gcc: add a basic makefile

Makefile

@@ -0,0 +1,22 @@
+# default target
+all:
+
+# default build flags
+CFLAGS = -g -O2 -Wall
+
+# user-defined config file (if available)
+-include config.mak
+
+SYNC_OBJS = \
+	sync/data.o \
+	sync/device.o \
+	sync/track.o
+
+all: lib/librocket.a
+
+clean:
+	$(RM) -rf $(SYNC_OBJS) lib
+
+lib/librocket.a: $(SYNC_OBJS)
+	@mkdir lib
+	$(AR) $(ARFLAGS) $@ $<