diff --git a/applications/utilities/postProcessing/dataConversion/foamToTecplot360/tecio/tecsrc/GLOBAL.h b/applications/utilities/postProcessing/dataConversion/foamToTecplot360/tecio/tecsrc/GLOBAL.h
index 21e35a947..097385dd5 100644
--- a/applications/utilities/postProcessing/dataConversion/foamToTecplot360/tecio/tecsrc/GLOBAL.h
+++ b/applications/utilities/postProcessing/dataConversion/foamToTecplot360/tecio/tecsrc/GLOBAL.h
@@ -648,7 +648,8 @@
     defined LINUXI64   || \
     defined LINUX64    || \
     defined MAC64      || \
-    defined COMPAQALPHA
+    defined COMPAQALPHA || \
+    defined darwin
 #define LONGIS64
 #endif
 
diff --git a/applications/utilities/postProcessing/dataConversion/foamToTecplot360/tecio/tecsrc/MASTER.h b/applications/utilities/postProcessing/dataConversion/foamToTecplot360/tecio/tecsrc/MASTER.h
index 38c495dcf..17a568071 100644
--- a/applications/utilities/postProcessing/dataConversion/foamToTecplot360/tecio/tecsrc/MASTER.h
+++ b/applications/utilities/postProcessing/dataConversion/foamToTecplot360/tecio/tecsrc/MASTER.h
@@ -373,7 +373,7 @@
 #define SYSV
 #endif
 
-#if defined DECX || defined LINUX || defined IBMRS6000X || defined COMPAQX || defined DARWIN
+#if defined DECX || defined LINUX || defined IBMRS6000X || defined COMPAQX || defined DARWIN || defined darwin
 #define UNIXX
 #endif
 
diff --git a/applications/utilities/postProcessing/graphics/PV3FoamReader/Allwmake b/applications/utilities/postProcessing/graphics/PV3FoamReader/Allwmake
index c7a80fc7f..452d0dedd 100755
--- a/applications/utilities/postProcessing/graphics/PV3FoamReader/Allwmake
+++ b/applications/utilities/postProcessing/graphics/PV3FoamReader/Allwmake
@@ -12,6 +12,11 @@ then
          mkdir -p Make/$WM_OPTIONS > /dev/null 2>&1
          cd Make/$WM_OPTIONS
          cmake ../..
+	 if [ $WM_ARCH_BASE == "darwin" ]
+	 then
+	     sed -i bak -e 's/-dynamiclib /& -undefined dynamic_lookup /' CMakeFiles/PV3FoamReader.dir/link.txt	 
+	     sed -i bak -e 's/-dynamiclib /& -undefined dynamic_lookup /' CMakeFiles/PV3FoamReader_SM.dir/link.txt	 
+	 fi
          make
       )
       ;;