Thread: C Functions
Hi everyone. I have a problem and I don't have a clue of how to solve it... some time ago I had programmed a couple of C functions for postgresql on my freebsd system, and compiled them into a .so file. It worked great.
Now I have to make a demo, and I've been given a WinXP notebook. I decided to go for postgresql on cygwin, and it works just fine as a service.
The thing is that now I want to recompile my C source code (gcc works fine) and generate the library (gcc -shared), and I get a lot of undefined references (_textin, _DirectFunctionCall1, _MemoryContextAlloc, etc.).
Could anyone tell me what to do, cause I'm really lost here.
Thanks in advance.
Now I have to make a demo, and I've been given a WinXP notebook. I decided to go for postgresql on cygwin, and it works just fine as a service.
The thing is that now I want to recompile my C source code (gcc works fine) and generate the library (gcc -shared), and I get a lot of undefined references (_textin, _DirectFunctionCall1, _MemoryContextAlloc, etc.).
Could anyone tell me what to do, cause I'm really lost here.
Thanks in advance.
Attachment
On Tue, Nov 11, 2003 at 05:42:09PM -0300, Franco Bruno Borghesi wrote:
> Could anyone tell me what to do, cause I'm really lost here.
<WAG>
The following thread may apply:
http://archives.postgresql.org/pgsql-cygwin/2003-11/msg00010.php
</WAG>
Jason
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Thanks Jason!
I have to tell you that I had managed to solve this before your reply, but I think it would be good to explain what I did for any other person who has the same problem.
My library is called pgakya, so anyone interested should relpace pgakya for the name of the library he intends to build.
I replaced in my Makefile :
gcc -shared -o ..\bin\pgakya.so *.o
for:
dlltool --export-all --output-def pgakya.def *.o
dllwrap -o ..\bin\pgakya.dll --dllname pgakya.dll -def pgakya.def *.o /tmp/postgresql7.4RC2/src/utils/dllinit.o /usr/lib/postgresql -Ltmp/postgresql7.4RC2/src/backend -lpostgres
this two lines did the job, and everything works perfect now.
Thanks again Jason.
On Thu, 2003-11-13 at 15:29, Jason Tishler wrote:
I have to tell you that I had managed to solve this before your reply, but I think it would be good to explain what I did for any other person who has the same problem.
My library is called pgakya, so anyone interested should relpace pgakya for the name of the library he intends to build.
I replaced in my Makefile :
gcc -shared -o ..\bin\pgakya.so *.o
for:
dlltool --export-all --output-def pgakya.def *.o
dllwrap -o ..\bin\pgakya.dll --dllname pgakya.dll -def pgakya.def *.o /tmp/postgresql7.4RC2/src/utils/dllinit.o /usr/lib/postgresql -Ltmp/postgresql7.4RC2/src/backend -lpostgres
this two lines did the job, and everything works perfect now.
Thanks again Jason.
On Thu, 2003-11-13 at 15:29, Jason Tishler wrote:
On Tue, Nov 11, 2003 at 05:42:09PM -0300, Franco Bruno Borghesi wrote: > Could anyone tell me what to do, cause I'm really lost here. <WAG> The following thread may apply: http://archives.postgresql.org/pgsql-cygwin/2003-11/msg00010.php </WAG> Jason
Attachment
On Thu, Nov 13, 2003 at 03:42:37PM -0300, Franco Bruno Borghesi wrote:
> Thanks Jason!
You are welcome.
> I replaced in my Makefile :
> gcc -shared -o ..\bin\pgakya.so *.o
> for:
> dlltool --export-all --output-def pgakya.def *.o
> dllwrap -o ..\bin\pgakya.dll --dllname pgakya.dll -def pgakya.def
> *.o /tmp/ postgresql7.4RC2/src/utils/dllinit.o /usr/lib/postgresql
> -Ltmp/postgresql7.4RC2 /src/backend -lpostgres
>
> this two lines did the job, and everything works perfect now.
The following should work too:
gcc -shared -Wl,--export-all-symbols -o ../bin/pgakya.dll *.o -L/tmp/postgresql7.4RC2/src/backend -lpostgres
Jason
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