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windows 与 linux 的头文件区别:
#if defined(WIN32) || defined(WIN64)
#include <hash_map>
using namespace stdext;
#else
#include <ext/hash_map>
using namespace __gnu_cxx;
#endif
编译出现警告如下：
/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/backward/backward_warning.h:28:2: 警告：#warning This file includes at least one deprecated or antiquated header which may be removed without further notice at a future date. Please use a non-deprecated interface with equivalent functionality instead. For a listing of replacement headers and interfaces, consult the file backward_warning.h. To disable this warning use -Wno-deprecated.
解决:
在CXX_FLAGS 中添加 -std=c++0x 以及 -Wno-deprecated 这两个选项
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原文地址：http://www.cnblogs.com/sylar-liang/p/4353485.html
