CC     = gcc
CFLAGS = -O2 -Wall -Wextra \
         $(shell pkg-config --cflags fontconfig xft x11 imlib2)
LIBS   = $(shell pkg-config --libs fontconfig xft x11 imlib2) -lm

lens: lens.c
	$(CC) $(CFLAGS) -o lens lens.c $(LIBS)

clean:
	rm -f lens

.PHONY: clean