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| author | Reiner Herrmann <reiner@reiner-h.de> | 2017-09-15 11:43:53 +0200 |
|---|---|---|
| committer | Mathieu Lirzin <mthl@gnu.org> | 2017-09-15 12:00:33 +0200 |
| commit | 7c25c996d1c7c212a5981aa0e9c4434b6f33f7b8 (patch) | |
| tree | b6d90ab8539de910daa2fd1dd3900c119ea4a1e9 | |
| parent | 333b98f2d108111e9a99e7ede17de7f0a1adba03 (diff) | |
| download | automake-7c25c996d1c7c212a5981aa0e9c4434b6f33f7b8.tar.gz | |
mdate-sh: Ensure reproducible time output
This change fixes automake bug#20314.
'mdate-sh' pretty-prints the modification time of a file. But it's
output can vary depending on the timezone of the caller. Someone in
timezone GMT-12 will get a different result (day) than someone in
timezone GMT+12. As this output is also used to create/update stamp
files, which influence the further build process, the build result can
vary.
* lib/mdate-sh: Set 'TZ' to UTC which ensures reproducible output.
* NEWS: Announce bug fix.
Copyright-paperwork-exempt: yes
| -rw-r--r-- | NEWS | 3 | ||||
| -rwxr-xr-x | lib/mdate-sh | 6 |
2 files changed, 8 insertions, 1 deletions
@@ -118,6 +118,9 @@ New in ?.?.?: build, the build sub-directory defined by AC_CONFIG_LIBOBJ_DIR is now properly created. (automake bug#27781) + - The time printed by 'mdate-sh' is now using the UTC time zone to support + the reproducible build effort. (automake bug#20314) + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ New in 1.15.1: diff --git a/lib/mdate-sh b/lib/mdate-sh index f80075c04..b6a116f92 100755 --- a/lib/mdate-sh +++ b/lib/mdate-sh @@ -1,7 +1,7 @@ #!/bin/sh # Get modification time of a file or directory and pretty-print it. -scriptversion=2016-01-11.22; # UTC +scriptversion=2017-09-15.09; # UTC # Copyright (C) 1995-2017 Free Software Foundation, Inc. # written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995 @@ -74,6 +74,10 @@ export LC_ALL LC_TIME=C export LC_TIME +# Use UTC to get reproducible result. +TZ=UTC +export TZ + # GNU ls changes its time format in response to the TIME_STYLE # variable. Since we cannot assume 'unset' works, revert this # variable to its documented default. |