qt报错 his file requires compiler and library support for the ISO C++ 2011 standard.

先看qt工程的一个错误
his file requires compiler and library support for the ISO C++ 2011 standard.
出现这种问题是因为qt工程使用了c11标准的库，因此需要改下pro的配置，更改方法如下
qt报错 his file requires compiler and library support for the ISO C++ 2011 standard.
执行clean ,重新构建

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