On Thu, Apr 08, 2021 at 08:37:25AM -0700, Gianfranco Costamagna wrote: I couldn't follow that link, but if GCC is crashing in lto1 then it would probably be caused by LTO, so disabling it is the only way to proceed. We have also disabled LTO in Fedora builds of libguestfs, because there's a bug in handling mixed C/OCaml files, see: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.o... Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top