diff --git a/src/Airports/simple.cxx b/src/Airports/simple.cxx
index 7a5871fd7..2ebfb8434 100644
--- a/src/Airports/simple.cxx
+++ b/src/Airports/simple.cxx
@@ -335,6 +335,16 @@ public:
   {
     return mOrdering->compare(aA.first,aB);
   }
+
+  bool operator()(const std::string& aA, const airport_map::value_type& aB) const
+  {
+    return mOrdering->compare(aA, aB.first);
+  }
+
+  bool operator()(const airport_map::value_type& aA, const airport_map::value_type& aB) const
+  {
+    return mOrdering->compare(aA.first, aB.first);
+  }
   
 private:
   FGIdentOrdering* mOrdering;
diff --git a/src/Main/metar_main.cxx b/src/Main/metar_main.cxx
index 0857bac5d..d150b6526 100644
--- a/src/Main/metar_main.cxx
+++ b/src/Main/metar_main.cxx
@@ -24,6 +24,7 @@
 #include <sstream>
 #include <iostream>
 #include <string.h>
+#include <time.h>
 
 #include <simgear/debug/logstream.hxx>
 #include <simgear/environment/metar.hxx>
@@ -76,7 +77,7 @@ const char *azimuthName(double d)
 double rnd(double r, int g = 0)
 {
 	double f = pow(10.0, g);
-	return f * rint(r / f);
+	return f * floor(r / f + 0.5);
 }
 
 
diff --git a/src/Navaids/fixlist.cxx b/src/Navaids/fixlist.cxx
index 2749cf22c..a07429f06 100644
--- a/src/Navaids/fixlist.cxx
+++ b/src/Navaids/fixlist.cxx
@@ -145,6 +145,16 @@ public:
   {
     return mOrdering->compare(aA.first,aB);
   }
+
+  bool operator()(const std::string& aA, const fix_map_type::value_type& aB) const
+  {
+    return mOrdering->compare(aA, aB.first);
+  }
+
+  bool operator()(const fix_map_type::value_type& aA, const fix_map_type::value_type& aB) const
+  {
+    return mOrdering->compare(aA.first, aB.first);
+  }
   
 private:
   FGIdentOrdering* mOrdering;