浅析Android.mk

例如，某一子项目的目录层次如下：

src/foo/Android.mk 
src/foo/lib1/Android.mk 
src/foo/lib2/Android.mk

如果 src/foo/Android.mk 包含一行：

include $(call all-subdir-makefiles)

那么它就会自动包含 src/foo/lib1/Android.mk 和 src/foo/lib2/Android.mk。

这项功能用于向编译系统提供深层次嵌套的代码目录层次。

注意，在默认情况下，NDK 将会只搜索在 src/*/Android.mk 中的文件。

（3）this-makefile: 返回当前Makefile 的路径(即这个函数调用的地方)

（4）parent-makefile: 返回调用树中父 Makefile 路径。即包含当前Makefile的Makefile 路径。

（5）grand-parent-makefile：返回调用树中父Makefile的父Makefile的路径

六、 Android.mk示例

#编译静态库 
LOCAL_PATH := $(call my-dir) 
include $(CLEAR_VARS) 
LOCAL_MODULE = libhellos 
LOCAL_CFLAGS = $(L_CFLAGS) 
LOCAL_SRC_FILES = hellos.c 
LOCAL_C_INCLUDES = $(INCLUDES) 
LOCAL_SHARED_LIBRARIES := libcutils 
LOCAL_COPY_HEADERS_TO := libhellos 
LOCAL_COPY_HEADERS := hellos.h 
include $(BUILD_STATIC_LIBRARY) 
#编译动态库 
LOCAL_PATH := $(call my-dir) 
include $(CLEAR_VARS) 
LOCAL_MODULE = libhellod 
LOCAL_CFLAGS = $(L_CFLAGS) 
LOCAL_SRC_FILES = hellod.c 
LOCAL_C_INCLUDES = $(INCLUDES) 
LOCAL_SHARED_LIBRARIES := libcutils 
LOCAL_COPY_HEADERS_TO := libhellod 
LOCAL_COPY_HEADERS := hellod.h 
include $(BUILD_SHARED_LIBRARY) 
#使用静态库 
LOCAL_PATH := $(call my-dir) 
include $(CLEAR_VARS) 
LOCAL_MODULE := hellos 
LOCAL_STATIC_LIBRARIES := libhellos 
LOCAL_SHARED_LIBRARIES := 
LOCAL_LDLIBS += -ldl 
LOCAL_CFLAGS := $(L_CFLAGS) 
LOCAL_SRC_FILES := mains.c 
LOCAL_C_INCLUDES := $(INCLUDES) 
include $(BUILD_EXECUTABLE) 
#使用动态库 
LOCAL_PATH := $(call my-dir) 
include $(CLEAR_VARS) 
LOCAL_MODULE := hellod 
LOCAL_MODULE_TAGS := debug 
LOCAL_SHARED_LIBRARIES := libc libcutils libhellod 
LOCAL_LDLIBS += -ldl 
LOCAL_CFLAGS := $(L_CFLAGS) 
LOCAL_SRC_FILES := maind.c 
LOCAL_C_INCLUDES := $(INCLUDES) 
include $(BUILD_EXECUTABLE) 

注：相关教程知识阅读请移步到Android开发频道。