MAC NDK 编译 Cocos2dx 问题
1.NDK_ROOT :"please define NDK_ROOT"
解决：
在build_native.sh 中添加路径
NDK_ROOT="/Users/pc/Documents/android/android-ndk-r9d"
2.加密库cryptopp编译不过，错误fd_set 不认识
解决：http://morgwai.pl/ndkTutorial/
The last problem is that Crypto++ seems to rely on implicit inclusion of header file containing definition of fd_set. This is not the case when using STLport so you need to add the following preprocessor command somewhere in wait.h file:
#include <sys/select.h>
3.CCCommon.cpp 文件报错：
/cocos2dx/platform/android/CCCommon.cpp:54:77: error: format not a string literal and no format arguments [-Werror=format-security]
some warnings being treated as errors
解决：
修改自己项目 proj.android\jni\Application.mk （不是Android.mk）文件，在最后加上
APP_CPPFLAGS += -Wno-error=format-security 就可以了。
4.libluajit.a(lib_base.o):lib_base.c:function lj_cf_print: error: undefined reference to '__swbuf'
解决：http://cocos2d-x.org/news/307
We suggest you not to use NDK r10. Please use NDK r9d instead.
