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

https://github.com/tibequadorian/void-packages kokkinizita
https://github.com/void-linux/void-packages/pull/28809

Kokkinizita [WIP]
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#### General
- [ ] This is a new package and it conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements)

#### Have the results of the proposed changes been tested?
- [ ] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- [ ] I generally don't use the affected packages but briefly tested this PR

Setting CXXFLAGS in Makefile doesn't seem to work anymore since [void-packages#2325ae1](https://github.com/void-linux/void-packages/commit/2325ae153bd6011682782a6712f87338a9747ac7) so we need to set them in the template.
I've adapted them to those in the Makefile (e.g. `-ffast-math`) and enabled `-march=native` for non-cross builds.

I'll have to test this though.

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A patch file from https://github.com/void-linux/void-packages/pull/28809.patch is attached