// Calculate ILS heading
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
#include <simgear/compiler.h>
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
-#include STL_STRING
+#include <string>
#include <plib/sg.h>
#include <simgear/math/sg_geodesy.hxx>
-SG_USING_STD(string);
-SG_USING_STD(cout);
-SG_USING_STD(endl);
+using std::string;
+using std::cout;
+using std::endl;
int main( int argc, char **argv ) {