Re: 64 bit PostgreSQL 8.3.6 build on AIX 5300-09-02-0849 with IBM XL C/C++ 10.1.0.1 - initdb fails (could not dump unrecognized node type: 650) - Mailing list pgsql-hackers

> > So if this is a compiler bug, it certainly isn't an obvious one. I'll dig
> > deeper to see how I can convince configure to use -qnooptimize.
>
> Set CFLAGS in its environment.  The default is set in src/template/aix
>       CFLAGS="-O2 -qmaxmem=16384 -qsrcmsg -qlonglong"
>
> > When I've used the build farm scripts, configure gives xlC_r these flags:
> > configure:7117: xlC_r -q64 -o conftest -O2 -qmaxmem=16384 -qsrcmsg
> > -qlonglong -g  -I/opt/freeware/include/libxml2   -L/opt/freeware/lib
> > conftest.c -lm  >&5

Um, why are you using the C++ frontend ? Have you tried xlc_r or cc_r instead ?

Using xlC_r or xlc_r, implicitly sets -qansialias. IIRC we had some issues with
aliasing on other platforms too ? Would that switch be wrong ?
Doc sais: "Use type-based aliasing during optimization."

> Dunno where the -q64 came from ...

Probably together with the choice of compiler command ?

Andreas