-ldflags := $(shell sdl-config --libs) -lSDL_image -lSDL_mixer
-cflags := $(shell sdl-config --cflags) -Wall -DDEBUG=$(if $(DEBUG),1,0)
-cflags := $(strip $(cflags))
-cflags += $(CFLAGS)
+DATA_PREFIX := /usr/share/vor
+PROGRAM_PREFIX := /usr/games/bin
+
+debug := $(if $(DEBUG),-DDEBUG=1)
+paths := -DDATA_PREFIX=\"$(DATA_PREFIX)\"
+sdl-cflags := $(shell sdl-config --cflags)
+sdl-ldflags := $(shell sdl-config --libs)
+
+ldflags := $(sdl-ldflags) -lSDL_image -lSDL_mixer
+cflags := $(sdl-cflags) $(debug) $(paths) $(CFLAGS)