New comment by Chocimier on void-packages repository

https://github.com/void-linux/void-packages/pull/15310#issuecomment-601832361

Comment:
@pullmoll: build_style is regular variable that can be set under `if $cross_build`, no problem here. It is utilized in cmake template.

@xtraeme: Please note that when package do not cross compile, anything depending can't be updated or rebuild for cross-build archs too.