CXXFLAGS += $(shell sdl2-config --cflags) -std=c++14 -Wall -g
CFLAGS += $(shell sdl2-config --cflags)
CPPFLAGS += -I. -Iimgui -Iglm \
	    -DREAL_BUILD -DGLM_ENABLE_EXPERIMENTAL
LIBS += $(shell sdl2-config --libs) -lGL -lGLEW -ldl

FILEDUMPS =

IMGUI = imgui.o imgui_demo.o imgui_draw.o
DEMO = \
	 main.o \
	 imgui_impl_sdl.o \
	 utilities.o \
	 texture.o \
	 rendertarget.o \
	 raymarcher.o \
	 bloom.o \
	 profiling.o

DEMO_DEPS = $(DEMO:%.o=.%.d)


demo:	$(DEMO) $(IMGUI)
	$(CXX) $(CXXFLAGS) $(CPPFLAGS) -o demo \
		$(DEMO) $(IMGUI) $(LIBS)

clean:
	rm -f $(IMGUI) $(DEMO) $(FILEDUMPS) demo externals.hh.gch

fullclean: clean
	rm -f $(DEMO_DEPS)

.PHONY: clean fullclean


$(FILEDUMPS): fd-%.h: %
	xxd -i $< $@


imgui.o: imgui/imgui.cpp
	$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c -o $@ $<

imgui_demo.o: imgui/imgui_demo.cpp
	$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c -o $@ $<

imgui_draw.o: imgui/imgui_draw.cpp
	$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c -o $@ $<

-include $(DEMO_DEPS)

$(DEMO): %.o: %.cc externals.hh.gch | $(FILEDUMPS)
	$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c -o $@ $<
	$(CXX) $(CXXFLAGS) $(CPPFLAGS) -M -MF $(@:%.o=.%.d) -MT $@ $<

externals.hh.gch: externals.hh
	$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c -o $@ $<