There is a new pull request by Johnnynator against master on the void-packages repository

https://github.com/Johnnynator/void-packages pkg-config
https://github.com/void-linux/void-packages/pull/21728

xbps-src: some changes to pkg-config wrapper
None

A patch file from https://github.com/void-linux/void-packages/pull/21728.patch is attached