$OpenBSD$
--- source/ogre/Update_Poses.cpp.orig	Tue Aug  6 05:57:30 2013
+++ source/ogre/Update_Poses.cpp	Fri Aug  9 17:33:35 2013
@@ -171,7 +171,7 @@ void App::newPoses(float time)  // time only for camer
 		q1.FromAngleAxis(-rad,Vector3(axi.z,-axi.x,-axi.y));  pi.rot = q1 * qFixCar;
 		Vector3 vcx,vcz;  q1.ToAxes(vcx,pi.carY,vcz);
 
-		if (!isnan(whPos[0][0]))
+		if (!std::isnan(whPos[0][0]))
 		for (int w=0; w < 4; ++w)
 		{
 			pi.whPos[w] = Vector3(whPos[w][0],whPos[w][2],-whPos[w][1]);