means Autoconf no longer supports pre-1989 C compilers, as they do
not support function prototypes.
-*** Autoconf now requires perl 5.10 (2007) or later.
- Generated 'configure' scripts continue to run without perl.
+*** Autoconf developers now need Perl 5.10 (2007) or later.
+ Generated 'configure' scripts continue to run without Perl.
+
+ Although Autoconf users still need only Perl 5.6 (2000) or later,
+ Perl 5.10 or later is recommended for users too, as it avoids some
+ trouble with files that have timestamps separated by less than 1 s.
+ Due to limitations in Perl's API this trouble is not entirely fixed
+ even with Perl 5.36, which cannot represent timestamps separated by
+ 238 ns or less, for circa 2023 timestamps on typical platforms.
*** Autoconf now requires GNU M4 1.4.8 (2006) or later.
Generated 'configure' scripts continue to run without M4.
+++ /dev/null
-# perl-time-hires.m4 serial 1
-
-# Copyright (C) 2022-2023 Free Software Foundation, Inc.
-
-# Copying and distribution of this file, with or without modification,
-# are permitted in any medium without royalty provided the copyright
-# notice and this notice are preserved. This file is offered as-is,
-# without warranty of any kind.
-
-# AClocal_PATH_PROG_GLOBS_FEATURE_CHECK
-# ---------------------------------
-# Like AC_PATH_PROGS_FEATURE_CHECK, but each of 'progs-to-check-for' may
-# be a shell glob, which is expanded once for each path entry.
-# That is, AClocal_PATH_PROG_GLOBS_FEATURE_CHECK([PERL], [perl-*]) will
-# test each program named something like 'perl-*' found anywhere on the
-# path. Due to the syntax conflict with Autoconf string quoting,
-# character sets (e.g. perl-[56]*) are not supported.
-m4_define([AClocal_PATH_PROG_GLOBS_FEATURE_CHECK],
-[if test -z "$$1"; then
- ac_path_$1_found=false
- # Loop through the user's path and test for each of PROGNAME-LIST
- dnl AS_ESCAPE has been excessively optimized and does not work for anything
- dnl other than constructing strings. I have not been able to figure out how
- dnl to get [ and ] through this process without mangling them, so
- dnl character sets are not supported for now.
- _AS_PATH_WALK([$5],
- [for ac_prog in m4_bpatsubst([$2], [[!?*]], [\\\&])
- do
- for ac_exec_ext in '' $ac_executable_extensions; do
- ac_pathglob_$1="$as_dir$ac_prog$ac_exec_ext"
- for ac_path_$1 in $ac_pathglob_$1; do
- AS_EXECUTABLE_P(["$ac_path_$1"]) || continue
-$3
- $ac_path_$1_found && break 4
- done
- done
- done])dnl
- if test -z "$ac_cv_path_$1"; then
- m4_default([$4],
- [AC_MSG_ERROR([no acceptable m4_bpatsubst([$2], [ .*]) could be dnl
-found in m4_default([$5], [\$PATH])])])
- fi
-else
- ac_cv_path_$1=$$1
-fi
-])
-
-# AC_PATH_PERL_WITH_TIME_HIRES_STAT
-# ---------------------------------
-# Check for a version of perl that supports Time::HiRes::stat.
-# This was added to perl core in 5.10 and it's convenient to
-# have a consistent 'use 5.0xx' baseline for all the perl scripts,
-# so that is the version we require, even though technically we
-# could be getting away with 5.8 or even 5.6 in many of the scripts.
-# (Note: Files shared with Automake do not necessarily use our baseline.)
-AC_DEFUN([AC_PATH_PERL_WITH_TIME_HIRES_STAT],
- [AC_ARG_VAR([PERL], [Location of Perl 5.10 or later. Defaults to
- the first program named 'perl', 'perl5*', or 'perl-5.*' on the PATH
- that meets Autoconf's needs.])
- AC_CACHE_CHECK([for Perl >=5.10.0 with Time::HiRes::stat],
- [ac_cv_path_PERL],
- [AClocal_PATH_PROG_GLOBS_FEATURE_CHECK(
- [PERL], [perl perl5* perl-5.*],
- [AS_ECHO("$as_me:${as_lineno-$LINENO}: trying $ac_path_PERL") \
- >&AS_MESSAGE_LOG_FD
- $ac_path_PERL >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD -e '
- use 5.010;
- use Time::HiRes qw(stat);
- 1;' \
- && ac_cv_path_PERL=$ac_path_PERL ac_path_PERL_found=:],
- [AC_MSG_ERROR([no acceptable perl could be found in \$PATH.
-Perl 5.10.0 or later is required, with Time::HiRes::stat.])])])
- PERL=$ac_cv_path_PERL
-])
projects / thirdparty / autoconf.git / commitdiff
