Add missing includes.
Thanks to Alan Teeder
#ifndef _INPUTVALUE_HXX
#define _INPUTVALUE_HXX 1
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+
#include <simgear/structure/SGExpression.hxx>
namespace FGXMLAutopilot {
#include "digitalcomponent.hxx"
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
namespace FGXMLAutopilot {
/**
#ifndef FG_FLIGHT_PROPERTIES_HXX
#define FG_FLIGHT_PROPERTIES_HXX
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
#include <memory>
#include <simgear/math/SGMathFwd.hxx> // for SGVec3d
#include <simgear/math/SGMisc.hxx>