FreeBSD is pretty much neutral on the GPL, but BSD licensed software is sort of their "thing", so it's natural they'd prefer a BSD licensed compiler.
NetBSD used to be pretty hostile until control was wrested from wasabi systems which disliked the GPL because it prevented them from closing down GPL software.
Dragonfly never really took a position, so it's safe to assume they're neutral too.
That leaves only the OpenBSD guys, of whom (some of) the vocal part thinks anything not OpenBSD is a joke.
I think that's a bit more of a qualifier than "The BSD guys", most of which don't particularly care about phasing out GNU (even though that happens when accumulating BSD licensed software in their OS), some of which are sympathetic but simply like BSD systems more, and what seems to be a fringe minority which is actually hostile for one reason or another.
FreeBSD is pretty much neutral on the GPL, but BSD licensed software is sort of their "thing", so it's natural they'd prefer a BSD licensed compiler.
NetBSD used to be pretty hostile until control was wrested from wasabi systems which disliked the GPL because it prevented them from closing down GPL software.
Dragonfly never really took a position, so it's safe to assume they're neutral too.
That leaves only the OpenBSD guys, of whom (some of) the vocal part thinks anything not OpenBSD is a joke.
I think that's a bit more of a qualifier than "The BSD guys", most of which don't particularly care about phasing out GNU (even though that happens when accumulating BSD licensed software in their OS), some of which are sympathetic but simply like BSD systems more, and what seems to be a fringe minority which is actually hostile for one reason or another.