Add a warning to users trying to run old build scripts.

src/scripts/common.sh

 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Common constants for build scripts
 # This must evaluate properly for both /bin/bash and /bin/sh
 
 # All scripts should die on error unless commands are specifically excepted
 # by prefixing with '!' or surrounded by 'set +e' / 'set -e'.
 # TODO: Re-enable this once shflags is less prone to dying.
@@ skipping 90 matching lines @@
 if [ -e /etc/debian_chroot ]
 then
   INSIDE_CHROOT=1
 else
   INSIDE_CHROOT=0
 fi
 
 # Directory locations inside the dev chroot
 CHROOT_TRUNK_DIR="/home/$USER/trunk"
 
+# Check to ensure not running old scripts
+V_REVERSE=''
+V_VIDOFF=''
+case "$(basename $0)" in
+  build_image.sh|build_platform_packages.sh|customize_rootfs.sh|make_chroot.sh)
+  echo
+  echo "$V_REVERSE============================================================"
+  echo "===========================  WARNING  ======================"
+  echo "============================================================$V_VIDOFF"
+  echo
+  echo "RUNNING OLD BUILD SYSTEM SCRIPTS. RUN THE PORTAGE-BASED BUILD HERE:"
+  echo "http://www.chromium.org/chromium-os/building-chromium-os/portage-based-build"
+  echo
+  if [ "$USER" != "chrome-bot" ]
+  then
+    read -n1 -p "Press any key to continue using the OLD build system..."
+    echo
+    echo
+  fi
+  ;;
+esac
+
 # -----------------------------------------------------------------------------
 # Functions
 
 # Make a package
 function make_pkg_common {
   # Positional parameters from calling script.  :? means "fail if unset".
   set -e
   PKG_BASE=${1:?}
   shift
   set +e
@@ skipping 65 matching lines @@
   then
     echo "Can't find $PKG_NAME; attempting to install it."
     sudo apt-get --yes --force-yes install $PKG_NAME
   fi
 }
 
 # Returns true if the input file is whitelisted.
 #
 # $1 - The file to check
 is_whitelisted() {
-  local file=$1  
+  local file=$1
   local whitelist="$FLAGS_whitelist"
   test -f "$whitelist" || (echo "Whitelist file missing ($whitelist)" && exit 1)
 
   local checksum=$(md5sum "$file" | awk '{ print $1 }')
   local count=$(sed -e "s/#.*$//" "${whitelist}" | grep -c "$checksum" \
                 || /bin/true)
   test $count -ne 0
 }