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 243943 [details]
Fixed. Thanks. for reporting.
+ 27 Aug 2010; Thomas Beierlein <firstname.lastname@example.org>
+ +files/4.0-ldflags.patch, balsa-4.0.ebuild:
+ Respect LDFLAGS wrt bug #333855. Thanks for reporting Diego.