--- automake-1.15.1.orig/Makefile.in	2017-06-18 19:35:04.000000000 +0200
+++ automake-1.15.1/Makefile.in	2020-10-31 08:38:23.322590385 +0100
@@ -710,7 +710,7 @@ update_mans = \
   $(AM_V_GEN): \
     && $(MKDIR_P) doc \
     && $(extend_PATH) \
-    && $(PERL) $(srcdir)/doc/help2man --output=$@
+    && $(PERL) $(srcdir)/doc/help2man --no-discard-stderr --output=$@
 
 amhello_sources = \
   doc/amhello/configure.ac \