New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/28965#issuecomment-783219549

Comment:
For cross you need to pass `--sysroot` and `--target` to clang. You will find the values of those flags in the `python3-pyside2` template.

For i686, it's apparently missing some flag to allow the usage of whatever SIMD it wants.