用cmake+ndk的时候遇到一个错误：

fatal error: 'asm/types.h' file not found

用的是ndk自带的 build/cmake/android.toolchain.cmake。

看现象是include路径没包含进来。

解决方案，修改 build/cmake/android.toolchain.cmake，增加：

if (${ANDROID_ABI} STREQUAL "x86_64")
    include_directories(${ANDROID_SYSROOT}/usr/include/x86_64-linux-android)
elseif (${ANDROID_ABI} STREQUAL "x86")
    include_directories(${ANDROID_SYSROOT}/usr/include/i686-linux-android)
elseif (${ANDROID_ABI} STREQUAL "arm64-v8a")
    include_directories(${ANDROID_SYSROOT}/usr/include/aarch64-linux-android)
elseif (${ANDROID_ABI} STREQUAL "armeabi-v7a")
    include_directories(${ANDROID_SYSROOT}/usr/include/arm-linux-androideabi)
endif()

搞定。

Comments: (on github issue)