On Wed, 15 Jan 2025 at 20:47, Florian Weimer <fwei...@redhat.com> wrote:
> * Iñaki Ucar: > > > On Wed, 15 Jan 2025 at 19:40, Florian Weimer <fwei...@redhat.com> wrote: > > > >> * Iñaki Ucar: > >> > >>>> Add -std=gnu17 to CFLAGS of whatever packages you want to use it as > >>>> workaround (but don't forget to look at it back before Fedora 42 is > >>>> released). > >>> > >>> I was actually planning to keep it until the next R release, which is > >>> in April. Would that be a problem? > >> > >> Would this flag also be used for building R extensions by default? > > > > Yes, extensions use the same flags as R unless otherwise requested by > > the extension. > > Will the April release land in Fedora 42? > > If you use -std=gnu17 for now, then it might obscure problems in > extensions. If you can't backport the C23 compatibility fixes and can't > do the extra compatibility work for extensions, maybe it's necessary to > stick with -std=gnu17 for Fedora 42 and switch it off for Fedora 43 > only. > > (Worst case, C23 source code compatibility could be an ABI-incompatible > change, but it's unlikely because the extension API must already be > source-compatible with C++.) > Upstream just provided a simple patch to solve this for now, so defining the standard won't be necessary. Fixed in rawhide now. -- Iñaki Úcar
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