Check the attached build log, a detailed description of the problem can be found on the blog post in URL.
Created attachment 167350 [details] Build log
+ 20 Jun 2012; Justin Lecher <jlec@gentoo.org> regex-markup-0.10.0.ebuild, + +files/regex-markup-0.10.0-locale.patch: + Fix missing declerations, #240044; bump EAPI=4; add missing configure options +