How can I export atexit and puts?

[Josh Branning]

Hi, I am trying to export atexit and puts using wine, I wrote a spec 
file, libwinecompat.spec with the following:

@ cdecl atexit(ptr) MSVCRT_atexit
@ cdecl puts(str) MSVCRT_puts

_________________________________________________________________________

I build an ar archive with:

winebuild --implib -o libwinecompat.a -E libwinecompat.spec

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I then test using this program ...

/* atexit example */
#include <stdio.h>      /* puts */
#include <stdlib.h>     /* atexit */

void fnExit1 (void)
{
   puts ("Exit function 1.");
}

void fnExit2 (void)
{
   puts ("Exit function 2.");
}

int main ()
{
   atexit (fnExit1);
   atexit (fnExit2);
   puts ("Main function.");
   return 0;
}

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...And compile with

sudo mv /usr/i686-w64-mingw32/lib/libmsvcrt.a 
/usr/i686-w64-mingw32/lib/libmsvcrt.a.old
i686-w64-mingw32-gcc -nostdlib test.c -lmsvcrt -L. -lwinecompat
sudo mv /usr/i686-w64-mingw32/lib/libmsvcrt.a.old 
/usr/i686-w64-mingw32/lib/libmsvcrt.a

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I know mingw's msvcrt is not linked and wine's msvcrt is. Unfortuately I 
still get the following errors:

undefined reference to `puts'
undefined reference to `atexit'

________________________________________________________________________________

Any help much appreciated,

Josh

[Stefan Dösinger]

> Hi, I am trying to export atexit and puts using wine, I wrote a spec file, libwinecompat.spec with the following:
>
> @ cdecl atexit(ptr) MSVCRT_atexit
> @ cdecl puts(str) MSVCRT_puts
>
> I build an ar archive with:
>
> winebuild --implib -o libwinecompat.a -E libwinecompat.spec

I am not entirely sure of these things myself, but I am surprised you don't get an error at this point. If you want to export a forward then I htink you'll have to write msvcrt.atexit instead of "MSVCRT_atexit".

However, I recommend loading Wine's msvcrt at runtime with LoadLibrary and retrieving the symbols with GetProcAddress. Otherwise you'll have a mess on your hand to make sure you don't accidentally call the Linux or OSX libc instead.