mirror/autoconf
2
0
Fork 0
mirror of git://git.sv.gnu.org/autoconf synced 2025-01-18 10:45:15 +08:00
Code Issues Packages Projects Releases Wiki Activity

(autoreconf): Don't age aclocal.m4's input

Browse Source 
files to be 1 second older; just set them to be the same time.
Also, sleep 1 second after the first aclocal, to work around
problems with sub-second time stamps on the input files.
This commit is contained in:
Paul Eggert 2002-04-30 06:33:12 +00:00
parent d658e7f3be
commit eafcef5a74
1 changed files with 19 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
bin/autoreconf.in
View File

@ -288,6 +288,16 @@ sub autoreconf ($)
}
else
{
# Some filesystems have sub-second time stamps, and if so we may
# run into trouble later, after we rerun autoconf and set the
# time stamps of input files to be no greater than aclocal.m4,
# because the time-stamp-setting operation (utime) has a
# resolution of only 1 second. Work around the problem by
# ensuring that there is at least a one-second window before the
# time stamp of aclocal.m4t in which no file time stamps can
# fall.
sleep 1;
xsystem ("$aclocal $aclocal_flags --output=aclocal.m4t");
# aclocal may produce no output.
update_file ('aclocal.m4t', 'aclocal.m4')
@ -449,7 +459,7 @@ sub autoreconf ($)
# aclocal.m4.
#
# Why is not always the case? Because we already run
# aclocal a first (before tracing), which, for instance,
# aclocal at first (before tracing), which, for instance,
# can find Gettext's macros in .../share/aclocal, so we
# may have had the right aclocal.m4 already. Then
# gettextize is run, and installs locally these M4
@ -457,11 +467,11 @@ sub autoreconf ($)
# the _same_ aclocal.m4, and doesn't change its
# timestamp. But later, Automake's Makefile expresses
# that aclocal.m4 depends on these local files, which
# are younger, so it triggers aclocal again.
# are newer, so it triggers aclocal again.
#
# To make sure aclocal.m4 is younger, we change the
# To make sure aclocal.m4 is no older, we change the
# modification times of the local M4 files to be
# slightly older than it.
# not newer than it.
#
# First, where are the local files?
my $aclocal_local_dir = '.';
@ -469,16 +479,15 @@ sub autoreconf ($)
{
$aclocal_local_dir = $1;
}
# All the local files younger than aclocal.m4 are to be
# grown older than it.
# All the local files newer than aclocal.m4 are to be
# made not newer than it.
my $aclocal_m4_mtime = mtime ('aclocal.m4');
for my $file (glob ("$aclocal_local_dir/*.m4"), 'acinclude.m4')
{
if (mtime ($file) >= $aclocal_m4_mtime)
if ($aclocal_m4_mtime < mtime ($file))
{
debug "making $file younger than aclocal.m4";
utime $aclocal_m4_mtime - 1, $aclocal_m4_mtime - 1,
$file;
debug "aging $file to be not newer than aclocal.m4";
utime $aclocal_m4_mtime, $aclocal_m4_mtime, $file;
}
}
}