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 246842 [details]
+*fireflies-2.07-r1 (11 Sep 2010)
+ 11 Sep 2010; Kacper Kowalik <email@example.com>
+ +fireflies-2.07-r1.ebuild, +files/fireflies-2.07-build_system.patch:
+ Respect CXXFLAGS, LDFLAGS wrt bug 336814. Thanks to Diego for the report.
+ Fix parallel build, configure recursively.