Created attachment 312377 [details] build.log (dev-util/pkgconfig was not installed) bif_file.c:6170:19: fatal error: unzip.h: No such file or directory compilation terminated. Builds fine after isntalling pkconfig.
Thanks for reporting, fixed in CVS. + 20 May 2012; Johannes Huber <johu@gentoo.org> virtuoso-server-6.1.4-r1.ebuild: + Add missing DEPEND on virtual/pkgconfig by Nikoli <nikoli@lavabit.com> wrt bug + #416761.