From 05f569e0aed4d7f05f9f3a9d6a6af8a7e5578a0a Mon Sep 17 00:00:00 2001
From: Paul Ramsey <pramsey@cleverelephant.ca>
Date: Fri, 1 Aug 2014 23:17:00 +0000
Subject: [PATCH] Make the two-line decl check work

git-svn-id: http://svn.osgeo.org/postgis/trunk@12856 b70326c6-7e19-0410-871a-916f4a2858ee
---
 configure.ac | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index a63adee57..4d7d7db00 100644
--- a/configure.ac
+++ b/configure.ac
@@ -125,10 +125,16 @@ AC_CHECK_DECL(isfinite,
   [],
   [#include <math.h>])
 
+dnl Clear the cache
+unset ac_cv_have_decl_isfinite
+
 AC_CHECK_DECL(isfinite,
   AC_DEFINE([HAVE_GNU_ISFINITE]),
   [],
-  [[#define _GNU_SOURCE],[#include <math.h>]])
+  [[
+    #define _GNU_SOURCE 
+    #include <math.h>
+  ]])
 
 dnl 
 dnl MingW requires use of pwd -W to give proper Windows (not MingW) paths 
-- 
2.40.0