-all: main.c
- $(CC) -o mt-rfidi $(INC) main.c -luFCoder-armhf
+OUTPUT_DIR = build
+
+mtrfid_SRCS = signal_exit.c mt_rfid.c
+mtrfid_LIBS = -lev -luFCoder-armhf
+
+mtserver_SRCS = signal_exit.c mt_server.c
+mtserver_LIBS = -lev -lwebsockets
+
+mtkeys_SRCS = signal_exit.c mt_keys.c
+mtkeys_LIBS = -lev
+
+mtaio_SRCS = signal_exit.c mt_rfid.c mt_keys.c mt_server.c mt_aio.c
+mtaio_LIBS = -lev -luFCoder-armhf -lwebsockets
+mtaio_DEFS = -DNO_MAIN
+
+all: mtrfid mtserver mtkeys mtaio
+
+.PHONY: clean
+
+clean:
+ rm -rf $(OUTPUT_DIR)
+
+.SECONDEXPANSION:
+mt%: $$($$@_SRCS)
+ mkdir -p $(OUTPUT_DIR)
+ $(CC) $(CFLAGS) $($@_DEFS) -o $(OUTPUT_DIR)/$@ $^ $($@_LIBS)