson.build
new file mode 100644
index 00000000000..f08bb024707
--- /dev/null
+++ b/contrib/postgres_fdw/meson.build
@@ -0,0 +1,33 @@
+postgres_fdw_sources = files(
+  'connection.c',
+  'deparse.c',
+  'option.c',
+  'postgres_fdw.c',
+  'shippable.c',
+)
+
+postgres_fdw = shared_module('postgres_fdw',
+  postgres_fdw_sources,
+  kwargs: contrib_mod_args + {
+    'dependencies': contrib_mod_args['dependencies'] + [libpq],
+  },
+)
+
+install_data(
+  'postgres_fdw.control',
+  'postgres_fdw--1.0.sql',
+  'postgres_fdw--1.0--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'postgres_fdw',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'postgres_fdw',
+    ],
+    'regress_args': ['--dlpath', meson.build_root() / 'src/test/regress'],
+  },
+}
diff --git a/contrib/seg/meson.build b/contrib/seg/meson.build
new file mode 100644
index 00000000000..b1f9db50e42
--- /dev/null
+++ b/contrib/seg/meson.build
@@ -0,0 +1,50 @@
+seg_sources = files(
+  'seg.c',
+)
+
+# segscan is compiled as part of segparse
+seg_scan = custom_target('segscan',
+  input: ['segscan.l'],
+  output: ['segscan.c'],
+  command: [flex_cmd, '@INPUT@'],)
+generated_sources += seg_scan
+
+seg_parse = custom_target('segparse',
+  input: 'segparse.y',
+  output: 'segparse.c',
+  depends: seg_scan,
+  command: [bison_cmd, '@INPUT@'],)
+generated_sources += seg_parse
+seg_sources += seg_parse
+
+seg = shared_module('seg',
+  seg_sources,
+  include_directories: include_directories('.'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'seg.control',
+  'seg--1.0--1.1.sql',
+  'seg--1.1--1.2.sql',
+  'seg--1.1.sql',
+  'seg--1.2--1.3.sql',
+  'seg--1.3--1.4.sql',
+  kwargs: contrib_data_args,
+)
+
+install_headers(
+  'segdata.h',
+  install_dir: dir_include_extension / 'seg',
+)
+
+tests += {
+  'name': 'seg',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'seg',
+    ],
+  },
+}
diff --git a/contrib/sepgsql/meson.build b/contrib/sepgsql/meson.build
new file mode 100644
index 00000000000..83e74f035b1
--- /dev/null
+++ b/contrib/sepgsql/meson.build
@@ -0,0 +1,33 @@
+if not selinux.found()
+  subdir_done()
+endif
+
+sepgsql_sources = files(
+  'database.c',
+  'dml.c',
+  'hooks.c',
+  'label.c',
+  'proc.c',
+  'relation.c',
+  'schema.c',
+  'selinux.c',
+  'uavc.c',
+)
+
+sepgsql = shared_module('sepgsql',
+  sepgsql_sources,
+  kwargs: contrib_mod_args + {
+    'dependencies': [selinux, contrib_mod_args['dependencies']],
+  }
+)
+
+custom_target('sepgsql.sql',
+  input: 'sepgsql.sql.in',
+  output: 'sepgsql.sql',
+  command: [sed, '-e', 's,MODULE_PATHNAME,$libdir/sepgsql,g', '@INPUT@'],
+  capture: true,
+  install: true,
+  install_dir: contrib_data_args['install_dir'],
+)
+
+# TODO: implement sepgsql tests
diff --git a/contrib/spi/meson.build b/contrib/spi/meson.build
new file mode 100644
index 00000000000..49e55026018
--- /dev/null
+++ b/contrib/spi/meson.build
@@ -0,0 +1,46 @@
+autoinc = shared_module('autoinc',
+  ['autoinc.c'],
+  kwargs: contrib_mod_args,
+)
+
+install_data('autoinc.control', 'autoinc--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+
+insert_username = shared_module('insert_username',
+  ['insert_username.c'],
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'insert_username.control',
+  'insert_username--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+
+moddatetime = shared_module('moddatetime',
+  ['moddatetime.c'],
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'moddatetime.control',
+  'moddatetime--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+# this is needed for the regression tests;
+# comment out if you want a quieter refint package for other uses
+refint_cflags = ['-DREFINT_VERBOSE']
+
+refint = shared_module('refint',
+  ['refint.c'],
+  c_args: refint_cflags,
+  kwargs: contrib_mod_args,
+)
+
+install_data('refint.control', 'refint--1.0.sql',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/sslinfo/meson.build b/contrib/sslinfo/meson.build
new file mode 100644
index 00000000000..80b2c56ede2
--- /dev/null
+++ b/contrib/sslinfo/meson.build
@@ -0,0 +1,20 @@
+if not ssl.found()
+  subdir_done()
+endif
+
+sslinfo = shared_module('sslinfo',
+  files(
+    'sslinfo.c',
+  ),
+  kwargs: contrib_mod_args + {
+    'dependencies': [ssl, contrib_mod_args['dependencies']],
+  }
+)
+
+install_data(
+  'sslinfo--1.0--1.1.sql',
+  'sslinfo--1.1--1.2.sql',
+  'sslinfo--1.2.sql',
+  'sslinfo.control',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/tablefunc/meson.build b/contrib/tablefunc/meson.build
new file mode 100644
index 00000000000..651f59726a7
--- /dev/null
+++ b/contrib/tablefunc/meson.build
@@ -0,0 +1,24 @@
+tablefunc = shared_module('tablefunc',
+  files(
+    'tablefunc.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'tablefunc--1.0.sql',
+  'tablefunc.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'tablefunc',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'tablefunc',
+    ],
+  },
+}
diff --git a/contrib/tcn/meson.build b/contrib/tcn/meson.build
new file mode 100644
index 00000000000..89d6656403d
--- /dev/null
+++ b/contrib/tcn/meson.build
@@ -0,0 +1,23 @@
+tcn = shared_module('tcn',
+  files(
+    'tcn.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'tcn--1.0.sql',
+  'tcn.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'tcn',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'isolation': {
+    'specs': [
+      'tcn',
+    ],
+  },
+}
diff --git a/contrib/test_decoding/meson.build b/contrib/test_decoding/meson.build
new file mode 100644
index 00000000000..0719350a0dd
--- /dev/null
+++ b/contrib/test_decoding/meson.build
@@ -0,0 +1,62 @@
+test_decoding_sources = files(
+  'test_decoding.c',
+)
+
+test_decoding = shared_module('test_decoding',
+  test_decoding_sources,
+  kwargs: contrib_mod_args,
+)
+
+tests += {
+  'name': 'test_decoding',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'ddl',
+      'xact',
+      'rewrite',
+      'toast',
+      'permissions',
+      'decoding_in_xact',
+      'decoding_into_rel',
+      'binary',
+      'prepared',
+      'replorigin',
+      'time',
+      'messages',
+      'spill',
+      'slot',
+      'truncate',
+      'stream',
+      'stats',
+      'twophase',
+      'twophase_stream',
+    ],
+    'regress_args': [
+      '--temp-config', files('logical.conf'),
+    ],
+  },
+  'isolation': {
+    'specs': [
+      'mxact',
+      'delayed_startup',
+      'ondisk_startup',
+      'concurrent_ddl_dml',
+      'oldest_xmin',
+      'snapshot_transfer',
+      'subxact_without_top',
+      'concurrent_stream',
+      'twophase_snapshot',
+      'slot_creation_error',
+    ],
+    'regress_args': [
+      '--temp-config', files('logical.conf'),
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/001_repl_stats.pl',
+    ],
+  },
+}
diff --git a/contrib/tsm_system_rows/meson.build b/contrib/tsm_system_rows/meson.build
new file mode 100644
index 00000000000..af8903e6db7
--- /dev/null
+++ b/contrib/tsm_system_rows/meson.build
@@ -0,0 +1,23 @@
+tsm_system_rows = shared_module('tsm_system_rows',
+  files(
+    'tsm_system_rows.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'tsm_system_rows--1.0.sql',
+  'tsm_system_rows.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'tsm_system_rows',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'tsm_system_rows',
+    ],
+  },
+}
diff --git a/contrib/tsm_system_time/meson.build b/contrib/tsm_system_time/meson.build
new file mode 100644
index 00000000000..99e265a2e13
--- /dev/null
+++ b/contrib/tsm_system_time/meson.build
@@ -0,0 +1,23 @@
+tsm_system_time = shared_module('tsm_system_time',
+  files(
+    'tsm_system_time.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'tsm_system_time--1.0.sql',
+  'tsm_system_time.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'tsm_system_time',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'tsm_system_time',
+    ],
+  },
+}
diff --git a/contrib/unaccent/meson.build b/contrib/unaccent/meson.build
new file mode 100644
index 00000000000..a6a03d68784
--- /dev/null
+++ b/contrib/unaccent/meson.build
@@ -0,0 +1,31 @@
+unaccent = shared_module('unaccent',
+  files(
+    'unaccent.c',
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'unaccent--1.0--1.1.sql',
+  'unaccent--1.1.sql',
+  'unaccent.control',
+  kwargs: contrib_data_args,
+)
+
+install_data(
+  'unaccent.rules',
+  install_dir: dir_data / 'tsearch_data'
+)
+
+# XXX: Implement downlo
+tests += {
+  'name': 'unaccent',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'unaccent',
+    ],
+    'regress_args': ['--encoding=UTF8'],
+  },
+}
diff --git a/contrib/uuid-ossp/meson.build b/contrib/uuid-ossp/meson.build
new file mode 100644
index 00000000000..abc52797dce
--- /dev/null
+++ b/contrib/uuid-ossp/meson.build
@@ -0,0 +1,32 @@
+if not uuid.found()
+  subdir_done()
+endif
+
+uuid_ossp = shared_module('uuid-ossp',
+  files(
+    'uuid-ossp.c',
+  ),
+  kwargs: contrib_mod_args + {
+    'dependencies': [uuid, contrib_mod_args['dependencies']],
+  },
+
+)
+
+install_data(
+  'uuid-ossp--1.0--1.1.sql',
+  'uuid-ossp--1.1.sql',
+  'uuid-ossp.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'uuid-ossp',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'uuid_ossp',
+    ],
+  },
+}
diff --git a/contrib/vacuumlo/meson.build b/contrib/vacuumlo/meson.build
new file mode 100644
index 00000000000..af8faf22e34
--- /dev/null
+++ b/contrib/vacuumlo/meson.build
@@ -0,0 +1,16 @@
+executable('vacuumlo',
+  ['vacuumlo.c'],
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'vacuumlo',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+    ],
+  },
+}
diff --git a/contrib/xml2/meson.build b/contrib/xml2/meson.build
new file mode 100644
index 00000000000..dcc7bf5bf69
--- /dev/null
+++ b/contrib/xml2/meson.build
@@ -0,0 +1,31 @@
+if not libxml.found()
+  subdir_done()
+endif
+
+xml2 = shared_module('pgxml',
+  files(
+    'xpath.c',
+    'xslt_proc.c',
+  ),
+  kwargs: contrib_mod_args + {
+    'dependencies': [libxml, libxslt, contrib_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'xml2--1.0--1.1.sql',
+  'xml2--1.1.sql',
+  'xml2.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'xml2',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'xml2',
+    ],
+  },
+}
diff --git a/src/interfaces/ecpg/compatlib/meson.build b/src/interfaces/ecpg/compatlib/meson.build
new file mode 100644
index 00000000000..e1db85c48d8
--- /dev/null
+++ b/src/interfaces/ecpg/compatlib/meson.build
@@ -0,0 +1,21 @@
+export_file = custom_target('libpq.exports', kwargs: gen_export_kwargs)
+
+ecpg_compat = both_libraries('libecpg_compat',
+  'informix.c',
+  include_directories: ['.', ecpg_inc, postgres_inc, libpq_inc],
+  c_args: ['-DSO_MAJOR_VERSION=3'],
+  dependencies: [frontend_shlib_code, thread_dep],
+  link_with: [ecpglib, ecpg_pgtypes],
+  soversion: host_system != 'windows' ? '3' : '',
+  darwin_versions: ['3', '3.' + pg_version_major.to_string()],
+  version: '3.' + pg_version_major.to_string(),
+  link_args: export_fmt.format(export_file.full_path()),
+  link_depends: export_file,
+  kwargs: default_lib_args,
+)
+
+pkgconfig.generate(
+  ecpg_compat.get_shared_lib(),
+  description: 'PostgreSQL libecpg_compat library',
+  url: pg_url,
+)
diff --git a/src/interfaces/ecpg/ecpglib/meson.build b/src/interfaces/ecpg/ecpglib/meson.build
new file mode 100644
index 00000000000..6de0b9ac6f7
--- /dev/null
+++ b/src/interfaces/ecpg/ecpglib/meson.build
@@ -0,0 +1,36 @@
+ecpglib_sources = files(
+  'connect.c',
+  'data.c',
+  'descriptor.c',
+  'error.c',
+  'execute.c',
+  'memory.c',
+  'misc.c',
+  'prepare.c',
+  'sqlda.c',
+  'typename.c',
+)
+
+export_file = custom_target('libpq.exports', kwargs: gen_export_kwargs)
+
+ecpglib = both_libraries('libecpg',
+  ecpglib_sources,
+  include_directories: ['.', ecpg_inc, postgres_inc],
+  c_args: ['-DSO_MAJOR_VERSION=6'],
+  dependencies: [frontend_shlib_code, libpq, thread_dep],
+  link_with: [ecpg_pgtypes],
+  soversion: host_system != 'windows' ? '6' : '',
+  darwin_versions: ['6', '6.' + pg_version_major.to_string()],
+  version: '6.' + pg_version_major.to_string(),
+  link_args: export_fmt.format(export_file.full_path()),
+  link_depends: export_file,
+  kwargs: default_lib_args,
+)
+
+pkgconfig.generate(
+  ecpglib.get_shared_lib(),
+  description: 'PostgreSQL libecpg library',
+  url: pg_url,
+)
+
+subdir('po', if_found: libintl)
diff --git a/src/interfaces/ecpg/ecpglib/po/meson.build b/src/interfaces/ecpg/ecpglib/po/meson.build
new file mode 100644
index 00000000000..246e399ebd3
--- /dev/null
+++ b/src/interfaces/ecpg/ecpglib/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('ecpglib' + '6' + '-' + pg_version_major.to_string())
diff --git a/src/interfaces/ecpg/include/meson.build b/src/interfaces/ecpg/include/meson.build
new file mode 100644
index 00000000000..c95d0455b9a
--- /dev/null
+++ b/src/interfaces/ecpg/include/meson.build
@@ -0,0 +1,51 @@
+ecpg_inc = include_directories('.')
+
+ecpg_conf_keys = [
+  'ENABLE_THREAD_SAFETY',
+  'HAVE_INT64',
+  'HAVE_LONG_INT_64',
+  'HAVE_LONG_LONG_INT_64',
+  'PG_USE_STDBOOL',
+]
+
+ecpg_conf_data = configuration_data()
+
+foreach key : ecpg_conf_keys
+  if cdata.has(key)
+    ecpg_conf_data.set(key, cdata.get(key))
+  endif
+endforeach
+
+ecpg_config_h = configure_file(
+  output: 'ecpg_config.h',
+  configuration: ecpg_conf_data,
+  install_dir: dir_include,
+)
+configure_files += ecpg_config_h
+
+generated_sources_ac += {'src/interfaces/ecpg/include': ['stamp-h']}
+
+install_headers(
+  'ecpg_informix.h',
+  'ecpgerrno.h',
+  'ecpglib.h',
+  'ecpgtype.h',
+  'pgtypes.h',
+  'pgtypes_date.h',
+  'pgtypes_error.h',
+  'pgtypes_interval.h',
+  'pgtypes_numeric.h',
+  'pgtypes_timestamp.h',
+  'sql3types.h',
+  'sqlca.h',
+  'sqlda.h',
+  'sqlda-compat.h',
+  'sqlda-native.h',
+)
+
+install_headers(
+  'datetime.h',
+  'decimal.h',
+  'sqltypes.h',
+  install_dir: dir_include_pkg / 'informix' / 'esql',
+)
diff --git a/src/interfaces/ecpg/meson.build b/src/interfaces/ecpg/meson.build
new file mode 100644
index 00000000000..ffbe84c0e88
--- /dev/null
+++ b/src/interfaces/ecpg/meson.build
@@ -0,0 +1,5 @@
+subdir('include')
+subdir('pgtypeslib')
+subdir('ecpglib')
+subdir('compatlib')
+subdir('preproc')
diff --git a/src/interfaces/ecpg/pgtypeslib/meson.build b/src/interfaces/ecpg/pgtypeslib/meson.build
new file mode 100644
index 00000000000..40724420921
--- /dev/null
+++ b/src/interfaces/ecpg/pgtypeslib/meson.build
@@ -0,0 +1,29 @@
+ecpg_pgtypes_sources = files(
+  'common.c',
+  'datetime.c',
+  'dt_common.c',
+  'interval.c',
+  'numeric.c',
+  'timestamp.c',
+)
+
+export_file = custom_target('libpq.exports', kwargs: gen_export_kwargs)
+
+ecpg_pgtypes = both_libraries('libpgtypes',
+  ecpg_pgtypes_sources,
+  include_directories: ['.', ecpg_inc, postgres_inc],
+  c_args: ['-DSO_MAJOR_VERSION=3'],
+  dependencies: [frontend_shlib_code],
+  version: '3.' + pg_version_major.to_string(),
+  soversion: host_system != 'windows' ? '3' : '',
+  darwin_versions: ['3', '3.' + pg_version_major.to_string()],
+  link_args: export_fmt.format(export_file.full_path()),
+  link_depends: export_file,
+  kwargs: default_lib_args,
+)
+
+pkgconfig.generate(
+  ecpg_pgtypes.get_shared_lib(),
+  description: 'PostgreSQL libpgtypes library',
+  url: pg_url,
+)
diff --git a/src/interfaces/ecpg/preproc/meson.build b/src/interfaces/ecpg/preproc/meson.build
new file mode 100644
index 00000000000..cb62adace30
--- /dev/null
+++ b/src/interfaces/ecpg/preproc/meson.build
@@ -0,0 +1,104 @@
+ecpg_sources = files(
+  '../ecpglib/typename.c',
+  'c_keywords.c',
+  'descriptor.c',
+  'ecpg.c',
+  'ecpg_keywords.c',
+  'keywords.c',
+  'output.c',
+  'parser.c',
+  'type.c',
+  'variable.c',
+)
+
+pgc = custom_target('pgc.c',
+  input: ['pgc.l'],
+  output: ['pgc.c'],
+  command: [flex_cmd, '@INPUT@'],
+)
+generated_sources += pgc
+ecpg_sources += pgc
+
+ecpg_files = [
+  'ecpg.addons',
+  'ecpg.header',
+  'ecpg.tokens',
+  'ecpg.trailer',
+  'ecpg.type',
+]
+
+preproc_y = custom_target('preproc.y',
+  input: [
+    '../../../backend/parser/gram.y',
+    ecpg_files,
+  ],
+  output: ['preproc.y'],
+  command: [
+    perl, files('parse.pl'),
+    '--srcdir', '@CURRENT_SOURCE_DIR@',
+    '--parser', '@INPUT0@',
+    '--output', '@OUTPUT0@',
+  ],
+)
+generated_sources += preproc_y
+
+check_rules = custom_target('preproc.y.check_rules',
+  input: [
+    '../../../backend/parser/gram.y',
+    ecpg_files,
+  ],
+  output: 'preproc.y.check_rules',
+  command: [
+    perl, files('check_rules.pl'),
+    '--srcdir', '@CURRENT_SOURCE_DIR@',
+    '--parser', '@INPUT0@',
+    '--stamp', '@OUTPUT0@',
+  ],
+)
+
+preproc = custom_target('preproc.c',
+  input: [preproc_y],
+  output: ['preproc.c', 'preproc.h'],
+  depends: check_rules,
+  command: [bison_cmd, '-d', '@INPUT@'],
+)
+generated_sources += preproc.to_list()
+ecpg_sources += preproc
+
+c_kwlist = custom_target('c_kwlist_d.h',
+  input: ['c_kwlist.h'],
+  output: ['c_kwlist_d.h'],
+  command: [
+    perl,
+    '-I', '@SOURCE_ROOT@/src/tools',
+    '@SOURCE_ROOT@/src/tools/gen_keywordlist.pl',
+    '--output', '@OUTDIR@',
+    '--varname', 'ScanCKeywords',
+    '--no-case-fold', '@INPUT0@',
+  ],
+)
+generated_sources += c_kwlist
+ecpg_sources += c_kwlist
+
+ecpg_kwlist = custom_target('ecpg_kwlist_d.h',
+  input: ['ecpg_kwlist.h'],
+  output: ['ecpg_kwlist_d.h'],
+  command: [
+    perl, '-I',
+    '@SOURCE_ROOT@/src/tools',
+    '@SOURCE_ROOT@/src/tools/gen_keywordlist.pl',
+    '--output', '@OUTDIR@',
+    '--varname', 'ScanECPGKeywords', '@INPUT0@',
+  ]
+)
+generated_sources += ecpg_kwlist
+ecpg_sources += ecpg_kwlist
+
+ecpg_exe = executable('ecpg',
+  ecpg_sources,
+  include_directories: ['.', ecpg_inc, postgres_inc, libpq_inc],
+  dependencies: [frontend_shlib_code],
+  kwargs: default_bin_args,
+)
+
+subdir('po', if_found: libintl)
diff --git a/src/interfaces/ecpg/preproc/po/meson.build b/src/interfaces/ecpg/preproc/po/meson.build
new file mode 100644
index 00000000000..d73b05afd5e
--- /dev/null
+++ b/src/interfaces/ecpg/preproc/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('ecpg-' + pg_version_major.to_string())
diff --git a/src/interfaces/ecpg/test/compat_informix/meson.build b/src/interfaces/ecpg/test/compat_informix/meson.build
new file mode 100644
index 00000000000..6bb0d980761
--- /dev/null
+++ b/src/interfaces/ecpg/test/compat_informix/meson.build
@@ -0,0 +1,31 @@
+pgc_files = [
+  'charfuncs',
+  'dec_test',
+  'describe',
+  'rfmtdate',
+  'rfmtlong',
+  'rnull',
+  'sqlda',
+  'test_informix',
+  'test_informix2',
+]
+
+pgc_extra_flags = {
+  'rnull': ['-r', 'no_indicator',],
+}
+
+foreach pgc_file : pgc_files
+  exe_input = custom_target('@0@.c'.format(pgc_file),
+    input: '@0@.pgc'.format(pgc_file),
+    command: ecpg_preproc_test_command_start +
+      ['-C', 'INFORMIX',] +
+      pgc_extra_flags.get(pgc_file, []) +
+      ecpg_preproc_test_command_end,
+    kwargs: ecpg_preproc_kw,
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/compat_oracle/meson.build b/src/interfaces/ecpg/test/compat_oracle/meson.build
new file mode 100644
index 00000000000..2e8794ba386
--- /dev/null
+++ b/src/interfaces/ecpg/test/compat_oracle/meson.build
@@ -0,0 +1,20 @@
+pgc_files = [
+  'char_array',
+]
+
+foreach pgc_file : pgc_files
+  exe_input = custom_target('@0@.c'.format(pgc_file),
+    input: '@0@.pgc'.format(pgc_file),
+    output: '@BASENAME@.c',
+    command: ecpg_preproc_test_command_start +
+      ['-C', 'ORACLE',] +
+      ecpg_preproc_test_command_end,
+    install: false,
+    build_by_default: false,
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/connect/meson.build b/src/interfaces/ecpg/test/connect/meson.build
new file mode 100644
index 00000000000..0b1c3593146
--- /dev/null
+++ b/src/interfaces/ecpg/test/connect/meson.build
@@ -0,0 +1,20 @@
+pgc_files = [
+  'test1',
+  'test2',
+  'test3',
+  'test4',
+  'test5',
+]
+
+foreach pgc_file : pgc_files
+  exe_input = custom_target('@0@.c'.format(pgc_file),
+    input: '@0@.pgc'.format(pgc_file),
+    command: ecpg_preproc_test_command_start + ecpg_preproc_test_command_end,
+    kwargs: ecpg_preproc_kw,
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/meson.build b/src/interfaces/ecpg/test/meson.build
new file mode 100644
index 00000000000..fd286938723
--- /dev/null
+++ b/src/interfaces/ecpg/test/meson.build
@@ -0,0 +1,77 @@
+pg_regress_ecpg_sources = pg_regress_c + files(
+  'pg_regress_ecpg.c',
+)
+
+pg_regress_ecpg = executable('pg_regress_ecpg',
+  pg_regress_ecpg_sources,
+  c_args: pg_regress_cflags,
+  include_directories: [pg_regress_inc, include_directories('.')],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args + {
+    'install': false
+  },
+)
+
+# create .c files and executables from .pgc files
+ecpg_test_exec_kw = {
+  'dependencies': [frontend_code, libpq],
+  'include_directories': [ecpg_inc],
+  'link_with': [ecpglib, ecpg_compat, ecpg_pgtypes],
+  'build_by_default': false,
+  'install': false,
+}
+
+ecpg_preproc_kw = {
+  'output': '@BASENAME@.c',
+  'install': false,
+  'build_by_default': false,
+}
+
+ecpg_preproc_test_command_start = [
+  ecpg_exe,
+  '--regression',
+  '-I@CURRENT_SOURCE_DIR@',
+  '-I@SOURCE_ROOT@' + '/src/interfaces/ecpg/include/',
+]
+ecpg_preproc_test_command_end = [
+  '-o', '@OUTPUT@', '@INPUT@'
+]
+
+ecpg_test_dependencies = []
+
+subdir('compat_informix')
+subdir('compat_oracle')
+subdir('connect')
+subdir('pgtypeslib')
+subdir('preproc')
+subdir('sql')
+subdir('thread')
+
+ecpg_test_files = files(
+  'ecpg_schedule',
+)
+
+ecpg_regress_args = [
+  '--dbname=ecpg1_regression,ecpg2_regression',
+  '--create-role=regress_ecpg_user1,regress_ecpg_user2',
+  '--encoding=SQL_ASCII',
+]
+
+tests += {
+  'name': 'ecpg',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'test_runner': pg_regress_ecpg,
+    'expecteddir': meson.current_source_dir(),
+    'inputdir': meson.current_build_dir(),
+    'schedule': ecpg_test_files,
+    'sql': [
+      'sql/twophase',
+    ],
+    'test_kwargs': {
+      'depends': meson.is_cross_build() ? [] : ecpg_test_dependencies,
+    },
+    'regress_args': ecpg_regress_args,
+  },
+}
