[FFmpeg-cvslog] build: prevent SDL2 from polluting global cflags and extralibs

[James Almer]

ffmpeg | branch: master | James Almer <jamrial at gmail.com> | Sun Oct  8 16:54:18 2017 -0300| [fde3bb16f90ac456709c7305b9e230e8327d8625] | committer: James Almer

build: prevent SDL2 from polluting global cflags and extralibs

Remove the SDL_main define from the global cflags but not from the
ffplay cflags, and the -mwindows linker option from extralibs instead
of overriding it with the addition of -mconsole.

Reviewed-by: wm4 <nfxjfg at googlemail.com>
Signed-off-by: James Almer <jamrial at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fde3bb16f90ac456709c7305b9e230e8327d8625
---

 configure           | 4 ++--
 ffbuild/library.mak | 1 -
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index fc377d90fb..1e2721b134 100755
--- a/configure
+++ b/configure
@@ -6108,10 +6108,10 @@ if enabled sdl2; then
             enable sdl2
     fi
     if test $target_os = "mingw32"; then
-        sdl2_extralibs="$sdl2_extralibs -mconsole"
+        sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
     fi
 fi
-enabled sdl2 && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
+enabled sdl2 && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags) && add_extralibs $sdl2_extralibs
 
 if enabled decklink; then
     case $target_os in
diff --git a/ffbuild/library.mak b/ffbuild/library.mak
index ee19c3c797..4191edcf9c 100644
--- a/ffbuild/library.mak
+++ b/ffbuild/library.mak
@@ -16,7 +16,6 @@ all-$(CONFIG_SHARED): $(SUBDIR)$(SLIBNAME) $(SUBDIR)lib$(FULLNAME).pc
 
 LIBOBJS := $(OBJS) $(SUBDIR)%.h.o $(TESTOBJS)
 $(LIBOBJS) $(LIBOBJS:.o=.s) $(LIBOBJS:.o=.i):   CPPFLAGS += -DHAVE_AV_CONFIG_H
-$(TESTOBJS) $(TESTOBJS:.o=.i): CFLAGS += -Umain
 
 $(SUBDIR)$(LIBNAME): $(OBJS)
 	$(RM) $@