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

https://github.com/sgn/void-packages slade-gcc10-libraries
https://github.com/void-linux/void-packages/pull/28133

SLADE: fix build with gcc-10, link with system libraries
@Johnnynator I have no idea about this package, so the patch maybe plainly wrong :)

A patch file from https://github.com/void-linux/void-packages/pull/28133.patch is attached