On Fri, 2020-06-05 at 11:19 +0200, Jakub Jelinek wrote: > On Fri, Jun 05, 2020 at 09:52:09AM +0200, Kevin Kofler wrote: > > I do not see why we should allow yet another special case for Firefox, nor > > why we should let random packages make their own choice of compiler and risk > > running into hidden binary incompatibilities. We have a system compiler for > > a reason. > > I'll note that there are some even not really hidden binary > incompatibilities, where LLVM diverges from the psABI for years, it has been > reported and nothing has been changed. > So if a library is built with clang/LLVM and used by GCC built package or > vice versa, one might very well run into those (this is e.g. about passing > std::byte or other scoped enums with char/short underlying type by value, or > in some cases even about passing char/short arguments). > And of course unknown ABI bugs on both sides. So the new policy is only for non-library packages then? Packages which provide libraries that can be linked to by other packages still need to use the default system compiler to make sure there is no breakage. At least to the other packages. A package that is build with llvm might subtly break when linked against system libraries. Thanks, Mark _______________________________________________ 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
