math: Move lerp function into SGMisc.

[simgear.git] / simgear / math / SGGeod.cxx

diff --git a/simgear/math/SGGeod.cxx b/simgear/math/SGGeod.cxx
index 15468707dc4034ef7ad9ca959511aaf4438e7ba9..20fa1938369307f92e02a66a3d4358f1e87088b2 100644 (file)
--- a/simgear/math/SGGeod.cxx
+++ b/simgear/math/SGGeod.cxx
@@ -15,6 +15,10 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 
+#ifdef HAVE_CONFIG_H
+#  include <simgear_config.h>
+#endif
+
 #include "SGMath.hxx"
 
 #ifndef NO_OPENSCENEGRAPH_INTERFACE