Set FORCE_SOURCE_DATE in debian/rules

diff --git a/debian/rules b/debian/rules
index 6be9baaca06076ef973f721f1a17a2a5eb7f978e..6179ba751a024e94af774d568b73dc628f6219fd 100755 (executable)
--- a/debian/rules
+++ b/debian/rules
@@ -8,6 +8,9 @@ makebuildargs := OPTIMISE= \
  XCPPFLAGS="$(shell dpkg-buildflags --get CPPFLAGS)" \
  XLDFLAGS="$(shell dpkg-buildflags --get LDFLAGS)"
 
+# Persuade TeX that we really want to honour SOURCE_DATE_EPOCH.
+export FORCE_SOURCE_DATE=1
+
 %:
        dh "$@"