Package: mingw32-gcc-c++

"mingw32-gcc-c++" package binaries on CentOS:

/usr/bin/i686-w64-mingw32-c++ /usr/bin/i686-w64-mingw32-g++ /usr/i686-w64-mingw32/sys-root/mingw/bin/libstdc++-6.dll

You may install this package on CentOS with yum install mingw32-gcc-c++