SDL_CONFIG=$(shell sdl-config --cflags)
SDL_LIBS=$(shell sdl-config --libs)
CFLAGS=$(SDL_CONFIG) -Wall -O2 -g

LIBS=$(SDL_LIBS) -lm -lrt

CC=gcc
SPARSE=sparse
CHECKPATCH=/usr/src/linux/scripts/checkpatch.pl

PLANET_OBJS=main.o random.o vector.o planet.o camera.o quadtree.o
PLANET_DEBUG_OBJS= $(patsubst %.o,%-debug.o,$(PLANET_OBJS))
ALL_OBJS = $(PLANET_OBJS) $(PLANET_DEBUG_OBJS)
ALL_DEBS = $(patsubst %.o,.%.o.d,$(ALL_OBJS))

ifeq ($(V),1)
	Q		=
	QUIET_CC	=
	QUIET_LINK	=
else
	Q		= @
	QUIET_CC	= @echo "       CC " $@;
	QUIET_LINK	= @echo "     LINK " $@;
endif

sdl-planet: $(PLANET_OBJS)
	$(QUIET_LINK)$(CC) $(LIBS) -o $@ $(PLANET_OBJS)

debug-planet: $(PLANET_DEBUG_OBJS)
	$(QUIET_LINK)$(CC) $(LIBS) -o $@ $(PLANET_DEBUG_OBJS) -DDEBUG

.c.o:
	$(QUIET_CC)$(CC) -MMD -MF .$@.d $(CFLAGS) -c $< -o $@
	$(Q)cp .$@.d .$@.P; \
            sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
                -e '/^$$/ d' -e 's/$$/ :/' < .$@.d >> .$@.P; \
            mv .$@.P .$@.d

ifeq ($(C),1)
	sparse $(CFLAGS) $<
endif
ifeq ($(C),2)
	$(CHECKPATCH) -f $<
endif

%-debug.o: %.c
	$(QUIET_CC)$(CC) -MMD -MF .$@.d $(CFLAGS) -DDEBUG -O0 -c $< -o $@
	$(Q)cp .$@.d .$@.P; \
            sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
                -e '/^$$/ d' -e 's/$$/ :/' < .$@.d >> .$@.P; \
            mv .$@.P .$@.d

TAGS:
	@echo "     TAGS"
	$(Q)etags *.[ch]

clean:
	rm -rfv $(ALL_OBJS) *~ sdl-planet TAGS $(ALL_DEBS) \
		debug-planet

.PHONY: all clean TAGS

-include $(ALL_DEBS)