On 12/30/20 3:48 PM, Ian McInerney wrote: > > > On Wed, Dec 30, 2020 at 7:54 PM Ben Cotton <bcotton@xxxxxxxxxx > <mailto:bcotton@xxxxxxxxxx>> wrote: > > https://fedoraproject.org/wiki/Changes/LTOBuildImprovements > <https://fedoraproject.org/wiki/Changes/LTOBuildImprovements> > > > == Summary == > Currently all packages that are not opted out of LTO include > -ffat-lto-objects in their build flags. This proposal would remove > -ffat-lto-objects from the default LTO flags and only use it for > packages that actually need it. > > == Owner == > * Name: [[User:law | Jeff Law]] > * Email: law@xxxxxxxxxx <mailto:law@xxxxxxxxxx> > > > == Detailed Description == > -ffat-lto-objects was added to the default LTO flags to ensure that > any installed .o/.a files included actual compiled code rather than > just LTO bytecodes (which are stripped after the install phase). > However, that is wasteful from a compile-time standpoint as few > packages actually install any .o/.a files. > > This proposal would remove -ffat-lto-objects from the default LTO > flags and packages that actually need the option would have to opt-in > via an RPM macro in their .spec file. This should significantly > improve build times for most packages in Fedora. > > > Does this mean that packages that are explicitly shipping a static > library to the end user need to enable this macro to allow the > installed static library to be usable by an end-user's compiler? If > this is the case, then the packaging guidelines should be updated to > reflect this. Yes and the change request reflects that an update to the packaging guidelines is necessary. Jeff _______________________________________________ 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
