http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48445
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-04-05 03:48:39 UTC --- Oh and using a relative path to configure is not fully supported either even though it has worked a lot more reliable than building in the source directory. Try doing: `pwd`/../gcc-svn/configure