How to Install Devtoolset-8 on Linux | How to upgrade g++ in Linux
Upgrade g++ version 4.8.5 to 8.3.1
steps –
Install Commands:
# 1. Install a package with repository for your system:
# On CentOS, install package centos-release-scl available in CentOS repository:
$ sudo yum install centos-release-scl
# On RHEL, enable RHSCL repository for you system:
$ sudo yum-config-manager –enable rhel-server-rhscl-7-rpms
# 2. Install the collection:
$ sudo yum install devtoolset-8
Run command (cmd session specific – should be used to temporarily upgrade to gcc upgrade):
# 3. Start using software collections:
$ scl enable devtoolset-8 bash
Run Command (global setting – should be used to use upgraded gcc all the time – point installed gcc to upgrade gcc with a symlink – if you don’t need old gcc for other builds):
FYI, we use this setting for permanently use upgraded gcc for all crypto builds.
#Rename old g++
$ sudo mv /usr/bin/g++ /usr/bin/g++.old
# sudo ln -s “intended g++” “old installed g++”
$ sudo ln -s /opt/rh/devtoolset-8/root/usr/bin/g++ /usr/bin/g++
centos 7
