Re :Problem with Compiling C function

["Maciej Grygorcewicz" <maciekgrygorcewicz(at)gmail(dot)com>]

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(at)gmail(dot)com ,
prometeusz1(at)o2(dot)pl
GG 1638280