split autoconf target in two
diff --git a/Makefile.in b/Makefile.in
index b17c76a..da06c25 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -278,7 +278,8 @@
 
 # Rebuild the configure script from configure.in; also rebuild config.h.in
 autoconf:
-		(cd $(srcdir); autoconf; autoheader)
+		(cd $(srcdir); autoconf)
+		(cd $(srcdir); autoheader)
 
 # Create a tags file for vi
 tags::