brite: forward declare Brite topology

src/brite/examples/brite-MPI-example.cc

@@ -14,6 +14,8 @@
  *
  */
 
+#include "Brite.h"
+
 #include "ns3/applications-module.h"
 #include "ns3/brite-module.h"
 #include "ns3/core-module.h"

src/brite/examples/brite-generic-example.cc

@@ -14,6 +14,8 @@
  *
  */
 
+#include "Brite.h"
+
 #include "ns3/applications-module.h"
 #include "ns3/brite-module.h"
 #include "ns3/core-module.h"

src/brite/helper/brite-topology-helper.cc

@@ -16,6 +16,8 @@
 
 #include "brite-topology-helper.h"
 
+#include "Brite.h"
+
 #include "ns3/abort.h"
 #include "ns3/data-rate.h"
 #include "ns3/ipv4-address-helper.h"

src/brite/helper/brite-topology-helper.h

@@ -28,8 +28,12 @@
 #include <string>
 #include <vector>
 
-// located in BRITE source directory
-#include "Brite.h"
+// These are in #include <Brite.h>,
+// here we just need a forward declaration.
+namespace brite
+{
+struct Topology;
+};
 
 namespace ns3
 {