STYLE: clearly document which scripts contain user-configurable settings

- unify cd, check for the cwd and error message

makeCmake

@@ -4,7 +4,7 @@
 # \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
 #  \\    /   O peration     |
 #   \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
-#    \\/     M anipulation  | Copyright (C) 2016 OpenCFD Ltd.
+#    \\/     M anipulation  | Copyright (C) 2016-2017 OpenCFD Ltd.
 #------------------------------------------------------------------------------
 # License
 #     This file is part of OpenFOAM.
@@ -28,20 +28,20 @@
 # Description
 #     Build script for cmake
 #
-#------------------------------------------------------------------------------
-# Special purpose script, no default version.
-unset cmakePACKAGE
-
+# ----------------------------------------------
+# 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 (${0##*/}) : not located in \$WM_THIRD_PARTY_DIR"
+    echo "    Check your OpenFOAM environment and installation"
     exit 1
 }
 . etc/tools/ThirdPartyFunctions
 #------------------------------------------------------------------------------
+# Special purpose script - no default version.
+unset cmakePACKAGE
+#------------------------------------------------------------------------------
 usage() {
     exec 1>&2
     while [ "$#" -ge 1 ]; do echo "$1"; shift; done
@@ -53,7 +53,7 @@ options:
   -help
 
 * build cmake
-      ${cmakePACKAGE:-'unspecified version'}
+      ${cmakePACKAGE:-'unspecified'}
 
 USAGE
     exit 1