Towards reproducible builds.
diff --git a/ChangeLog b/ChangeLog
index aeca305..74bf540 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2016-12-03  Bruno Haible  <bruno@clisp.org>
+
+	Towards reproducible builds.
+	* Makefile.devel (man/%.html): Remove the CreationDate comment line
+	from the output.
+
 2016-12-04  Bruno Haible  <bruno@clisp.org>
 
 	Update to gettext-0.19.8.1.
diff --git a/Makefile.devel b/Makefile.devel
index dcf3b62..3aafa96 100644
--- a/Makefile.devel
+++ b/Makefile.devel
@@ -194,7 +194,9 @@
 
 
 man/%.html : man/%
-	$(MAN2HTML) $< > $@
+	$(MAN2HTML) $< > $@-t
+	grep -v '<!-- CreationDate' < $@-t > $@
+	$(RM) $@-t
 
 
 force :