diff --git a/src/interfaces/ecpg/test/pgtypeslib/meson.build b/src/interfaces/ecpg/test/pgtypeslib/meson.build
new file mode 100644
index 00000000000..2957f12abfc
--- /dev/null
+++ b/src/interfaces/ecpg/test/pgtypeslib/meson.build
@@ -0,0 +1,21 @@
+pgc_files = [
+  'dt_test',
+  'dt_test2',
+  'num_test',
+  'num_test2',
+  'nan_test',
+]
+
+foreach pgc_file : pgc_files
+  exe_input = custom_target('@0@.c'.format(pgc_file),
+    input: '@0@.pgc'.format(pgc_file),
+    command: ecpg_preproc_test_command_start +
+      ecpg_preproc_test_command_end,
+    kwargs: ecpg_preproc_kw,
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/preproc/meson.build b/src/interfaces/ecpg/test/preproc/meson.build
new file mode 100644
index 00000000000..0608df2f2a2
--- /dev/null
+++ b/src/interfaces/ecpg/test/preproc/meson.build
@@ -0,0 +1,37 @@
+pgc_files = [
+  'array_of_struct',
+  'autoprep',
+  'comment',
+  'cursor',
+  'define',
+  'init',
+  'outofscope',
+  'pointer_to_struct',
+  'strings',
+  'type',
+  'variable',
+  'whenever',
+  'whenever_do_continue',
+]
+
+pgc_extra_flags = {
+  'array_of_struct': ['-c'],
+  'pointer_to_struct': ['-c'],
+  'autoprep': ['-r', 'prepare'],
+  'strings': ['-i'],
+}
+
+foreach pgc_file : pgc_files
+  exe_input = custom_target('@0@.c'.format(pgc_file),
+    input: '@0@.pgc'.format(pgc_file),
+    command: ecpg_preproc_test_command_start +
+      pgc_extra_flags.get(pgc_file, []) +
+      ecpg_preproc_test_command_end,
+    kwargs: ecpg_preproc_kw,
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/sql/meson.build b/src/interfaces/ecpg/test/sql/meson.build
new file mode 100644
index 00000000000..bec7d4ed8f6
--- /dev/null
+++ b/src/interfaces/ecpg/test/sql/meson.build
@@ -0,0 +1,46 @@
+pgc_files = [
+  'array',
+  'binary',
+  'bytea',
+  'code100',
+  'copystdout',
+  'createtableas',
+  'declare',
+  'define',
+  'desc',
+  'describe',
+  'dynalloc',
+  'dynalloc2',
+  'dyntest',
+  'execute',
+  'fetch',
+  'func',
+  'indicators',
+  'insupd',
+  'oldexec',
+  'parser',
+  'prepareas',
+  'quote',
+  'show',
+  'sqlda',
+  'twophase',
+]
+
+pgc_extra_flags = {
+  'oldexec': ['-r', 'questionmarks'],
+}
+
+foreach pgc_file : pgc_files
+  exe_input = custom_target('@0@.c'.format(pgc_file),
+    input: '@0@.pgc'.format(pgc_file),
+    command: ecpg_preproc_test_command_start +
+      pgc_extra_flags.get(pgc_file, []) +
+      ecpg_preproc_test_command_end,
+    kwargs: ecpg_preproc_kw,
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/thread/meson.build b/src/interfaces/ecpg/test/thread/meson.build
new file mode 100644
index 00000000000..2f1629e266b
--- /dev/null
+++ b/src/interfaces/ecpg/test/thread/meson.build
@@ -0,0 +1,21 @@
+pgc_files = [
+  'thread_implicit',
+  'thread',
+  'prep',
+  'descriptor',
+  'alloc',
+]
+
+foreach pgc_file : pgc_files
+  exe_input = custom_target('@0@.c'.format(pgc_file),
+    input: '@0@.pgc'.format(pgc_file),
+    command: ecpg_preproc_test_command_start +
+      ecpg_preproc_test_command_end,
+    kwargs: ecpg_preproc_kw,
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw + {'dependencies': [frontend_code, libpq, thread_dep,]},
+  )
+endforeach
diff --git a/src/interfaces/meson.build b/src/interfaces/meson.build
new file mode 100644
index 00000000000..73fffbee394
--- /dev/null
+++ b/src/interfaces/meson.build
@@ -0,0 +1,2 @@
+# NB: libpq is entered directly from the toplevel meson file
+subdir('ecpg')
diff --git a/doc/src/sgml/meson.build b/doc/src/sgml/meson.build
new file mode 100644
index 00000000000..77fce3e995c
--- /dev/null
+++ b/doc/src/sgml/meson.build
@@ -0,0 +1,262 @@
+docs = []
+alldocs = []
+doc_generated = []
+
+xmllint = find_program('xmllint', native: true, required: false)
+pandoc = find_program('pandoc', native: true, required: false)
+xsltproc = find_program('xsltproc', native: true, required: false)
+fop = find_program('fop', native: true, required: false)
+
+
+version_sgml = configure_file(
+  input: 'version.sgml.in',
+  output: 'version.sgml',
+  configuration: cdata,
+)
+configure_files += version_sgml
+
+doc_generated += custom_target('features-supported.sgml',
+  input: files(
+    '../../../src/backend/catalog/sql_feature_packages.txt',
+    '../../../src/backend/catalog/sql_features.txt',
+  ),
+  output: 'features-supported.sgml',
+  command: [perl, files('mk_feature_tables.pl'), 'YES', '@INPUT@'],
+  build_by_default: false,
+  install: false,
+  capture: true,
+)
+
+doc_generated += custom_target('features-unsupported.sgml',
+  input: files(
+    '../../../src/backend/catalog/sql_feature_packages.txt',
+    '../../../src/backend/catalog/sql_features.txt',
+  ),
+  output: 'features-unsupported.sgml',
+  command: [perl, files('mk_feature_tables.pl'), 'NO', '@INPUT@'],
+  build_by_default: false,
+  install: false,
+  capture: true,
+)
+
+doc_generated += custom_target('errcodes-table.sgml',
+  input: files(
+    '../../../src/backend/utils/errcodes.txt'),
+  output: 'errcodes-table.sgml',
+  command: [perl, files('generate-errcodes-table.pl'), '@INPUT@'],
+  build_by_default: false,
+  install: false,
+  capture: true,
+)
+
+# FIXME: this actually has further inputs, adding depfile support to
+# generate-keywords-table.pl is probably the best way to address that
+# robustly.
+doc_generated += custom_target('keywords-table.sgml',
+  input: files(
+    '../../../src/include/parser/kwlist.h'),
+  output: 'keywords-table.sgml',
+  command: [perl, files('generate-keywords-table.pl'), '@CURRENT_SOURCE_DIR@'],
+  build_by_default: false,
+  install: false,
+  capture: true,
+)
+
+# For everything else we need at least xmllint
+if not xmllint.found()
+  subdir_done()
+endif
+
+# Compute validity just once
+postgres_sgml_valid = custom_target('postgres.sgml.valid',
+  input: 'postgres.sgml',
+  output: 'postgres.sgml.valid',
+  command: [xmllint, '--noout', '--valid', '--path', '@OUTDIR@', '@INPUT@'],
+  depends: doc_generated,
+  build_by_default: true,
+  capture: true,
+)
+
+#
+# Full documentation as html, text
+#
+if xsltproc.found()
+  xsltproc_flags = [
+    '--stringparam', 'pg.version', pg_version,
+    '--param', 'website.stylesheet', '1'
+  ]
+
+
+  # FIXME: Should use a wrapper around xsltproc --load-trace to compute a
+  # depfile
+  html = custom_target('html',
+    input: ['stylesheet.xsl', 'postgres.sgml'],
+    output: 'html',
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTDIR@/', xsltproc_flags, '@INPUT@'],
+    build_by_default: false,
+  )
+  alldocs += html
+
+  # build multi-page html docs as part of docs target
+  docs += html
+
+  html_help = custom_target('html_help',
+    input: ['stylesheet-hh.xsl', 'postgres.sgml'],
+    output: 'htmlhelp',
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTDIR@/', xsltproc_flags, '@INPUT@'],
+    build_by_default: false,
+  )
+  alldocs += html_help
+
+
+  # single-page HTML
+  postgres_html = custom_target('postgres.html',
+    input: ['stylesheet-html-nochunk.xsl', 'postgres.sgml'],
+    output: 'postgres.html',
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTPUT@', xsltproc_flags, '@INPUT@'],
+    build_by_default: false,
+  )
+  alldocs += postgres_html
+
+  # single-page text
+  if pandoc.found()
+    postgres_txt = custom_target('postgres.txt',
+      input: [postgres_html],
+      output: 'postgres.txt',
+      depends: doc_generated + [postgres_sgml_valid],
+      command: [pandoc, '-t', 'plain', '-o', '@OUTPUT@', '@INPUT@'],
+      build_by_default: false,
+    )
+    alldocs += postgres_txt
+  endif
+endif
+
+
+#
+# INSTALL in html, text
+#
+if xsltproc.found()
+  install_xml = custom_target('INSTALL.xml',
+    input: ['standalone-profile.xsl', 'standalone-install.xml'],
+    output: 'INSTALL.xml',
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTPUT@', xsltproc_flags, '--xinclude', '@INPUT@'],
+    build_by_default: false,
+  )
+  install_html = custom_target('INSTALL.html',
+    input: ['stylesheet-text.xsl', install_xml],
+    output: 'INSTALL.html',
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTPUT@', xsltproc_flags, '@INPUT@'],
+    build_by_default: false,
+  )
+  alldocs += install_html
+
+  if pandoc.found()
+    # XXX: Makefile does an iconv translit here, but unclear why?
+    install = custom_target('INSTALL',
+      input: [install_html],
+      output: 'INSTALL',
+      depends: doc_generated + [postgres_sgml_valid],
+      command: [pandoc, '-t', 'plain', '-o', '@OUTPUT@', '@INPUT@'],
+      build_by_default: false,
+    )
+    alldocs += install
+  endif
+
+endif
+
+
+#
+# Man pages
+#
+if xsltproc.found()
+  # FIXME: implement / consider sqlmansectnum logic
+  man = custom_target('man',
+    input: ['stylesheet-man.xsl', 'postgres.sgml'],
+    output: ['man1', 'man3', 'man7'],
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTDIR@/', xsltproc_flags, '@INPUT@'],
+    build_by_default: false,
+  )
+
+  # build by default as part of docs target
+  docs += man
+endif
+
+
+#
+# Full documentation as PDF
+#
+if fop.found() and xsltproc.found()
+  xsltproc_fo_flags = xsltproc_flags + ['--stringparam', 'img.src.path', meson.current_source_dir() + '/']
+
+  foreach format, detail: {'A4': 'A4', 'US': 'USletter'}
+    postgres_x_fo_f = 'postgres-@0@.fo'.format(format)
+    postgres_x_pdf_f = 'postgres-@0@.pdf'.format(format)
+
+    postgres_x_fo = custom_target(postgres_x_fo_f,
+      input: ['stylesheet-fo.xsl', 'postgres.sgml'],
+      output: [postgres_x_fo_f],
+      depends: doc_generated + [postgres_sgml_valid],
+      command: [xsltproc, '--path', '@OUTDIR@/', xsltproc_fo_flags,
+                '--stringparam', 'paper.type', detail,
+                '-o', '@OUTPUT@', '@INPUT@'],
+      build_by_default: false,
+    )
+
+    postgres_x_pdf = custom_target(postgres_x_pdf_f,
+      input: [postgres_x_fo],
+      output: [postgres_x_pdf_f],
+      command: [fop, '-fo', '@INPUT@', '-pdf', '@OUTPUT@'],
+      build_by_default: false,
+    )
+    alldocs += postgres_x_pdf
+  endforeach
+endif
+
+
+#
+# epub
+#
+
+# This was previously implemented using dbtoepub - but that doesn't seem to
+# support running in build != source directory (i.e. VPATH builds already
+# weren't supported).
+if pandoc.found() and xsltproc.found()
+  # XXX: Wasn't able to make pandoc successfully resolve entities
+  # XXX: Perhaps we should just make all targets use this, to avoid repeatedly
+  # building whole thing? It's comparatively fast though.
+  postgres_full_xml = custom_target('postgres-full.xml',
+    input: ['resolv.xsl', 'postgres.sgml'],
+    output: ['postgres-full.xml'],
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@/', xsltproc_flags,
+              '-o', '@OUTPUT@', '@INPUT@'],
+    build_by_default: false,
+  )
+
+  postgres_epub = custom_target('postgres.epub',
+    input: [postgres_full_xml],
+    output: 'postgres.epub',
+    command: [pandoc, '-f', 'docbook', '-t', 'epub', '-o', '@OUTPUT@', '--resource-path=@CURRENT_SOURCE_DIR@',
+              '@INPUT@'],
+    build_by_default: false,
+  )
+  alldocs += postgres_epub
+endif
+
+if docs.length() == 0
+  run_target('docs', command: [missing, 'xsltproc'])
+else
+  alias_target('docs', docs)
+endif
+
+if alldocs.length() == 0
+  run_target('alldocs', command: [missing, 'xsltproc'])
+else
+  alias_target('alldocs', alldocs)
+endif
diff --git a/doc/src/sgml/resolv.xsl b/doc/src/sgml/resolv.xsl
new file mode 100644
index 00000000000..c69ba714dab
--- /dev/null
+++ b/doc/src/sgml/resolv.xsl
@@ -0,0 +1,7 @@
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+  <xsl:template match="@*|node()">
+    <xsl:copy>
+      <xsl:apply-templates select="@*|node()"/>
+    </xsl:copy>
+  </xsl:template>
+</xsl:stylesheet>
diff --git a/doc/src/sgml/version.sgml.in b/doc/src/sgml/version.sgml.in
new file mode 100644
index 00000000000..fa5ff343f40
--- /dev/null
+++ b/doc/src/sgml/version.sgml.in
@@ -0,0 +1,2 @@
+<!ENTITY version @PG_VERSION@>
+<!ENTITY majorversion @PG_MAJORVERSION@>
diff --git a/src/test/authentication/meson.build b/src/test/authentication/meson.build
new file mode 100644
index 00000000000..2374028cbda
--- /dev/null
+++ b/src/test/authentication/meson.build
@@ -0,0 +1,11 @@
+tests += {
+  'name': 'authentication',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_password.pl',
+      't/002_saslprep.pl',
+    ],
+  },
+}
diff --git a/src/test/icu/meson.build b/src/test/icu/meson.build
new file mode 100644
index 00000000000..5a4f53f37ff
--- /dev/null
+++ b/src/test/icu/meson.build
@@ -0,0 +1,11 @@
+tests += {
+  'name': 'icu',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/010_database.pl',
+    ],
+    'env': {'with_icu': icu.found() ? 'yes' : 'no'},
+  },
+}
diff --git a/src/test/isolation/meson.build b/src/test/isolation/meson.build
new file mode 100644
index 00000000000..0aefb5a112c
--- /dev/null
+++ b/src/test/isolation/meson.build
@@ -0,0 +1,55 @@
+# pg_regress_c helpfully provided by regress/meson.build
+
+isolation_sources = pg_regress_c + files(
+  'isolation_main.c',
+)
+
+# see src/backend/replication/meson.build for depend logic
+spec_scanner = custom_target('specscanner',
+  input: files('specscanner.l'),
+  output: ['specscanner.c'],
+  command: [flex_cmd, '@INPUT@'],
+)
+generated_sources += spec_scanner
+
+isolationtester_sources = files('isolationtester.c')
+spec_parser = custom_target('specparse',
+  input: 'specparse.y',
+  output: 'specparse.c',
+  depends: spec_scanner,
+  command: [bison_cmd, '@INPUT@'],
+)
+isolationtester_sources += spec_parser
+generated_sources += spec_parser
+
+pg_isolation_regress = executable('pg_isolation_regress',
+  isolation_sources,
+  c_args: pg_regress_cflags,
+  include_directories: [pg_regress_inc],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args + {
+    'install_dir': dir_pgxs / 'src/test/isolation',
+  },
+)
+
+isolationtester = executable('isolationtester',
+  isolationtester_sources,
+  include_directories: include_directories('.'),
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args + {
+    'install_dir': dir_pgxs / 'src/test/isolation',
+  },
+)
+
+tests += {
+  'name': 'main',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'isolation': {
+    'schedule': files('isolation_schedule'),
+    'test_kwargs': {
+      'priority': 40,
+      'timeout': 1000,
+    },
+  },
+}
diff --git a/src/test/kerberos/meson.build b/src/test/kerberos/meson.build
new file mode 100644
index 00000000000..7e2b6733fcc
--- /dev/null
+++ b/src/test/kerberos/meson.build
@@ -0,0 +1,15 @@
+tests += {
+  'name': 'kerberos',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'test_kwargs': {'priority': 40}, # kerberos tests are slow, start early
+    'tests': [
+      't/001_auth.pl',
+    ],
+    'env': {
+      'with_gssapi': gssapi.found() ? 'yes' : 'no',
+      'with_krb_srvnam': 'postgres',
+    },
+  },
+}
diff --git a/src/test/ldap/meson.build b/src/test/ldap/meson.build
new file mode 100644
index 00000000000..2211bd5e3ec
--- /dev/null
+++ b/src/test/ldap/meson.build
@@ -0,0 +1,11 @@
+tests += {
+  'name': 'ldap',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_auth.pl',
+    ],
+    'env': {'with_ldap': ldap.found() ? 'yes' : 'no'},
+  },
+}
diff --git a/src/test/meson.build b/src/test/meson.build
new file mode 100644
index 00000000000..b86a0f3889b
--- /dev/null
+++ b/src/test/meson.build
@@ -0,0 +1,23 @@
+subdir('regress')
+subdir('isolation')
+
+subdir('authentication')
+subdir('recovery')
+subdir('subscription')
+subdir('modules')
+
+if ssl.found()
+  subdir('ssl')
+endif
+
+if ldap.found()
+  subdir('ldap')
+endif
+
+if gssapi.found()
+  subdir('kerberos')
+endif
+
+if icu.found()
+  subdir('icu')
+endif
diff --git a/src/test/modules/brin/meson.build b/src/test/modules/brin/meson.build
new file mode 100644
index 00000000000..58254d093a4
--- /dev/null
+++ b/src/test/modules/brin/meson.build
@@ -0,0 +1,16 @@
+tests += {
+  'name': 'brin',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'isolation': {
+    'specs': [
+      'summarization-and-inprogress-insertion',
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/01_workitems.pl',
+      't/02_wal_consistency.pl',
+    ],
+  },
+}
diff --git a/src/test/modules/commit_ts/meson.build b/src/test/modules/commit_ts/meson.build
new file mode 100644
index 00000000000..60cb12164d2
--- /dev/null
+++ b/src/test/modules/commit_ts/meson.build
@@ -0,0 +1,18 @@
+tests += {
+  'name': 'commit_ts',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'commit_timestamp',
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/001_base.pl',
+      't/002_standby.pl',
+      't/003_standby_2.pl',
+      't/004_restart.pl',
+    ],
+  },
+}
diff --git a/src/test/modules/delay_execution/meson.build b/src/test/modules/delay_execution/meson.build
new file mode 100644
index 00000000000..3ce0ee2e2f6
--- /dev/null
+++ b/src/test/modules/delay_execution/meson.build
@@ -0,0 +1,17 @@
+# FIXME: prevent install during main install, but not during test :/
+delay_execution = shared_module('delay_execution',
+  ['delay_execution.c'],
+  kwargs: pg_mod_args,
+)
+
+tests += {
+  'name': 'delay_execution',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'isolation': {
+    'specs': [
+      'partition-addition',
+      'partition-removal-1',
+    ],
+  },
+}
diff --git a/src/test/modules/dummy_index_am/meson.build b/src/test/modules/dummy_index_am/meson.build
new file mode 100644
index 00000000000..77a4377dc21
--- /dev/null
+++ b/src/test/modules/dummy_index_am/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+dummy_index_am = shared_module('dummy_index_am',
+  ['dummy_index_am.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'dummy_index_am.control',
+  'dummy_index_am--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'dummy_index_am',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'reloptions',
+    ],
+  },
+}
diff --git a/src/test/modules/dummy_seclabel/meson.build b/src/test/modules/dummy_seclabel/meson.build
new file mode 100644
index 00000000000..7d320eb7935
--- /dev/null
+++ b/src/test/modules/dummy_seclabel/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+dummy_seclabel = shared_module('dummy_seclabel',
+  ['dummy_seclabel.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'dummy_seclabel.control',
+  'dummy_seclabel--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'dummy_seclabel',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'dummy_seclabel',
+    ],
+  },
+}
diff --git a/src/test/modules/libpq_pipeline/meson.build b/src/test/modules/libpq_pipeline/meson.build
new file mode 100644
index 00000000000..fc07f77faf2
--- /dev/null
+++ b/src/test/modules/libpq_pipeline/meson.build
@@ -0,0 +1,20 @@
+libpq_pipeline = executable('libpq_pipeline',
+  files(
+    'libpq_pipeline.c',
+  ),
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args + {
+    'install': false,
+  },
+)
+
+tests += {
+  'name': 'libpq_pipeline',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_libpq_pipeline.pl',
+    ],
+  },
+}
diff --git a/src/test/modules/meson.build b/src/test/modules/meson.build
new file mode 100644
index 00000000000..a80e6e2ce29
--- /dev/null
+++ b/src/test/modules/meson.build
@@ -0,0 +1,27 @@
+subdir('brin')
+subdir('commit_ts')
+subdir('delay_execution')
+subdir('dummy_index_am')
+subdir('dummy_seclabel')
+subdir('libpq_pipeline')
+subdir('plsample')
+subdir('snapshot_too_old')
+subdir('spgist_name_ops')
+subdir('ssl_passphrase_callback')
+subdir('test_bloomfilter')
+subdir('test_ddl_deparse')
+subdir('test_extensions')
+subdir('test_ginpostinglist')
+subdir('test_integerset')
+subdir('test_lfind')
+subdir('test_misc')
+subdir('test_oat_hooks')
+subdir('test_parser')
+subdir('test_pg_dump')
+subdir('test_predtest')
+subdir('test_rbtree')
+subdir('test_regex')
+subdir('test_rls_hooks')
+subdir('test_shm_mq')
+subdir('unsafe_tests')
+subdir('worker_spi')
diff --git a/src/test/modules/plsample/meson.build b/src/test/modules/plsample/meson.build
new file mode 100644
index 00000000000..323427858f0
--- /dev/null
+++ b/src/test/modules/plsample/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+plsample = shared_module('plsample',
+  ['plsample.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'plsample.control',
+  'plsample--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'plsample',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'plsample',
+    ],
+  },
+}
diff --git a/src/test/modules/snapshot_too_old/meson.build b/src/test/modules/snapshot_too_old/meson.build
new file mode 100644
index 00000000000..efd3f1f113b
--- /dev/null
+++ b/src/test/modules/snapshot_too_old/meson.build
@@ -0,0 +1,14 @@
+tests += {
+  'name': 'snapshot_too_old',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'isolation': {
+    'test_kwargs': {'priority': 40}, # sto tests are slow, start early
+    'specs': [
+      'sto_using_cursor',
+      'sto_using_select',
+      'sto_using_hash_index',
+    ],
+    'regress_args': ['--temp-config', files('sto.conf')],
+  },
+}
diff --git a/src/test/modules/spgist_name_ops/meson.build b/src/test/modules/spgist_name_ops/meson.build
new file mode 100644
index 00000000000..676f2a258cb
--- /dev/null
+++ b/src/test/modules/spgist_name_ops/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+spgist_name_ops = shared_module('spgist_name_ops',
+  ['spgist_name_ops.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'spgist_name_ops.control',
+  'spgist_name_ops--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'spgist_name_ops',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'spgist_name_ops',
+    ],
+  },
+}
diff --git a/src/test/modules/ssl_passphrase_callback/meson.build b/src/test/modules/ssl_passphrase_callback/meson.build
new file mode 100644
index 00000000000..5913c530cd6
--- /dev/null
+++ b/src/test/modules/ssl_passphrase_callback/meson.build
@@ -0,0 +1,47 @@
+if not ssl.found()
+  subdir_done()
+endif
+
+# FIXME: prevent install during main install, but not during test :/
+ssl_passphrase_callback = shared_module('ssl_passphrase_func',
+  ['ssl_passphrase_func.c'],
+  kwargs: pg_mod_args + {
+    'dependencies': [ssl, pg_mod_args['dependencies']],
+  },
+)
+
+# Targets to generate or remove the ssl certificate and key. Need to be copied
+# to the source afterwards. Normally not needed.
