On Fri, Apr 23, 2021 at 11:18:59AM -0400, Ben Cotton wrote: > The Red Hat tools team believes that LLVM/Clang and GCC should be > considered equals from > a Fedora policy standpoint. Selection of one toolchain over the other should be > driven by the packager's preferences not by Fedora specific policy. > The only policy restriction should be that the compiler must exist in > Fedora. I'll be probably repeating myself, but the two compilers are known to be ABI incompatible in very important ways, none of the https://bugs.llvm.org/buglist.cgi?quicksearch=42439%2C19909%2C44228%2C12207 bugs have been touched since last time this was discussed and I'm not aware of any ABI compatibility testing between the two compilers. So if some library packages switch compilers and programs using those libraries don't or vice versa, this proposal has quite high risks of introducing hard to debug debugs. I agree that for open source software and generally for users it is useful if there are multiple competing implementations, in this case for the toolchain, and the competition has been IMHO quite fruitful for both GCC and LLVM over the past years. It is also very useful if open source packages are made portable or kept portable, so that one can use multiple compilers to compile them, one can benefit from different diagnostics, instrumentation etc. But I'm not sure this proposal is a step in the right direction though, e.g. in the Firefox case that is being used as an example for this proposal that leads in a completely different direction, a package that has been formerly portable and supported multiple compilers will turn into a single compiler only application and will lose its portability. Google, Apple, BSDs don't really care about toolchain choice and they push a single toolchain only. Jakub _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
