tjh.dev
1From 2e3357d7f0d63f1caeb40d9644c2436a5cd0da5f Mon Sep 17 00:00:00 2001
2From: David Terry <me@xwvvvvwx.com>
3Date: Fri, 18 Oct 2019 10:23:11 +0200
4Subject: [PATCH] help2man: add support for SOURCE_DATE_EPOCH
5
6---
7 doc/help2man | 14 +++++++++++++-
8 1 file changed, 13 insertions(+), 1 deletion(-)
9
10diff --git a/doc/help2man b/doc/help2man
11index af4306f..4a64167 100755
12--- a/doc/help2man
13+++ b/doc/help2man
14@@ -213,11 +213,23 @@ sub get_option_value;
15 my $help_text = get_option_value $ARGV[0], $help_option;
16 $version_text ||= get_option_value $ARGV[0], $version_option;
17
18+# By default the generated manual pages will include the current date. This may
19+# however be overriden by setting the environment variable $SOURCE_DATE_EPOCH
20+# to an integer value of the seconds since the UNIX epoch. This is primarily
21+# intended to support reproducible builds (wiki.debian.org/ReproducibleBuilds)
22+# and will additionally ensure that the output date string is UTC.
23+my $epoch_secs = time;
24+if (exists $ENV{SOURCE_DATE_EPOCH} and $ENV{SOURCE_DATE_EPOCH} =~ /^(\d+)$/)
25+{
26+ $epoch_secs = $1;
27+ $ENV{TZ} = 'UTC';
28+}
29+
30 # Translators: the following message is a strftime(3) format string, which in
31 # the English version expands to the month as a word and the full year. It
32 # is used on the footer of the generated manual pages. If in doubt, you may
33 # just use %x as the value (which should be the full locale-specific date).
34-my $date = enc strftime _("%B %Y"), localtime;
35+my $date = enc strftime _("%B %Y"), localtime $epoch_secs;
36 (my $program = $ARGV[0]) =~ s!.*/!!;
37 my $package = $program;
38 my $version;
39--
402.23.0
41