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edcb0925a5
autoreconf runs a bunch of subsidiary tools, and is expected to pass along various command-line settings, such as those controlling warnings. It has historically done this via the command line. However, not all of the tools recognize the same set of command-line warnings options. There’s an existing check for whether aclocal and automake understand ‘--warnings’ at all, but it currently assumes that automake will accept the same set of warnings *categories* that autoconf does. This hasn’t actually been true for many years and is known to cause problems; see the discussion starting at <https://lists.gnu.org/archive/html/autoconf/2020-09/msg00000.html>. Previous patches in this series (and related patches applied to automake) have restored agreement between the current development trunks of the two sets of tools on the set of warnings categories, but we still need to deal with the possibility of the *installed* tools not being in agreement. If we use the WARNINGS environment variable to pass down warnings options, instead of the command line, then all the tools are already coded to ignore unknown warning categories, and this ceases to be an issue. And we no longer need the check for ‘--warnings’ support in automake, either. Also, autoreconf as well should suppress warnings from its first invocation of autoconf, which is for tracing purposes only and may emit spurious warnings because aclocal.m4 is not yet in place. * bin/autoreconf.in ($aclocal_supports_warnings, $automake_supports_warnings): Delete. (@warning): Make local to sub parse_args. (parse_args): Do not add --warnings options to $autoconf, $autoheader, $aclocal, or $automake. Instead, set $ENV{WARNINGS} appropriately. No longer necessary to probe for --warnings support from aclocal and automake. (autoreconf_current_directory): Set $ENV{WARNINGS} temporarily to “none” when running autoconf in trace mode. Fix typo in comment. Close $traces immediately after we’re done with it. * tests/torture.at (Specific warnings options for autoreconf): New test. |
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| .. | ||
| autoconf.as | ||
| autoheader.in | ||
| autom4te.in | ||
| autoreconf.in | ||
| autoscan.in | ||
| autoupdate.in | ||
| ifnames.in | ||
| local.mk | ||