Fix Linux compile / math dependency

[flightgear.git] / src / Instrumentation / mrg.cxx

diff --git a/src/Instrumentation/mrg.cxx b/src/Instrumentation/mrg.cxx
index 247ffe5fee33b9ecab4f670603e7b524cbdfadde..2b1280340d35263c0cb207701ba072d744d30ab5 100644 (file)
--- a/src/Instrumentation/mrg.cxx
+++ b/src/Instrumentation/mrg.cxx
@@ -6,9 +6,13 @@
 // TODO:
 // - better spin-up
 
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
 #include <simgear/compiler.h>
 #include <simgear/sg_inlines.h>
-
+#include <simgear/math/SGMath.hxx>
 
 #include <iostream>
 #include <string>