+
+openssl = find_program('openssl', native: true, required: false)
+
+if openssl.found()
+  cert = custom_target('server.crt',
+    output: ['server.crt', 'server.ckey'],
+    command: [openssl, 'req', '-new', '-x509', '-days', '10000', '-nodes', '-out', '@OUTPUT0@',
+      '-keyout', '@OUTPUT1@', '-subj', '/CN=localhost'],
+    build_by_default: false,
+    install: false,
+  )
+
+  # needs to agree with what's in the test script
+  pass = 'FooBaR1'
+
+  enccert = custom_target('server.key',
+    input: [cert[1]],
+    output: ['server.key'],
+    command: [openssl, 'rsa', '-aes256', '-in', '@INPUT0@', '-out', '@OUTPUT0@', '-passout', 'pass:@0@'.format(pass)]
+  )
+endif
+
+tests += {
+  'name': 'ssl_passphrase_callback',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_testfunc.pl',
+    ],
+    'env': {'with_ssl': 'openssl'},
+  },
+}
diff --git a/src/test/modules/test_bloomfilter/meson.build b/src/test/modules/test_bloomfilter/meson.build
new file mode 100644
index 00000000000..6861ae38116
--- /dev/null
+++ b/src/test/modules/test_bloomfilter/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_bloomfilter = shared_module('test_bloomfilter',
+  ['test_bloomfilter.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_bloomfilter.control',
+  'test_bloomfilter--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_bloomfilter',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_bloomfilter',
+    ],
+  },
+}
diff --git a/src/test/modules/test_ddl_deparse/meson.build b/src/test/modules/test_ddl_deparse/meson.build
new file mode 100644
index 00000000000..367730e95db
--- /dev/null
+++ b/src/test/modules/test_ddl_deparse/meson.build
@@ -0,0 +1,42 @@
+# FIXME: prevent install during main install, but not during test :/
+test_ddl_deparse = shared_module('test_ddl_deparse',
+  ['test_ddl_deparse.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_ddl_deparse.control',
+  'test_ddl_deparse--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_ddl_deparse',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_ddl_deparse',
+      'create_extension',
+      'create_schema',
+      'create_type',
+      'create_conversion',
+      'create_domain',
+      'create_sequence_1',
+      'create_table',
+      'create_transform',
+      'alter_table',
+      'create_view',
+      'create_trigger',
+      'create_rule',
+      'comment_on',
+      'alter_function',
+      'alter_sequence',
+      'alter_ts_config',
+      'alter_type_enum',
+      'opfamily',
+      'defprivs',
+      'matviews',
+    ],
+  },
+}
diff --git a/src/test/modules/test_extensions/meson.build b/src/test/modules/test_extensions/meson.build
new file mode 100644
index 00000000000..e95a9f2e7eb
--- /dev/null
+++ b/src/test/modules/test_extensions/meson.build
@@ -0,0 +1,45 @@
+# FIXME: prevent install during main install, but not during test :/
+install_data(
+  'test_ext1--1.0.sql',
+  'test_ext1.control',
+  'test_ext2--1.0.sql',
+  'test_ext2.control',
+  'test_ext3--1.0.sql',
+  'test_ext3.control',
+  'test_ext4--1.0.sql',
+  'test_ext4.control',
+  'test_ext5--1.0.sql',
+  'test_ext5.control',
+  'test_ext6--1.0.sql',
+  'test_ext6.control',
+  'test_ext7--1.0--2.0.sql',
+  'test_ext7--1.0.sql',
+  'test_ext7.control',
+  'test_ext8--1.0.sql',
+  'test_ext8.control',
+  'test_ext_cine--1.0.sql',
+  'test_ext_cine--1.0--1.1.sql',
+  'test_ext_cine.control',
+  'test_ext_cor--1.0.sql',
+  'test_ext_cor.control',
+  'test_ext_cyclic1--1.0.sql',
+  'test_ext_cyclic1.control',
+  'test_ext_cyclic2--1.0.sql',
+  'test_ext_cyclic2.control',
+  'test_ext_evttrig--1.0--2.0.sql',
+  'test_ext_evttrig--1.0.sql',
+  'test_ext_evttrig.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_extensions',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_extensions',
+      'test_extdepend',
+    ],
+  },
+}
diff --git a/src/test/modules/test_ginpostinglist/meson.build b/src/test/modules/test_ginpostinglist/meson.build
new file mode 100644
index 00000000000..193c28a3da9
--- /dev/null
+++ b/src/test/modules/test_ginpostinglist/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_ginpostinglist = shared_module('test_ginpostinglist',
+  ['test_ginpostinglist.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_ginpostinglist.control',
+  'test_ginpostinglist--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_ginpostinglist',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_ginpostinglist',
+    ],
+  },
+}
diff --git a/src/test/modules/test_integerset/meson.build b/src/test/modules/test_integerset/meson.build
new file mode 100644
index 00000000000..b599dfc09e2
--- /dev/null
+++ b/src/test/modules/test_integerset/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_integerset = shared_module('test_integerset',
+  ['test_integerset.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_integerset.control',
+  'test_integerset--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_integerset',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_integerset',
+    ],
+  },
+}
diff --git a/src/test/modules/test_lfind/meson.build b/src/test/modules/test_lfind/meson.build
new file mode 100644
index 00000000000..9ccedc0aae3
--- /dev/null
+++ b/src/test/modules/test_lfind/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_lfind = shared_module('test_lfind',
+  ['test_lfind.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_lfind.control',
+  'test_lfind--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_lfind',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_lfind',
+    ],
+  },
+}
diff --git a/src/test/modules/test_misc/meson.build b/src/test/modules/test_misc/meson.build
new file mode 100644
index 00000000000..cfc830ff399
--- /dev/null
+++ b/src/test/modules/test_misc/meson.build
@@ -0,0 +1,12 @@
+tests += {
+  'name': 'test_misc',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_constraint_validation.pl',
+      't/002_tablespace.pl',
+      't/003_check_guc.pl',
+    ],
+  },
+}
diff --git a/src/test/modules/test_oat_hooks/meson.build b/src/test/modules/test_oat_hooks/meson.build
new file mode 100644
index 00000000000..9b20e7c56d4
--- /dev/null
+++ b/src/test/modules/test_oat_hooks/meson.build
@@ -0,0 +1,17 @@
+# FIXME: prevent install during main install, but not during test :/
+test_oat_hooks = shared_module('test_oat_hooks',
+  ['test_oat_hooks.c'],
+  kwargs: pg_mod_args,
+)
+
+tests += {
+  'name': 'test_oat_hooks',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_oat_hooks',
+    ],
+    'regress_args': ['--no-locale', '--encoding=UTF8'],
+  },
+}
diff --git a/src/test/modules/test_parser/meson.build b/src/test/modules/test_parser/meson.build
new file mode 100644
index 00000000000..35ee6ce324b
--- /dev/null
+++ b/src/test/modules/test_parser/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_parser = shared_module('test_parser',
+  ['test_parser.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_parser.control',
+  'test_parser--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_parser',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_parser',
+    ],
+  },
+}
diff --git a/src/test/modules/test_pg_dump/meson.build b/src/test/modules/test_pg_dump/meson.build
new file mode 100644
index 00000000000..41021829f3a
--- /dev/null
+++ b/src/test/modules/test_pg_dump/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+install_data(
+  'test_pg_dump.control',
+  'test_pg_dump--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_pg_dump',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_pg_dump',
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/001_base.pl',
+    ],
+  },
+}
diff --git a/src/test/modules/test_predtest/meson.build b/src/test/modules/test_predtest/meson.build
new file mode 100644
index 00000000000..001c2d848bb
--- /dev/null
+++ b/src/test/modules/test_predtest/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_predtest = shared_module('test_predtest',
+  ['test_predtest.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_predtest.control',
+  'test_predtest--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_predtest',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_predtest',
+    ],
+  },
+}
diff --git a/src/test/modules/test_rbtree/meson.build b/src/test/modules/test_rbtree/meson.build
new file mode 100644
index 00000000000..963a6220a2a
--- /dev/null
+++ b/src/test/modules/test_rbtree/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_rbtree = shared_module('test_rbtree',
+  ['test_rbtree.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_rbtree.control',
+  'test_rbtree--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_rbtree',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_rbtree',
+    ],
+  },
+}
diff --git a/src/test/modules/test_regex/meson.build b/src/test/modules/test_regex/meson.build
new file mode 100644
index 00000000000..61217dd2ca4
--- /dev/null
+++ b/src/test/modules/test_regex/meson.build
@@ -0,0 +1,23 @@
+# FIXME: prevent install during main install, but not during test :/
+test_regex = shared_module('test_regex',
+  ['test_regex.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_regex.control',
+  'test_regex--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_regex',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_regex',
+      'test_regex_utf8',
+    ],
+  },
+}
diff --git a/src/test/modules/test_rls_hooks/meson.build b/src/test/modules/test_rls_hooks/meson.build
new file mode 100644
index 00000000000..3f49b8ff540
--- /dev/null
+++ b/src/test/modules/test_rls_hooks/meson.build
@@ -0,0 +1,16 @@
+# FIXME: prevent install during main install, but not during test :/
+test_rls_hooks = shared_module('test_rls_hooks',
+  ['test_rls_hooks.c'],
+  kwargs: pg_mod_args,
+)
+
+tests += {
+  'name': 'test_rls_hooks',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_rls_hooks',
+    ],
+  },
+}
diff --git a/src/test/modules/test_shm_mq/meson.build b/src/test/modules/test_shm_mq/meson.build
new file mode 100644
index 00000000000..9a0f83917a5
--- /dev/null
+++ b/src/test/modules/test_shm_mq/meson.build
@@ -0,0 +1,26 @@
+# FIXME: prevent install during main install, but not during test :/
+test_shm_mq = shared_module('test_shm_mq',
+  files(
+    'setup.c',
+    'test.c',
+    'worker.c',
+  ),
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_shm_mq.control',
+  'test_shm_mq--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_shm_mq',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_shm_mq',
+    ],
+  },
+}
diff --git a/src/test/modules/unsafe_tests/meson.build b/src/test/modules/unsafe_tests/meson.build
new file mode 100644
index 00000000000..d69b0e7ce44
--- /dev/null
+++ b/src/test/modules/unsafe_tests/meson.build
@@ -0,0 +1,11 @@
+tests += {
+  'name': 'unsafe_tests',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'rolenames',
+      'alter_system_table',
+    ],
+  },
+}
diff --git a/src/test/modules/worker_spi/meson.build b/src/test/modules/worker_spi/meson.build
new file mode 100644
index 00000000000..b729c354827
--- /dev/null
+++ b/src/test/modules/worker_spi/meson.build
@@ -0,0 +1,25 @@
+# FIXME: prevent install during main install, but not during test :/
+test_worker_spi = shared_module('worker_spi',
+  files(
+    'worker_spi.c',
+  ),
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'worker_spi.control',
+  'worker_spi--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'worker_spi',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'worker_spi',
+    ],
+    'regress_args': ['--temp-config', files('dynamic.conf'), '--dbname=contrib_regression'],
+  },
+}
diff --git a/src/test/recovery/meson.build b/src/test/recovery/meson.build
new file mode 100644
index 00000000000..b0e398363f7
--- /dev/null
+++ b/src/test/recovery/meson.build
@@ -0,0 +1,43 @@
+tests += {
+  'name': 'recovery',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'test_kwargs': {'priority': 40}, # recovery tests are slow, start early
+    'tests': [
+      't/001_stream_rep.pl',
+      't/002_archiving.pl',
+      't/003_recovery_targets.pl',
+      't/004_timeline_switch.pl',
+      't/005_replay_delay.pl',
+      't/006_logical_decoding.pl',
+      't/007_sync_rep.pl',
+      't/008_fsm_truncation.pl',
+      't/009_twophase.pl',
+      't/010_logical_decoding_timelines.pl',
+      't/011_crash_recovery.pl',
+      't/012_subtransactions.pl',
+      't/013_crash_restart.pl',
+      't/014_unlogged_reinit.pl',
+      't/015_promotion_pages.pl',
+      't/016_min_consistency.pl',
+      't/017_shm.pl',
+      't/018_wal_optimize.pl',
+      't/019_replslot_limit.pl',
+      't/020_archive_status.pl',
+      't/021_row_visibility.pl',
+      't/022_crash_temp_files.pl',
+      't/023_pitr_prepared_xact.pl',
+      't/024_archive_recovery.pl',
+      't/025_stuck_on_old_timeline.pl',
+      't/026_overwrite_contrecord.pl',
+      't/027_stream_regress.pl',
+      't/028_pitr_timelines.pl',
+      't/029_stats_restart.pl',
+      't/030_stats_cleanup_replica.pl',
+      't/031_recovery_conflict.pl',
+      't/032_relfilenode_reuse.pl',
+      't/033_replay_tsp_drops.pl',
+    ],
+  },
+}
diff --git a/src/test/regress/meson.build b/src/test/regress/meson.build
new file mode 100644
index 00000000000..db139c0a820
--- /dev/null
+++ b/src/test/regress/meson.build
@@ -0,0 +1,58 @@
+# also used by isolationtester and ecpg tests
+pg_regress_c = files('pg_regress.c')
+pg_regress_inc = include_directories('.')
+
+regress_sources = pg_regress_c + files(
+  'pg_regress_main.c'
+)
+
+pg_regress_cflags = ['-DHOST_TUPLE="frak"', '-DSHELLPROG="/bin/sh"']
+
+pg_regress = executable('pg_regress',
+  regress_sources,
+  c_args: pg_regress_cflags,
+  dependencies: [frontend_code],
+  kwargs: default_bin_args + {
+    'install_dir': dir_pgxs / 'src/test/regress',
+  },
+)
+
+regress_module = shared_module('regress',
+  ['regress.c'],
+  kwargs: pg_mod_args + {
+    'install': false,
+  },
+)
+
+# Get some extra C modules from contrib/spi but mark them as not to be
+# installed.
+# FIXME: avoid the duplication.
+
+shared_module('autoinc',
+  ['../../../contrib/spi/autoinc.c'],
+  kwargs: pg_mod_args + {
+    'install': false,
+  },
+)
+
+shared_module('refint',
+  ['../../../contrib/spi/refint.c'],
+  c_args: refint_cflags,
+  kwargs: pg_mod_args + {
+    'install': false,
+  },
+)
+
+
+tests += {
+  'name': 'main',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'schedule': files('parallel_schedule'),
+    'test_kwargs': {
+      'priority': 50,
+      'timeout': 1000,
+    },
+  },
+}
diff --git a/src/test/ssl/meson.build b/src/test/ssl/meson.build
new file mode 100644
index 00000000000..e2f021d884a
--- /dev/null
+++ b/src/test/ssl/meson.build
@@ -0,0 +1,13 @@
+tests += {
+  'name': 'ssl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'env': {'with_ssl': get_option('ssl')},
+    'tests': [
+      't/001_ssltests.pl',
+      't/002_scram.pl',
+      't/003_sslinfo.pl',
+    ],
+  },
+}
diff --git a/src/test/subscription/meson.build b/src/test/subscription/meson.build
new file mode 100644
index 00000000000..85d1dd92951
--- /dev/null
+++ b/src/test/subscription/meson.build
@@ -0,0 +1,42 @@
+tests += {
+  'name': 'subscription',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'env': {'with_icu': icu.found() ? 'yes' : 'no'},
+    'tests': [
+      't/001_rep_changes.pl',
+      't/002_types.pl',
+      't/003_constraints.pl',
+      't/004_sync.pl',
+      't/005_encoding.pl',
+      't/006_rewrite.pl',
+      't/007_ddl.pl',
+      't/008_diff_schema.pl',
+      't/009_matviews.pl',
+      't/010_truncate.pl',
+      't/011_generated.pl',
+      't/012_collation.pl',
+      't/013_partition.pl',
+      't/014_binary.pl',
+      't/015_stream.pl',
+      't/016_stream_subxact.pl',
+      't/017_stream_ddl.pl',
+      't/018_stream_subxact_abort.pl',
+      't/019_stream_subxact_ddl_abort.pl',
+      't/020_messages.pl',
+      't/021_twophase.pl',
+      't/022_twophase_cascade.pl',
+      't/023_twophase_stream.pl',
+      't/024_add_drop_pub.pl',
+      't/025_rep_changes_for_schema.pl',
+      't/026_stats.pl',
+      't/027_nosuperuser.pl',
+      't/028_row_filter.pl',
+      't/029_on_error.pl',
+      't/030_origin.pl',
+      't/031_column_list.pl',
+      't/100_bugs.pl',
+    ],
+  },
+}
diff --git a/configure b/configure
index a268780c5db..d7130819fbe 100755
--- a/configure
+++ b/configure
@@ -20733,3 +20733,9 @@ if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
 $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
 fi
 
+
+# Ensure that any meson build directories would reconfigure and see that
+# there's a conflicting in-tree build and can error out.
+if test "$vpath_build"="no"; then
+  touch meson.build
+fi
diff --git a/configure.ac b/configure.ac
index 993b5d5cb0a..30a7f238e7c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2452,3 +2452,9 @@ AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
                   [echo >src/interfaces/ecpg/include/stamp-h])
 
 AC_OUTPUT
+
+# Ensure that any meson build directories would reconfigure and see that
+# there's a conflicting in-tree build and can error out.
+if test "$vpath_build"="no"; then
+  touch meson.build
+fi
diff --git a/conversion_helpers.txt b/conversion_helpers.txt
new file mode 100644
index 00000000000..7d963b19b3d
--- /dev/null
+++ b/conversion_helpers.txt
@@ -0,0 +1,16 @@
+convert list of files to quoted-one-per-line:
+
+	?\b\(\(?:\w\|\d\|_\|-\)+\)\.o ?\(?:\\
+\)? →   '\1.c',
+
+
+# prep
+m test --list > /tmp/tests.txt
+
+# check if all tap tests are known to meson
+for f in $(git ls-files|grep -E '(t|test)/.*.pl$'|sort);do t=$(echo $f|sed -E -e 's/^.*\/([^/]*)\/(t|test)\/(.*)\.pl$/\1\/\3/');grep -q -L $t /tmp/tests.txt || echo $f;done
+
+
+# expected to find plpgsql due to extra 'src' directory level, src/test/mb
+# because it's not run anywhere and sepgsql, because that's not tested yet
+for d in $(find ~/src/postgresql -type d -name sql);do t=$(basename $(dirname $d)); grep -q -L $t /tmp/tests.txt || echo $d; done
diff --git a/meson.build b/meson.build
new file mode 100644
index 00000000000..f1ecf685f14
--- /dev/null
+++ b/meson.build
@@ -0,0 +1,3009 @@
+project('postgresql',
+  ['c'],
+  version: '16devel',
+  license: 'PostgreSQL',
+
+  # We want < 0.56 for python 3.5 compatibility on old platforms. EPEL for
+  # RHEL 7 has 0.55. < 0.54 would require replacing some uses of the fs
+  # module, < 0.53 all uses of fs. So far there's no need to go to >=0.56.
