-CFLAGS += $(shell pkg-config --cflags cairo xcb-keysyms xcb-dpms)
-LIBS += $(shell pkg-config --libs cairo xcb-keysyms xcb-dpms xcb-image)
+CFLAGS += $(shell pkg-config --cflags cairo xcb-keysyms xcb-dpms xcb-xinerama)
+LIBS += $(shell pkg-config --libs cairo xcb-keysyms xcb-dpms xcb-xinerama xcb-image)