Source: 4ti2
Version: 1.6.7+ds-1
Severity: wishlist
Tags: patch
User: reproducible-builds@lists.alioth.debian.org
Usertags: timestamps locale
X-Debbugs-Cc: reproducible-builds@lists.alioth.debian.org

Hi!

While working on the "reproducible builds" effort [1], we have noticed
that 4ti2 could not be built reproducibly.
It embeds a locale- and timezone-dependent timestamp into the
documentation.

The attached patch fixes this by using the C locale and UTC for
generating the timestamp.

Regards,
 Reiner

[1]: https://wiki.debian.org/ReproducibleBuilds
diff --git a/debian/patches/reproducible-build.patch b/debian/patches/reproducible-build.patch
new file mode 100644
index 0000000..fbf79fe
--- /dev/null
+++ b/debian/patches/reproducible-build.patch
@@ -0,0 +1,11 @@
+--- a/doc/Makefile.am
++++ b/doc/Makefile.am
+@@ -2,7 +2,7 @@
+ export BIBINPUTS = $(abs_top_srcdir)/doc
+ export BSTINPUTS = $(abs_top_srcdir)/doc
+ 
+-DEB_PKG_DATE_LTXD = $(shell date -d "$(DEB_PKG_DATE)" +"%B %d, %Y")
++DEB_PKG_DATE_LTXD = $(shell LC_ALL=C date -u -d "$(DEB_PKG_DATE)" +"%B %d, %Y")
+ 
+ BIBTEX = bibtex
+ PDFLATEX = pdflatex
diff --git a/debian/patches/series b/debian/patches/series
index 31b77dd..035c63d 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -6,3 +6,4 @@ debianization.patch
 debianization-prefix.patch
 debianization-documentation.patch
 debianization-documentation-prefix.patch
+reproducible-build.patch
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