https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113188
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |WONTFIX --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- The version of ISL that works with the version of GCC can be downloaded via contrib/download_prerequisites or you can use --without-isl configure option which will disable support to use ISL. Anyways GCC 6.5 is no longer supported so no patches are going to fix it. Also bugzilla is not correct location for getting support of building older versions of GCC which are no longer supported, the mailing list gcc-help@ is a better place for that.