To install the old version of the compiler, do I need to uninstall the previous one?

Question

C++ / C#

I currently have GCC 10.3.0, but Clion 2019 says it supports GCC from 7.xx to 8.xx Do I need to install the old compiler collection and if so, remove the current version or not? or it will do.
Thanks in advance and sorry for the dumb question.

Answer 1

You don't need to delete the new version. If you're on linux, just use update-alternatives.
PS About Clion the question is not clear. You have a Cmake build system, everything should work with new versions of the compiler. The only thing that can be - Clion will incorrectly highlight the working code, since you are using new builtins, for example.