1. Not to assert inside chroot, if so desired.

common.sh

 # Copyright (c) 2010 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 59 matching lines @@
   # Read settings
   . $CHROMEOS_DEV_SETTINGS
 
   # Restore previous state of exit-on-error
   eval "$SAVE_OPTS"
 fi
 
 # Load shflags
 if [[ -f /usr/lib/shflags ]]; then
   . /usr/lib/shflags
+elif [ -f ./lib/shflags/shflags ]; then
+  . "./lib/shflags/shflags"
 else
   . "${SRC_ROOT}/scripts/lib/shflags/shflags"
 fi
 
 # Our local mirror
 DEFAULT_CHROMEOS_SERVER=${CHROMEOS_SERVER:-"http://build.chromium.org/mirror"}
 
 # Upstream mirrors and build suites come in 2 flavors
 #   DEV - development chroot, used to build the chromeos image
 #   IMG - bootable image, to run on actual hardware
@@ skipping 424 matching lines @@
 chroot_hacks_from_outside() {
   # Give args better names.
   local chroot_dir="${1}"
 
   # Add root as a sudoer if not already done.
   if ! sudo grep -q '^root ALL=(ALL) ALL$' "${chroot_dir}/etc/sudoers" ; then
     info "Upgrading old chroot (pre 2010-10-19) - adding root to sudoers"
     sudo bash -c "echo root ALL=\(ALL\) ALL >> \"${chroot_dir}/etc/sudoers\""
   fi
 }