From dafa439f88930fcd979191e2bd686b833488b1fd Mon Sep 17 00:00:00 2001
From: Howard Butler <howard@hobu.co>
Date: Thu, 10 Sep 2015 09:19:00 -0500
Subject: check and set HAVE_PTHREAD_MUTEX_RECURSIVE in CMake for #303

---
 CMakeLists.txt | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8bd0f260..ab933f04 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -43,6 +43,19 @@ include(Proj4Config)
 include(Proj4Mac)
 include(policies)
 
+#################################################################################
+# threading configuration
+#################################################################################
+set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
+find_package (Threads)
+
+include(CheckIncludeFiles)
+include(CheckSymbolExists)
+CHECK_SYMBOL_EXISTS(PTHREAD_MUTEX_RECURSIVE pthread.h HAVE_PTHREAD_MUTEX_RECURSIVE_DEFN)
+if (HAVE_PTHREAD_MUTEX_RECURSIVE_DEFN)
+    add_definitions(-DHAVE_PTHREAD_MUTEX_RECURSIVE=1)
+endif()
+
 boost_report_value(PROJ_PLATFORM_NAME)
 boost_report_value(PROJ_COMPILER_NAME)
 
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