ifeq ($(OS),Windows_NT)
         OS = Windows
         MICROGLUT = MicroGlut.c
 else ifeq ($(shell uname),Linux)
         OS = Linux
         MICROGLUT = MicroGlut.c
 else ifeq ($(shell uname),Darwin)
         OS = Mac
         MICROGLUT = MicroGlut.m
 endif
 

 PROG = tsbk07

 COMMON = \
 	common/GL_utilities.c \
 	common/LoadTGA.c \

 	common/$(OS)/$(MICROGLUT)

 CPPFLAGS += \
 	-Icommon \

 	-Icommon/$(OS)

 CXXFLAGS += \

 	-g \

 	-Wall \
 	-Wextra \
 	-Wpedantic \
 	-Wshadow

 LDLIBS_Windows += \
 	-lopengl32
 LDLIBS_Linux += \

 	-lX11 \

 	-lGL
 LDLIBS_Mac += \
 	-framework Cocoa \
 	-framework OpenGL
 LDLIBS += \

 	$(LDLIBS_$(OS))

 # The below is equivalent to the GNU Make implicit rule for

 # $(PROG): $(COMMON)
 $(PROG): $(PROG).cpp $(COMMON)
 	g++ $(CXXFLAGS) $(CPPFLAGS) $(PROG).cpp $(COMMON) $(LDLIBS) -o $(PROG)

 .PHONY: clean

 clean:

 	rm $(PROG)

 .PHONY: run

 run: $(PROG)
 	./$(PROG)