Upstream-Status: Backport

Signed-off-by: Marko Lindqvist
diff -Nurd curl-7.28.1/configure.ac curl-7.28.1/configure.ac
--- curl-7.28.1/configure.ac	2012-09-08 23:39:18.000000000 +0300
+++ curl-7.28.1/configure.ac	2013-01-12 09:15:27.753572960 +0200
@@ -35,7 +35,7 @@
 terms of the curl license; see COPYING for more details])

 AC_CONFIG_SRCDIR([lib/urldata.h])
-AM_CONFIG_HEADER(lib/curl_config.h include/curl/curlbuild.h)
+AC_CONFIG_HEADERS([lib/curl_config.h include/curl/curlbuild.h])
 AC_CONFIG_MACRO_DIR([m4])
 AM_MAINTAINER_MODE