New comment by pullmoll on void-packages repository

https://github.com/void-linux/void-packages/issues/20878#issuecomment-612519042

Comment:
Hmm... I think it's just that instead of `:=build` there should be something like `:=$PWD/build` which would then create the `build` directory below the possible `$build_wrksrc`sub-directory inside `$wrksrc`, or simply below `$wrksrc`. Anyway, this should be fixed in a way that doesn't complicate things :)