STYLE: clearly document which scripts contain user-configurable settings

- unify cd, check for the cwd and error message

makeQt

@@ -28,21 +28,21 @@
 # Description
 #     Build script for QT (the qt-everywhere-opensource-src package)
 #
-#------------------------------------------------------------------------------
-unset qtVERSION # No default version
-qtTYPE=qt-everywhere-opensource-src
-
+# ----------------------------------------------
+# NO USER-CONFIGURABLE SETTINGS WITHIN THIS FILE
 #------------------------------------------------------------------------------
 # Run from third-party directory only
-wmakeCheckPwd "$WM_THIRD_PARTY_DIR" || {
-    echo "Error: Current directory is not \$WM_THIRD_PARTY_DIR"
-    echo "    The environment variables are inconsistent with the installation."
-    echo "    Check the OpenFOAM entries in your dot-files and source them."
+cd ${0%/*} && wmakeCheckPwd -q "$WM_THIRD_PARTY_DIR" 2>/dev/null || {
+    echo "Error (${0##*/}) : not located in \$WM_THIRD_PARTY_DIR"
+    echo "    Check your OpenFOAM environment and installation"
     exit 1
 }
 . etc/tools/ThirdPartyFunctions
 . etc/tools/QtFunctions
 #------------------------------------------------------------------------------
+qtTYPE=qt-everywhere-opensource-src
+unset qtVERSION # No default version
+#------------------------------------------------------------------------------
 usage() {
     exec 1>&2
     while [ "$#" -ge 1 ]; do echo "$1"; shift; done
@@ -53,7 +53,7 @@ options:
   -gcc              Force gcc/g++ instead of the values from \$WM_CC, \$WM_CXX
   -help
 
-* build $qtTYPE, version $qtVERSION
+* build $qtTYPE, version ${qtVERSION:-undefined}
 
 USAGE
     exit 1