[Tools] [cmake] 調試筆記 --- 64位平台下的cmake配置

背景：

64位平台需要使用armv8版本編譯so。

調試：

從armv7版本配置上修改CMAKE_ANDROID_ARCH_ABI

armeabi-v7a

為

arm64-v8a

報如下錯誤：

Make Error at /opt/cmake-3.8.1-Linux-x86_64/share/cmake-3.8/Modules/Platform/Android-Determine.cmake:287 (message):
  Android: CMAKE_ANDROID_ARM_NEON is set but is valid only for 'armeabi-v7a'
  architecture.
Call Stack (most recent call first):
  /opt/cmake-3.8.1-Linux-x86_64/share/cmake-3.8/Modules/CMakeDetermineSystem.cmake:124 (include)
  CMakeLists.txt:3 (project)


CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
-- Configuring incomplete, errors occurred!
make: *** No targets specified and no makefile found.  Stop.
           

CMAKE_ANDROID_ARM_NEON是配合armv7做的設定，見官網說明：

移除CMAKE_ANDROID_ARM_NEON設定，編譯成功。

最終配置：

android.toolchain.camke如下：

set(CMAKE_SYSTEM_NAME Android)
set(CMAKE_SYSTEM_VERSION 23)
set(CMAKE_ANDROID_NDK_TOOLCHAIN_VERSION clang)
set(CMAKE_ANDROID_ARCH_ABI arm64-v8a)
#set(CMAKE_ANDROID_ARM_NEON ON)
set(CMAKE_ANDROID_NDK /opt/android-ndk-r14b)
set(CMAKE_ANDROID_STL_TYPE gnustl_static)

           

參考：

CMake