BASE_DIRS := $(shell cd $(TOP); find src -type d)
BASE_SRCS := $(shell cd $(TOP); find src -mindepth 2 -type f -name '*.cpp')
BASE_OBJS := $(BASE_SRCS:.cpp=.o)

ALL_DIRS += $(BASE_DIRS)
ALL_OBJS += $(BASE_OBJS)

BASE_FLAGS = \
	$(CPPFLAGS) \
	$(CXXFLAGS) \
	$(strip \
		$(CPPUNIT_FLAGS) \
		$(SDL_FLAGS) \
		$(SDL_IMG_FLAGS) \
	)