Sasha.
thanks for that knowledge.
please look at this code:
both MS and GNU environments work fine with the function f().
but both fail in function print() that call printf() library function
using that Makefile will produce two executables
gprog - that compiled and linked by gcc
prog - that compiled and linked by MS's tools
---------------------- dll_code.c ------------------
#include <stdio.h>
void print()
{
printf("Hello world\n");
}
int f()
{
return 1;
}
----------------------- prog.c -----------------------
#include <stdio.h>
#ifdef WIN32
#include <windows.h>
__declspec( dllimport ) void print();
__declspec( dllimport ) int f();
#else
void print();
int f();
#endif
void (*pPrint)();
int (*pF)();
int main()
{
#ifdef WIN32
HINSTANCE hLib;
hLib = LoadLibrary("dll.dll");
pF = (int (*)(int val))GetProcAddress(hLib,"f");
pPrint = (int (*)(char*))GetProcAddress(hLib,"print");
#else
pF = f;
pPrint = print;
#endif
printf("%d\n",pF());
pPrint();
return 0;
}
---------------------- main.c -----------------------
int main() {}
-------------------- Makefile ----------------------------
gprog.exe: prog.c dll.dll msprog.exe
gcc -g prog.c dll.lib -o gprog
dll.dll: exp.o main.c
gcc -g main.c dll_code.c exp.o -o dll.dll -mno-cygwin
exp.o: dll_code.o
dlltool -e exp.o -l dll.lib -D dll.dll --export-all-symbols
dll_code.o
dll_code.o: dll_code.c
gcc -c -g dll_code.c
clean:
rm -f *.o *.exe* *.lib *.dll *.lreg *.obj vc6*
msprog.exe: prog.c dll.lib
cl prog.c dll.lib /D "WIN32" -Femsprog /nologo /W3 /GX /D "NDEBUG"
/D "_CONSOLE" /D "_MBCS" /YX /FD /c
link prog.obj dll.lib
----------------------------------------------------------------------------
--
other thing is that MS linked executable do not statically load the DLL
Raz
-----Original Message-----
From: Shamsutdinov, Salikhyan
Sent: Tuesday, January 23, 2001 12:57 PM
To: Peleg, Raz; '[EMAIL PROTECTED]'
Subject: RE: link GNU and msdev
Sorry for mistake. The option is -mno-cygwin (compiled program will use
crtdll.dll from Win32 and not Cygwin1.dll), this is the option of cc1.exe c
compiler which gcc.exe calls. This works for both gcc version 2.91 and gcc
version 2.95.2 what I use.
Sasha.
-----Original Message-----
From: Peleg, Raz
Sent: Tuesday, January 23, 2001 11:30 AM
To: Shamsutdinov, Salikhyan
Subject: RE: link GNU and msdev
I'm trying to compile gdb
my gcc compiler do not support this option. can you tell me in which
versions it do work?
thanks
Raz
-----Original Message-----
From: Shamsutdinov, Salikhyan
Sent: Tuesday, January 23, 2001 10:55 AM
To: Peleg, Raz
Subject: RE: link GNU and msdev
Almost all GNU applications support -mno_cygwin compilation option for gcc,
this allows to compile GNU application by using Win32 dll, not Cygnus1.dll.
What is the name of GNU application you are trying to compile?
Sasha.
-----Original Message-----
From: Raz Peleg [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, January 23, 2001 10:22 AM
To: [EMAIL PROTECTED]
Subject: link GNU and msdev
Hi all,
I'm trying to port a gnu application to windows, in order to do so I need
to link a library compiled with gcc
to my own code written on msdev.
Q: Is any one know a way to do it smooth?
It seem that ms compiler and gcc binaries do not share the same naming
method and the linking fail.
Q: Is there a way to convince them to work together?
Another idea is to make the gnu libraries a win32 DLL, and to put away the
join link, at this point I found
msdev linked applications do not load this DLL at start and I must use
dynamic DLL load [LoadLibrary()].
Q: any idea why?
now it work on a little test case I made, as long as the dll do not contain
library function call.
Q: WHY???
regards
Raz
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main.c
dll_code.c
Makefile
prog.c
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