使用Android.bp在Android源码下编译C++项目

Android.bp用法

• 1.把自己的C++项目放到Android源码目录下，进入项目，执行mm或mma编译项目

• 2.会自动查找此目录下所有的Android.bp，根据bp的规则编译项目

Android.bp函数作用介绍

//为 C/C++ 编译（cc_library、cc_binary等模块）设置一些默认的编译选项和属性,
cc_defaults {
    name: "my_defaults",

    // cpp_std: "c++14",

    //设置编译选项
    cflags: [
        "-Wall",
        "-Werror",
        "-Wextra",
        "-DLOG_TAG=\"CaEvs\""  //定义宏 LOG_TAG="CaEvs"
    ]
}

//libtest_headers模块
//用于导出头文件，其它模块引用此模块时，即可直接使用此模块导出的头文件
cc_library_headers {
    name: "libtest_headers",

    export_include_dirs: [
        "include"
    ]
}

//创建一个名为libtest的模块
//此模块指定生成动态库libtest.so
cc_library_shared {
    name: "libtest",

    //引用my_defaults中设好的配置
    defaults: [
        "my_defaults"
    ],

    //指定从哪个路径查找源文件
    srcs: [
        "src/*.cpp"
    ],

    //指定不包含哪些源文件
    exclude_srcs: [
        "src/render/window/WaylandWindow.cpp",
        "src/render/window/X11Window.cpp",
        "src/render/renderer/GlCamera.cpp",
    ],

    //指定需要链接的动态库
    shared_libs: [
        "libz",
        "libtinyxml2",
        "libnativewindow",
        "libandroid",
    ],

    compile_multilib: "64",

    //指定需要链接的静态库
    static_libs: [
        "libjpeg",
        "libpng",
        "libavfilter_a",
        "libavformat_a",
        "libavcodec_a",
        "libavutil_a",
        "libswresample_a",
        "libswscale_a",
        "libavdevice_a",
    ],

    //引入libtest_headers模块
    header_libs:[
        "libtest_headers"
    ],

    //libtest模块导出的头文件。
    //可以被其它模块使用
    export_include_dirs: ["include"],

    //导出本模块引用的libpng，libjpeg模块的头文件
    export_static_lib_headers: [
        "libpng",
        "libjpeg"
    ],

    //导出本模块引用的libtinyxml2模块的头文件
    export_shared_lib_headers: [
        "libtinyxml2",
    ],

    //导出本模块引用的libtest_headers模块的头文件
    export_header_lib_headers: [
        "libtest_headers"
    ],

    cflags: [
        "-Wno-unused-parameter",
        "-Wno-unused-private-field",
        "-Wno-unused-variable",
        "-DEVS_USE_ANDROID_WINDOW",//定义宏
    ]
}

//创建一个名为libtest_static的模块
//此模块指定生成静态库libtest_static.a
cc_library_static {
    name: "libtest_static",

    defaults: [
        "caevs_defaults"
    ],

    srcs: [
        "src/*.cpp"
    ],

    shared_libs: [
        "libbase",
        "libbinder",
        "libcutils",
        "libutils",
        "libui",
        "libgui",
        "libhidlbase",
        "libhardware",
        "libcamera_metadata",
        "android.hardware.camera.device@3.2",
        "android.hardware.automotive.evs@1.0",
        "android.hardware.automotive.evs@1.1",
        "android.hardware.automotive.vehicle@2.0",
        "libtinyxml2",
        "libz",
        "libnativewindow",
        "libandroid",
    ],

    compile_multilib: "64",

    static_libs: [
        "libjpeg",
        "libpng",
        "libavfilter_a",
        "libavformat_a",
        "libavcodec_a",
        "libavutil_a",
        "libswresample_a",
        "libswscale_a",
        "libavdevice_a",
    ],

    export_include_dirs: ["include"],

    cflags: [
        "-Wno-unused-parameter",
        "-Wno-unused-private-field",
        "-Wno-unused-variable"
    ]
}

//引入预编译库
//创建一个libavfilter_a模块，
//此模块为静态库libavfilter.a，生成一个别名为libavfilter_a.a(可以取一样的名字)的静态库，
//在其它模块中可直接引用此模块
cc_prebuilt_library_static {
    name: "libavfilter_a",
    check_elf_files:false,

    arch: {
        arm: {
            srcs: [
                    "lib/android/armv7-a/libavfilter.a",
                ],
        },
        arm64: {
            srcs: [
                    "lib/android/aarch64/libavfilter.a",
                ],
        },
    },

    export_include_dirs: [
        "include"
    ],

    strip: {
        keep_symbols: true,
    }

}

//参考cc_prebuilt_library_static
cc_prebuilt_library_shared {
}