编译HAL硬件抽象层模块,报找不到c文件错误

ayu@ayu-desktop:~/sda3/android$ mmm hardware/libhardware/modules/hello
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=2.3.3
TARGET_PRODUCT=generic
TARGET_BUILD_VARIANT=eng
TARGET_SIMULATOR=
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
HOST_ARCH=x86
HOST_OS=linux
HOST_BUILD_TYPE=release
BUILD_ID=GRI40
============================================
make:进入目录'/home/ayu/sda3/android'
build/core/dynamic_binary.mk:141: 警告：覆盖关于目标“.so”的命令
build/core/dynamic_binary.mk:108: 警告：忽略关于目标“.so”的旧命令
build/core/shared_library.mk:54: 警告：覆盖关于目标“.so”的命令
build/core/dynamic_binary.mk:141: 警告：忽略关于目标“.so”的旧命令
make: *** 没有规则可以创建“out/target/product/generic/obj/SHARED_LIBRARIES/hello.default_intermediates/hello.o”需要的目标“/hello.c”。 停止。-------------------hello目录下有hello.c文价,但是却报这样的错误,大家有没有碰到类似的问题呢