Makefile: refactoring and adding desktop notifications support

cfg/check_features.mk

@@ -0,0 +1,39 @@
+# Check if we can use X11
+CHECK_X11_LIBS = $(shell pkg-config x11 || echo -n "error")
+ifneq ($(CHECK_X11_LIBS), error)
+	LIBS += x11
+	CFLAGS += -D_X11
+endif
+
+# Check if we want build audio support
+AUDIO = $(shell if [ -z "$(DISABLE_AV)" ] || [ "$(DISABLE_AV)" == "0" ] ; then echo enabled ; else echo disabled ; fi)
+ifneq ($(AUDIO), disabled)
+	-include $(CFG_DIR)/av.mk
+endif
+
+# Check if we want build sound notifications support
+SND_NOTIFY = $(shell if [ -z "$(DISABLE_SOUND_NOTIFY)" ] || [ "$(DISABLE_SOUND_NOTIFY)" == "0" ] ; then echo enabled ; else echo disabled ; fi)
+ifneq ($(SND_NOTIFY), disabled)
+	-include $(CFG_DIR)/sound_notifications.mk
+endif
+
+# Check if we want build desktop notifications support
+DESK_NOTIFY = $(shell if [ -z "$(DISABLE_DESKTOP_NOTIFY)" ] || [ "$(DISABLE_DESKTOP_NOTIFY)" == "0" ] ; then echo enabled ; else echo disabled ; fi)
+ifneq ($(DESK_NOTIFY), disabled)
+	-include $(CFG_DIR)/desktop_notifications.mk
+endif
+
+# Check if we can build Toxic
+CHECK_LIBS = $(shell pkg-config $(LIBS) || echo -n "error")
+ifneq ($(CHECK_LIBS), error)
+	CFLAGS += $(shell pkg-config --cflags $(LIBS))
+	LDFLAGS += $(shell pkg-config --libs $(LIBS))
+else
+ifneq ($(MAKECMDGOALS), clean)
+MISSING_LIBS = $(shell for lib in $(LIBS) ; do if ! pkg-config $$lib ; then echo $$lib ; fi ; done)
+$(warning ERROR -- Cannot compile Toxic)
+$(warning ERROR -- You need these libraries)
+$(warning ERROR -- $(MISSING_LIBS))
+$(error ERROR)
+endif
+endif