CPPFLAGS=$(shell sdl2-config --cflags) $(EXTRA_CPPFLAGS) LDLIBS=$(shell sdl2-config --libs) -lGLEW $(EXTRA_LDLIBS) EXTRA_LDLIBS?=-lGL all: triangle clean: rm -f *.o triangle triangle: ../common-sdl2/shader_utils.o .PHONY: all clean