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 246351 [details]
+*bwa-0.5.0-r1 (07 Sep 2010)
+ 07 Sep 2010; Kacper Kowalik <email@example.com> -bwa-0.4.6.ebuild,
+ Respect LDFLAGS wrt bug 336348. Thanks to Diego for the report. Add proper
+ pthread support, drop empty DEPENDs. Drop old.