Build on Linux using gcc instead of clang

[kersson]

First of all, wow, what an amazing project!

Your Project Status planned features include:

Support for configuring which toolchain/version to use

I'm looking to embed your interpreter into my project on Linux compiled using gcc not clang. Specifically, I'm looking to statically link against libpython3.9.a. While full support for this may be on the TODO list, I'm wondering if there's a quick-and-dirty way to get this to work today.

Any help you can provide would be very much appreciated. Even just some pointers of where to start looking would be great. I'm thinking it's going to involve something like changing the host_cc, host_cxx, and target_cc for x86_64-unknown-linux-gnu in targets.yml.