> On 15 Nov 2022, at 13:30, Zack Weinberg <zack@xxxxxxxxxxxx> wrote: > > On Tue, Nov 15, 2022, at 12:03 AM, Sam James wrote: >>> On 13 Nov 2022, at 00:43, Paul Eggert <eggert@xxxxxxxxxxx> wrote: >>> >>> Although there will be problems with people who run "./configure CFLAGS='-Werror'", that sort of usage has always been problematic and unsupported by Autoconf, so we can simply continue to tell people "don't do that". >>> >> >> Is there somewhere in the autoconf docs we actually say this? >> >> I've seen a few instances of folks adding it themselves very >> early in their configure scripts (which is a pain for distros >> anyway) which then ends up affecting the rest. > > It's mentioned in the NEWS entry for 2.70: https://git.savannah.gnu.org/cgit/autoconf.git/tree/NEWS#n170 Thanks, sorry, I didn't think to check NEWS. This is good enough for me to link folks to, anyway, for the time being. > Note that there have been bug reports for cases where running builds with more warnings than configure uses (and I think also -Werror), means that configure checks spuriously succeed (i.e. configure reports that something is available, but then you get compiler errors on the code that tries to use it). I can't remember any concrete examples right now, though. I can totally imagine that, don't stress about the examples.
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