问题：
**** Build of configuration Default for project TestCpp ****
bash D:/2.2.6/cocos2d-x-2.2.6/samples/Cpp/TestCpp/proj.android/build_native.sh
NDK_ROOT not defined. Please define NDK_ROOT in your environment or in local.properties
**** Build Finished ****
NDK_ROOT not defined. Please define NDK_ROOT in your environment or in local.properties
解决：
就是NDK_ROOT 没有找到，但是我明明已经定义了，实在没办法，只能在
build_native.sh里面加了
# paths
NDK_ROOT=/cygdrive/e/worksoft/android-ndk-r9d //新加
if [ -z "${NDK_ROOT+aaa}" ];then
echo "NDK_ROOT not defined. Please define NDK_ROOT in your environment or in local.properties"
exit 1
fi
