--- ncl_ncarg-5.0.0/ni/src/lib/hlu/CnTriMeshRenderer.c.orig	2007-11-13 15:00:42.000000000 -0700
+++ ncl_ncarg-5.0.0/ni/src/lib/hlu/CnTriMeshRenderer.c	2007-11-13 15:01:05.000000000 -0700
@@ -30,8 +30,10 @@
 #include <ncarg/hlu/CurvilinearTransObj.h>
 #include <ncarg/hlu/SphericalTransObj.h>
 #include <ncarg/hlu/TriMeshTransObj.h>
+#ifdef BuildTRIANGLE
 #define REAL double
 #include <ncarg/hlu/triangle.h>
+#endif
 
 #define Oset(field) \
     NhlOffset(NhlCnTriMeshRendererLayerRec,cntrimeshrenderer.field)