不再支持 Android NDK APP_STL gnustl_shared

Question

我正在使用 Android Studio 3.3 Canady 11 构建一个 android NDK 项目，在构建项目时，我收到此错误：

构建命令失败。 执行过程时出错 /home/ndqa/opt/Android-SDK/ndk-bundle/ndk-build 带参数 {NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=/home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/Android.mk NDK_APPLICATION_MK=/home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/Application.mk APP_ABI=armeabi-v7a NDK_ALL_ABIS=armeabi-v7a NDK_DEBUG=1 APP_PLATFORM=android-23 NDK_OUT=/home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/obj NDK_LIBS_OUT=/home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/lib APP_PLATFORM=android-21 -j10 APP_SHORT_COMMANDS=false LOCAL_SHORT_COMMANDS=false -B -n}

/home/ndqa/opt/Android-SDK/ndk-bundle/build/core/add-application.mk:178： *** Android NDK：不再支持 APP_STL gnustl_shared。请切换到 c++_static 或 c++_shared。看 https://developer.android.com/ndk/guides/cpp-support.html 了解更多 信息。 .停下来。

我的机器是 Ubuntu 18，它有 android SDK，NDK 完整。 请帮我解决这个问题。 谢谢大家！

更新 如果我将 gnustl_shared 替换为 c++_static 或 c++_shared，则会显示更多错误：

Build command failed.
Error while executing process /home/ndqa/opt/Android-SDK/ndk-bundle/ndk-build with arguments {NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=/home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/Android.mk NDK_APPLICATION_MK=/home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/Application.mk APP_ABI=armeabi-v7a NDK_ALL_ABIS=armeabi-v7a NDK_DEBUG=1 APP_PLATFORM=android-23 NDK_OUT=/home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/obj NDK_LIBS_OUT=/home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/lib APP_PLATFORM=android-21 -j10 APP_SHORT_COMMANDS=false LOCAL_SHORT_COMMANDS=false -B -n}
/home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/protobuf-3.6.1
rm -f /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/lib/armeabi-v7a/*
rm -f /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/lib/armeabi-v7a/gdbserver
rm -f /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/lib/armeabi-v7a/gdb.setup
mkdir -p /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/lib/armeabi-v7a
echo [armeabi-v7a] "Gdbserver      ": "[arm-linux-androideabi] /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/lib/armeabi-v7a/gdbserver"
install -p /home/ndqa/opt/Android-SDK/ndk-bundle/prebuilt/android-arm/gdbserver/gdbserver /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/lib/armeabi-v7a/gdbserver
echo [armeabi-v7a] "Gdbsetup       ": "/home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/lib/armeabi-v7a/gdb.setup"
echo "set solib-search-path /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/obj/local/armeabi-v7a" > /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/lib/armeabi-v7a/gdb.setup
echo "directory /home/ndqa/opt/Android-SDK/ndk-bundle/sysroot /home/ndqa/opt/Android-SDK/ndk-bundle/sources/android/support /home/ndqa/opt/Android-SDK/ndk-bundle/sources/cxx-stl/llvm-libc++ /home/ndqa/opt/Android-SDK/ndk-bundle/sources/cxx-stl/llvm-libc++abi/include /home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/protobuf-3.6.1/src/ /home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/include /home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/protobuf-3.6.1/android/include /home/ndqa/opt/Android-SDK/ndk-bundle/sources/cxx-stl/llvm-libc++/include" >> /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/lib/armeabi-v7a/gdb.setup
mkdir -p /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/obj/local/armeabi-v7a/objs-debug/main
echo [armeabi-v7a] "Compile++ arm  ": "main <= AndroidJni.cpp"
/home/ndqa/opt/Android-SDK/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++ -MMD -MP -MF /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/obj/local/armeabi-v7a/objs-debug/main/AndroidJni.o.d -target armv7-none-linux-androideabi21 -ffunction-sections -fdata-sections -funwind-tables -no-canonical-prefixes  -g -Wno-invalid-command-line-argument -Wno-unused-command-line-argument  -fno-exceptions -fno-rtti -gcc-toolchain /home/ndqa/opt/Android-SDK/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64 -fpic -march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16  -marm -O0 -UNDEBUG -fno-limit-debug-info  -I/home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/protobuf-3.6.1/src/ -I/home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/include -I/home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/protobuf-3.6.1/android/include -I/home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/protobuf-3.6.1/src -I/home/ndqa/opt/Android-SDK/ndk-bundle/sources/cxx-stl/llvm-libc++/include -I/home/ndqa/opt/Android-SDK/ndk-bundle/sources/cxx-stl/llvm-libc++abi/include -I/home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp -std=c++11    -DANDROID -D GOOGLE_PROTOBUF_NO_RTTI=1 -D GOOGLE_PROTOBUF_NO_RTTI=1 -Wa,--noexecstack -Wformat -Werror=format-security -std=c++11 -std=c++11 -std=c++11 -std=gnu++11  --sysroot /home/ndqa/opt/Android-SDK/ndk-bundle/sysroot -isystem /home/ndqa/opt/Android-SDK/ndk-bundle/sysroot/usr/include/arm-linux-androideabi -c  /home/ndqa/Documents/PROJ/code/MyProj/app/src/main/cpp/AndroidJni.cpp -o /home/ndqa/Documents/PROJ/code/MyProj/app/build/intermediates/ndkBuild/debug/obj/local/armeabi-v7a/objs-debug/main/AndroidJni.o

Answer 1

1. 在文件Application.mk 中将APP_STL := gnustl_static 切换为c++_static 或c++_shared

APP_STL := c++_static

1. Android 操作系统几年前切换到 clang。 NDK 的未来版本将移除 GCC，因此您越早开始使用 clang 测试您的项目越好！

1. 对于 ndk-build，删除设置 NDK_TOOLCHAIN 或 NDK_TOOLCHAIN_VERSION 的行。

2. 对于 cmake，删除行设置 ANDROID_TOOLCHAIN。

3. 对于独立工具链，使用 clang/clang++ 二进制文件而不是 gcc/g++。

4. 对于其他构建系统，请询问该构建系统的所有者。

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查看更多详情：

https://developer.android.com/ndk/guides/cpp-support

https://android.googlesource.com/platform/ndk/+/master/docs/ClangMigration.md#how-to-fix-common-problems