ENH: Added PV library existence check to paraFoam script

bin/paraFoam

@@ -117,6 +117,24 @@ do
 done
 
 
+#
+# check that reader module has been built
+#
+if [ ! -f $PV_PLUGIN_PATH/libPV3FoamReader_SM.so ]
+then
+    cat<< BUILDREADER
+
+FATAL ERROR: ParaView reader module libraries do not exist
+
+Please build the reader module before continuing:
+cd \$FOAM_UTILITIES/postProcessing/graphics/PV3Readers
+./Allwclean
+./Allwmake
+
+BUILDREADER
+    exit 1
+fi
+
 #
 # check for --data=... argument
 #