+  meson_version: '>=0.54',
+  default_options: [
+    'warning_level=2',
+    'buildtype=release',
+  ]
+)
+
+
+
+###############################################################
+# Basic prep
+###############################################################
+
+fs = import('fs')
+pkgconfig = import('pkgconfig')
+
+host_system = host_machine.system()
+host_cpu = host_machine.cpu_family()
+
+cc = meson.get_compiler('c')
+
+not_found_dep = dependency('', required: false)
+thread_dep = dependency('threads')
+
+
+
+###############################################################
+# Safety first
+###############################################################
+
+# It's very easy to get into confusing states when the source directory
+# contains an in-place build. E.g. the wrong pg_config.h will be used. So just
+# refuse to build in that case.
+#
+# There's a more elaborate check later, that checks for conflicts around all
+# generated files. But we can only do that much further down the line, so this
+# quick check seems worth it. Adhering to this advice should clean up the
+# conflict, but won't protect against somebody doing make distclean or just
+# removing pg_config.h
+errmsg_nonclean_base = '''
+****
+Non-clean source code directory detected.
+
+To build with meson the source tree may not have an in-place, ./configure
+style, build configured. You can have both meson and ./configure style builds
+for the same source tree by building out-of-source / VPATH with
+configure. Alternatively use a separate check out for meson based builds.
+
+@0@
+****'''
+if fs.exists(meson.current_source_dir() / 'src' / 'include' / 'pg_config.h')
+  errmsg_cleanup = 'To clean up, run make maintainer-clean in the source tree.'
+  error(errmsg_nonclean_base.format(errmsg_cleanup))
+endif
+
+
+
+###############################################################
+# Variables to be determined
+###############################################################
+
+cdata = configuration_data()
+
+postgres_inc_d = ['src/include']
+postgres_inc_d += get_option('extra_include_dirs')
+
+postgres_lib_d = get_option('extra_lib_dirs')
+
+cppflags = []
+
+cflags = []
+cxxflags = []
+cflags_warn = []
+cxxflags_warn = []
+cflags_mod = []
+cxxflags_mod = []
+
+ldflags = []
+ldflags_be = []
+ldflags_sl = []
+ldflags_mod = []
+
+test_c_args = []
+
+os_deps = []
+backend_both_deps = []
+backend_deps = []
+libpq_deps = []
+
+pg_sysroot = ''
+
+
+
+###############################################################
+# Version and other metadata
+###############################################################
+
+pg_version = meson.project_version()
+
+if pg_version.endswith('devel')
+  pg_version_arr = [pg_version.split('devel')[0], '0']
+elif pg_version.contains('beta')
+  pg_version_arr = [pg_version.split('beta')[0], '0']
+elif pg_version.contains('rc')
+  pg_version_arr = [pg_version.split('rc')[0], '0']
+else
+  pg_version_arr = pg_version.split('.')
+endif
+
+pg_version_major = pg_version_arr[0].to_int()
+pg_version_minor = pg_version_arr[1].to_int()
+pg_version_num = (pg_version_major * 10000) + pg_version_minor
+
+pg_url = 'https://www.postgresql.org/'
+
+cdata.set_quoted('PACKAGE_NAME', 'PostgreSQL')
+cdata.set_quoted('PACKAGE_BUGREPORT', 'pgsql-bugs@lists.postgresql.org')
+cdata.set_quoted('PACKAGE_URL', pg_url)
+cdata.set_quoted('PACKAGE_VERSION', pg_version)
+cdata.set_quoted('PACKAGE_STRING', 'PostgreSQL @0@'.format(pg_version))
+cdata.set_quoted('PACKAGE_TARNAME', 'postgresql')
+
+pg_version += get_option('extra_version')
+cdata.set_quoted('PG_VERSION', pg_version)
+cdata.set_quoted('PG_VERSION_STR', 'PostgreSQL @0@ on @1@, compiled by @2@-@3@'.format(
+  pg_version, build_machine.cpu_family(), cc.get_id(), cc.version()))
+cdata.set_quoted('PG_MAJORVERSION', pg_version_major.to_string())
+cdata.set('PG_MAJORVERSION_NUM', pg_version_major)
+cdata.set('PG_MINORVERSION_NUM', pg_version_minor)
+cdata.set('PG_VERSION_NUM', pg_version_num)
+cdata.set_quoted('CONFIGURE_ARGS', '')
+
+
+
+###############################################################
+# Basic platform specific configuration
+###############################################################
+
+# meson's system names don't quite map to our "traditional" names. In some
+# places we need the "traditional" name, e.g., for mapping
+# src/include/port/$os.h to src/include/pg_config_os.h. Define portname for
+# that purpose.
+portname = host_system
+
+exesuffix = '' # overridden below where necessary
+dlsuffix = '.so' # overridden below where necessary
+library_path_var = 'LD_LIBRARY_PATH'
+
+export_file_format = 'gnu'
+export_file_suffix = 'list'
+export_fmt = '-Wl,--version-script=@0@'
+# flags to add when linking a postgres extension, @0@ is path to
+# the relevant object on the platform
+mod_link_args_fmt = []
+
+memset_loop_limit = 1024
+
+# We implement support for some operating systems by pretending they're
+# another. Map here, before determining system properties below
+if host_system == 'dragonfly'
+  # apparently the most similar
+  host_system = 'netbsd'
+endif
+
+if host_system == 'aix'
+  ld_library_path_var = 'LIBPATH'
+
+  export_file_format = 'aix'
+  export_fmt = '-Wl,-bE:@0@'
+  mod_link_args_fmt = ['-Wl,-bI:@0@']
+  mod_link_with_dir = 'libdir'
+  mod_link_with_name = '@0@.imp'
+
+  # M:SRE sets a flag indicating that an object is a shared library. Seems to
+  # work in some circumstances without, but required in others.
+  ldflags_sl += '-Wl,-bM:SRE'
+  ldflags_be += '-Wl,-brtllib'
+
+  # Native memset() is faster, tested on:
+  # - AIX 5.1 and 5.2, XLC 6.0 (IBM's cc)
+  # - AIX 5.3 ML3, gcc 4.0.1
+  memset_loop_limit = 0
+
+elif host_system == 'darwin'
+  dlsuffix = '.dylib'
+  ld_library_path_var = 'DYLD_LIBRARY_PATH'
+
+  export_file_format = 'darwin'
+  export_fmt = '-exported_symbols_list=@0@'
+
+  mod_link_args_fmt = ['-bundle_loader', '@0@']
+  mod_link_with_dir = 'bindir'
+  mod_link_with_name = '@0@'
+
+  sysroot_args = [files('src/tools/darwin_sysroot'), get_option('darwin_sysroot')]
+  pg_sysroot = run_command(sysroot_args, check:true).stdout().strip()
+  message('darwin sysroot: @0@'.format(pg_sysroot))
+  cflags += ['-isysroot', pg_sysroot]
+  ldflags += ['-isysroot', pg_sysroot]
+
+elif host_system == 'windows'
+  portname = 'win32'
+  exesuffix = '.exe'
+  dlsuffix = '.dll'
+  ld_library_path_var = ''
+
+  export_file_format = 'win'
+  export_file_suffix = 'def'
+  if cc.get_id() == 'msvc'
+    export_fmt = '/DEF:@0@'
+    mod_link_with_name = '@0@.exe.lib'
+  else
+    export_fmt = '@0@'
+    mod_link_with_name = 'lib@0@.exe.a'
+  endif
+  mod_link_args_fmt = ['@0@']
+  mod_link_with_dir = 'libdir'
+
+  cdata.set('WIN32_STACK_RLIMIT', 4194304)
+  if cc.get_id() == 'msvc'
+    # From MSBuildProject.pm:
+    # XXX used wrong value for a while, without problem
+    # RandomizedBaseAddress=false -> /dynamicbase:false
+    ldflags += '/DYNAMICBASE:NO'
+    ldflags += '/INCREMENTAL:NO'
+    ldflags += '/STACK:@0@'.format(cdata.get('WIN32_STACK_RLIMIT'))
+    # ldflags += '/fixed:no' # Used to have that just in meson, not sure why
+    # ldflags += '/nxcompat' # generated by msbuild, should have it for ninja?
+  else
+    ldflags += '-Wl,--stack,@0@'.format(cdata.get('WIN32_STACK_RLIMIT'))
+  endif
+
+  os_deps += cc.find_library('ws2_32', required: true)
+  secur32_dep = cc.find_library('secur32', required: true)
+  backend_deps += secur32_dep
+  libpq_deps += secur32_dep
+
+  postgres_inc_d += 'src/include/port/win32'
+  if cc.get_id() == 'msvc'
+    postgres_inc_d += 'src/include/port/win32_msvc'
+  endif
+
+  windows = import('windows')
+
+elif host_system == 'sunos'
+  portname = 'solaris'
+  export_fmt = '-Wl,-M@0@'
+  cppflags += '-D_POSIX_PTHREAD_SEMANTICS'
+
+elif host_system == 'linux'
+  cppflags += '-D_GNU_SOURCE'
+
+elif host_system == 'cygwin'
+  cppflags += '-D_GNU_SOURCE'
+
+elif host_system in ['freebsd', 'netbsd', 'openbsd']
+  # you're ok
+else
+  # XXX: Should we add an option to override the host_system as an escape
+  # hatch?
+  error('unknown host system: @0@'.format(host_system))
+endif
+
+
+
+###############################################################
+# Program paths
+###############################################################
+
+# External programs
+perl = find_program(get_option('PERL'), required: true, native: true)
+python = find_program(get_option('PYTHON'), required: true, native: true)
+flex = find_program(get_option('FLEX'), native: true)
+bison = find_program(get_option('BISON'), native: true, version: '>= 1.875')
+sed = find_program(get_option('SED'), 'sed', native: true)
+prove = find_program(get_option('PROVE'), native: true)
+tar = find_program(get_option('TAR'), native: true)
+gzip = find_program(get_option('GZIP'), native: true)
+program_lz4 = find_program(get_option('LZ4'), native: true, required: false)
+touch = find_program('touch', native: true)
+program_zstd = find_program(get_option('ZSTD'), native: true, required: false)
+dtrace = find_program(get_option('DTRACE'), native: true, required: get_option('dtrace'))
+missing = find_program('config/missing', native: true)
+
+# Internal programs
+testwrap = find_program('src/tools/testwrap', native: true)
+
+# used by PGXS
+install_sh = find_program('config/install-sh', native: true)
+
+bison_flags = []
+if bison.found()
+  bison_version_c = run_command(bison, '--version', check: true)
+  # bison version string helpfully is something like
+  # >>bison (GNU bison) 3.8.1<<
+  bison_version = bison_version_c.stdout().split(' ')[3].split('\n')[0]
+  if bison_version.version_compare('>=3.0')
+    bison_flags += ['-Wno-deprecated']
+  endif
+endif
+bison_cmd = [bison, bison_flags, '-o', '@OUTPUT0@']
+
+flex_flags = []
+flex_wrapper = files('src/tools/pgflex')
+flex_cmd = [python, flex_wrapper, '--builddir', meson.build_root(),
+ '--privatedir', '@PRIVATE_DIR@', '--flex', flex, '-o', '@OUTPUT0@']
+
+flex_backup = ['-b']
+flex_fix_warning_script = files('src/tools/fix-old-flex-code.pl')
+flex_fix_warning = ['--perl', perl, '--fix_warning_script', flex_fix_warning_script]
+
+wget = find_program('wget', required: false, native: true)
+wget_flags = ['-O', '@OUTPUT0@', '--no-use-server-timestamps']
+
+
+
+###############################################################
+# Path to meson (for tests etc)
+###############################################################
+
+# NB: this should really be part of meson, see
+# https://github.com/mesonbuild/meson/issues/8511
+meson_binpath_r = run_command(python, 'src/tools/find_meson', check: true)
+
+if meson_binpath_r.returncode() != 0 or meson_binpath_r.stdout() == ''
+  error('huh, could not run find_meson.\nerrcode: @0@\nstdout: @1@\nstderr: @2@'.format(
+    meson_binpath_r.returncode(),
+    meson_binpath_r.stdout(),
+    meson_binpath_r.stderr()))
+endif
+
+meson_binpath_s = meson_binpath_r.stdout().split('\n')
+meson_binpath_len = meson_binpath_s.length()
+
+if meson_binpath_len < 1
+  error('unexpected introspect line @0@'.format(meson_binpath_r.stdout()))
+endif
+
+i = 0
+meson_impl = ''
+meson_binpath = ''
+meson_args = []
+foreach e : meson_binpath_s
+  if i == 0
+    meson_impl = e
+  elif i == 1
+    meson_binpath = e
+  else
+    meson_args += e
+  endif
+  i += 1
+endforeach
+
+if meson_impl not in ['muon', 'meson']
+  error('unknown meson implementation "@0@"'.format(meson_impl))
+endif
+
+meson_bin = find_program(meson_binpath, native: true)
+
+
+
+###############################################################
+# Option Handling
+###############################################################
+
+cdata.set('USE_ASSERT_CHECKING', get_option('cassert') ? 1 : false)
+
+cdata.set('BLCKSZ', get_option('blocksize').to_int() * 1024, description:
+'''Size of a disk block --- this also limits the size of a tuple. You can set
+   it bigger if you need bigger tuples (although TOAST should reduce the need
+   to have large tuples, since fields can be spread across multiple tuples).
+   BLCKSZ must be a power of 2. The maximum possible value of BLCKSZ is
+   currently 2^15 (32768). This is determined by the 15-bit widths of the
+   lp_off and lp_len fields in ItemIdData (see include/storage/itemid.h).
+   Changing BLCKSZ requires an initdb.''')
+
+cdata.set('XLOG_BLCKSZ', get_option('wal_blocksize') * 1024)
+cdata.set('RELSEG_SIZE', get_option('segsize') * 131072)
+cdata.set('DEF_PGPORT', get_option('pgport'))
+cdata.set_quoted('DEF_PGPORT_STR', get_option('pgport'))
+cdata.set_quoted('PG_KRB_SRVNAM', get_option('krb_srvnam'))
+if get_option('system_tzdata') != ''
+  cdata.set_quoted('SYSTEMTZDIR', get_option('system_tzdata'))
+endif
+
+
+
+###############################################################
+# Search paths, preparation for compiler tests
+#
+# NB: Arguments added globally (via the below) are not taken into account for
+# configuration-time checks (so they are more isolated). Flags that have to be
+# taken into account for configure checks have to be explicitly specified in
+# configure tests.
+###############################################################
+
+postgres_inc = include_directories(postgres_inc_d)
+test_lib_d = postgres_lib_d
+test_c_args = cppflags + cflags
+
+
+
+###############################################################
+# Directories
+###############################################################
+
+# These are set by the equivalent --xxxdir configure options.  We
+# append "postgresql" to some of them, if the string does not already
+# contain "pgsql" or "postgres", in order to avoid directory clutter.
+
+pkg = 'postgresql'
+
+dir_prefix = get_option('prefix')
+
+dir_bin = get_option('bindir')
+
+dir_data = get_option('datadir')
+if not (dir_data.contains('pgsql') or dir_data.contains('postgres'))
+  dir_data = dir_data / pkg
+endif
+
+dir_sysconf = get_option('sysconfdir')
+if not (dir_sysconf.contains('pgsql') or dir_sysconf.contains('postgres'))
+  dir_sysconf = dir_sysconf / pkg
+endif
+
+dir_lib = get_option('libdir')
+
+dir_lib_pkg = dir_lib
+if not (dir_lib_pkg.contains('pgsql') or dir_lib_pkg.contains('postgres'))
+  dir_lib_pkg = dir_lib_pkg / pkg
+endif
+
+dir_pgxs = dir_lib_pkg / 'pgxs'
+
+dir_include = get_option('includedir')
+
+dir_include_pkg = dir_include
+dir_include_pkg_rel = ''
+if not (dir_include_pkg.contains('pgsql') or dir_include_pkg.contains('postgres'))
+  dir_include_pkg = dir_include_pkg / pkg
+  dir_include_pkg_rel = pkg
+endif
+
+dir_man = get_option('mandir')
+
+# FIXME: These used to be separately configurable - worth adding?
+dir_doc = get_option('datadir') / 'doc' / 'postgresql'
+dir_doc_html = dir_doc
+
+dir_locale = get_option('localedir')
+
+
+# Derived values
+dir_bitcode = dir_lib_pkg / 'bitcode'
+dir_include_internal = dir_include_pkg / 'internal'
+dir_include_server = dir_include_pkg / 'server'
+dir_include_extension = dir_include_server / 'extension'
+dir_data_extension = dir_data / 'extension'
+
+
+
+###############################################################
+# Library: bsd-auth
+###############################################################
+
+bsd_authopt = get_option('bsd_auth')
+bsd_auth = not_found_dep
+if cc.check_header('bsd_auth.h', required: bsd_authopt,
+    args: test_c_args, include_directories: postgres_inc)
+  cdata.set('USE_BSD_AUTH', 1)
+  bsd_auth = declare_dependency()
+endif
+
+
+
+###############################################################
+# Library: bonjour
+#
+# For now don't search for DNSServiceRegister in a library - only Apple's
+# Bonjour implementation, which is always linked, works.
+###############################################################
+
+bonjouropt = get_option('bonjour')
+bonjour = dependency('', required : false)
+if cc.check_header('dns_sd.h', required: bonjouropt,
+    args: test_c_args, include_directories: postgres_inc) and \
+   cc.has_function('DNSServiceRegister',
+    args: test_c_args, include_directories: postgres_inc)
+  cdata.set('USE_BONJOUR', 1)
+  bonjour = declare_dependency()
+endif
+
+
+
+###############################################################
+# Library: GSSAPI
+###############################################################
+
+gssapiopt = get_option('gssapi')
+krb_srvtab = ''
+have_gssapi = false
+if not gssapiopt.disabled()
+  gssapi = dependency('krb5-gssapi', required: gssapiopt)
+  have_gssapi = gssapi.found()
+
+  if not have_gssapi
+  elif cc.check_header('gssapi/gssapi.h', dependencies: gssapi, required: false,
+      args: test_c_args, include_directories: postgres_inc)
+    cdata.set('HAVE_GSSAPI_GSSAPI_H', 1)
+  elif cc.check_header('gssapi.h', args: test_c_args, dependencies: gssapi, required: gssapiopt)
+    cdata.set('HAVE_GSSAPI_H', 1)
+  else
+    have_gssapi = false
+  endif
+
+  if not have_gssapi
+  elif cc.has_function('gss_init_sec_context', dependencies: gssapi,
+      args: test_c_args, include_directories: postgres_inc)
+    cdata.set('ENABLE_GSS', 1)
+
+    krb_srvtab = 'FILE:/@0@/krb5.keytab)'.format(get_option('sysconfdir'))
+    cdata.set_quoted('PG_KRB_SRVTAB', krb_srvtab)
+  elif gssapiopt.enabled()
+    error('''could not find function 'gss_init_sec_context' required for GSSAPI''')
+  else
+    have_gssapi = false
+  endif
+endif
+if not have_gssapi
+  gssapi = not_found_dep
+endif
+
+
+
+###############################################################
+# Library: ldap
+###############################################################
+
+ldapopt = get_option('ldap')
+if not ldapopt.disabled()
+
+  if host_system == 'windows'
+    ldap = cc.find_library('wldap32')
+    ldap_r = ldap
+  else
+    # macos framework dependency is buggy for ldap (one can argue
+    # whether it's Apple's or meson's fault), leading to an endless
+    # recursion with ldap.h including itself. See
+    # https://github.com/mesonbuild/meson/issues/10002
+    # Luckily we only need pkg-config support, so the workaround isn't
+    # too complicated
+    ldap = dependency('ldap', method: 'pkg-config', required: false)
+
+    # Before 2.5 openldap didn't have a pkg-config file..
+    if ldap.found()
+      ldap_r = ldap
+    else
+      ldap = cc.find_library('ldap', required: ldapopt, dirs: test_lib_d)
+      ldap_r = cc.find_library('ldap_r', required: ldapopt, dirs: test_lib_d)
+
+      # Use ldap_r for FE if available, else assume ldap is thread-safe.
+      # On some platforms ldap_r fails to link without PTHREAD_LIBS.
+      if ldap.found() and not ldap_r.found()
+        ldap_r = ldap
+      endif
+    endif
+
+    if ldap.found() and cc.has_function('ldap_initialize',
+        dependencies: [ldap, thread_dep],
+        args: test_c_args, include_directories: postgres_inc)
+      cdata.set('HAVE_LDAP_INITIALIZE', 1)
+    endif
+
+    # If found via cc.find_library() ensure headers are found when using the
+    # dependency. On meson < 0.57 one cannot do compiler checks using the
+    # dependency returned by declare_dependency(), so we can't do this above.
+    if ldap.found() and ldap.type_name() == 'library'
+      # declare dependency so that the additional include dir it might reside in
+      # is added automatically where necessary
+      ldap = declare_dependency(dependencies: ldap,
+        include_directories: postgres_inc)
+      ldap_r = declare_dependency(dependencies: ldap_r,
+        include_directories: postgres_inc)
+    endif
+  endif
+
+  # FIXME: port autoconf openldap 2.5+ changes, as well as PGAC_LDAP_SAFE
+
+  if ldap.found()
+    cdata.set('USE_LDAP', 1)
+  endif
+
+else
+  ldap = not_found_dep
+  ldap_r = ldap
+endif
+
+
+
+###############################################################
+# Library: LLVM
+###############################################################
+
+llvmopt = get_option('llvm')
+if not llvmopt.disabled()
+  add_languages('cpp', required: true, native: false)
+  llvm = dependency('llvm', version: '>=3.9', method: 'config-tool', required: llvmopt)
+
+  if llvm.found()
+
+    cdata.set('USE_LLVM', 1)
+
+    cpp = meson.get_compiler('cpp')
+
+    llvm_binpath = llvm.get_variable(configtool: 'bindir')
+
+    ccache = find_program('ccache', native: true, required: false)
+    clang = find_program(llvm_binpath / 'clang', required: true)
+  endif
+else
+  llvm = not_found_dep
+endif
+
+
+
+###############################################################
+# Library: icu
+###############################################################
+
+icuopt = get_option('icu')
+if not icuopt.disabled()
+  icu = dependency('icu-uc', required: icuopt.enabled())
+  icu_i18n = dependency('icu-i18n', required: icuopt.enabled())
+
+  if icu.found()
+    cdata.set('USE_ICU', 1)
+  endif
+
+else
+  icu = not_found_dep
+  icu_i18n = not_found_dep
+endif
+
+
+
+###############################################################
+# Library: libxml
+###############################################################
+
+libxmlopt = get_option('libxml')
+if not libxmlopt.disabled()
+  libxml = dependency('libxml-2.0', required: libxmlopt, version: '>= 2.6.23')
+
+  if libxml.found()
+    cdata.set('USE_LIBXML', 1)
+  endif
+else
+  libxml = not_found_dep
+endif
+
+
+
+###############################################################
+# Library: libxslt
+###############################################################
+
+libxsltopt = get_option('libxslt')
+if not libxsltopt.disabled()
+  libxslt = dependency('libxslt', required: libxsltopt)
+
+  if libxslt.found()
+    cdata.set('USE_LIBXSLT', 1)
+  endif
+else
+  libxslt = not_found_dep
+endif
+
+
+
+###############################################################
+# Library: lz4
+###############################################################
+
+lz4opt = get_option('lz4')
+if not lz4opt.disabled()
+  lz4 = dependency('liblz4', required: lz4opt)
+
+  if lz4.found()
+    cdata.set('USE_LZ4', 1)
+    cdata.set('HAVE_LIBLZ4', 1)
+  endif
+
+else
+  lz4 = not_found_dep
+endif
+
+
+
+###############################################################
+# Library: Tcl (for pltcl)
+# tclConfig.sh
+#
+# NB: tclConfig.sh is used in autoconf build for getting
+# TCL_SHARED_BUILD, TCL_INCLUDE_SPEC, TCL_LIBS and TCL_LIB_SPEC
+# variables. For now we have not seen a need to copy
+# that behaviour to the meson build.
