# HG changeset patch
# User Chris Cannam <c.cannam@qmul.ac.uk>
# Date 1381926540 -3600
# Node ID 0ea56b09577e1586b3d6fb5cc9e0928cb6a68cf6
# Parent  7a225d665ed297828acbab1a7af60a5fb71f0d0d
Error if no thread implementation selected

diff -r 7a225d665ed2 -r 0ea56b09577e thread/Thread.h
--- a/thread/Thread.h	Wed Oct 16 12:52:44 2013 +0100
+++ b/thread/Thread.h	Wed Oct 16 13:29:00 2013 +0100
@@ -15,6 +15,8 @@
 #else /* !_WIN32 */
 #ifdef USE_PTHREADS
 #include <pthread.h>
+#else
+#error Must have either _WIN32 or USE_PTHREADS defined
 #endif /* USE_PTHREADS */
 #endif /* !_WIN32 */