From 4c49606598ab3089f0cec9be724ae2f3ab4c1ba3 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 13 Jan 2015 11:54:06 -0500
Subject: [PATCH] jsoncpp: Provide 'isfinite' implementation on ancient glibc

The glibc 2.1 headers provide isfinite only in C99 mode.
Add its definition ourselves.
---
 Utilities/cmjsoncpp/src/lib_json/json_writer.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Utilities/cmjsoncpp/src/lib_json/json_writer.cpp b/Utilities/cmjsoncpp/src/lib_json/json_writer.cpp
index 89964ea32..0a42cc4bf 100644
--- a/Utilities/cmjsoncpp/src/lib_json/json_writer.cpp
+++ b/Utilities/cmjsoncpp/src/lib_json/json_writer.cpp
@@ -21,6 +21,13 @@
 #define snprintf _snprintf
 #endif
 
+// Ancient glibc
+#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 2
+# if !defined(isfinite)
+#  define isfinite __finite
+# endif
+#endif
+
 #if defined(_MSC_VER) && _MSC_VER >= 1400 // VC++ 8.0
 // Disable warning about strdup being deprecated.
 #pragma warning(disable : 4996)