From 4187fe750f128f934bd6030912133d13d19baafd Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Sun, 13 Dec 2015 11:25:24 +0100
Subject: gnu: perl: Build deterministically, and make byproducts
deterministic.
With this, a --rounds=2 build passes, and timestamps in POD files can be
controlled with 'SOURCE_DATE_EPOCH'.
* gnu/packages/patches/perl-deterministic-ordering.patch,
gnu/packages/patches/perl-no-build-time.patch,
gnu/packages/patches/perl-source-date-epoch.patch: New files.
* gnu/packages/perl.scm (perl)[source]: Use them.
* gnu-system.am (dist_patch_DATA): Add them.
---
gnu/packages/patches/perl-source-date-epoch.patch | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
create mode 100644 gnu/packages/patches/perl-source-date-epoch.patch
(limited to 'gnu/packages/patches/perl-source-date-epoch.patch')
diff --git a/gnu/packages/patches/perl-source-date-epoch.patch b/gnu/packages/patches/perl-source-date-epoch.patch
new file mode 100644
index 0000000000..37330c9537
--- /dev/null
+++ b/gnu/packages/patches/perl-source-date-epoch.patch
@@ -0,0 +1,19 @@
+Adapted from <https://bugs.debian.org/801621>.
+Make Pod::Man honor the SOURCE_DATE_EPOCH environment variable.
+
+--- perl-5.22.0/cpan/podlators/lib/Pod/Man.pm 2015-12-12 22:33:03.321787590 +0100
++++ perl-5.22.0/cpan/podlators/lib/Pod/Man.pm 2015-12-12 22:36:33.367361338 +0100
+@@ -884,7 +884,12 @@ sub devise_date {
+ my ($self) = @_;
+ my $input = $self->source_filename;
+ my $time;
+- if ($input) {
++
++ if (defined($ENV{SOURCE_DATE_EPOCH}) &&
++ $ENV{SOURCE_DATE_EPOCH} !~ /\D/) {
++ $time = $ENV{SOURCE_DATE_EPOCH};
++ }
++ elsif ($input) {
+ $time = (stat $input)[9] || time;
+ } else {
+ $time = time;
--
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