unspecified: cat readme.md pongy_s = pongy.c pongy_c = pongy pongy: $(pongy_s) clang $(pongy_s) -l SDL2 -l GLU -l GL -o $(pongy_c) chmod +x $(pongy_c) ./$(pongy_c) pongymod_s = pongy_modified.c pongymod_c = pongy_modified pongymod: $(pongymod_s) clang $(pongymod_s) -l SDL2 -l GLU -l GL -o $(pongymod_c) chmod +x $(pongymod_c) ./$(pongymod_c)