https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112422
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> --- (In reply to Sam James from comment #3) > There's some stuff we could cache for sure but it wouldn't be the majority > of the checks - stuff like finding tools like awk, sed should work > regardless of which stage we're in and so on. gawk and sed were potential host modules at one point previously, too, but it looks like they've been removed, so yeah I guess it'd be safe for them now... anything that might fall in this category should get checked against Makefile.def to make sure there aren't already potential modules for them for people trying to combine trees or something...
