New comment by yopito on void-packages repository

https://github.com/void-linux/void-packages/pull/18873#issuecomment-595428639

Comment:
I have a WIP that is crossbuilding with these:
```
build_style=cmake
configure_args="-DPYTHON_EXECUTABLE=/usr/bin/python3"
hostmakedepends="python3-devel python3-pytest"
makedepends="python3-devel boost-devel"
```