根据教程，使用cocos new…… 创建一个工程以后，proj.win32可以正常运行，在执行proj.android里面的build_native.py时报错，错误信息是：
The Selected NDK toolchain version was 4.8 !
'D:Program' 不是内部或外部命令，也不是可运行的程序
或批处理文件。
Traceback (most recent call last):
File "build_native.py", line 166, in
build(opts.ndk_build_param,opts.android_platform,opts.build_mode)
File "build_native.py", line 153, in build
do_build(cocos_root, ndk_root, app_android_root,ndk_build_param,sdk_root,and
roid_platform,build_mode)
File "build_native.py", line 89, in do_build
raise Exception("Build dynamic library for project " + app_android_root +
" ] fails!")
Exception: Build dynamic library for project D:cocos2d_ProjectFirstCocospro
j.android ] fails!
用的cocos2d-x-3.1版本，求大神解答。。