* Richard W. M. Jones: > On Tue, Oct 25, 2022 at 10:05:52AM -0400, Ben Cotton wrote: >> Neither change is trivial to implement because introducing errors for >> these constructs (as required by C99) alters the result of autoconf >> configure checks. Quite a few such checks use an implicitly declared >> `exit` function, for instance. These failures are not really related >> to the feature under test. If the build system is well written, the >> build still succeeds, the relevant features are automatically disabled >> in the test suite and removed from reference ABI lists, and it's not >> immediately apparent that feature is gone. Therefore, some care is >> needed that no such alterations happen, and packages need to be ported >> to C99. Various tools for this porting activity are being developed to >> support this proposal. Cross-distribution collaboration will help as >> well, sharing patches and insights. > > Would it help if we made autoreconf (and the equivalent step for other > build systems) mandatory? Debian has declared this as "good practice" > since forever[0]. > > It would mean we could fix any problems in current autoconf > concurrently with the changes to GCC and Fedora.
I'm not aware of any recent-ish core autoconf issues that would be solved by running autoreconf (if that actually worked …). As far as I can tell, autoconf never relied on implicit function declarations for AC_CHECK_FUNC, not since 1993. The sed hack we already have is for LTO compatibility. We would have to sync aclocal.m4 (or what feeds into aclocal.m4) from autoconf-archive and then run autoreconf, but I don't think that we have any automation for that today. And not everything comes from autoconf-archive, a lot of stuff is just copied around manually. Most of it is unproblematic in this context, fortunately. The few remaining issues we have need to be patched individually. Thanks, Florian _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org 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@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
