adding Mark's change to the build PV options

bin/tools/buildParaViewFunctions

@@ -170,6 +170,20 @@ addQtSupport()
     [ "${withQTSUPPORT:=false}" = true ] || return
 
     addCMakeVariable "PARAVIEW_BUILD_QT_GUI=ON"
+
+    if [ -n "$QMAKE_PATH" ]
+    then
+        if [ -x "$QMAKE_PATH" ]
+        then
+            addCMakeVariable QT_QMAKE_EXECUTABLE:FILEPATH=$QMAKE_PATH
+        else
+            echo
+            echo "specified QMAKE_PATH does not exist on this machine"
+            echo "    QMAKE_PATH=$QMAKE_PATH"
+            echo "leaving unspecified"
+            echo
+        fi
+    fi
 }