http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57651
--- Comment #1 from Matthias Klose <doko at gcc dot gnu.org> --- now, working around the permission bit, I get: $ gcc-ar-4.8 gcc-ar-4.8: Cannot find binary 'ar' so it only searches ar in the given paths, not on the path of the file system (/usr/bin in this case)