--- metis-4.0/Lib/proto.h	1998-11-30 10:26:50.000000000 -0600
+++ metis-4.0-htor/Lib/proto.h	2010-12-27 16:40:15.000000000 -0600
@@ -145,9 +145,16 @@
 void RandomBisection(CtrlType *, GraphType *, int *, float);
 
 /* kmetis.c */
+#ifdef __cplusplus
+extern "C" {
+#endif
 void METIS_PartGraphKway(int *, idxtype *, idxtype *, idxtype *, idxtype *, int *, int *, int *, int *, int *, idxtype *); 
 void METIS_WPartGraphKway(int *, idxtype *, idxtype *, idxtype *, idxtype *, int *, int *, int *, float *, int *, int *, idxtype *); 
 int MlevelKWayPartitioning(CtrlType *, GraphType *, int, idxtype *, float *, float);
+#ifdef __cplusplus
+}
+#endif
+
 
 /* kvmetis.c */
 void METIS_PartGraphVKway(int *, idxtype *, idxtype *, idxtype *, idxtype *, int *, int *, int *, int *, int *, idxtype *);
@@ -356,12 +363,18 @@
 void METIS_EdgeComputeSeparator(int *, idxtype *, idxtype *, idxtype *, idxtype *, int *, int *, idxtype *); 
 
 /* pmetis.c */
+#ifdef __cplusplus
+extern "C" {
+#endif
 void METIS_PartGraphRecursive(int *, idxtype *, idxtype *, idxtype *, idxtype *, int *, int *, int *, int *, int *, idxtype *); 
 void METIS_WPartGraphRecursive(int *, idxtype *, idxtype *, idxtype *, idxtype *, int *, int *, int *, float *, int *, int *, idxtype *); 
 int MlevelRecursiveBisection(CtrlType *, GraphType *, int, idxtype *, float *, float, int);
 void MlevelEdgeBisection(CtrlType *, GraphType *, int *, float);
 void SplitGraphPart(CtrlType *, GraphType *, GraphType *, GraphType *);
 void SetUpSplitGraph(GraphType *, GraphType *, int, int);
+#ifdef __cplusplus
+}
+#endif
 
 /* pqueue.c */
 void PQueueInit(CtrlType *ctrl, PQueueType *, int, int);