Updates to help work the kinks out of JSBsim.

[flightgear.git] / src / FDM / JSBSim / FGUtility.cpp

diff --git a/src/FDM/JSBSim/FGUtility.cpp b/src/FDM/JSBSim/FGUtility.cpp
index 4d18883dbca31ba9400f6ab00531a1cd8ffdb185..4b72f6132558d5d91b2ef4d0b94b25c39aca3f78 100644 (file)
--- a/src/FDM/JSBSim/FGUtility.cpp
+++ b/src/FDM/JSBSim/FGUtility.cpp
@@ -57,6 +57,12 @@ INCLUDES
 #include "FGState.h"
 #include "FGFDMExec.h"
 
+#ifndef M_PI_2
+/* get a definition for pi */
+#include <Include/fg_constants.h>
+#define M_PI_2 FG_PI_2
+#endif
+
 /*******************************************************************************
 ************************************ CODE **************************************
 *******************************************************************************/