[Tuxmath-devel] Cross-compiling tuxmath for windows on Debian

[David B. <db...@ta...>]

Hi Yves,

I'm trying to cross compile tuxmath according to your advice but have not y=
et=20
succeeded - get an error "undefined reference to `_WinMain@16'".

> If you want to cross compile it yourself:
> 1) install mingw32 on linux (apt-get install mingw32 for me).

No problem.

> 2) install precompiled  dev files (lib and includes) for SDL, SDL-image
> and SDL-mixer in the $target directory  (look into the cross-configure.sh=
).

I'm assuming I need the files precompiled for win32.  For SDL itself, I hav=
e a=20
choice of files intended for VC (SDL.dll and friends) or mingw32
(libSDL.dll.a, etc).  For SDL_image and SDL_mixer, there only seem to be th=
e=20
dll flavor.  =20
I've tried both types of SDL libs and get the same error either way.=20

Here is a listing of my cross-tools lib directory:

dbruce@debian:/usr/local/cross-tools/i586-mingw32msvc/lib$ ls
SDL.dll        SDL_image.lib  SDLmain.lib  libpng12.dll  smpeg.dll      =20
zlib1.dll
SDL.lib        SDL_mixer.dll  jpeg.dll     libtiff.dll   vorbis.dll
SDL_image.dll  SDL_mixer.lib  libgw32c.a   ogg.dll       vorbisfile.dll

> 3) install libgw32c (the dev file):
> http://gnuwin32.sourceforge.net/packages/libgw32c.htm in the same
> directory. 4) cross-configure.sh with --with-sdl-prefix option
> 5) cross-make.sh

The error with ./cross-make.sh:

dbruce@debian:~/tuxmath-crossbuild/tuxmath/trunk$ ./cross-make.sh
make  all-recursive
make[1]: Entering directory `/home/dbruce/tuxmath-crossbuild/tuxmath/trunk'
Making all in src
make[2]: Entering directory=20
`/home/dbruce/tuxmath-crossbuild/tuxmath/trunk/src'
i586-mingw32msvc-gcc -Wall -g -DDATA_PREFIX=3D\"data\" -DDEBUG -DVERSION=3D=
\"tuxmath-0.96\" -DSOUND -g -O2 -I/usr/include/SDL -D_GNU_SOURCE=3D1 -D_REE=
NTRANT -D__GW32__  -L/usr/local/cross-tools/i586-mingw32msvc/lib -o=20
tuxmath.exe  tuxmath.o setup.o title.o game.o options.o credits.o playsound=
=2Eo=20
mathcards.o=20
fileops.o  -L/usr/lib -lSDL -lSDL_image -lSDL_mixer -lgw32c -luuid -lole32 =
=2Dlwsock32 -mwindows
/usr/lib/gcc/i586-mingw32msvc/3.4.5/../../../../i586-mingw32msvc/lib/libmin=
gw32.a(main.o):=20
undefined reference to `_WinMain@16'
collect2: ld returned 1 exit status
make[2]: *** [tuxmath.exe] Error 1
make[2]: Leaving directory `/home/dbruce/tuxmath-crossbuild/tuxmath/trunk/s=
rc'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/dbruce/tuxmath-crossbuild/tuxmath/trunk'
make: *** [all] Error 2

=46rom what I can tell through google,  "_WinMain@16'" refers to a function=
 in=20
SDLmain.lib (or libSDLmain.a) that I need to link using "-lSDLmain".  Any=20
hints as to how to get this working?

(I am using the current tuxmath source in svn - revision 48)

Thanks for any help,
=2D-=20
David Bruce