问题描述
我正在尝试为我的 Android 库添加一个条带调试符号步骤,其中包括用于不同 ABI 的本机共享库,例如x86/native-lib.so
、x86_64/native-lib.so
、arm64-v8a/native-lib.so
等
I am trying to add a strip debug symbols step for my Android library which includes native shared libraries for different ABIs, e.g. x86/native-lib.so
, x86_64/native-lib.so
, arm64-v8a/native-lib.so
, etc.
我了解剥离命令必须针对每个 ABI.因此,我需要调用正确的 strip 命令,为此我需要在构建期间知道它的正确路径.
I understand that the strip command must be respective to each ABI. So, I need to invoke the correct strip command, for which I need to know its correct path during build time.
例如,对于 ABI x86_64,我需要进行以下路径设置:
For example, for ABI x86_64, I need to have below path setting:
set(STRIP ~/Library/Android/android-ndk-r16b/toolchains/x86_64-4.9/prebuilt/darwin-x86_64/bin/x86_64-linux-android-strip)
add_custom_command(TARGET ${SHARED_LIBRARY_NAME} POST_BUILD
COMMAND ${STRIP}
"${DIST_LIBS_DIR}/${LIB_BUILD_TYPE}/${ANDROID_ABI}/lib${SHARED_LIBRARY_NAME}.so"
COMMENT "Strip debug symbols done on final binary.")
我需要的路径如下图所示:
The path I need is illustrated like below:
所以,我的问题是:
是否有现有的 CMake 变量指向此路径,即 /android-ndk-r16b/toolchains/???/prebuilt/???/bin/???-???-???-strip
?
如果没有,有没有办法利用其他已知的 Android CMake 变量来形成这条路径,例如ANDROID_NDK
、ANDROID_ABI
等等?
If not, is there a way to form this path utilising other known Android CMake variable, e.g. ANDROID_NDK
, ANDROID_ABI
, etc?
推荐答案
非常感谢 @Alex Cohn 指出通常存在的文件 android.toolchain.cmake
在目录 ~/Library/Android/sdk/cmake/cmake_version_xxx/android.toolchain.cmake
在 macOS 上.
Thanks @Alex Cohn a lot for pointing out the file android.toolchain.cmake
which usually exists at directory ~/Library/Android/sdk/cmake/cmake_version_xxx/android.toolchain.cmake
on macOS.
里面已经配置了很多有用的 Android CMake 变量,例如
There are many useful Android CMake variables already configured inside, e.g.
ANDROID_NDK
ANDROID_TOOLCHAIN
ANDROID_ABI
ANDROID_PLATFORM
ANDROID_STL
ANDROID_PIE
ANDROID_CPP_FEATURES
ANDROID_ALLOW_UNDEFINED_SYMBOLS
ANDROID_ARM_MODE
ANDROID_ARM_NEON
ANDROID_DISABLE_NO_EXECUTE
ANDROID_DISABLE_RELRO
ANDROID_DISABLE_FORMAT_STRING_CHECKS
ANDROID_CCACHE
ANDROID_TOOLCHAIN_PREFIX
正是我要找的,所以我的最终 CMake 脚本如下:
And the one ANDROID_TOOLCHAIN_PREFIX
is exactly what I looked for, so my final CMake script comes into below:
add_custom_command(TARGET ${SHARED_LIBRARY_NAME} POST_BUILD
COMMAND "${ANDROID_TOOLCHAIN_PREFIX}strip" -g -S -d --strip-debug --verbose
"${DIST_LIBS_DIR}/${LIB_BUILD_TYPE}/${ANDROID_ABI}/lib${SHARED_LIBRARY_NAME}.so"
COMMENT "Strip debug symbols done on final binary.")
而且我不需要显式传递任何额外的参数,即DCMAKE_TOOLCHAIN_FILE=android.toolchain.cmake
,从命令行到构建过程.因为,这个文件,即 android.toolchain.cmake
,已经被 Android 原生构建系统自动考虑了.
And I don't need to explicitly pass any additional arguments, i.e. DCMAKE_TOOLCHAIN_FILE=android.toolchain.cmake
, from command line to the build process. Because, this file, i.e. android.toolchain.cmake
, was already taken into account automatically by Android native build system.
这篇关于“strip"的Android NDK路径变量CMake 构建工具链中的命令的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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