From c4ee01561a4aa24abcae41b03d5ae6bdee77f8fc Mon Sep 17 00:00:00 2001
From: Anders Kaseorg <andersk@mit.edu>
Date: Sun, 18 Mar 2012 23:50:12 -0400
Subject: [PATCH] AX_CHECK_LIBRARY: Do not use m4_ifnblank
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m4_ifnblank requires autoconf 2.64, and doesn’t seem necessary here.

Submitted upstream to autoconf-archive (no response yet):
https://savannah.gnu.org/patch/?7741

Signed-off-by: Anders Kaseorg <andersk@mit.edu>
---
 m4/ax_check_library.m4 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/m4/ax_check_library.m4 b/m4/ax_check_library.m4
index 13dcfd6..d51d038 100644
--- a/m4/ax_check_library.m4
+++ b/m4/ax_check_library.m4
@@ -90,6 +90,6 @@ AC_DEFUN([AX_CHECK_LIBRARY], [
 
   AS_IF([test "$]AS_TR_SH([ax_cv_have_]$1)[" = "yes"],
     AC_DEFINE([HAVE_]$1, [1], [Define to 1 if ]$1[ is found])
-      m4_ifnblank([$4], [$4]),
-    m4_ifnblank([$5], [$5]))
+    [$4],
+    [$5])
 ])