+###############################################################
+
+tclopt = get_option('pltcl')
+tcl_version = get_option('tcl_version')
+tcl_dep = not_found_dep
+if not tclopt.disabled()
+
+  # via pkg-config
+  tcl_dep = dependency(tcl_version, required: false)
+
+  if not tcl_dep.found()
+    tcl_dep = cc.find_library(tcl_version,
+      required: tclopt,
+      dirs: test_lib_d)
+  endif
+
+  if not cc.has_header('tcl.h', dependencies: tcl_dep, required: tclopt)
+    tcl_dep = not_found_dep
+  endif
+endif
+
+
+
+###############################################################
+# Library: pam
+###############################################################
+
+pamopt = get_option('pam')
+if not pamopt.disabled()
+  pam = dependency('pam', required: false)
+
+  if not pam.found()
+    pam = cc.find_library('pam', required: pamopt, dirs: test_lib_d)
+  endif
+
+  if pam.found()
+    pam_header_found = false
+
+    # header file <security/pam_appl.h> or <pam/pam_appl.h> is required for PAM.
+    if cc.check_header('security/pam_appl.h', dependencies: pam, required: false,
+        args: test_c_args, include_directories: postgres_inc)
+      cdata.set('HAVE_SECURITY_PAM_APPL_H', 1)
+      pam_header_found = true
+    elif cc.check_header('pam/pam_appl.h', dependencies: pam, required: pamopt,
+        args: test_c_args, include_directories: postgres_inc)
+      cdata.set('HAVE_PAM_PAM_APPL_H', 1)
+      pam_header_found = true
+    endif
+
+    if pam_header_found
+      cdata.set('USE_PAM', 1)
+    else
+      pam = not_found_dep
+    endif
+  endif
+else
+  pam = not_found_dep
+endif
+
+
+
+###############################################################
+# Library: Perl (for plperl)
+###############################################################
+
+perlopt = get_option('plperl')
+perl_dep = not_found_dep
+if perlopt.disabled()
+  perl_may_work = false
+else
+  perl_may_work = true
+
+  # First verify that perl has the necessary dependencies installed
+  perl_mods = run_command(
+    [perl,
+     '-MConfig', '-MOpcode', '-MExtUtils::Embed', '-MExtUtils::ParseXS',
+     '-e', ''],
+    check: false)
+  if perl_mods.returncode() != 0
+    perl_may_work = false
+    perl_msg = 'perl installation does not have the required modules'
+  endif
+
+  # Then inquire perl about its configuration
+  if perl_may_work
+    # FIXME: include copy-edited comments from perl.m4
+    perl_conf_cmd = [perl, '-MConfig', '-e', 'print $Config{$ARGV[0]}']
+    perlversion = run_command(perl_conf_cmd, 'api_versionstring', check: true).stdout()
+    archlibexp = run_command(perl_conf_cmd, 'archlibexp', check: true).stdout()
+    privlibexp = run_command(perl_conf_cmd, 'privlibexp', check: true).stdout()
+    useshrplib = run_command(perl_conf_cmd, 'useshrplib', check: true).stdout()
+    libperl = run_command(perl_conf_cmd, 'libperl', check: true).stdout()
+
+    perl_inc_dir = '@0@/CORE'.format(archlibexp)
+
+    if useshrplib != 'true'
+      perl_may_work = false
+      perl_msg = 'need a shared perl'
+    endif
+  endif
+
+  # XXX: should we only add directories that exist? Seems a bit annoying with
+  # macos' sysroot stuff...
+  #
+  # NB: For unknown reasons msys' python doesn't see these paths, despite gcc
+  # et al seeing them. So we can't use include_directories(), as that checks
+  # file existence.
+  if perl_may_work
+    # On most platforms, archlibexp is also where the Perl include files live ...
+    perl_ccflags = ['-I@0@'.format(perl_inc_dir)]
+    # ... but on newer macOS versions, we must use -iwithsysroot to look
+    # under sysroot
+    if not fs.is_file('@0@/perl.h'.format(perl_inc_dir)) and \
+       fs.is_file('@0@@1@/perl.h'.format(pg_sysroot, perl_inc_dir))
+      perl_ccflags = ['-iwithsysroot', perl_inc_dir]
+    endif
+
+    # check required headers are present
+    if not cc.has_header('perl.h', required: false,
+        args: test_c_args + perl_ccflags, include_directories: postgres_inc)
+      perl_may_work = false
+      perl_msg = 'missing perl.h'
+    endif
+  endif
+
+  if perl_may_work
+    perl_ccflags_r = run_command(perl_conf_cmd, 'ccflags', check: true).stdout()
+    message('CCFLAGS recommended by Perl: @0@'.format(perl_ccflags_r))
+
+    # See comments for PGAC_CHECK_PERL_EMBED_CCFLAGS in perl.m4
+    foreach flag : perl_ccflags_r.split(' ')
+      if flag.startswith('-D') and \
+        (not flag.startswith('-D_') or flag == '_USE_32BIT_TIME_T')
+        perl_ccflags += flag
+      endif
+    endforeach
+
+    if host_system == 'windows'
+      perl_ccflags += ['-DPLPERL_HAVE_UID_GID']
+    endif
+
+    message('CCFLAGS for embedding perl: @0@'.format(' '.join(perl_ccflags)))
+
+    # We are after Embed's ldopts, but without the subset mentioned in
+    # Config's ccdlflags and ldflags.  (Those are the choices of those who
+    # built the Perl installation, which are not necessarily appropriate
+    # for building PostgreSQL.)
+    ldopts = run_command(perl, '-MExtUtils::Embed', '-e', 'ldopts', check: true).stdout().strip()
+    undesired = run_command(perl_conf_cmd, 'ccdlflags', check: true).stdout().split()
+    undesired += run_command(perl_conf_cmd, 'ldflags', check: true).stdout().split()
+
+    perl_ldopts = []
+    foreach ldopt : ldopts.split(' ')
+      if ldopt == '' or ldopt in undesired
+        continue
+      endif
+
+      perl_ldopts += ldopt.strip('"')
+    endforeach
+
+    # FIXME: check if windows handling is necessary
+
+    message('LDFLAGS for embedding perl: "@0@" (ldopts: "@1@")'.format(
+      ' '.join(perl_ldopts), ldopts))
+
+    perl_dep_int = declare_dependency(
+      compile_args: perl_ccflags,
+      link_args: perl_ldopts,
+      version: perlversion,
+    )
+
+    # While we're at it, check that we can link to libperl.
+    # On most platforms, if perl.h is there then libperl.so will be too, but at
+    # this writing Debian packages them separately.
+    # This doesn't work on old meson versions, but that's ok, it's just nicer
+    # to test here.
+    perl_link_test = '''
+/* see plperl.h */
+#ifdef _MSC_VER
+#define __inline__ inline
+#endif
+#include <EXTERN.h>
+#include <perl.h>
+int main(void)
+{
+perl_alloc();
+}'''
+    if meson.version().version_compare('>=0.57') and not \
+        cc.links(perl_link_test, name: 'libperl',
+          args: test_c_args + perl_ccflags + perl_ldopts,
+          include_directories: postgres_inc)
+      perl_may_work = false
+      perl_msg = 'missing libperl'
+    endif
+
+  endif # perl_may_work
+
+  if perl_may_work
+    perl_dep = perl_dep_int
+  else
+    if perlopt.enabled()
+      error('dependency plperl failed: @0@'.format(perl_msg))
+    else
+      message('disabling optional dependency plperl: @0@'.format(perl_msg))
+    endif
+  endif
+endif
+
+
+
+###############################################################
+# Library: Python (for plpython)
+###############################################################
+
+pyopt = get_option('plpython')
+if not pyopt.disabled()
+  pm = import('python')
+  python3_inst = pm.find_installation(required: pyopt.enabled())
+  python3_dep = python3_inst.dependency(embed: true, required: pyopt.enabled())
+  if not cc.check_header('Python.h', dependencies: python3_dep, required: pyopt.enabled())
+    python3_dep = not_found_dep
+  endif
+else
+  python3_dep = not_found_dep
+endif
+
+
+
+###############################################################
+# Library: Readline
+###############################################################
+
+if not get_option('readline').disabled()
+  libedit_preferred = get_option('libedit_preferred')
+  # Set the order of readline dependencies
+  check_readline_deps = libedit_preferred ? \
+    ['libedit', 'readline'] : ['readline', 'libedit']
+
+  foreach readline_dep : check_readline_deps
+    readline = dependency(readline_dep, required: false)
+    if not readline.found()
+      readline = cc.find_library(readline_dep,
+        required: get_option('readline').enabled(),
+        dirs: test_lib_d)
+    endif
+    if readline.found()
+      break
+    endif
+  endforeach
+
+  if readline.found()
+    cdata.set('HAVE_LIBREADLINE', 1)
+
+    editline_prefix = {
+      'header_prefix': 'editline/',
+      'flag_prefix': 'EDITLINE_',
+    }
+    readline_prefix = {
+      'header_prefix': 'readline/',
+      'flag_prefix': 'READLINE_',
+    }
+    default_prefix = {
+      'header_prefix': '',
+      'flag_prefix': '',
+    }
+
+    # Set the order of prefixes
+    prefixes = libedit_preferred ? \
+      [editline_prefix, default_prefix, readline_prefix] : \
+      [readline_prefix, default_prefix, editline_prefix]
+
+    at_least_one_header_found = false
+    foreach header : ['history', 'readline']
+      is_found = false
+      foreach prefix : prefixes
+        header_file = '@0@@1@.h'.format(prefix['header_prefix'], header)
+        # Check history.h and readline.h
+        if not is_found and cc.has_header(header_file,
+            args: test_c_args, include_directories: postgres_inc,
+            dependencies: [readline], required: false)
+          if header == 'history'
+            history_h = header_file
+          else
+            readline_h = header_file
+          endif
+          cdata.set('HAVE_@0@@1@_H'.format(prefix['flag_prefix'], header).to_upper(), 1)
+          is_found = true
+          at_least_one_header_found = true
+        endif
+      endforeach
+    endforeach
+
+    if not at_least_one_header_found
+      error('''readline header not found
+If you have @0@ already installed, see see meson-log/meson-log.txt for details on the
+failure. It is possible the compiler isn't looking in the proper directory.
+Use -Dreadline=false to disable readline support.'''.format(readline_dep))
+    endif
+
+    check_funcs = [
+      'append_history',
+      'history_truncate_file',
+      'rl_completion_matches',
+      'rl_filename_completion_function',
+      'rl_reset_screen_size',
+      'rl_variable_bind',
+    ]
+
+    foreach func : check_funcs
+      found = cc.has_function(func, dependencies: [readline],
+        args: test_c_args, include_directories: postgres_inc)
+      cdata.set('HAVE_'+func.to_upper(), found ? 1 : false)
+    endforeach
+
+    check_vars = [
+      'rl_completion_suppress_quote',
+      'rl_filename_quote_characters',
+      'rl_filename_quoting_function',
+    ]
+
+    foreach var : check_vars
+      cdata.set('HAVE_'+var.to_upper(),
+        cc.has_header_symbol(readline_h, var,
+          args: test_c_args, include_directories: postgres_inc,
+          prefix: '#include <stdio.h>',
+          dependencies: [readline]) ? 1 : false)
+    endforeach
+
+    # If found via cc.find_library() ensure headers are found when using the
+    # dependency. On meson < 0.57 one cannot do compiler checks using the
+    # dependency returned by declare_dependency(), so we can't do this above.
+    if readline.type_name() == 'library'
+      readline = declare_dependency(dependencies: readline,
+        include_directories: postgres_inc)
+    endif
+  endif
+
+  # XXX: Figure out whether to implement mingw warning equivalent
+else
+  readline = not_found_dep
+endif
+
+
+
+###############################################################
+# Library: selinux
+###############################################################
+
+selinux = not_found_dep
+selinuxopt = get_option('selinux')
+if meson.version().version_compare('>=0.59')
+  selinuxopt = selinuxopt.disable_auto_if(host_system != 'linux')
+endif
+selinux = dependency('libselinux', required: selinuxopt, version: '>= 2.1.10')
+cdata.set('HAVE_LIBSELINUX',
+  selinux.found() ? 1 : false)
+
+
+
+###############################################################
+# Library: systemd
+###############################################################
+
+systemd = not_found_dep
+systemdopt = get_option('systemd')
+if meson.version().version_compare('>=0.59')
+  systemdopt = systemdopt.disable_auto_if(host_system != 'linux')
+endif
+systemd = dependency('libsystemd', required: systemdopt)
+cdata.set('USE_SYSTEMD', systemd.found() ? 1 : false)
+
+
+
+###############################################################
+# Library: SSL
+###############################################################
+
+if get_option('ssl') == 'openssl'
+
+  # Try to find openssl via pkg-config et al, if that doesn't work
+  # (e.g. because it's provided as part of the OS, like on FreeBSD), look for
+  # the library names that we know about.
+
+  # via pkg-config et al
+  ssl = dependency('openssl', required: false)
+
+  # via library + headers
+  if not ssl.found()
+    ssl_lib = cc.find_library('ssl',
+      dirs: test_lib_d,
+      header_include_directories: postgres_inc,
+      has_headers: ['openssl/ssl.h', 'openssl/err.h'])
+    crypto_lib = cc.find_library('crypto',
+      dirs: test_lib_d,
+      header_include_directories: postgres_inc)
+    ssl_int = [ssl_lib, crypto_lib]
+
+    ssl = declare_dependency(dependencies: ssl_int,
+                             include_directories: postgres_inc)
+  else
+    cc.has_header('openssl/ssl.h', args: test_c_args, dependencies: ssl, required: true)
+    cc.has_header('openssl/err.h', args: test_c_args, dependencies: ssl, required: true)
+
+    ssl_int = [ssl]
+  endif
+
+  check_funcs = [
+    ['CRYPTO_new_ex_data', {'required': true}],
+    ['SSL_new', {'required': true}],
+
+    # Function introduced in OpenSSL 1.0.2.
+    ['X509_get_signature_nid'],
+
+    # Functions introduced in OpenSSL 1.1.0. We used to check for
+    # OPENSSL_VERSION_NUMBER, but that didn't work with 1.1.0, because LibreSSL
+    # defines OPENSSL_VERSION_NUMBER to claim version 2.0.0, even though it
+    # doesn't have these OpenSSL 1.1.0 functions. So check for individual
+    # functions.
+    ['OPENSSL_init_ssl'],
+    ['BIO_get_data'],
+    ['BIO_meth_new'],
+    ['ASN1_STRING_get0_data'],
+    ['HMAC_CTX_new'],
+    ['HMAC_CTX_free'],
+
+    # OpenSSL versions before 1.1.0 required setting callback functions, for
+    # thread-safety. In 1.1.0, it's no longer required, and CRYPTO_lock()
+    # function was removed.
+    ['CRYPTO_lock'],
+  ]
+
+  foreach c : check_funcs
+    func = c.get(0)
+    val = cc.has_function(func, args: test_c_args, dependencies: ssl_int)
+    required = c.get(1, {}).get('required', false)
+    if required and not val
+      error('openssl function @0@ is required'.format(func))
+    elif not required
+      cdata.set('HAVE_' + func.to_upper(), val ? 1 : false)
+    endif
+  endforeach
+
+  cdata.set('USE_OPENSSL', 1,
+            description: 'Define to 1 to build with OpenSSL support. (-Dssl=openssl)')
+
+  cdata.set('OPENSSL_API_COMPAT', '0x10001000L',
+            description: '''Define to the OpenSSL API version in use. This avoids deprecation warnings
+   from newer OpenSSL versions.''')
+else
+  ssl = not_found_dep
+endif
+
+
+
+###############################################################
+# Library: uuid
+###############################################################
+
+uuidopt = get_option('uuid')
+if uuidopt != 'none'
+  uuidname = uuidopt.to_upper()
+  if uuidopt == 'e2fs'
+    uuid = dependency('uuid', required: true)
+    uuidfunc = 'uuid_generate'
+    uuidheader = 'uuid/uuid.h'
+  elif uuidopt == 'bsd'
+    # libc should have uuid function
+    uuid = declare_dependency()
+    uuidfunc = 'uuid_to_string'
+    uuidheader = 'uuid.h'
+  elif uuidopt == 'ossp'
+    uuid = dependency('ossp-uuid', required: true)
+    uuidfunc = 'uuid_export'
+    uuidheader = 'ossp/uuid.h'
+  else
+    error('huh')
+  endif
+
+  if not cc.has_header_symbol(uuidheader, uuidfunc, args: test_c_args, dependencies: uuid)
+    error('uuid library @0@ missing required function @1@'.format(uuidopt, uuidfunc))
+  endif
+  cdata.set('HAVE_@0@'.format(uuidheader.underscorify().to_upper()), 1)
+
+  cdata.set('HAVE_UUID_@0@'.format(uuidname), 1,
+           description: 'Define to 1 if you have @0@ UUID support.'.format(uuidname))
+else
+  uuid = not_found_dep
+endif
+
+
+
+###############################################################
+# Library: zlib
+###############################################################
+
+zlibopt = get_option('zlib')
+zlib = not_found_dep
+if not zlibopt.disabled()
+  zlib_t = dependency('zlib', required: zlibopt)
+
+  if zlib_t.type_name() == 'internal'
+    # if fallback was used, we don't need to test if headers are present (they
+    # aren't built yet, so we can't test)
+    zlib = zlib_t
+  elif not zlib_t.found()
+    warning('did not find zlib')
+  elif not cc.has_header('zlib.h',
+      args: test_c_args, include_directories: postgres_inc,
+      dependencies: [zlib_t], required: zlibopt.enabled())
+    warning('zlib header not found')
+  elif not cc.has_type('z_streamp',
+      dependencies: [zlib_t], prefix: '#include <zlib.h>',
+      args: test_c_args, include_directories: postgres_inc)
+    if zlibopt.enabled()
+      error('zlib version is too old')
+    else
+      warning('zlib version is too old')
+    endif
+  else
+    zlib = zlib_t
+  endif
+
+  if zlib.found()
+    cdata.set('HAVE_LIBZ', 1)
+  endif
+endif
+
+
+
+###############################################################
+# Library: tap test dependencies
+###############################################################
+
+# Check whether tap tests are enabled or not
+tap_tests_enabled = false
+tapopt = get_option('tap_tests')
+if not tapopt.disabled()
+  # Checking for perl modules for tap tests
+  perl_ipc_run_check = run_command(perl, 'config/check_modules.pl', check: false)
+  if perl_ipc_run_check.returncode() != 0
+    message(perl_ipc_run_check.stderr().strip())
+    if tapopt.enabled()
+      error('Additional Perl modules are required to run TAP tests.')
+    else
+      warning('Additional Perl modules are required to run TAP tests.')
+    endif
+  else
+    tap_tests_enabled = true
+  endif
+endif
+
+
+
+###############################################################
+# Library: zstd
+###############################################################
+
+zstdopt = get_option('zstd')
+if not zstdopt.disabled()
+  zstd = dependency('libzstd', required: zstdopt, version: '>=1.4.0')
+
+  if zstd.found()
+    cdata.set('USE_ZSTD', 1)
+    cdata.set('HAVE_LIBZSTD', 1)
+  endif
+
+else
+  zstd = not_found_dep
+endif
+
+
+
+###############################################################
+# Compiler tests
+###############################################################
+
+# Do we need -std=c99 to compile C99 code?
+c99_test = '''
+#include <stdbool.h>
+#include <complex.h>
+#include <tgmath.h>
+#include <inttypes.h>
+
+struct named_init_test {
+  int a;
+  int b;
+};
+
+extern void structfunc(struct named_init_test);
+
+int main(int argc, char **argv)
+{
+  struct named_init_test nit = {
+    .a = 3,
+    .b = 5,
+  };
+
+  for (int loop_var = 0; loop_var < 3; loop_var++)
+  {
+    nit.a += nit.b;
+  }
+
+  structfunc((struct named_init_test){1, 0});
+
+  return nit.a != 0;
+}
+'''
+
+if not cc.compiles(c99_test, name: 'c99', args: test_c_args)
+  if cc.compiles(c99_test, name: 'c99 with -std=c99',
+        args: test_c_args + ['-std=c99'])
+    test_c_args += '-std=c99'
+    cflags += '-std=c99'
+  else
+    error('C compiler does not support C99')
+  endif
+endif
+
+sizeof_long = cc.sizeof('long', args: test_c_args)
+cdata.set('SIZEOF_LONG', sizeof_long)
+if sizeof_long == 8
+  cdata.set('HAVE_LONG_INT_64', 1)
+  cdata.set('PG_INT64_TYPE', 'long int')
+  cdata.set_quoted('INT64_MODIFIER', 'l')
+elif sizeof_long == 4 and cc.sizeof('long long', args: test_c_args) == 8
+  cdata.set('HAVE_LONG_LONG_INT_64', 1)
+  cdata.set('PG_INT64_TYPE', 'long long int')
+  cdata.set_quoted('INT64_MODIFIER', 'll')
+else
+  error('do not know how to get a 64bit int')
+endif
+
+if host_machine.endian() == 'big'
+  cdata.set('WORDS_BIGENDIAN', 1)
+endif
+
+alignof_types = ['short', 'int', 'long', 'double']
+maxalign = 0
+foreach t : alignof_types
+  align = cc.alignment(t, args: test_c_args)
+  if maxalign < align
+    maxalign = align
+  endif
+  cdata.set('ALIGNOF_@0@'.format(t.to_upper()), align)
+endforeach
+cdata.set('MAXIMUM_ALIGNOF', maxalign)
+
+cdata.set('SIZEOF_VOID_P', cc.sizeof('void *', args: test_c_args))
+cdata.set('SIZEOF_SIZE_T', cc.sizeof('size_t', args: test_c_args))
+
+
+# Check if __int128 is a working 128 bit integer type, and if so
+# define PG_INT128_TYPE to that typename.
