There's a merged pull request on the void-packages repository

llvm8: add a secureplt patch and fix build with gcc9 on/for ppc32
https://github.com/void-linux/void-packages/pull/12838
Description: This adds a secureplt patch (from Adélie) as we're building everything with secureplt with gcc already (musl requires it, we do it for glibc also). Also, it seems `-O2` or `-O3` for 32-bit `ppc` is no good as it's ends up being too big and fails to link. So work around that issue also. And bump because this affects cross-compiling from other hosts (and it's probably a good idea to rebuild this with gcc9 anyway).