THRIFT-1320 Consistency of configure generated config.h
Patch: Alexandre Parenteau

git-svn-id: https://svn.apache.org/repos/asf/thrift/trunk@1165400 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/concurrency/Mutex.cpp b/lib/cpp/src/concurrency/Mutex.cpp
index 8d52452..0cfa0ad 100644
--- a/lib/cpp/src/concurrency/Mutex.cpp
+++ b/lib/cpp/src/concurrency/Mutex.cpp
@@ -17,11 +17,16 @@
  * under the License.
  */
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
 #include "Mutex.h"
 #include "Util.h"
 
 #include <assert.h>
+#ifdef HAVE_PTHREAD_H
 #include <pthread.h>
+#endif
 #include <signal.h>
 
 using boost::shared_ptr;