buildsys: Move sdl cflags/libs to per object

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170907082918.7299-3-famz@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Fam Zheng <famz@redhat.com>

audio/Makefile.objs

@@ -11,3 +11,4 @@ common-obj-$(CONFIG_AUDIO_WIN_INT) += audio_win_int.o
 common-obj-y += wavcapture.o
 
 sdlaudio.o-cflags := $(SDL_CFLAGS)
+sdlaudio.o-libs := $(SDL_LIBS)

configure

@@ -2788,7 +2788,6 @@ EOF
     sdl_cflags="$sdl_cflags $x11_cflags"
     sdl_libs="$sdl_libs $x11_libs"
   fi
-  libs_softmmu="$sdl_libs $libs_softmmu"
 fi
 
 ##########################################
@@ -5557,6 +5556,7 @@ if test "$sdl" = "yes" ; then
   echo "CONFIG_SDL=y" >> $config_host_mak
   echo "CONFIG_SDLABI=$sdlabi" >> $config_host_mak
   echo "SDL_CFLAGS=$sdl_cflags" >> $config_host_mak
+  echo "SDL_LIBS=$sdl_libs" >> $config_host_mak
 fi
 if test "$cocoa" = "yes" ; then
   echo "CONFIG_COCOA=y" >> $config_host_mak

ui/Makefile.objs

@@ -27,6 +27,7 @@ sdl.mo-objs += sdl2-gl.o
 endif
 endif
 sdl.mo-cflags := $(SDL_CFLAGS)
+sdl.mo-libs := $(SDL_LIBS)
 
 ifeq ($(CONFIG_OPENGL),y)
 common-obj-y += shader.o