android 加入第三方jar 编译错误

在makefile文件中加入

LOCAL_STATIC_JAVA_LIBRARIES := xxx

LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES :=xxx:libs/xxx.jar

工程目录下执行mm -j8，报以下错误：

make: *** No rule to make target `out/target/common/obj/JAVA_LIBRARIES/xxx_intermediates/javalib.jar', needed by `out/target/common/obj/APPS/xxx_intermediates/classes-full-debug.jar'.  Stop.

经过测试，在sdk根目录执行make clean或make clobber都无法解决问题

解决方法：在/out/target/common/obj/JAVA_LIBRARIES文件夹下，新建xxx_intermediates文件夹，将xxx.jar放入该文件夹，重命名为javalib.jar