+#
+# This currently only detects a GCC/clang extension, but support for other
+# environments may be added in the future.
+#
+# For the moment we only test for support for 128bit math; support for
+# 128bit literals and snprintf is not required.
+if cc.links('''
+  /*
+   * We don't actually run this test, just link it to verify that any support
+   * functions needed for __int128 are present.
+   *
+   * These are globals to discourage the compiler from folding all the
+   * arithmetic tests down to compile-time constants.  We do not have
+   * convenient support for 128bit literals at this point...
+   */
+  __int128 a = 48828125;
+  __int128 b = 97656250;
+
+  int main(void)
+  {
+      __int128 c,d;
+      a = (a << 12) + 1; /* 200000000001 */
+      b = (b << 12) + 5; /* 400000000005 */
+      /* try the most relevant arithmetic ops */
+      c = a * b;
+      d = (c + b) / b;
+      /* must use the results, else compiler may optimize arithmetic away */
+      return d != a+1;
+  }''',
+  name: '__int128',
+  args: test_c_args)
+
+  buggy_int128 = false
+
+  # Use of non-default alignment with __int128 tickles bugs in some compilers.
+  # If not cross-compiling, we can test for bugs and disable use of __int128
+  # with buggy compilers.  If cross-compiling, hope for the best.
+  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83925
+  if not meson.is_cross_build()
+    r = cc.run('''
+    /* This must match the corresponding code in c.h: */
+    #if defined(__GNUC__) || defined(__SUNPRO_C) || defined(__IBMC__)
+    #define pg_attribute_aligned(a) __attribute__((aligned(a)))
+    #endif
+    typedef __int128 int128a
+    #if defined(pg_attribute_aligned)
+    pg_attribute_aligned(8)
+    #endif
+    ;
+
+    int128a holder;
+    void pass_by_val(void *buffer, int128a par) { holder = par; }
+
+    int main(void)
+    {
+        long int i64 = 97656225L << 12;
+        int128a q;
+        pass_by_val(main, (int128a) i64);
+        q = (int128a) i64;
+        return q != holder;
+    }''',
+    name: '__int128 alignment bug',
+    args: test_c_args)
+    assert(r.compiled())
+    if r.returncode() != 0
+      buggy_int128 = true
+    endif
+  endif
+
+  if not buggy_int128
+    cdata.set('PG_INT128_TYPE', '__int128')
+    cdata.set('ALIGNOF_PG_INT128_TYPE', cc.
+      alignment('__int128', args: test_c_args))
+  endif
+endif
+
+
+# Check if the C compiler knows computed gotos (gcc extension, also
+# available in at least clang).  If so, define HAVE_COMPUTED_GOTO.
+#
+# Checking whether computed gotos are supported syntax-wise ought to
+# be enough, as the syntax is otherwise illegal.
+if cc.compiles('''
+    static inline int foo(void)
+    {
+      void *labeladdrs[] = {&&my_label};
+      goto *labeladdrs[0];
+      my_label:
+      return 1;
+    }''',
+    args: test_c_args)
+  cdata.set('HAVE_COMPUTED_GOTO', 1)
+endif
+
+
+# Check if the C compiler understands _Static_assert(),
+# and define HAVE__STATIC_ASSERT if so.
+#
+# We actually check the syntax ({ _Static_assert(...) }), because we need
+# gcc-style compound expressions to be able to wrap the thing into macros.
+if cc.compiles('''
+    int main(int arg, char **argv)
+    {
+        ({ _Static_assert(1, "foo"); });
+    }
+    ''',
+    args: test_c_args)
+  cdata.set('HAVE__STATIC_ASSERT', 1)
+endif
+
+# We use <stdbool.h> if we have it and it declares type bool as having
+# size 1.  Otherwise, c.h will fall back to declaring bool as unsigned char.
+if cc.has_type('_Bool', args: test_c_args) \
+  and cc.has_type('bool', prefix: '#include <stdbool.h>', args: test_c_args) \
+  and cc.sizeof('bool', prefix: '#include <stdbool.h>', args: test_c_args) == 1
+  cdata.set('HAVE__BOOL', 1)
+  cdata.set('PG_USE_STDBOOL', 1)
+endif
+
+
+# Need to check a call with %m because netbsd supports gnu_printf but emits a
+# warning for each use of %m.
+printf_attributes = ['gnu_printf', '__syslog__', 'printf']
+testsrc = '''
+extern void emit_log(int ignore, const char *fmt,...) __attribute__((format(@0@, 2,3)));
+static void call_log(void)
+{
+    emit_log(0, "error: %s: %m", "foo");
+}
+'''
+attrib_error_args = cc.get_supported_arguments('-Werror=format', '-Werror=ignored-attributes')
+foreach a : printf_attributes
+  if cc.compiles(testsrc.format(a),
+      args: test_c_args + attrib_error_args, name: 'format ' + a)
+    cdata.set('PG_PRINTF_ATTRIBUTE', a)
+    break
+  endif
+endforeach
+
+if cc.has_function_attribute('visibility:default') and \
+  cc.has_function_attribute('visibility:hidden')
+  cdata.set('HAVE_VISIBILITY_ATTRIBUTE', 1)
+endif
+
+# Only newer versions of meson know not to apply gnu_symbol_visibility =
+# inlineshidden to C code as well... Any either way, we want to put these
+# flags into exported files (pgxs, .pc files).
+if cdata.has('HAVE_VISIBILITY_ATTRIBUTE')
+  cflags_mod += '-fvisibility=hidden'
+  cxxflags_mod += ['-fvisibility=hidden', '-fvisibility-inlines-hidden']
+  ldflags_mod += '-fvisibility=hidden'
+endif
+
+# Check if various builtins exist. Some builtins are tested separately,
+# because we want to test something more complicated than the generic case.
+builtins = [
+  'bswap16',
+  'bswap32',
+  'bswap64',
+  'clz',
+  'ctz',
+  'constant_p',
+  'frame_address',
+  'popcount',
+  'unreachable',
+]
+
+foreach builtin : builtins
+  fname = '__builtin_@0@'.format(builtin)
+  if cc.has_function(fname, args: test_c_args)
+    cdata.set('HAVE@0@'.format(fname.to_upper()), 1)
+  endif
+endforeach
+
+# Check if the C compiler understands __builtin_types_compatible_p,
+# and define HAVE__BUILTIN_TYPES_COMPATIBLE_P if so.
+#
+# We check usage with __typeof__, though it's unlikely any compiler would
+# have the former and not the latter.
+if cc.compiles('''
+    static int x;
+    static int y[__builtin_types_compatible_p(__typeof__(x), int)];
+    ''',
+    name: '__builtin_types_compatible_p',
+    args: test_c_args)
+  cdata.set('HAVE__BUILTIN_TYPES_COMPATIBLE_P', 1)
+endif
+
+# Check if the C compiler understands __builtin_$op_overflow(),
+# and define HAVE__BUILTIN_OP_OVERFLOW if so.
+#
+# Check for the most complicated case, 64 bit multiplication, as a
+# proxy for all of the operations.  To detect the case where the compiler
+# knows the function but library support is missing, we must link not just
+# compile, and store the results in global variables so the compiler doesn't
+# optimize away the call.
+if cc.links('''
+    INT64 a = 1;
+    INT64 b = 1;
+    INT64 result;
+
+    int main(void)
+    {
+        return __builtin_mul_overflow(a, b, &result);
+    }''',
+    name: '__builtin_mul_overflow',
+    args: test_c_args + ['-DINT64=@0@'.format(cdata.get('PG_INT64_TYPE'))],
+    )
+  cdata.set('HAVE__BUILTIN_OP_OVERFLOW', 1)
+endif
+
+# XXX: The configure.ac check for __cpuid() is broken, we don't copy that
+# here. To prevent problems due to two detection methods working, stop
+# checking after one.
+if cc.links('''
+    #include <cpuid.h>
+    int main(int arg, char **argv)
+    {
+        unsigned int exx[4] = {0, 0, 0, 0};
+        __get_cpuid(1, &exx[0], &exx[1], &exx[2], &exx[3]);
+    }
+    ''', name: '__get_cpuid',
+    args: test_c_args)
+  cdata.set('HAVE__GET_CPUID', 1)
+elif cc.links('''
+    #include <intrin.h>
+    int main(int arg, char **argv)
+    {
+        unsigned int exx[4] = {0, 0, 0, 0};
+        __cpuid(exx, 1);
+    }
+    ''', name: '__cpuid',
+    args: test_c_args)
+  cdata.set('HAVE__CPUID', 1)
+endif
+
+
+
+###############################################################
+# Compiler flags
+###############################################################
+
+common_functional_flags = [
+  # Disable strict-aliasing rules; needed for gcc 3.3+
+  '-fno-strict-aliasing',
+  # Disable optimizations that assume no overflow; needed for gcc 4.3+
+  '-fwrapv',
+  '-fexcess-precision=standard',
+]
+
+cflags += cc.get_supported_arguments(common_functional_flags)
+if llvm.found()
+  cxxflags += cpp.get_supported_arguments(common_functional_flags)
+endif
+
+vectorize_cflags = cc.get_supported_arguments(['-ftree-vectorize'])
+unroll_loops_cflags = cc.get_supported_arguments(['-funroll-loops'])
+
+common_warning_flags = [
+  '-Wmissing-prototypes',
+  '-Wpointer-arith',
+  # Really don't want VLAs to be used in our dialect of C
+  '-Werror=vla',
+  # On macOS, complain about usage of symbols newer than the deployment target
+  '-Werror=unguarded-availability-new',
+  '-Wendif-labels',
+  '-Wmissing-format-attribute',
+  '-Wimplicit-fallthrough=3',
+  '-Wcast-function-type',
+  # This was included in -Wall/-Wformat in older GCC versions
+  '-Wformat-security',
+]
+
+cflags_warn += cc.get_supported_arguments(common_warning_flags)
+if llvm.found()
+  cxxflags_warn += cpp.get_supported_arguments(common_warning_flags)
+endif
+
+# A few places with imported code get a pass on -Wdeclaration-after-statement, remember
+# the result for them
+if cc.has_argument('-Wdeclaration-after-statement')
+  cflags_warn += '-Wdeclaration-after-statement'
+  using_declaration_after_statement_warning = true
+else
+  using_declaration_after_statement_warning = false
+endif
+
+
+# The following tests want to suppress various unhelpful warnings by adding
+# -Wno-foo switches.  But gcc won't complain about unrecognized -Wno-foo
+# switches, so we have to test for the positive form and if that works,
+# add the negative form.
+
+negative_warning_flags = [
+  # Suppress clang's unhelpful unused-command-line-argument warnings.
+  'unused-command-line-argument',
+
+  # Remove clang 12+'s compound-token-split-by-macro, as this causes a lot
+  # of warnings when building plperl because of usages in the Perl headers.
+  'compound-token-split-by-macro',
+
+  # Similarly disable useless truncation warnings from gcc 8+
+  'format-truncation',
+  'stringop-truncation',
+
+  # FIXME: from andres's local config
+  'clobbered',
+  'missing-field-initializers',
+  'sign-compare',
+  'unused-parameter',
+]
+
+foreach w : negative_warning_flags
+  if cc.has_argument('-W' + w)
+    cflags_warn += '-Wno-' + w
+  endif
+  if llvm.found() and cpp.has_argument('-W' + w)
+    cxxflags_warn += '-Wno-' + w
+  endif
+endforeach
+
+# FIXME: copy "Defend against clang being used on x86-32 without SSE2 enabled"
+
+# From Project.pm
+if cc.get_id() == 'msvc'
+  cflags_warn += [
+    '/wd4018',
+    '/wd4244',
+    '/wd4273',
+    '/wd4101',
+    '/wd4102',
+    '/wd4090',
+    '/wd4267',
+  ]
+
+  cppflags += [
+    '/DWIN32',
+    '/DWINDOWS',
+    '/D__WINDOWS__',
+    '/D__WIN32__',
+    '/D_CRT_SECURE_NO_DEPRECATE',
+    '/D_CRT_NONSTDC_NO_DEPRECATE',
+  ]
+
+  # We never need export libraries. As link.exe reports their creation, they
+  # are unnecessarily noisy. Similarly, we don't need import library for
+  # modules, we only import them dynamically, and they're also noisy.
+  ldflags += '/NOEXP'
+  ldflags_mod += '/NOIMPLIB'
+endif
+
+
+###############################################################
+# Atomics
+###############################################################
+
+if not get_option('spinlocks')
+  warning('Not using spinlocks will cause poor performance')
+else
+  cdata.set('HAVE_SPINLOCKS', 1)
+endif
+
+if not get_option('atomics')
+  warning('Not using atomics will cause poor performance')
+else
+  # XXX: perhaps we should require some atomics support in this case these
+  # days?
+  cdata.set('HAVE_ATOMICS', 1)
+
+  atomic_checks = [
+    {'name': 'HAVE_GCC__SYNC_CHAR_TAS',
+     'desc': '__sync_lock_test_and_set(char)',
+     'test': '''
+char lock = 0;
+__sync_lock_test_and_set(&lock, 1);
+__sync_lock_release(&lock);'''},
+
+    {'name': 'HAVE_GCC__SYNC_INT32_TAS',
+     'desc': '__sync_lock_test_and_set(int32)',
+     'test': '''
+int lock = 0;
+__sync_lock_test_and_set(&lock, 1);
+__sync_lock_release(&lock);'''},
+
+    {'name': 'HAVE_GCC__SYNC_INT32_CAS',
+     'desc': '__sync_val_compare_and_swap(int32)',
+     'test': '''
+int val = 0;
+__sync_val_compare_and_swap(&val, 0, 37);'''},
+
+    {'name': 'HAVE_GCC__SYNC_INT64_CAS',
+     'desc': '__sync_val_compare_and_swap(int64)',
+     'test': '''
+INT64 val = 0;
+__sync_val_compare_and_swap(&val, 0, 37);'''},
+
+    {'name': 'HAVE_GCC__ATOMIC_INT32_CAS',
+     'desc': ' __atomic_compare_exchange_n(int32)',
+     'test': '''
+int val = 0;
+int expect = 0;
+__atomic_compare_exchange_n(&val, &expect, 37, 0, __ATOMIC_SEQ_CST, __ATOMIC_RELAXED);'''},
+
+    {'name': 'HAVE_GCC__ATOMIC_INT64_CAS',
+     'desc': ' __atomic_compare_exchange_n(int64)',
+     'test': '''
+INT64 val = 0;
+INT64 expect = 0;
+__atomic_compare_exchange_n(&val, &expect, 37, 0, __ATOMIC_SEQ_CST, __ATOMIC_RELAXED);'''},
+  ]
+
+  foreach check : atomic_checks
+    test = '''
+int main(void)
+{
+@0@
+}'''.format(check['test'])
+
+    cdata.set(check['name'],
+      cc.links(test,
+        name: check['desc'],
+        args: test_c_args + ['-DINT64=@0@'.format(cdata.get('PG_INT64_TYPE'))]) ? 1 : false
+    )
+  endforeach
+
+endif
+
+
+
+###############################################################
+# Select CRC-32C implementation.
+#
+# If we are targeting a processor that has Intel SSE 4.2 instructions, we can
+# use the special CRC instructions for calculating CRC-32C. If we're not
+# targeting such a processor, but we can nevertheless produce code that uses
+# the SSE intrinsics, perhaps with some extra CFLAGS, compile both
+# implementations and select which one to use at runtime, depending on whether
+# SSE 4.2 is supported by the processor we're running on.
+#
+# Similarly, if we are targeting an ARM processor that has the CRC
+# instructions that are part of the ARMv8 CRC Extension, use them. And if
+# we're not targeting such a processor, but can nevertheless produce code that
+# uses the CRC instructions, compile both, and select at runtime.
+###############################################################
+
+have_optimized_crc = false
+cflags_crc = []
+if host_cpu == 'x86' or host_cpu == 'x86_64'
+
+  if cc.get_id() == 'msvc'
+    cdata.set('USE_SSE42_CRC32C', false)
+    cdata.set('USE_SSE42_CRC32C_WITH_RUNTIME_CHECK', 1)
+    have_optimized_crc = true
+  else
+
+    prog = '''
+#include <nmmintrin.h>
+
+int main(void)
+{
+    unsigned int crc = 0;
+    crc = _mm_crc32_u8(crc, 0);
+    crc = _mm_crc32_u32(crc, 0);
+    /* return computed value, to prevent the above being optimized away */
+    return crc == 0;
+}
+'''
+
+    if cc.links(prog, name: '_mm_crc32_u8 and _mm_crc32_u32 without -msse4.2',
+          args: test_c_args)
+      # Use Intel SSE 4.2 unconditionally.
+      cdata.set('USE_SSE42_CRC32C', 1)
+      have_optimized_crc = true
+    elif cc.links(prog, name: '_mm_crc32_u8 and _mm_crc32_u32 with -msse4.2',
+          args: test_c_args + ['-msse4.2'])
+      # Use Intel SSE 4.2, with runtime check. The CPUID instruction is needed for
+      # the runtime check.
+      cflags_crc += '-msse4.2'
+      cdata.set('USE_SSE42_CRC32C', false)
+      cdata.set('USE_SSE42_CRC32C_WITH_RUNTIME_CHECK', 1)
+      have_optimized_crc = true
+    endif
+
+  endif
+
+elif host_cpu == 'arm' or host_cpu == 'aarch64'
+
+  prog = '''
+#include <arm_acle.h>
+
+int main(void)
+{
+    unsigned int crc = 0;
+    crc = __crc32cb(crc, 0);
+    crc = __crc32ch(crc, 0);
+    crc = __crc32cw(crc, 0);
+    crc = __crc32cd(crc, 0);
+
+    /* return computed value, to prevent the above being optimized away */
+    return crc == 0;
+}
+'''
+
+  if cc.links(prog, name: '__crc32cb, __crc32ch, __crc32cw, and __crc32cd without -march=armv8-a+crc',
+      args: test_c_args)
+    # Use ARM CRC Extension unconditionally
+    cdata.set('USE_ARMV8_CRC32C', true)
+    have_optimized_crc = true
+  elif cc.links(prog, name: '__crc32cb, __crc32ch, __crc32cw, and __crc32cd with -march=armv8-a+crc',
+      args: test_c_args + ['-march=armv8-a+crc'])
+    # Use ARM CRC Extension, with runtime check
+    cflags_crc += '-march=armv8-a+crc'
+    cdata.set('USE_ARMV8_CRC32C', false)
+    cdata.set('USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK', 1)
+    have_optimized_crc = true
+  endif
+endif
+
+if not have_optimized_crc
+  # fall back to slicing-by-8 algorithm, which doesn't require any special CPU
+  # support.
+  cdata.set('USE_SLICING_BY_8_CRC32C', 1)
+endif
+
+
+
+###############################################################
+# Other CPU specific stuff
+###############################################################
+
+if host_cpu == 'x86_64'
+
+  if cc.compiles('''
+      void main(void)
+      {
+          long long x = 1; long long r;
+          __asm__ __volatile__ (" popcntq %1,%0\n" : "=q"(r) : "rm"(x));
+      }''',
+      name: '@0@: popcntq instruction'.format(host_cpu),
+      args: test_c_args)
+    cdata.set('HAVE_X86_64_POPCNTQ', 1)
+  endif
+
+elif host_cpu == 'ppc' or host_cpu == 'ppc64'
+  # Check if compiler accepts "i"(x) when __builtin_constant_p(x).
+  if cdata.has('HAVE__BUILTIN_CONSTANT_P')
+    if cc.compiles('''
+      static inline int
+      addi(int ra, int si)
+      {
+          int res = 0;
+          if (__builtin_constant_p(si))
+              __asm__ __volatile__(
+                  " addi %0,%1,%2\n" : "=r"(res) : "b"(ra), "i"(si));
+          return res;
+      }
+      int test_adds(int x) { return addi(3, x) + addi(x, 5); }
+      ''',
+      args: test_c_args)
+      cdata.set('HAVE_I_CONSTRAINT__BUILTIN_CONSTANT_P', 1)
+    endif
+  endif
+endif
+
+
+
+###############################################################
+# Library / OS tests
+###############################################################
+
+# XXX: Might be worth conditioning some checks on the OS, to avoid doing
+# unnecessary checks over and over, particularly on windows.
