CFLAGS += -O3 -mfpu=vfp
CFLAGS += `sdl-config --cflags`
CFLAGS += -I$(SDKSTAGE)/opt/vc/include -I$(SDKSTAGE)/opt/vc/include/interface/vcos/pthreads
+CFLAGS += -I/opt/vc/include/interface/vmcs_host/linux
# expecting to have PATH set up to get correct sdl-config first