一个安卓Cmake增加项目对C++的支持的配置问题

[zq910515]

我项目需要添加依赖库。 ndk16

我的项目信息大致如下，一直build过不去
但是，我去掉CMakeLists.txt 文件中的
set_target_properties(libavcodec-56 ${CMAKE_SOURCE_DIR}/src/main/jniLibs/${ANDROID_ABI}/libavcodec-56.so)
就可顺利通过。
我想知道，我这需要怎么配置？

************************************************************************************************


*********************build.gradle 文件*********************************************

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.cloud.bs.ffmpegtest01"
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        externalNativeBuild {
            cmake {
                cppFlags ""
            }
            ndk {
                abiFilters "armeabi"
            }
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    externalNativeBuild {
        cmake {
            path 'CMakeLists.txt'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

*********************CMakeLists.txt 文件*********************************************

cmake_minimum_required(VERSION 3.4.1)

include_directories(
    src/main/cpp/include
)

set(LIBS ${CMAKE_SOURCE_DIR}/src/main/jniLibs/${ANDROID_ABI})

add_library( # Sets the name of the library.
             ffmpeg-lib

             # Sets the library as a shared library.
             SHARED

             # Provides a relative path to your source file(s).
             src/main/cpp/ffmpeg-lib.cpp)

add_library(libavcodec-56 SHARED IMPORTED)
set_target_properties(libavcodec-56  ${CMAKE_SOURCE_DIR}/src/main/jniLibs/${ANDROID_ABI}/libavcodec-56.so)

find_library( # Sets the name of the path variable.
              log-lib

              # Specifies the name of the NDK library that
              # you want CMake to locate.
              log )

target_link_libraries( # Specifies the target library.
                ffmpeg-lib

                 # Links the target library to the log library
                 # included in the NDK.
                #  libavcodec-56
                 ${log-lib})

Build command failed.


Error while executing process D:\Android\SDK\cmake\3.6.4111459\bin\cmake.exe with arguments {-HD:\Android\MyApplications\FFMpegTest01\app -BD:\Android\MyApplications\FFMpegTest01\app\.externalNativeBuild\cmake\debug\armeabi -DANDROID_ABI=armeabi -DANDROID_PLATFORM=android-15 -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=D:\Android\MyApplications\FFMpegTest01\app\build\intermediates\cmake\debug\obj\armeabi -DCMAKE_BUILD_TYPE=Debug -DANDROID_NDK=D:\Android\SDK\android-ndk-r16b_x64 -DCMAKE_CXX_FLAGS= -DCMAKE_TOOLCHAIN_FILE=D:\Android\SDK\android-ndk-r16b_x64\build\cmake\android.toolchain.cmake -DCMAKE_MAKE_PROGRAM=D:\Android\SDK\cmake\3.6.4111459\bin\ninja.exe -GAndroid Gradle - Ninja}


 (include)   CMakeLists.txt 


 (include)   CMakeLists.txt 


CMake Error at CMakeLists.txt:20 (set_target_properties):


-- Configuring incomplete, errors occurred!

*********************************Build信息********************************************
See also "D:/Android/MyApplications/FFMpegTest01/app/.externalNativeBuild/cmake/debug/armeabi/CMakeFiles/CMakeOutput.log".


Build command failed.


Error while executing process D:\Android\SDK\cmake\3.6.4111459\bin\cmake.exe with arguments {-HD:\Android\MyApplications\FFMpegTest01\app -BD:\Android\MyApplications\FFMpegTest01\app\.externalNativeBuild\cmake\release\armeabi -DANDROID_ABI=armeabi -DANDROID_PLATFORM=android-15 -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=D:\Android\MyApplications\FFMpegTest01\app\build\intermediates\cmake\release\obj\armeabi -DCMAKE_BUILD_TYPE=Release -DANDROID_NDK=D:\Android\SDK\android-ndk-r16b_x64 -DCMAKE_CXX_FLAGS= -DCMAKE_TOOLCHAIN_FILE=D:\Android\SDK\android-ndk-r16b_x64\build\cmake\android.toolchain.cmake -DCMAKE_MAKE_PROGRAM=D:\Android\SDK\cmake\3.6.4111459\bin\ninja.exe -GAndroid Gradle - Ninja}


 (include)   CMakeLists.txt 


 (include)   CMakeLists.txt 


CMake Error at CMakeLists.txt:20 (set_target_properties):


-- Configuring incomplete, errors occurred!


See also "D:/Android/MyApplications/FFMpegTest01/app/.externalNativeBuild/cmake/release/armeabi/CMakeFiles/CMakeOutput.log".

[zq910515]

找到了，少了个参数！！！！！

[jzp12]

SET_TARGET_PROPERTIES的输入参数缺少:PROPERTIES IMPORTED_LOCATION
->
set_target_properties(libavcodec-56 PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/src/main/jniLibs/${ANDROID_ABI}/libavcodec-56.so)

说明
set_target_properties( libavcodec-56 #指定目标库名称
PROPERTIES IMPORTED_LOCATION #指明要设置的参数
${CMAKE_SOURCE_DIR}/src/main/jniLibs/${ANDROID_ABI}/libavcodec-56.so #设定导入库的路径)

[jklwan]

set_target_properties应该是少了PROPERTIES