$NetBSD: patch-CMakeLists.txt,v 1.5 2012/06/01 21:24:57 wiz Exp $

Handle DragonFly like NetBSD and FreeBSD.
http://code.opencv.org/issues/2010

--- CMakeLists.txt.orig	2012-05-31 14:06:56.000000000 +0000
+++ CMakeLists.txt
@@ -318,7 +318,7 @@ if(UNIX)
     CHECK_INCLUDE_FILE(pthread.h HAVE_LIBPTHREAD)
     if(ANDROID)
       set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} dl m log)
-    elseif(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR ${CMAKE_SYSTEM_NAME} MATCHES "NetBSD")
+    elseif(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR ${CMAKE_SYSTEM_NAME} MATCHES "NetBSD" OR ${CMAKE_SYSTEM_NAME} MATCHES "DragonFly")
       set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} m pthread)
     else()
       set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} dl m pthread rt)