+header_checks = [
+  'atomic.h',
+  'copyfile.h',
+  'crtdefs.h',
+  'execinfo.h',
+  'getopt.h',
+  'ifaddrs.h',
+  'langinfo.h',
+  'mbarrier.h',
+  'stdbool.h',
+  'strings.h',
+  'sys/epoll.h',
+  'sys/event.h',
+  'sys/personality.h',
+  'sys/prctl.h',
+  'sys/procctl.h',
+  'sys/signalfd.h',
+  'sys/ucred.h',
+  'termios.h',
+  'ucred.h',
+]
+
+foreach header : header_checks
+  varname = 'HAVE_' + header.underscorify().to_upper()
+
+  # Emulate autoconf behaviour of not-found->undef, found->1
+  found = cc.has_header(header,
+    include_directories: postgres_inc, args: test_c_args)
+  cdata.set(varname, found ? 1 : false,
+            description: 'Define to 1 if you have the <@0@> header file.'.format(header))
+endforeach
+
+
+decl_checks = [
+  ['F_FULLFSYNC', 'fcntl.h'],
+  ['fdatasync', 'unistd.h'],
+  ['posix_fadvise', 'fcntl.h'],
+  ['strlcat', 'string.h'],
+  ['strlcpy', 'string.h'],
+  ['strnlen', 'string.h'],
+]
+
+# Need to check for function declarations for these functions, because
+# checking for library symbols wouldn't handle deployment target
+# restrictions on macOS
+decl_checks += [
+  ['preadv', 'sys/uio.h'],
+  ['pwritev', 'sys/uio.h'],
+]
+
+foreach c : decl_checks
+  func = c.get(0)
+  header = c.get(1)
+  args = c.get(2, {})
+  varname = 'HAVE_DECL_' + func.underscorify().to_upper()
+
+  found = cc.has_header_symbol(header, func,
+    args: test_c_args, include_directories: postgres_inc,
+    kwargs: args)
+  cdata.set10(varname, found, description:
+'''Define to 1 if you have the declaration of `@0@', and to 0 if you
+   don't.'''.format(func))
+endforeach
+
+
+
+if cc.has_type('struct cmsgcred',
+    args: test_c_args + ['@0@'.format(cdata.get('HAVE_SYS_UCRED_H')) == 'false' ? '' : '-DHAVE_SYS_UCRED_H'],
+    include_directories: postgres_inc,
+    prefix: '''
+#include <sys/socket.h>
+#include <sys/param.h>
+#ifdef HAVE_SYS_UCRED_H
+#include <sys/ucred.h>
+#endif''')
+  cdata.set('HAVE_STRUCT_CMSGCRED', 1)
+else
+  cdata.set('HAVE_STRUCT_CMSGCRED', false)
+endif
+
+if cc.has_type('struct option',
+    args: test_c_args, include_directories: postgres_inc,
+    prefix: '@0@'.format(cdata.get('HAVE_GETOPT_H')) == '1' ? '#include <getopt.h>' : '')
+  cdata.set('HAVE_STRUCT_OPTION', 1)
+endif
+
+
+foreach c : ['opterr', 'optreset']
+  varname = 'HAVE_INT_' + c.underscorify().to_upper()
+
+  if cc.links('''
+#include <unistd.h>
+int main(void)
+{
+    extern int @0@;
+    @0@ = 1;
+}
+'''.format(c), name: c, args: test_c_args)
+    cdata.set(varname, 1)
+  else
+    cdata.set(varname, false)
+  endif
+endforeach
+
+if cc.has_type('socklen_t',
+    args: test_c_args, include_directories: postgres_inc,
+    prefix: '''
+#include <sys/socket.h>''')
+  cdata.set('HAVE_SOCKLEN_T', 1)
+endif
+
+if cc.has_member('struct sockaddr', 'sa_len',
+    args: test_c_args, include_directories: postgres_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <sys/socket.h>''')
+  cdata.set('HAVE_STRUCT_SOCKADDR_SA_LEN', 1)
+endif
+
+if cc.has_member('struct tm', 'tm_zone',
+    args: test_c_args, include_directories: postgres_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <time.h>
+''')
+  cdata.set('HAVE_STRUCT_TM_TM_ZONE', 1)
+endif
+
+if cc.compiles('''
+#include <time.h>
+extern int foo(void);
+int foo(void)
+{
+    return timezone / 60;
+}
+''',
+    name: 'Check if the global variable `timezone\' exists',
+    args: test_c_args, include_directories: postgres_inc)
+  cdata.set('HAVE_INT_TIMEZONE', 1)
+else
+  cdata.set('HAVE_INT_TIMEZONE', false)
+endif
+
+if cc.has_type('union semun',
+    args: test_c_args,
+    include_directories: postgres_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+''')
+  cdata.set('HAVE_UNION_SEMUN', 1)
+endif
+
+if cc.compiles('''
+#include <string.h>
+int main(void)
+{
+  char buf[100];
+  switch (strerror_r(1, buf, sizeof(buf)))
+  { case 0: break; default: break; }
+}''',
+    name: 'strerror_r',
+    args: test_c_args, include_directories: postgres_inc)
+  cdata.set('STRERROR_R_INT', 1)
+else
+  cdata.set('STRERROR_R_INT', false)
+endif
+
+# Check for the locale_t type and find the right header file.  macOS
+# needs xlocale.h; standard is locale.h, but glibc also has an
+# xlocale.h file that we should not use.
+if cc.has_type('locale_t', prefix: '#include <locale.h>')
+  cdata.set('HAVE_LOCALE_T', 1)
+elif cc.has_type('locale_t', prefix: '#include <xlocale.h>')
+  cdata.set('HAVE_LOCALE_T', 1)
+  cdata.set('LOCALE_T_IN_XLOCALE', 1)
+endif
+
+# Check if the C compiler understands typeof or a variant.  Define
+# HAVE_TYPEOF if so, and define 'typeof' to the actual key word.
+foreach kw : ['typeof', '__typeof__', 'decltype']
+  if cc.compiles('''
+int main(void)
+{
+    int x = 0;
+    @0@(x) y;
+    y = x;
+    return y;
+}
+'''.format(kw),
+    name: 'typeof()',
+    args: test_c_args, include_directories: postgres_inc)
+
+    cdata.set('HAVE_TYPEOF', 1)
+    if kw != 'typeof'
+      cdata.set('typeof', kw)
+    endif
+
+    break
+  endif
+endforeach
+
+
+# MSVC doesn't cope well with defining restrict to __restrict, the
+# spelling it understands, because it conflicts with
+# __declspec(restrict). Therefore we define pg_restrict to the
+# appropriate definition, which presumably won't conflict.
+#
+# FIXME: We used to check if restrict is available, but it really should these
+# days?
+#
+# FIXME: Historically we allowed platforms to disable restrict in template
+# files. Is that really still necessary?
+cdata.set('pg_restrict', '__restrict')
+
+
+if cc.links('''
+#include <machine/vmparam.h>
+#include <sys/exec.h>
+
+int main(void)
+{
+    PS_STRINGS->ps_nargvstr = 1;
+    PS_STRINGS->ps_argvstr = "foo";
+}
+''',
+  name: 'PS_STRINGS', args: test_c_args)
+  cdata.set('HAVE_PS_STRINGS', 1)
+else
+  cdata.set('HAVE_PS_STRINGS', false)
+endif
+
+
+# Most libraries are included only if they demonstrably provide a function we
+# need, but libm is an exception: always include it, because there are too
+# many compilers that play cute optimization games that will break probes for
+# standard functions such as pow().
+os_deps += cc.find_library('m', required: false)
+
+rt_dep = cc.find_library('rt', required: false)
+
+dl_dep = cc.find_library('dl', required: false)
+
+util_dep = cc.find_library('util', required: false)
+posix4_dep = cc.find_library('posix4', required: false)
+
+getopt_dep = cc.find_library('getopt', required: false)
+gnugetopt_dep = cc.find_library('gnugetopt', required: false)
+
+execinfo_dep = cc.find_library('execinfo', required: false)
+
+if host_system == 'cygwin'
+  cygipc_dep = cc.find_library('cygipc', required: false)
+else
+  cygipc_dep = not_found_dep
+endif
+
+if host_system == 'sunos'
+  socket_dep = cc.find_library('socket', required: false)
+else
+  socket_dep = not_found_dep
+endif
+
+# XXX: Might be worth conditioning some checks on the OS, to avoid doing
+# unnecessary checks over and over, particularly on windows.
+func_checks = [
+  ['_configthreadlocale', {'skip': host_system != 'windows'}],
+  ['backtrace_symbols', {'dependencies': [execinfo_dep]}],
+  ['clock_gettime', {'dependencies': [rt_dep, posix4_dep], 'define': false}],
+  ['copyfile'],
+  ['dlsym', {'dependencies': [dl_dep], 'define': false}],
+  ['explicit_bzero'],
+  ['fdatasync', {'dependencies': [rt_dep, posix4_dep], 'define': false}], # Solaris
+  ['getifaddrs'],
+  ['getopt', {'dependencies': [getopt_dep, gnugetopt_dep]}],
+  ['getopt_long', {'dependencies': [getopt_dep, gnugetopt_dep]}],
+  ['getpeereid'],
+  ['getpeerucred'],
+  ['inet_aton'],
+  ['inet_pton'],
+  ['kqueue'],
+  ['mbstowcs_l'],
+  ['memset_s'],
+  ['mkdtemp'],
+  ['posix_fadvise'],
+  ['posix_fallocate'],
+  ['ppoll'],
+  ['pstat'],
+  ['pthread_barrier_wait', {'dependencies': [thread_dep]}],
+  ['pthread_is_threaded_np', {'dependencies': [thread_dep]}],
+  ['setproctitle', {'dependencies': [util_dep]}],
+  ['setproctitle_fast'],
+  ['shm_open', {'dependencies': [rt_dep], 'define': false}],
+  ['shm_unlink', {'dependencies': [rt_dep], 'define': false}],
+  ['shmget', {'dependencies': [cygipc_dep], 'define': false}],
+  ['socket', {'dependencies': [socket_dep], 'define': false}],
+  ['strchrnul'],
+  ['strerror_r', {'dependencies': [thread_dep]}],
+  ['strlcat'],
+  ['strlcpy'],
+  ['strnlen'],
+  ['strsignal'],
+  ['sync_file_range'],
+  ['syncfs'],
+  ['uselocale'],
+  ['wcstombs_l'],
+]
+
+foreach c : func_checks
+  func = c.get(0)
+  kwargs = c.get(1, {})
+  deps = kwargs.get('dependencies', [])
+
+  if kwargs.get('skip', false)
+    continue
+  endif
+
+  varname = 'HAVE_' + func.underscorify().to_upper()
+
+  found = cc.has_function(func, args: test_c_args)
+
+  if not found
+    foreach dep : deps
+      if not dep.found()
+        continue
+      endif
+      found = cc.has_function(func, args: test_c_args,
+                              dependencies: [dep])
+      if found
+        os_deps += dep
+        break
+      endif
+    endforeach
+  endif
+
+  if kwargs.get('define', true)
+    # Emulate autoconf behaviour of not-found->undef, found->1
+    cdata.set(varname, found  ? 1 : false,
+              description: 'Define to 1 if you have the `@0@\' function.'.format(func))
+  endif
+endforeach
+
+
+if cc.has_function('syslog', args: test_c_args) and \
+    cc.check_header('syslog.h', args: test_c_args)
+  cdata.set('HAVE_SYSLOG', 1)
+endif
+
+
+gen_export_kwargs = {
+  'input': 'exports.txt',
+  'output': '@BASENAME@.'+export_file_suffix,
+  'command': [perl, files('src/tools/gen_export.pl'),
+   '--format', export_file_format,
+   '--input', '@INPUT0@', '--output', '@OUTPUT0@'],
+  'build_by_default': false,
+  'install': false,
+}
+
+
+# FIXME: needs some autoconfiguration
+if host_system == 'darwin'
+  cdata.set('USE_SYSV_SEMAPHORES', 1)
+  cdata.set('USE_SYSV_SHARED_MEMORY', 1)
+elif host_system == 'openbsd' or host_system == 'netbsd'
+  cdata.set('USE_SYSV_SEMAPHORES', 1)
+  cdata.set('USE_SYSV_SHARED_MEMORY', 1)
+elif host_system == 'windows'
+  cdata.set('USE_WIN32_SEMAPHORES', 1)
+  cdata.set('USE_WIN32_SHARED_MEMORY', 1)
+else
+  cdata.set('USE_UNNAMED_POSIX_SEMAPHORES', 1)
+  cdata.set('USE_SYSV_SHARED_MEMORY', 1)
+endif
+
+cdata.set('MEMSET_LOOP_LIMIT', memset_loop_limit)
+cdata.set_quoted('DLSUFFIX', dlsuffix)
+
+add_project_arguments(cflags, language: ['c'])
+add_project_arguments(cppflags, language: ['c'])
+add_project_arguments(cflags_warn, language: ['c'])
+add_project_arguments(cxxflags, language: ['cpp'])
+add_project_arguments(cppflags, language: ['cpp'])
+add_project_arguments(cxxflags_warn, language: ['cpp'])
+add_project_link_arguments(ldflags, language: ['c', 'cpp'])
+
+
+###############################################################
+# Threading
+###############################################################
+
+# XXX: About to rely on thread safety in the autoconf build, so not worth
+# implementing a fallback.
+cdata.set('ENABLE_THREAD_SAFETY', 1)
+
+
+
+###############################################################
+# NLS / Gettext
+###############################################################
+
+i18n = import('i18n')
+nlsopt = get_option('nls')
+libintl = not_found_dep
+
+if not nlsopt.disabled()
+  # otherwise there'd be lots of
+  # "Gettext not found, all translation (po) targets will be ignored."
+  # warnings if not found.
+  msgfmt = find_program('msgfmt', required: nlsopt.enabled(), native: true)
+
+  # meson 0.59 has this wrapped in dependency('int')
+  if msgfmt.found() and \
+    cc.check_header('libintl.h', args: test_c_args, required: nlsopt)
+
+    # in libc
+    if cc.has_function('ngettext')
+      libintl = declare_dependency()
+    else
+      libintl = cc.find_library('intl',
+        has_headers: ['libintl.h'], required: nlsopt,
+        header_include_directories: postgres_inc,
+        dirs: test_lib_d)
+    endif
+  endif
+
+  if libintl.found()
+    cdata.set('ENABLE_NLS', 1)
+  endif
+endif
+
+
+
+###############################################################
+# Build
+###############################################################
+
+# Collect a number of lists of things while recursing through the source
+# tree. Later steps then can use those.
+
+test_deps = []
+backend_targets = []
+
+
+# Define the tests to distribute them to the correct test styles later
+tests = []
+
+
+# Default options for targets
+
+# First identify rpaths
+bin_install_rpaths = []
+lib_install_rpaths = []
+mod_install_rpaths = []
+
+# add extra_lib_dirs to rpath
+bin_install_rpaths += postgres_lib_d
+lib_install_rpaths += postgres_lib_d
+mod_install_rpaths += postgres_lib_d
+
+
+# Define arguments for default targets
+
+default_target_args = {
+  'implicit_include_directories': false,
+  'install': true,
+}
+
+default_lib_args = default_target_args + {
+  'name_prefix': '',
+  'install_rpath': ':'.join(lib_install_rpaths),
+}
+
+internal_lib_args = default_lib_args + {
+  'build_by_default': false,
+  'install': false,
+}
+
+default_mod_args = default_lib_args + {
+  'name_prefix': '',
+  'install_dir': dir_lib_pkg,
+  'install_rpath': ':'.join(mod_install_rpaths),
+}
+
+default_bin_args = default_target_args + {
+  'install_dir': dir_bin,
+  'install_rpath': ':'.join(bin_install_rpaths),
+}
+
+
+
+###
+### windows resources related stuff
+###
+
+pg_ico = meson.source_root() / 'src' / 'port' / 'win32.ico'
+win32ver_rc_in = files('src/port/win32ver.rc.in')
+rcgen = find_program('src/tools/rcgen', native: true)
+
+rcgen_cmd = [rcgen, '@INPUT@', '-o', '@OUTPUT@', '--depfile', '@DEPFILE@']
+rcgen_bin_cmd = rcgen_cmd + [
+  '--VFT_TYPE', 'VFT_APP',
+  '--FILEENDING', 'exe',
+  '--ICO', pg_ico,
+]
+
+rcgen_lib_cmd = rcgen_cmd + [
+  '--VFT_TYPE', 'VFT_DLL',
+  '--FILEENDING', 'dll',
+]
+
+rcgen_inc = [postgres_inc]
+
+rcgen_kw = {
+  'input': win32ver_rc_in,
+  'output': 'win32ver.rc',
+  'depfile': '@PLAINNAME@.d',
+}
+
+rccompile_kw = {
+  'include_directories': rcgen_inc,
+}
+
+
+# headers that the whole build tree depends on
+generated_headers = []
+# headers that the backend build depends on
+generated_backend_headers = []
+# configure_files() output, needs a way of converting to file names
+configure_files = []
+
+# generated files that might conflict with a partial in-tree autoconf build
+generated_sources = []
+# same, for paths that differ between autoconf / meson builds
+# elements are [dir, [files]]
+generated_sources_ac = {}
+
+
+# First visit src/include - all targets creating headers are defined
+# within. That makes it easy to add the necessary dependencies for the
+# subsequent build steps.
+
+subdir('src/include')
+
+subdir('config')
+
+# Then through src/port and src/common, as most other things depend on them
+
+frontend_port_code = declare_dependency(
+  compile_args: ['-DFRONTEND'],
+  include_directories: [postgres_inc],
+  sources: [errcodes],
+  dependencies: os_deps,
+)
+
+backend_port_code = declare_dependency(
+  compile_args: ['-DBUILDING_DLL'],
+  include_directories: [postgres_inc],
+  sources: [errcodes],
+  dependencies: os_deps,
+)
+
+subdir('src/port')
+
+frontend_common_code = declare_dependency(
+  compile_args: ['-DFRONTEND'],
+  include_directories: [postgres_inc],
+  sources: generated_headers,
+  dependencies: os_deps,
+)
+
+backend_common_code = declare_dependency(
+  compile_args: ['-DBUILDING_DLL'],
+  include_directories: [postgres_inc],
+  sources: generated_headers,
+)
+
+subdir('src/common')
+
+frontend_shlib_code = declare_dependency(
+  compile_args: ['-DFRONTEND'],
+  include_directories: [postgres_inc],
+  link_args: ldflags_sl,
+  link_with: [pgport_shlib, common_shlib],
+  sources: generated_headers,
+  dependencies: [os_deps, libintl],
+)
+
+libpq_deps = [
+  frontend_shlib_code,
+  thread_dep,
+
+  gssapi,
+  ldap,
+  libintl,
+  ssl,
+]
+
+subdir('src/interfaces/libpq')
+# fe_utils depends on libpq
+subdir('src/fe_utils')
+
+frontend_code = declare_dependency(
+  include_directories: [postgres_inc],
+  link_with: [fe_utils, common_static, pgport_static],
+  sources: generated_headers,
+  dependencies: [os_deps, libintl],
+)
+
+backend_both_deps += [
+  thread_dep,
+  bsd_auth,
+  gssapi,
+  icu,
+  icu_i18n,
+  ldap,
+  libintl,
+  libxml,
+  lz4,
+  pam,
+  ssl,
+  systemd,
+  zlib,
+  zstd,
+]
+
+backend_mod_deps = backend_both_deps + os_deps
+
+backend_code = declare_dependency(
+  compile_args: ['-DBUILDING_DLL'],
+  include_directories: [postgres_inc],
+  link_args: ldflags_be,
+  link_with: [],
+  sources: generated_headers + generated_backend_headers,
+  dependencies: os_deps + backend_both_deps + backend_deps,
+)
+
+# src/backend/meson.build defines backend_mod_code used for extension
+# libraries.
+
+
+# Then through the main sources. That way contrib can have dependencies on
+# main sources. Note that this explicitly doesn't enter src/test, right now a
+# few regression tests depend on contrib files.
+
+subdir('src')
+
+subdir('contrib')
+
+subdir('src/test')
+subdir('src/interfaces/libpq/test')
+subdir('src/interfaces/ecpg/test')
+
+subdir('doc/src/sgml')
+
+generated_sources_ac += {'': ['GNUmakefile']}
+
+
+# If there are any files in the source directory that we also generate in the
+# build directory, they might get preferred over the newly generated files,
+# e.g. because of a #include "file", which always will search in the current
+# directory first.
+message('checking for file conflicts between source and build directory')
+conflicting_files = []
+potentially_conflicting_files_t = []
+potentially_conflicting_files_t += generated_headers
+potentially_conflicting_files_t += generated_backend_headers
+potentially_conflicting_files_t += generated_backend_sources
+potentially_conflicting_files_t += generated_sources
+
+potentially_conflicting_files = []
+
+# convert all sources of potentially conflicting files into uniform shape
+foreach t : potentially_conflicting_files_t
+  potentially_conflicting_files += t.full_path()
+endforeach
+foreach t : configure_files
+  t = '@0@'.format(t)
+  potentially_conflicting_files += meson.current_build_dir() / t
+endforeach
+foreach sub, fnames : generated_sources_ac
+  sub = meson.build_root() / sub
+  foreach fname : fnames
+    potentially_conflicting_files += sub / fname
+  endforeach
+endforeach
+
+# find and report conflicting files
+foreach build_path : potentially_conflicting_files
+  build_path = host_system == 'windows' ? fs.as_posix(build_path) : build_path
+  # str.replace is in 0.56
+  src_path = meson.current_source_dir() / build_path.split(meson.current_build_dir() / '')[1]
+  if fs.exists(src_path) or fs.is_symlink(src_path)
+    conflicting_files += src_path
+  endif
+endforeach
+# XXX: Perhaps we should generate a file that would clean these up? The list
+# can be long.
+if conflicting_files.length() > 0
+  errmsg_cleanup = '''
+Conflicting files in source directory:
+  @0@
+
+The conflicting files need to be removed, either by removing the files listed
+above, or by running configure and then make maintainer clean.
+'''
+  errmsg_cleanup = errmsg_cleanup.format(' '.join(conflicting_files))
+  error(errmsg_nonclean_base.format(errmsg_cleanup))
+endif
+
+
+
+###############################################################
+# Test prep
+###############################################################
+
+# The determination of where a DESTDIR install points to is ugly, it's somewhat hard
+# to combine two absolute paths portably...
+
+prefix = get_option('prefix')
+
+test_prefix = prefix
+
+if fs.is_absolute(get_option('prefix'))
+  if host_system == 'windows'
+    if prefix.split(':\\').length() == 1
+      # just a drive
+      test_prefix = ''
+    else
+      test_prefix = prefix.split(':\\')[1]
+    endif
+  else
+    assert(prefix.startswith('/'))
+    test_prefix = './@0@'.format(prefix)
+  endif
+endif
+
+# DESTDIR for the installation used to run tests in
+test_install_destdir = meson.build_root() / 'tmp_install/'
+# DESTDIR + prefix appropriately munged
+test_install_location = test_install_destdir / test_prefix
+
+
+meson_install_args = meson_args + ['install'] + {
+    'meson': ['--quiet', '--only-changed', '--no-rebuild'],
+    'muon': []
+}[meson_impl]
+
+test('tmp_install',
+    meson_bin, args: meson_install_args ,
+    env: {'DESTDIR':test_install_destdir},
+    priority: 100,
+    timeout: 300,
+    is_parallel: false,
+    suite: ['setup'])
+
+test_result_dir = meson.build_root() / 'testrun'
+
+
+# XXX: pg_regress doesn't assign unique ports on windows. To avoid the
+# inevitable conflicts from running tests in parallel, hackishly assign
+# different ports for different tests.
+
+testport = 40000
+
+test_env = environment()
+
+temp_install_bindir = test_install_location / get_option('bindir')
+test_env.set('PG_REGRESS', pg_regress.full_path())
+test_env.set('REGRESS_SHLIB', regress_module.full_path())
+
+# Test suites that are not safe by default but can be run if selected
+# by the user via the whitespace-separated list in variable PG_TEST_EXTRA.
+# Export PG_TEST_EXTRA so it can be checked in individual tap tests.
+test_env.set('PG_TEST_EXTRA', get_option('PG_TEST_EXTRA'))
+
+# Add the temporary installation to the library search path on platforms where
+# that works (everything but windows, basically). On windows everything
+# library-like gets installed into bindir, solving that issue.
