【移动应用开发技术】Android中如何使用Android.mk模板

【移动应用开发技术】Android中如何使用Android.mk模板

这篇文章将为大家详细讲解有关Android中如何使用Android.mk模板，文章内容质量较高，因此在下分享给大家做个参考，希望大家阅读完这篇文章后对相关知识有一定的了解。Android开发之Android.mk模板的实例详解

1.如何自动添加需要编译的源文件列表

2.如何添加第三方静态库、动态库的依赖

3.如何构造一个完整的NDK工程框架

假设我们的项目依赖libmath.a,libjson.a,libffmpeg.so这几个第三方库文件，项目包含如下几个模块：algorithm，core，network，utils，tests，每个模块都有若干个.c/.h文件，我们要把整个工程编译为动态库，并通过native_sdk.c中的函数向Java层提供调用接口。

那么，我们可以对Android工程的jni目录，做如下划分：

对应的Android.mk文件的写法示例如下（注：工程文件可以到我的Github（@Jhuster/Android）中在线查看，也可以在本博文最后的附件中下载）：LOCAL_PATH

:=

$(call

my-dir)

3RD_INC_DIR

=

$(LOCAL_PATH)/3rd/inc

3RD_LIB_DIR

=

$(LOCAL_PATH)/3rd/libs

#

Prebuild

the

3rd

libraries

include

$(CLEAR_VARS)

LOCAL_MODULE

:=

math

LOCAL_SRC_FILES

:=

$(3RD_LIB_DIR)/libmath.a

include

$(PREBUILT_STATIC_LIBRARY)

include

$(CLEAR_VARS)

LOCAL_MODULE

:=

json

LOCAL_SRC_FILES

:=

$(3RD_LIB_DIR)/libjson.a

include

$(PREBUILT_STATIC_LIBRARY)

include

$(CLEAR_VARS)

LOCAL_MODULE

:=

ffmpeg

LOCAL_SRC_FILES

:=

$(3RD_LIB_DIR)/libffmpeg.so

include

$(PREBUILT_SHARED_LIBRARY)

#

Build

native

sdk

include

$(CLEAR_VARS)

LOCAL_MODULE

:=

native_sdk

LOCAL_SRC_FILES

:=

\

$(subst

$(LOCAL_PATH)/,,$(wildcard

$(LOCAL_PATH)/src/algorithm/*.c))

\

$(subst

$(LOCAL_PATH)/,,$(wildcard

$(LOCAL_PATH)/src/core/*.c))

\

$(subst

$(LOCAL_PATH)/,,$(wildcard

$(LOCAL_PATH)/src/network/*.c))

\

$(subst

$(LOCAL_PATH)/,,$(wildcard

$(LOCAL_PATH)/src/utils/*.c))

\

$(subst

$(LOCAL_PATH)/,,$(wildcard

$(LOCAL_PATH)/src/*.c))

LOCAL_C_INCLUDES

:=

$(3RD_INC_DIR)

LOCAL_C_INCLUDES

:=

$(LOCAL_PATH)/src

LOCAL_C_INCLUDES

:=

$(LOCAL_PATH)/src/algorithm

LOCAL_C_INCLUDES

+=

$(LOCAL_PATH)/src/core

LOCAL_C_INCLUDES

+=

$(LOCAL_PATH)/src/network

LOCAL_C_INCLUDES

+=

$(LOCAL_PATH)/src/utils

LOCAL_CFLAGS

:=

-DANDROID

LOCAL_LDLIBS

:=

-llog

LOCAL_STATIC_LIBRARIES

:=

math

json

LOCAL_SHARED_LIBRARIES

:=

ffmpeg

include

$(BUILD_SHARED_LIBRARY)

#

Build

tests

include

$(CLEAR_VARS)

LOCAL_MODULE

:=

test.out

LOCAL_SRC_FILES

:=

$(subst

$(LOCAL_PATH)/,,$(wildcard

$(LOCAL_PATH)/tests/*.c))

LOCAL_CFLAGS

:=

-DANDROID

LOCAL_C_INCLUDES

:=

$(LOCAL_PATH)/src

LOCAL_LDLIBS

:=

-llog

-fPIE

-pie

LOCAL_SHARED_LIBRARIES:=

native_sdk