Add ARM cross-compiler to chroot.

src/scripts/make_chroot.sh

 #!/bin/bash
 
 # 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.
 
 # This script sets up an Ubuntu chroot environment. The ideas come
 # from https://wiki.ubuntu.com/DebootstrapChroot and conversations with
 # tedbo. The script is passed the path to an empty folder, which will be
 # populated with the files to form an Ubuntu Jaunty system with the packages
 # listed in PACKAGE_LIST_FILE (below) and their dependencies. Once created,
 # the password is set to PASSWORD (below). One can enter the chrooted
 # environment for work by running
 # enter_chroot_dev_environment.sh /path/to/chroot-root
 
 # Load common constants.  This should be the first executable line.
 # The path to common.sh should be relative to your script's location.
 . "$(dirname "$0")/common.sh"
 
 # Script must be run outside the chroot and as a regular user.
 assert_outside_chroot
 assert_not_root_user
 
 DEFAULT_PKGLIST="$SRC_ROOT/package_repo/package-list-dev.txt"
 
 # Define command line flags
 # See http://code.google.com/p/shflags/wiki/Documentation10x
 DEFINE_string suite "$DEFAULT_DEV_SUITE" "Repository suite to base image on."
 DEFINE_string mirror "$DEFAULT_DEV_MIRROR" "Local repository mirror to use."
+DEFINE_string mirror2 "" "Additional repository mirror to use (URL only)."
+DEFINE_string suite2 "" "Repository suite for additional mirror."
 DEFINE_string chroot "$DEFAULT_CHROOT_DIR" \
   "Destination dir for the chroot environment."
 DEFINE_string pkglist "$DEFAULT_PKGLIST" \
   "File listing additional packages to install."
 DEFINE_boolean delete $FLAGS_FALSE "Delete an existing chroot." 
 DEFINE_boolean replace $FLAGS_FALSE "Overwrite existing chroot, if any."
 
 # Parse command line flags
 FLAGS "$@" || exit 1
 eval set -- "${FLAGS_ARGV}"
@@ skipping 86 matching lines @@
 # the user's already typed in one sudo password...)
 bash_chroot "echo %admin ALL=\(ALL\) ALL >> /etc/sudoers"
 bash_chroot "echo $USER ALL=NOPASSWD: ALL >> /etc/sudoers"
 
 # Set up apt sources
 # If a local repository is used, it will have a different path when 
 # bind-mounted inside the chroot
 MIRROR_INSIDE="${FLAGS_mirror/$GCLIENT_ROOT/$CHROOT_TRUNK_DIR}"
 bash_chroot "echo deb $MIRROR_INSIDE $FLAGS_suite \
   main restricted multiverse universe > /etc/apt/sources.list"
+# Additional repo? Note: Not mounted inside - must use URL
+if [ -n "$FLAGS_mirror2" ]; then
+  bash_chroot "echo deb $FLAGS_mirror2 $FLAGS_suite2 \
+    main restricted multiverse universe >> /etc/apt/sources.list"
+fi
+
 # TODO: enable sources when needed.  Currently, kernel source is checked in
 # and all other sources are pulled via DEPS files.
 #bash_chroot "echo deb-src $MIRROR_INSIDE $FLAGS_suite \
 #  main restricted multiverse universe >> /etc/apt/sources.list"
 
 # Set /etc/debian_chroot so '(chroot)' shows up in shell prompts
 CHROOT_BASE=`basename $FLAGS_chroot`
 bash_chroot "echo $CHROOT_BASE > /etc/debian_chroot"
 
 # Copy config from outside chroot into chroot
@@ skipping 52 matching lines @@
   CHROOT_EXAMPLE_OPT="--chroot=$FLAGS_chroot"
 fi
 
 echo "All set up.  To enter the chroot, run:"
 echo "    $SCRIPTS_DIR/enter_chroot.sh $CHROOT_EXAMPLE_OPT"
 echo ""
 echo "CAUTION: Do *NOT* rm -rf the chroot directory; if there are stale bind"
 echo "mounts you may end up deleting your source tree too.  To unmount and"
 echo "delete the chroot cleanly, use:"
 echo "    $0 --delete $CHROOT_EXAMPLE_OPT"