From 8c265a45e54a77003ce754fac893eaf292f7cd6d Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Thu, 12 Nov 2009 09:38:34 +0100
Subject: [PATCH] build: generalize autoheader check

* bootstrap: Look for AC_CONFIG_HEADER as well as AC_CONFIG_HEADERS.
---
 bootstrap | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bootstrap b/bootstrap
index 97300b4..8afbd8e 100755
--- a/bootstrap
+++ b/bootstrap
@@ -733,7 +733,7 @@ find "$m4_base" "$source_base" \
 # Reconfigure, getting other files.
 
 # Skip autoheader if it's not needed.
-grep '^[	 ]*AC_CONFIG_HEADERS\>' configure.ac >/dev/null ||
+grep -E '^[	 ]*AC_CONFIG_HEADERS?\>' configure.ac >/dev/null ||
   AUTOHEADER=true
 
 for command in \