安装mingw-5.1.6之后，就可以配置c++ MinGW环境变量了，以下是配置说明

MINGW_PATH=D:\MinGW   （看你自己的安装位置）
C_INCLUDE_PATH=%MINGW_PATH%\include;%MINGW_PATH%\lib\gcc\mingw32\3.4.5\include
CPLUS_INCLUDE_PATH=%MINGW_PATH%\include\c++\3.4.5;%MINGW_PATH%\include\c++\3.4.5\mingw32;%MINGW_PATH%\include\c++\3.4.5\backward;%C_INCLUDE_PATH%
LIBRARY_PATH=%MINGW_PATH%\lib;%MINGW_PATH%\lib\gcc\mingw32\3.4.5

修改：

PATH=（原来的，不要删，否则后果自负）;%MINGW_PATH%\bin;%MINGW_PATH%\libexec\gcc\mingw32\3.4.5

最后：考虑安装个msys 本文链接地址: c++ MinGW环境变量