Translations:Upgrading GCC/8/zh-cn
From Gentoo Wiki
root #
gcc-config --list-profiles
[1] x86_64-pc-linux-gnu-5.4.0 * [2] x86_64-pc-linux-gnu-6.4.0
root #
gcc-config --list-profiles
[1] x86_64-pc-linux-gnu-5.4.0 * [2] x86_64-pc-linux-gnu-6.4.0