Mac下，新装的环境，新建一个项目，运行build_native.py出现下面的错误，求教高手帮忙。
Android NDK: ERROR:/Users/xy/Android/android-ndk-r10b/sources/cxx-stl/gnu-libstdc++/Android.mk:gnustl_static: LOCAL_SRC_FILES points to a missing file
Android NDK: Check that /Users/xy/Android/android-ndk-r10b/sources/cxx-stl/gnu-libstdc++/4.8/libs/armeabi/thumb/libgnustl_static.a exists or that its path is correct
make: Entering directory /Users/xy/Desktop/testDemo/proj.android' /Users/xy/Android/android-ndk-r10b/build/core/prebuilt-library.mk:45: *** Android NDK: Aborting . Stop. make: Leaving directory /Users/xy/Desktop/testDemo/proj.android’
Ndk build failed!
