For the OCaml packages on ppc64/ppc64le, we keep having bugs like this one: https://bugzilla.redhat.com/show_bug.cgi?id=1204876 The OCaml compiler is quite recursive, and so it can easily overflow the default stack. For reasons that are not entirely clear this happens only on ppc64/ppc64le (not on x86 or aarch64). Perhaps POWER stack frames are bigger, or the default stack size is smaller. One way to "fix" this would be to modify every single ocaml-* spec file to add: %ifarch %{power64} ulimit -s 65536 %endif However that doesn't fix the problem for people running ocamlopt on their own programs. The issue was discussed upstream, but upstream don't want to make the compiler stages less mutually recursive since (a) it makes the code far more complex and (b) stack memory is just a special use-case for ordinary memory so why should they? Could we increase the default stack size on ppc64? Or are there other alternatives? (I thought briefly about carrying a downstream compiler patch which does the equivalent of 'ulimit -s 65536' inside the compiler). Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 100 libraries supported. http://fedoraproject.org/wiki/MinGW -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct