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  • 在linux环境下编译android so库

    (1) 配置Android NDK环境

    https://developer.android.google.cn/ndk/downloads/older_releases.html

    1.下载android-ndk64-r10b-linux-x86_64.tar.bz2,下载地址:http://dl.google.com/android/ndk/android-ndk64-r10b-linux-x86_64.tar.bz2

    2. 把下载好的android-ndk64-r10b版本解压

    3.配置环境变量命令:$sudo gedit ~/.bashrc

    添加以下代码:

    export   NDK=/home/davebobo/android-ndk-r10b

    export   PATH=${PATH}:$NDK  保存关闭。

    5.source  ~/.bashrc使其修改的文件生效。

    6.ndk-build看看咱们配置环境变量成功没,只要没出command not found就证明环境变量配置成功,如果成功显示如下,

    (2) Android mk文件编写

    LOCAL_PATH := $(call my-dir)
    
    include $(CLEAR_VARS)
    # OpenCV
    OPENCV_CAMERA_MODULES:=on
    OPENCV_INSTALL_MODULES:=on
    OPENCV_LIB_TYPE:=STATIC
    #include D:projectAndroidOpenCV-2.4.10-android-sdksdk
    ativejniOpenCV.mk
    include $(LOCAL_PATH)/opencv_android/jni/OpenCV.mk
    
    LOCAL_MODULE    := facequality              
    LOCAL_SRC_FILES += facequality.cpp 
        
    LOCAL_LDLIBS += -L$(SYSROOT)/usr/lib -llog
    LOCAL_CFLAGS += -ffast-math -lpthread -ldl -O3 -std=c++11
    LOCAL_CFLAGS += -DBUILD_TBB=ON -DWITH_TBB=ON
    LOCAL_LDFLAGS += -Wl,--gc-sections
    
    LOCAL_CFLAGS += -fopenmp
    LOCAL_CPPFLAGS += -fopenmp
    LOCAL_LDFLAGS += -fopenmp
    
    LOCAL_LDLIBS += -lz -llog -ljnigraphics
    
    include $(BUILD_SHARED_LIBRARY)

    Application.mk 编写

    #Application.mk 控制编译的版本
    APP_STL:=c++_shared
    APP_CPPFLAGS:=-frtti -fexceptions
    APP_ABI := arm64-v8a

    (3) 目录文件

    (4) 编译

    $ ndk-build
    [arm64-v8a] Compile++ : facequality <= facequality.cpp
    jni/facequality.cpp:116:1: warning: control may reach end of non-void function [-Wreturn-type]
    }
    ^
    1 warning generated.
    [arm64-v8a] SharedLibrary : libfacequality.so
    [arm64-v8a] Install : libfacequality.so => libs/arm64-v8a/libfacequality.so

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  • 原文地址:https://www.cnblogs.com/adong7639/p/9797020.html
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