https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93277
Peter Bergner <bergner at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #5 from Peter Bergner <bergner at gcc dot gnu.org> --- So with some help from Joseph, this ended up being luser error on my part! The problem was libtool uses grep to extract some version strings from some files in the gcc source tree. That's all fine and dandy, but I had grep setup to use --exclude=*.svn* --exclude=*.git*, so any path with either .svn or .git anywhere in the path name would cause grep to not find the version string. Clearly, that regex expression is way too greedy!