arm-linux-androideabi-4.8/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-g++: Command not found 解决方法

执行下列命令时：

ndk-build -j16 

出现如下错误：

Android NDK: WARNING: Ignoring unknown import directory: jni/../../../../..//3rdParty/libjpeg-turbo
Android NDK: WARNING: Ignoring unknown import directory: jni/../../../../..//3rdParty/breakpad/android
[armeabi-v7a] Compile++      : OculusMediaSurface <= GlProgram.cpp
make: /Users/zexu/Library/Android/android-ndk-r14b/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-g++: Command not found
make: *** [obj/local/armeabi-v7a/objs/OculusMediaSurface/__/__/__/__/__/VrAppFramework/Src/GlProgram.o] Error 127
make: *** Waiting for unfinished jobs....
[armeabi-v7a] Compile++      : OculusMediaSurface <= GlGeometry.cpp
[armeabi-v7a] Compile++      : OculusMediaSurface <= MediaSurfacePlugin.cpp
make: /Users/zexu/Library/Android/android-ndk-r14b/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-g++: Command not found
make: *** [obj/local/armeabi-v7a/objs/OculusMediaSurface/__/__/__/Src/MediaSurfacePlugin.o] Error 127
make: /Users/zexu/Library/Android/android-ndk-r14b/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-g++: Command not found
make: *** [obj/local/armeabi-v7a/objs/OculusMediaSurface/__/__/__/__/__/VrAppFramework/Src/GlGeometry.o] Error 127
[armeabi-v7a] Compile++      : OculusMediaSurface <= SurfaceTexture.cpp
make: /Users/zexu/Library/Android/android-ndk-r14b/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-g++: Command not found
make: *** [obj/local/armeabi-v7a/objs/OculusMediaSurface/__/__/__/Src/SurfaceTexture.o] Error 127

在机器上搜索果然没有arm-linux-androideabi-4.8这个文件夹， 但是有 arm-linux-androideabi-4.9，网上搜了很多帖子，没有和我这个情况相同的，最后灵光一闪

添加了一个软链，

ln -s arm-linux-androideabi-4.9 arm-linux-androideabi-4.8

编译通过。