From 86a0f10ac72620b84aeabca6a26962d5f2198c6e Mon Sep 17 00:00:00 2001
From: Tim Mayberry <mojofunk@gmail.com>
Date: Thu, 8 May 2014 14:06:18 +1000
Subject: [PATCH] Reinstate code removed that allows building with mingw and
 the pthreads-win32 library

Newer versions of mingw-w64 can be built with an included pthread implementation
called winpthreads which uses an integer type for pthread_t but pthreads-win32 does
not.
---
 libs/pbd/pbd/abstract_ui.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/libs/pbd/pbd/abstract_ui.h b/libs/pbd/pbd/abstract_ui.h
index 8e386aa4eb..a8602c7d78 100644
--- a/libs/pbd/pbd/abstract_ui.h
+++ b/libs/pbd/pbd/abstract_ui.h
@@ -75,8 +75,20 @@ class ABSTRACT_UI_API AbstractUI : public BaseUI
         };
 	typedef typename RequestBuffer::rw_vector RequestBufferVector;
 
+#if defined(COMPILER_MINGW) && defined(PTW32_VERSION)
+	struct pthread_cmp
+	{
+		bool operator() (const ptw32_handle_t& thread1, const ptw32_handle_t& thread2)
+		{
+			return thread1.p < thread2.p;
+		}
+	};
+	typedef typename std::map<pthread_t,RequestBuffer*, pthread_cmp>::iterator RequestBufferMapIterator;
+	typedef std::map<pthread_t,RequestBuffer*, pthread_cmp> RequestBufferMap;
+#else
 	typedef typename std::map<pthread_t,RequestBuffer*>::iterator RequestBufferMapIterator;
 	typedef std::map<pthread_t,RequestBuffer*> RequestBufferMap;
+#endif
 
 	RequestBufferMap request_buffers;
         static Glib::Threads::Private<RequestBuffer> per_thread_request_buffer;