See attached build log.
(Please do not complain about the need for looking at the build log until you can provide an easy way to open bugs with the correct data picked out of a tinderbox log. Thanks.)
Created attachment 248114 [details]
# Rémi Cardona <email@example.com> (21 Sep 2010)
# transset was never meant to be a proper tool, is dead upstream, has a
# maintained fork (x11-misc/transset-df) and doesn't respect LDFLAGS
# (see bug #338150). Masked for removal in 30 days.
Closing then :)
PS, upstream Xorg has a proper autotooled version but it was never publicly posted. If someone *really* wants the original transset, I'll ask for it and I'll add it back.