New review comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/32980#discussion_r711745691

Comment:
Just set `LDFLAGS=-latomic` in the template, but it might not be enough. Since it's cmake, check out how uhd does it:

```
	makedepends+=" libatomic-devel"
	configure_args+=" -DCMAKE_CXX_STANDARD_LIBRARIES=-latomic"
```