Provide options to control compiler/compilation option locally

[jfalcou]

I have a bunch of c++20 only libraries that I need to compile with g++-11 or lcang++-12 at minimum.
Is editing the generate_jobs.py script the only way?

Could be cool if such info could be passed as a .json config file or if the project json can contain filters for compiler/standard to test.

[Philip-Trettner]

there is already a "min-cpp" key supported for projects, so it wouldn't be too hard to also add "min-gcc" and "min-clang". (around line 632 of generate_jobs.py). I'll see if I get to it this week, otherwise feel free to open a PR.

[jfalcou]

Oh, I didn't see it. I'll try to get a PR running tomorrow or Friday