+if library_path_var != ''
+  test_env.prepend(library_path_var, test_install_location / get_option('libdir'))
+endif
+
+
+###############################################################
+# Test Generation
+###############################################################
+
+foreach test : tests
+  test_default = {
+    'name': test['name'],
+    'sd': test['sd'],
+    'bd': test['bd'],
+  }
+  # Define all 'pg_regress' style tests
+  if 'regress' in test
+    t = test_default + test['regress']
+    test_command = [
+      t.get('test_runner', pg_regress).full_path(),
+      '--temp-instance', test_result_dir / t['name'] / 'regress' / 'tmp_check',
+      '--inputdir', t.get('inputdir', t['sd']),
+      '--expecteddir', t.get('expecteddir', t['sd']),
+      '--outputdir', test_result_dir / t['name'] / 'regress',
+      '--bindir', '',
+      '--dlpath', t['bd'],
+      '--max-concurrent-tests=20',
+      '--port=@0@'.format(testport),
+    ]
+
+    if t.has_key('regress_args')
+      test_command += t['regress_args']
+    endif
+
+    if t.has_key('schedule')
+      test_command += ['--schedule', t['schedule'],]
+    endif
+    if t.has_key('sql')
+      test_command += t['sql']
+    endif
+
+    env = test_env
+    env.prepend('PATH', temp_install_bindir, t['bd'])
+
+    test_kwargs = {
+      'suite': [t['name']],
+      'priority': 10,
+      'timeout': 1000,
+      'depends': test_deps + t.get('deps', []),
+      'env': env,
+      'args': [
+        testwrap.path(),
+        '--srcdir', t['sd'],
+        '--basedir', meson.build_root(),
+        '--testgroup', t['name'],
+        '--testname', 'regress',
+        '--', test_command,
+      ]
+    }
+
+    if t.has_key('test_kwargs')
+      test_kwargs += t['test_kwargs']
+    endif
+
+    test(t['name'] / 'regress',
+      python,
+      kwargs: test_kwargs,
+    )
+
+    testport = testport + 1
+  endif
+
+  # Define all 'isolationtester' style tests
+  if 'isolation' in test
+    t = test_default + test['isolation']
+    test_command = [
+      pg_isolation_regress.full_path(),
+      '--temp-instance', test_result_dir / t['name'] / 'isolation' / 'tmp_check',
+      '--inputdir', t['sd'],
+      '--outputdir', test_result_dir / t['name'] / 'isolation',
+      '--bindir', '',
+      '--dlpath', t['bd'],
+      '--max-concurrent-tests=20',
+      '--port=@0@'.format(testport),
+    ]
+
+    if t.has_key('regress_args')
+      test_command += t['regress_args']
+    endif
+
+    if t.has_key('schedule')
+      test_command += ['--schedule', t['schedule'],]
+    else
+      test_command += t['specs']
+    endif
+
+    env = test_env
+    env.prepend('PATH', temp_install_bindir, t['bd'])
+
+    test_kwargs = {
+      'suite': [t['name']],
+      'priority': 20,
+      'timeout': 1000,
+      'depends': test_deps + t.get('deps', []),
+      'env': env,
+      'args': [
+        testwrap.path(),
+        '--srcdir', t['sd'],
+        '--basedir', meson.build_root(),
+        '--testgroup', t['name'],
+        '--testname', 'isolation',
+        '--', test_command,
+      ]
+    }
+
+    if t.has_key('test_kwargs')
+      test_kwargs += t['test_kwargs']
+    endif
+
+    test(t['name'] / 'isolation',
+      python,
+      kwargs: test_kwargs,
+    )
+
+    testport = testport + 1
+  endif
+
+  # Define all 'tap' style tests
+  # FIXME: dependencies for each test
+  if tap_tests_enabled and 'tap' in test
+    t = test_default + test['tap']
+    test_command = [
+      perl.path(),
+      '-I', meson.source_root() / 'src/test/perl',
+      '-I', t['sd'],
+    ]
+
+    env = test_env
+
+    # Add temporary install, the build directory for non-installed binaries and
+    # also test/ for non-installed test binaries built separately.
+    env.prepend('PATH', temp_install_bindir, t['bd'], t['bd'] / 'test')
+
+    foreach name, value : t.get('env', {})
+      env.set(name, value)
+    endforeach
+
+    test_kwargs = {
+      'protocol': 'tap',
+      'suite': [t['name']],
+      'timeout': 1000,
+      'depends': test_deps + t.get('deps', []),
+      'env': env,
+    }
+
+    if t.has_key('test_kwargs')
+      test_kwargs += t['test_kwargs']
+    endif
+
+    foreach onetap : t['tests']
+      # Make tap test names prettier, remove t/ and .pl
+      onetap_p = onetap
+      if onetap_p.startswith('t/')
+        onetap_p = onetap.split('t/')[1]
+      endif
+      if onetap_p.endswith('.pl')
+        onetap_p = fs.stem(onetap_p)
+      endif
+
+      test(t['name'] / onetap_p,
+        python,
+        kwargs: test_kwargs,
+        args: [
+          testwrap.path(),
+          '--srcdir', t['sd'],
+          '--basedir', meson.build_root(),
+          '--testgroup', t['name'],
+          '--testname', onetap_p,
+          '--', test_command,
+          t['sd'] / onetap,
+        ]
+      )
+    endforeach
+  endif
+endforeach
+
+
+###############################################################
+# Pseudo targets
+###############################################################
+
+alias_target('backend', backend_targets)
+
+
+
+###############################################################
+# The End, The End, My Friend
+###############################################################
+
+if meson.version().version_compare('>=0.57')
+
+  summary(
+    {
+      'data block size': cdata.get('BLCKSZ'),
+      'WAL block size': cdata.get('XLOG_BLCKSZ'),
+      'segment size': cdata.get('RELSEG_SIZE'),
+    },
+    section: 'Data layout',
+  )
+
+  summary(
+    {
+      'host system': '@0@ @1@'.format(host_system, host_cpu),
+      'build system': '@0@ @1@'.format(build_machine.system(),
+                                       build_machine.cpu_family()),
+    },
+    section: 'System',
+  )
+
+  summary(
+    {
+      'linker': '@0@'.format(cc.get_linker_id()),
+      'C compiler': '@0@ @1@'.format(cc.get_id(), cc.version()),
+    },
+    section: 'Compiler',
+  )
+
+  summary(
+    {
+      'CPP FLAGS': ' '.join(cppflags),
+      'C FLAGS, functional': ' '.join(cflags),
+      'C FLAGS, warnings': ' '.join(cflags_warn),
+    },
+    section: 'Compiler Flags',
+  )
+
+  if llvm.found()
+    summary(
+      {
+        'C++ compiler': '@0@ @1@'.format(cpp.get_id(), cpp.version()),
+      },
+      section: 'Compiler',
+    )
+
+    summary(
+      {
+        'C++ FLAGS, functional': ' '.join(cxxflags),
+        'C++ FLAGS, warnings': ' '.join(cxxflags_warn),
+      },
+      section: 'Compiler Flags',
+    )
+  endif
+
+  summary(
+    {
+      'bison': '@0@ @1@'.format(bison.full_path(), bison_version),
+      'dtrace': dtrace,
+    },
+    section: 'Programs',
+  )
+
+  summary(
+    {
+      'bonjour': bonjour,
+      'bsd_auth': bsd_auth,
+      'gss': gssapi,
+      'icu': icu,
+      'ldap': ldap,
+      'libxml': libxml,
+      'libxslt': libxslt,
+      'llvm': llvm,
+      'lz4': lz4,
+      'nls': libintl,
+      'pam': pam,
+      'plperl': perl_dep,
+      'plpython': python3_dep,
+      'pltcl': tcl_dep,
+      'readline': readline,
+      'selinux': selinux,
+      'ssl': ssl,
+      'systemd': systemd,
+      'uuid': uuid,
+      'zlib': zlib,
+      'zstd': zstd,
+    },
+    section: 'External libraries',
+  )
+
+endif
diff --git a/meson_options.txt b/meson_options.txt
new file mode 100644
index 00000000000..f59b045a029
--- /dev/null
+++ b/meson_options.txt
@@ -0,0 +1,176 @@
+# Data layout influencing options
+
+option('blocksize', type : 'combo', choices : ['1', '2', '4', '8', '16', '32'], value : '8',
+  description: 'set relation block size in kB')
+
+option('wal_blocksize', type : 'integer', value : 8,
+  description : '''WAL block size, in kilobytes.
+This is the unit of storage and I/O within the WAL log. The default, 8 kilobytes, is suitable for most situations; but other values may be useful in special cases. The value must be a power of 2 between 1 and 64 (kilobytes). Note that changing this value requires an initdb.''')
+
+option('segsize', type : 'integer', value : 1,
+  description : '''Segment size, in gigabytes.
+Large tables are divided into multiple operating-system files, each of size equal to the segment size. This avoids problems with file size limits that exist on many platforms. The default segment size, 1 gigabyte, is safe on all supported platforms. If your operating system has "largefile" support (which most do, nowadays), you can use a larger segment size. This can be helpful to reduce the number of file descriptors consumed when working with very large tables. But be careful not to select a value larger than is supported by your platform and the file systems you intend to use. Other tools you might wish to use, such as tar, could also set limits on the usable file size. It is recommended, though not absolutely required, that this value be a power of 2. Note that changing this value requires an initdb.''')
+
+
+# Miscellaneous options
+
+option('krb_srvnam', type : 'string', value : 'postgres',
+  description : '''The default name of the Kerberos service principal used by GSSAPI.
+postgres is the default. There's usually no reason to change this unless you are building for a Windows environment, in which case it must be set to upper case POSTGRES''')
+
+option('system_tzdata', type: 'string', value: '',
+  description: 'use system time zone data in specified directory')
+
+
+# Defaults
+
+option('pgport', type : 'string', value : '5432',
+  description : '''Default port number for server and clients.
+The default is 5432. The port can always be changed later on, but if you specify it here then both server and clients will have the same default compiled in, which can be very convenient. Usually the only good reason to select a non-default value is if you intend to run multiple PostgreSQL servers on the same machine.''')
+
+
+# Developer options
+
+option('cassert', type : 'boolean', value: false,
+  description: 'enable assertion checks (for debugging)')
+
+option('tap_tests', type : 'feature', value : 'auto',
+  description : 'Whether to enable tap tests')
+
+option('PG_TEST_EXTRA', type : 'string', value: 'kerberos ldap ssl',
+  description: 'Enable selected extra tests')
+
+option('atomics', type : 'boolean', value: true,
+  description: 'whether to use atomic operations')
+
+option('spinlocks', type : 'boolean', value: true,
+  description: 'whether to use spinlocks')
+
+
+# Compilation options
+
+option('extra_include_dirs', type : 'array', value: [],
+  description: 'non-default directories to be searched for headers')
+
+option('extra_lib_dirs', type : 'array', value: [],
+  description: 'non-default directories to be searched for libs')
+
+option('extra_version', type : 'string', value: '',
+  description: 'append STRING to the PostgreSQL version number')
+
+option('darwin_sysroot', type : 'string', value: '',
+  description: 'select a non-default sysroot path')
+
+
+# External dependencies
+
+option('bonjour', type : 'feature', value: 'auto',
+  description: 'build with Bonjour support')
+
+option('bsd_auth', type : 'feature', value: 'auto',
+  description: 'build with BSD Authentication support')
+
+option('dtrace', type : 'feature', value: 'disabled',
+  description: 'DTrace support')
+
+option('gssapi', type : 'feature', value: 'auto',
+  description: 'GSSAPI support')
+
+option('icu', type : 'feature', value: 'auto',
+  description: 'ICU support')
+
+option('ldap', type : 'feature', value: 'auto',
+  description: 'LDAP support')
+
+option('libedit_preferred', type : 'boolean', value: false,
+  description: 'Prefer BSD Libedit over GNU Readline')
+
+option('libxml', type : 'feature', value: 'auto',
+  description: 'XML support')
+
+option('libxslt', type : 'feature', value: 'auto',
+  description: 'XSLT support in contrib/xml2')
+
+option('llvm', type : 'feature', value: 'disabled',
+  description: 'whether to use llvm')
+
+option('lz4', type : 'feature', value: 'auto',
+  description: 'LZ4 support')
+
+option('nls', type: 'feature', value: 'auto',
+  description: 'native language support')
+
+option('pam', type : 'feature', value: 'auto',
+  description: 'build with PAM support')
+
+option('plperl', type : 'feature', value: 'auto',
+  description: 'build Perl modules (PL/Perl)')
+
+option('plpython', type : 'feature', value: 'auto',
+  description: 'build Python modules (PL/Python)')
+
+option('pltcl', type : 'feature', value: 'auto',
+  description: 'build with TCL support')
+
+option('tcl_version', type : 'string', value : 'tcl',
+  description: 'specify TCL version')
+
+option('readline', type : 'feature', value : 'auto',
+  description: 'use GNU Readline or BSD Libedit for editing')
+
+option('selinux', type : 'feature', value : 'disabled',
+  description: 'build with SELinux support')
+
+option('ssl', type : 'combo', choices : ['none', 'openssl'], value : 'none',
+  description: 'use LIB for SSL/TLS support (openssl)')
+
+option('systemd', type : 'feature', value: 'auto',
+  description: 'build with systemd support')
+
+option('uuid', type : 'combo', choices : ['none', 'bsd', 'e2fs', 'ossp'], value : 'none',
+  description: 'build contrib/uuid-ossp using LIB')
+
+option('zlib', type : 'feature', value: 'auto',
+  description: 'whether to use zlib')
+
+option('zstd', type : 'feature', value: 'auto',
+  description: 'whether to use zstd')
+
+
+# Programs
+
+option('BISON', type : 'string', value: 'bison',
+  description: 'path to bison binary')
+
+option('DTRACE', type : 'string', value: 'dtrace',
+  description: 'path to dtrace binary')
+
+option('FLEX', type : 'string', value: 'flex',
+  description: 'path to flex binary')
+
+option('GZIP', type : 'string', value: 'gzip',
+  description: 'path to gzip binary')
+
+option('LZ4', type : 'string', value: 'lz4',
+  description: 'path to lz4 binary')
+
+option('PERL', type : 'string', value: 'perl',
+  description: 'path to perl binary')
+
+option('PROVE', type : 'string', value: 'prove',
+  description: 'path to prove binary')
+
+option('PYTHON', type : 'array', value: ['python3', 'python'],
+  description: 'path to python binary')
+
+option('SED', type : 'string', value: 'gsed',
+  description: 'path to sed binary')
+
+option('TAR', type : 'string', value: 'tar',
+  description: 'path to tar binary')
+
+option('ZSTD', type : 'string', value: 'zstd',
+  description: 'path to zstd binary')
+
+option('ZIC', type : 'string', value: 'zic',
+  description: 'path to zic binary, when cross-compiling')
diff --git a/src/meson.build b/src/meson.build
new file mode 100644
index 00000000000..a7fdd5a13ed
--- /dev/null
+++ b/src/meson.build
@@ -0,0 +1,12 @@
+# libraries that other subsystems might depend uppon first, in their
+# respective dependency order
+
+subdir('timezone')
+
+subdir('backend')
+
+subdir('bin')
+
+subdir('pl')
+
+subdir('interfaces')
diff --git a/src/timezone/meson.build b/src/timezone/meson.build
new file mode 100644
index 00000000000..e00b8e15b4b
--- /dev/null
+++ b/src/timezone/meson.build
@@ -0,0 +1,53 @@
+# files to build into backend
+timezone_sources = files(
+  'localtime.c',
+  'pgtz.c',
+  'strftime.c',
+)
+
+
+timezone_inc = include_directories('.')
+
+timezone_localtime_source = files('localtime.c')
+
+# files needed to build zic utility program
+zic_sources = files(
+   'zic.c'
+)
+
+# we now distribute the timezone data as a single file
+tzdata = files(
+  'data/tzdata.zi'
+)
+
+
+if get_option('system_tzdata') == ''
+  # FIXME: For cross builds, it would need a native built libpgport/pgcommon to
+  # build our zic. But for that we'd need to run a good chunk of the configure
+  # tests both natively and cross. Unclear if it's worth it.
+  if meson.is_cross_build()
+    zic = find_program(get_option('ZIC'), native: true, required: true)
+  else
+    zic = executable('zic', zic_sources,
+                     dependencies: [frontend_code],
+                     kwargs: default_bin_args + {'install': false}
+                    )
+  endif
+
+  tzdata = custom_target('tzdata',
+    input: tzdata,
+    output: ['timezone'],
+    command: [zic, '-d', '@OUTPUT@', '@INPUT@'],
+    install: true,
+    install_dir: dir_data,
+  )
+
+# FIXME: make sorts this - but the file isn't actually used, so ...
+abbrevs_txt = custom_target('abbrevs.txt',
+  input: tzdata,
+  output: ['abbrevs.txt'],
+  command: [zic, '-P', '-b', 'fat', 'junkdir', '@INPUT@'],
+  capture: true)
+endif
+
+subdir('tznames')
diff --git a/src/timezone/tznames/meson.build b/src/timezone/tznames/meson.build
new file mode 100644
index 00000000000..7e0a682bd9e
--- /dev/null
+++ b/src/timezone/tznames/meson.build
@@ -0,0 +1,21 @@
+tznames = files(
+  'Africa.txt',
+  'America.txt',
+  'Antarctica.txt',
+  'Asia.txt',
+  'Atlantic.txt',
+  'Australia.txt',
+  'Etc.txt',
+  'Europe.txt',
+  'Indian.txt',
+  'Pacific.txt',
+)
+
+tznames_sets = files(
+  'Default',
+  'Australia',
+  'India')
+
+install_data(tznames, tznames_sets,
+  install_dir: dir_data / 'timezonesets',
+)
diff --git a/src/tools/find_meson b/src/tools/find_meson
new file mode 100755
index 00000000000..583ec7e6f68
--- /dev/null
+++ b/src/tools/find_meson
@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+
+import os
+import shlex
+import sys
+
+to_print = []
+
+if 'MUON_PATH' in os.environ:
+    to_print += ['muon', os.environ['MUON_PATH']]
+else:
+    mesonintrospect = os.environ['MESONINTROSPECT']
+    components = shlex.split(mesonintrospect)
+
+    if len(components) < 2:
+        print('expected more than two components, got: %s' % components)
+        sys.exit(1)
+
+    if components[-1] != 'introspect':
+        print('expected introspection at the end')
+        sys.exit(1)
+
+    to_print += ['meson'] + components[:-1]
+
+print('\n'.join(to_print), end='')
+
+sys.exit(0)
diff --git a/src/tools/pgflex b/src/tools/pgflex
new file mode 100755
index 00000000000..13d73d50cb4
--- /dev/null
+++ b/src/tools/pgflex
@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+
+import argparse
+import os
+import subprocess
+import sys
+
+parser = argparse.ArgumentParser()
+
+parser.add_argument('--flex', dest='flex_command', help='flex executable to run', type=str)
+parser.add_argument('--perl', dest='perl_command', help='perl executable to run', type=str)
+parser.add_argument('--builddir', dest='builddir', help='build directory of meson build', type=str)
+parser.add_argument('--privatedir', dest='privatedir', help='temporary directory to avoid conflicts', type=str)
+parser.add_argument('--fix_warning_script', dest='fix_warning_script', help='script for fixing warnings', default='')
+parser.add_argument('-b', dest='no_backup', action='store_true', help='whether no_backup is enabled or not')
+parser.add_argument('-o', dest='output_file', help='output file')
+parser.add_argument('--stamp_header', dest='stamp_header', help='', default=None)
+
+args, rest = parser.parse_known_args()
+rest, input_file = rest[:-1], rest[-1]
+
+# since 'lex.backup' is always named that,
+# change working directory to temporary directory
+# to avoid conflicts
+os.chdir(os.path.dirname(args.privatedir))
+
+# make paths absolute if it is not absolute,
+# msbuild uses absolute paths as default
+args.output_file = args.output_file if os.path.isabs(args.output_file) else os.path.join(args.builddir, args.output_file)
+input_file = input_file if os.path.isabs(input_file) else os.path.join(args.builddir, input_file)
+
+# set flex flags
+if args.no_backup:
+  flex_flags = ['-o', args.output_file, '-b'] + rest + [input_file]
+else:
+  flex_flags = ['-o', args.output_file] + rest + [input_file]
+
+# create .c file from .l file
+command = [args.flex_command] + flex_flags
+subprocess.run(command, check=True)
+
+ # check lex.backup
+if args.no_backup:
+  with open('lex.backup') as lex:
+    if sum(1 for _ in lex) != 1:
+      sys.exit('Scanner requires backup; see lex.backup.')
+  os.remove('lex.backup')
+
+# fix warnings
+if args.fix_warning_script:
+  # make paths absolute if it is not absolute
+  args.fix_warning_script = args.fix_warning_script if os.path.isabs(args.fix_warning_script) else os.path.join(args.builddir, args.fix_warning_script)
+
+  command = [args.perl_command, args.fix_warning_script, args.output_file]
+  subprocess.run(command, check=True)
+
+#
+stamp_header = args.stamp_header
+if stamp_header != None:
+    if not os.path.isabs(stamp_header):
+        stamp_header = os.path.join(args.builddir, stamp_header)
+    with open(stamp_header, mode='w') as fh:
+        pass
diff --git a/src/tools/rcgen b/src/tools/rcgen
new file mode 100755
index 00000000000..ab35e952959
--- /dev/null
+++ b/src/tools/rcgen
@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+import argparse
+
+parser = argparse.ArgumentParser(description='generate PostgreSQL rc file')
+
+parser.add_argument('INPUT', type=argparse.FileType('r'))
+parser.add_argument('-o', '--output', type=argparse.FileType('w'), required=True)
+parser.add_argument('--depfile', type=argparse.FileType('w'), required=False)
+
+parser.add_argument('--FILEDESC', type=str, required=True)
+parser.add_argument('--NAME', type=str, required=True)
+parser.add_argument('--VFT_TYPE', type=str, required=True)
+parser.add_argument('--FILEENDING', type=str, required=True)
+parser.add_argument('--ICO', type=str)
+
+
+args = parser.parse_args()
+
+data = args.INPUT.read()
+
+data = data.replace('@FILEDESC@', args.FILEDESC)
+data = data.replace('@NAME@', args.NAME)
+data = data.replace('@VFT_TYPE@', args.VFT_TYPE)
+data = data.replace('@FILEENDING@', args.FILEENDING)
+
+if args.ICO:
+   data = data.replace('@ICO@', args.ICO)
+   if args.depfile:
+       args.depfile.write("{0} : {1}\n".format(args.INPUT.name, args.ICO))
+else:
+   data = data.replace("IDI_ICON ICON \"@ICO@\"\n", '')
+
+args.output.write(data)
diff --git a/src/tools/testwrap b/src/tools/testwrap
new file mode 100755
index 00000000000..8e0a96db7d1
--- /dev/null
+++ b/src/tools/testwrap
@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+
+import argparse
+import shutil
+import subprocess
+import os
+import sys
+
+parser = argparse.ArgumentParser()
+
+parser.add_argument('--srcdir', help='source directory of test', type=str)
+parser.add_argument('--basedir', help='base directory of test', type=str)
+parser.add_argument('--testgroup', help='test group', type=str)
+parser.add_argument('--testname', help='test name', type=str)
+parser.add_argument('test_command', nargs='*')
+
+args = parser.parse_args()
+
+testdir = '{}/testrun/{}/{}'.format(args.basedir, args.testgroup, args.testname)
+
+print('# executing test in {} group {} test {}'
+  .format(testdir, args.testgroup, args.testname))
+sys.stdout.flush()
+
+if os.path.exists(testdir) and os.path.isdir(testdir):
+  shutil.rmtree(testdir)
+os.makedirs(testdir)
+
+os.chdir(args.srcdir)
+
+# mark test as having started
+open(os.path.join(testdir, 'test.start'), 'x')
+
+env_dict = {**os.environ,
+            'TESTDATADIR': os.path.join(testdir, 'data'),
+            'TESTLOGDIR': os.path.join(testdir, 'log'),}
+
+sp = subprocess.run(args.test_command, env=env_dict)
+
+if (sp.returncode == 0):
+    print('# test succeeded')
+    open(os.path.join(testdir, 'test.success'), 'x')
+else:
+    print('# test failed')
+    open(os.path.join(testdir, 'test.fail'), 'x')
+sys.exit(sp.returncode)
-- 
2.37.0.3.g30cc8d0f14

