-CFLAGS := -MMD -O2 -ffast-math -fomit-frame-pointer `sdl-config --cflags` -D$(SYSTYPE)
-CXXFLAGS := -MMD -O2 -ffast-math -fomit-frame-pointer `sdl-config --cflags` -D$(SYSTYPE)
+#CFLAGS := -MMD -O2 -ffast-math -fomit-frame-pointer `sdl-config --cflags` -D$(SYSTYPE)
+#CXXFLAGS := -MMD -O2 -ffast-math -fomit-frame-pointer `sdl-config --cflags` -D$(SYSTYPE)
+CFLAGS ?= -O2 -ffast-math -fomit-frame-pointer
+CXXFLAGS ?= -O2 -ffast-math -fomit-frame-pointer
+
+SDL_CFLAGS = `sdl-config --cflags`
+DEFINES = -D$(SYSTYPE)
+GCC_DEPS = "-MMD"