HELPERS = $(COMMANDS)/helpers

XRANDR_LIBS = $(shell pkg-config --libs xrandr x11)
X11_LIBS = $(shell pkg-config --libs x11)

$(HELPERS)/list-outputs: $(HELPERS)/list-outputs.c
	gcc -o $(HELPERS)/list-outputs \
            $(HELPERS)/list-outputs.c $(XRANDR_LIBS)

$(HELPERS)/find-free-display: $(HELPERS)/find-free-display.c
	gcc -o $(HELPERS)/find-free-display \
            $(HELPERS)/find-free-display.c $(X11_LIBS)

helpers: $(HELPERS)/list-outputs $(HELPERS)/find-free-display

clean-helpers:
	rm -f $(HELPERS)/list-outputs $(HELPERS)/find-free-display