cosmonim VS gcc

In a word, yes.

In more words: You should be able to use Cosmopolitan libc: https://github.com/Yardanico/cosmonim

If something does not work for you, Yardanico is super duper helpful in all things Nim.

Nim also compiles to Javascript (nim js) and C++ for integration with legacy codebases, but that is probably more to the side of your interests.

I haven't used Nim much, but I remember a repo on Github had setup a build script for compiling Nim with Cosmopolitan Libc. https://github.com/Yardanico/cosmonim

This gcc patch makes such build scripts simpler, because you will need to change less of your code -- let me know how it works!

Dereferencing the runtime symbol with a function sounds interesting! If you can show me an example of where it works, I'd be happy to try it out. I like the if-else-goto arrangement because it fit in perfectly with the other parts of gcc -- if you look at my patch[1], you will find that I had to change very little of gcc's existing code to add this capability.

[1]: https://github.com/ahgamut/gcc/tree/portcosmo-11.2