clover: Build fix for FreeBSD.

Cc: 10.6 10.5 <mesa-stable@lists.freedesktop.org>

diff --git a/src/gallium/state_trackers/clover/core/error.hpp b/src/gallium/state_trackers/clover/core/error.hpp
index eb65d62..780b973 100644 (file)
--- a/src/gallium/state_trackers/clover/core/error.hpp
+++ b/src/gallium/state_trackers/clover/core/error.hpp
@@ -26,6 +26,7 @@
 #include "CL/cl.h"
 
 #include <stdexcept>
+#include <string>
 
 namespace clover {
    class command_queue;