+ifneq ($(findstring sdl,$(SOUND_DRIVERS)),)
+plugins/dfsound/out.o: CFLAGS += -DHAVE_SDL
+OBJS += plugins/dfsound/sdl.o
+endif
+ifneq ($(findstring pulseaudio,$(SOUND_DRIVERS)),)
+plugins/dfsound/out.o: CFLAGS += -DHAVE_PULSE
+OBJS += plugins/dfsound/pulseaudio.o
+endif
+ifneq ($(findstring libretro,$(SOUND_DRIVERS)),)
+plugins/dfsound/out.o: CFLAGS += -DHAVE_LIBRETRO