Replace OpenThreads with SGThread to avoid useless OSG dependency.

[simgear.git] / simgear / scene / sky / sphere.cxx

diff --git a/simgear/scene/sky/sphere.cxx b/simgear/scene/sky/sphere.cxx
index c41dd9b36ffb46298590c5dc47b1a00a8bdd2be9..b937c7cc7d1133b67e7078937a88a8d3221c454b 100644 (file)
--- a/simgear/scene/sky/sphere.cxx
+++ b/simgear/scene/sky/sphere.cxx
@@ -26,6 +26,7 @@
 #include <simgear/debug/logstream.hxx>
 
 #include <iostream>
+#include <cstdlib>
 
 #include <osg/Node>
 #include <osg/Geometry>