/usr/bin/i686-w64-mingw32-gcc-4.9.2
/usr/bin/i686-w64-mingw32-gcc-ar
/usr/bin/i686-w64-mingw32-gcc
/usr/bin/i686-w64-mingw32-gcc-nm
/usr/bin/i686-w64-mingw32-gcc-ranlib
/usr/bin/i686-w64-mingw32-gcov
/usr/i686-w64-mingw32/sys-root/mingw/bin/libgcc_s_sjlj-1.dll
/usr/i686-w64-mingw32/sys-root/mingw/bin/libssp-0.dll
You may install this package on CentOS with
yum
install mingw32-gcc