When SimGear header files are included in a particular order, these
missing includes can cause the compilation to fail.
#define SGGeod_H
#include <simgear/constants.h>
+#include <simgear/math/SGVec3.hxx>
// #define SG_GEOD_NATIVE_DEGREE
#include <iosfwd>
+#include <simgear/math/SGLimits.hxx>
+#include <simgear/math/SGMisc.hxx>
+#include <simgear/math/SGMathFwd.hxx>
+
/// 2D Vector Class
template<typename T>
class SGVec2 {
#include <iosfwd>
+#include <simgear/math/SGVec2.hxx>
+#include <simgear/math/SGGeodesy.hxx>
+
/// 3D Vector Class
template<typename T>
class SGVec3 {