Created attachment 275719 [details] tre-0.8.0-mingw32-build.log See attached build log and an ugly patch which fixes the problem for me. The problem is simply a matter of the package trying to rename an executable, which for the mingw32 target has `.exe' appended to it.
Created attachment 275721 [details, diff] tre-0.8.0.ebuild-mingw32.patch
+ 13 Jun 2011; Justin Lecher <jlec@gentoo.org> tre-0.8.0.ebuild: + Fix compilation on CHOST=mingw32, #369947; thanks Nathan Phillip Brink for + the patch +