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

https://github.com/q66/void-packages arm-none-eabi
https://github.com/void-linux/void-packages/pull/17827

[wip] cross-arm-none-eabi*: update to 9.2, rework to include libgcc.a and libstdc++
For `cross-arm-none-eabi-gcc`:

I've reworked this to make it possible to include `libgcc.a`, rather than just the compiler itself. However, as `libstdc++` requires `newlib` to be built and present (which requires the gcc to build), skip building `libstdc++` at this stage. Instead, move it into a separate package.

I figured out the necessary changes mostly by reading the Arch pkgbuild.

For `cross-arm-none-eabi-libstdc++`:

As the gcc cannot include libstdc++ because of its newlib requirement, build it as a separate package. This is achieved by taking the gcc source tree, installing our previously built gcc as well as newlib (which was already packaged) and building libstdc++ on its own. I've successfully compiled things with this.

Currently doing one more rebuild and test of everything.

@sirikid 

A patch file from https://github.com/void-linux/void-packages/pull/17827.patch is attached