[FFmpeg-devel] ffplay failed to build under mingw32 (and under OS X)

[Hanspeter Niederstrasser]

On Sun, May 15, 2011 at 9:16 PM, Michael Niedermayer <michaelni at gmx.at> wrote:
>
> On Sun, May 15, 2011 at 10:38:04AM -0400, Hanspeter Niederstrasser wrote:
> > > after "configure: Revert sdl hunk of 4fa18c56. This breaks OSX"
> > > (http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=ca87d439065c705311d0a98076df3c021b187adb)
> > > ffplay is stopped to build. That happens because of SDL check fail. To
> > > be more precise it fail in a check:
> > >
> > > /.../
> > > check_func_headers SDL.h SDL_Init $sdl_cflags $sdl_libs &&
> > > /.../
> > >
> > > that give in config.log message:
> > >
> > > /.../
> > > check_func_headers SDL.h SDL_Init
> > > -I/usr/i686-pc-mingw32/sys-root/mingw/include/SDL -D_GNU_SOURCE=1
> > > -Dmain=SDL_main -lmingw32 -lSDLmain -lSDL -mwindows
> > > check_ld -I/usr/i686-pc-mingw32/sys-root/mingw/include/SDL
> > > -D_GNU_SOURCE=1 -Dmain=SDL_main -lmingw32 -lSDLmain -lSDL -mwindows
> > > check_cc -I/usr/i686-pc-mingw32/sys-root/mingw/include/SDL
> > > -D_GNU_SOURCE=1 -Dmain=SDL_main -mwindows
> > > BEGIN /tmp/ffconf.CKUleDYo.c
> > >      1 #include <SDL.h>
> > >      2 long check_SDL_Init(void) { return (long) SDL_Init; }
> > >      3 int main(void) { return 0; }
> > > END /tmp/ffconf.CKUleDYo.c
> > > ccache i686-pc-mingw32-gcc -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112
> > > -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -U__STRICT_ANSI__ --static
> > > -I/var/www/users/research/ffmpeg/snapshots/build/include -std=c99
> > > -fno-common -fomit-frame-pointer
> > > -I/usr/i686-pc-mingw32/sys-root/mingw/include/SDL -D_GNU_SOURCE=1
> > > -Dmain=SDL_main -mwindows -c -o /tmp/ffconf.PXRBqhG8.o
> > > /tmp/ffconf.CKUleDYo.c
> > > /tmp/ffconf.CKUleDYo.c:3:5: error: conflicting types for 'SDL_main'
> > > /usr/i686-pc-mingw32/sys-root/mingw/include/SDL/SDL_main.h:53:12: note:
> > > previous declaration of 'SDL_main' was here
> > > /.../
> >
> > The same error happens on OS X (10.5/i386 with SDL-1.2.14 built
> > locally), but presumably also happens on other OS X versions.
> >
> > My solution was to have check_func_headers() test for the same things
> > as in the pkg-config based check in the conditional (which does work
> > on OS X if I force the conditional to not use sdl-config):
>
> hmm, ok, i commited it, lets see if this works better than the previous

On OS X 10.5, SDL detection works again.

Hanspeter

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