Installing GCC on macOS Catalina

I am on macOS Catalina and trying to install GCC by following the instructions here: https://solarianprogrammer.com/2019/10/12/compiling-gcc-macos/ Everything seems to work fine until I try to configure. Then I get the following:

configure: error: cannot run C compiled programs. If you meant to cross compile, use `--host'. See `config.log' for more details 

While trying to fix this I found the following: MacOS "configure: error: cannot run C compiled programs" However this answer requires going to the following directory:

/Library/Developer/CommandLineTools 

The problem is I do not have CommandLineTools in /Library/Developer/ not even as a hidden file. Trying to fix this I found this How to compile GCC on macOS Catalina? but there is now answer here and I do not have nix and don't want to mess with it as it appears to not be very compatible with macOS Catalina. So the question is how can I run the configure?