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 248109 [details] Build log
Fixed in tree. Thanks for reporting Diego. + 02 Oct 2010; Thomas Beierlein <tomjbe@gentoo.org> as11-1.0.ebuild: + Make package respecting LDFLAGS (bug #338143). Tested on amd64 and + keyworded.