On Tue, 30 Oct 2018, 06:09 Ekant V. vats wrote: > > Hello,I am using Fedora 28 and gcc version 8.2 for installation of Gamess > but it is showing the error. So I have to install gcc version 6.4 first. > How may I install the 6.4 gcc version in fedora 28? See https://gcc.gnu.org/wiki/InstallingGCC To avoid messing up the system compiler install it to a different path, e.g. under your home directory.