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Thread: Re :Problem with Compiling C function

Re :Problem with Compiling C function

From
"Maciej Grygorcewicz"
Date:
2008/1/9, Maciej Grygorcewicz :
>> But linker threw such errors:
> >"
>>  Unresolved External: _pgwin32_fopen referended from .... // and so on
>  >Unresolved External: _pg_sprintfl referended from .... // and so on "
>>
>> Why???? I have included postgres.h , and all other required files .

>-lpgport is needed.

Thanks for the response. But I have few questions
Is this a compiler / linker switch . Can I turn it on on Builder . or have I to use gcc or g++??

> I tried to build almost the same code but in C++ style DLL.
> DLL file was created succesfully , but on the other hand postgreSQL couldn't
> find exported function...
> DLL was in non-undernstadable format for postgresql.

>for c++ you have to wrap the postgresql functions into extern "C".
Yes , I am wrapping exported functions in extern "C" . But it doesn't work.
Maybe I have to wrapp all functions , but this is  never ending work - I have in project many files from Jpeglib library...
--
Pozdrawiam

Maciej Grygorcewicz
maciekgrygorcewicz@gmail.com ,
prometeusz1@o2.pl
GG 1638280

Re: Re :Problem with Compiling C function

From
"Reini Urban"
Date:
2008/1/14, Maciej Grygorcewicz :
> 2008/1/9, Maciej Grygorcewicz :
> >> But linker threw such errors:
> > >"
> >>  Unresolved External: _pgwin32_fopen referended from .... // and so on
> >  >Unresolved External: _pg_sprintfl referended from .... // and so on "
> >>
> >> Why???? I have included postgres.h , and all other required files .
>
>  >-lpgport is needed.
>
> Thanks for the response. But I have few questions
> Is this a compiler / linker switch . Can I turn it on on Builder . or have I
> to use gcc or g++??

We only support the gnu compiler on cygwin. I don't know builder.
Better ask at the -win32 list.