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6547. By Zack Weinberg on 2020-02-26

Fix `make syntax-check'.

There are two errors caught by make syntax-check currently.

First, the recent make update-copyright
(d78a7dd95fed24e417dfb4d08124a9ce7c1f7d1e) missed autoconf.texi, I
think because there are a bunch of .texi files in doc/ whose copyright
years should *not* be updated (e.g. standards.texi, fdl.texi) and the
exclusion pattern is too broad. I can't actually *find* the exclusion
pattern in the twisty maze of .mk files, all alike, so I just manually
updated autoconf.texi.

Second, it objects to an edit to an old section of NEWS. This is
because of d3dcd5895d64f6c86275c9333e2760a867e540e7, which is a
legitimate change (replacing http:// with https:// in a URL) so the
correct action is to change old_NEWS_hash to match.

 * doc/autoconf.texi: Update copyright year.
 * cfg.mk (old_NEWS_hash): Update to acknowledge commit
 d3dcd5895d64f6c86275c9333e2760a867e540e7.

6546. By Paul Eggert on 2020-02-22

Mention 32-bit GNU/Linux 64-bit inodes

* lib/autoconf/specific.m4 (AC_SYS_LARGEFILE):
In a comment, mention 64-bit inode problem on 32-bit GNU/Linux.
This is taken from Gnulib.

6545. By Paul Eggert on 2020-02-22

Remove definition of _DARWIN_USE_64_BIT_INODE

It’s not needed in currently-supported macOS versions, and was
problematic anyway in MacOS X 10.5 which was the only version that
could use it. Problem reported by Peter Eisentraut in:
https://lists.gnu.org/r/bug-autoconf/2020-02/msg00004.html
* lib/autoconf/specific.m4 (AC_SYS_LARGEFILE):
Don’t define _DARWIN_USE_64_BIT_INODE.

6544. By Jim Meyering <email address hidden> on 2020-01-01

maint: make update-copyright

6543. By Paul Eggert on 2019-12-25

Document AIX 7.2 printf command gotcha

* doc/autoconf.texi (Limitations of Builtins):
Document AIX 7.2 sh printf problem with octal escapes.

6542. By Paul Eggert on 2019-10-06

Fix terminology typo in mkdir -p check

* lib/autoconf/programs.m4 (AC_PROG_MKDIR_P): Say “race-free”, not
“thread-safe”. Problem reported by Reuben Thomas in:
https://lists.gnu.org/r/bug-autoconf/2019-09/msg00003.html

6541. By Ondrej Dubaj on 2019-09-10

Port tests to Bash 5

* tests/local.at (AT_CHECK_ENV, AT_CONFIG_CMP):
Add BASH_ARGC, BASH_ARGV to list of variables to be ignored when
comparing variable space dumps.
(AT_CONFIG_CMP): Also ignore LINENO.
* tests/m4sh.at: Also unset LINENO in 'reference' and 'test/test-1'.

6540. By Paul Eggert on 2019-05-29

Port AC_C_BIGENDIAN to recent clang

Problem and trivial patch reported by Matthieu Gautier in:
https://lists.gnu.org/r/bug-autoconf/2019-05/msg00006.html
* lib/autoconf/c.m4 (AC_C_BIGENDIAN): Use unsigned short for
values greater than 2**15 - 1.

6539. By Jim Meyering <email address hidden> on 2018-12-15

doc/autoconf.texi: fix spelling/grammar nits

6538. By Noah Misch <email address hidden> on 2018-11-25

AC_CHECK_DECL: when cached, don't overwrite a werror flag

* lib/autoconf/general.m4 (_AC_CHECK_DECL_BODY): Restore werror flags
inside the AC_CACHE_CHECK that saves them. Commit
82ef7805faffa151e724aa76c245ec590d174580 broke this. From Tom Lane
(trivial change).
* tests/semantics.at (AC_CHECK_DECLS): Test this.