There is an updated pull request by q66 against master on the void-packages repository

https://github.com/q66/void-packages cross-style
https://github.com/void-linux/void-packages/pull/27412

[RFC WIP] crosstoolchain build-style
This introduces a build-style for system crosstoolchains. It only works, and will only work, for toolchains targeting Void and one of its standard libraries. The none targets and stuff like mingw are explicitly a non-goal, to reduce the amount of magic we have to do.

This has a bunch of advantages:

- crosstoolchain templates can now be small and simple
- crosstoolchains writen with this build-style will no longer mess up masterdirs like the existing ones do; you can safely build your stuff without `-t` and your `masterdir` will be pristine
- unification of options passed to `gcc`/libc/`binutils` configure, as much as possible
- reduced repeated boilerplate code between individual crosstoolchains
- `ccache` friendly
- easier upgrades, easier maintenance, etc

This is currently incomplete. These things are left to do:

- [x] Add musl support
- [x] Clean up the configure params, only keep the generic ones in the build-style, specific ones will go into individual crosstoolchains (this one is largely based on what the aarch64 one was doing)
- [x] 64-bit cross on 32-bit hosts is probably actually fine in general, we just need to enable it
- ~~Allow glibc crosstoolchains on musl~~ (this needs `glibc` 2.32 so it will be done later)

Toolchain rewrite TODO:

- [x] `cross-aarch64-linux-gnu`
- [x] `cross-aarch64-linux-musl`
- [x] `cross-arm-linux-gnueabi`
- [x] `cross-arm-linux-musleabi`
- [x] `cross-arm-linux-gnueabihf`
- [x] `cross-arm-linux-musleabihf`
- [x] `cross-armv7l-linux-gnueabihf`
- [x] `cross-armv7l-linux-musleabihf`
- [x] `cross-i686-pc-linux-gnu`
- [x] `cross-i686-linux-musl`
- [x] `cross-mips-linux-musl`
- [x] `cross-mips-linux-muslhf`
- [x] `cross-mipsel-linux-musl`
- [x] `cross-mipsel-linux-muslhf`
- [ ] `cross-powerpc-linux-gnu`
- [ ] `cross-powerpc-linux-musl`
- [ ] `cross-powerpcle-linux-gnu`
- [ ] `cross-powerpcle-linux-musl`
- [ ] `cross-powerpc64-linux-gnu`
- [ ] `cross-powerpc64-linux-musl`
- [ ] `cross-powerpc64le-linux-gnu`
- [ ] `cross-powerpc64le-linux-musl`
- [ ] `cross-x86_64-linux-gnu`
- [ ] `cross-x86_64-linux-musl`

For now, posting for input.

@Duncaen @leahneukirchen @pullmoll @ericonr @void-linux/pkg-committers 

[ci skip]

A patch file from https://github.com/void-linux/void-packages/pull/27412.patch is attached