ifeq ($(OS),Windows_NT)
	GL_LIB := opengl32
else
	GL_LIB := GL
endif
CFLAGS := $(shell freetype-config --cflags) $(shell sdl2-config --cflags)
CXXFLAGS := $(CFLAGS)
LDFLAGS := -l$(GL_LIB) -ldl -lfreetype $(shell sdl2-config --libs) $(shell freetype-config --libs)

freetype2gl3: gl3w.o freetype2gl3.o GLShader.o GLProgram.o
	$(CXX) -o $@ $^ $(LDFLAGS)

.PHONY: clean
clean:
	-rm -f freetype2gl3