From 7b75043bbb89bd9c2e67f0c9838c04bcbcc51b1c Mon Sep 17 00:00:00 2001
From: Michael Elkins <me@sigpipe.org>
Date: Thu, 27 Dec 2012 17:37:42 -0800
Subject: [PATCH] use [] around body of AC_CHECK_HEADER to avoid problems with
 older versions of autoconf

---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 34d0dccc3..d605da25d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1176,7 +1176,7 @@ if test "x$with_idn" != "xno"; then
     have_idna_libs=no
     dnl AC_CHECK_HEADERS also defines HAVE_<NAME> which we don't care about here
     AC_CHECK_HEADER(stringprep.h,
-      AC_CHECK_HEADER(idna.h, [have_idna_includes=yes]))
+      [AC_CHECK_HEADER(idna.h, [have_idna_includes=yes])])
     if test $have_idna_includes = yes; then
       AC_SEARCH_LIBS([stringprep_check_version], [idn], [
 	have_idna_libs=yes
-- 
2.50.1