DARWIN = $(shell if gcc -v 2>&1 | grep darwin >/dev/null 2>&1; then	\
		   echo 1;						\
		 else							\
		   echo 0;						\
		 fi)

FLAGS = $(shell if [ $(DARWIN) -eq 1 ]; then	\
	          echo "-framework SDL2";	\
		else				\
		  echo "result of sdl2-config";	\
		fi)

all:
	@echo $(FLAGS)