Since Upgrade of Firefox to the new beta release (3.0beta1, ebuild of layman mozilla), when the script configure is executed, it stops at GTK detection. And Same error for Yelp !
Totally unsupported.
(In reply to comment #1) > Totally unsupported. > This failure to compile is not necessarily associated with firefox-3.0beta1 or the layman overlay for mozilla-experimental. I have opened Bug #200898 because it is not possible to re-open this bug.