#!/bin/bash

# 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.

# Performs an update of the chroot.

# Load common CrOS utilities.  Inside the chroot this file is installed in
# /usr/lib/crosutils.  Outside the chroot we find it relative to the script's
# location.
. "$(dirname $0)/common.sh" || ! echo "Unable to load common.sh" || exit 1

# Script must run inside the chroot
assert_inside_chroot "$@"

# Flags
DEFINE_boolean usepkg $FLAGS_TRUE \
  "Use binary packages to bootstrap."
DEFINE_boolean fast ${DEFAULT_FAST} "Call many emerges in parallel"
DEFINE_integer retries -1 \
  "On build failure, the number of times to retry."

# Parse command line flags
FLAGS "$@" || exit 1
eval set -- "${FLAGS_ARGV}"

# Only now can we die on error.  shflags functions leak non-zero error codes,
# so will die prematurely if 'set -e' is specified before now.
set -e

info "Updating chroot"

# Perform an update of hard-host-depends and world in the chroot.
EMERGE_CMD="emerge"
if [ "${FLAGS_fast}" -eq "${FLAGS_TRUE}" ]; then
  EMERGE_CMD="${GCLIENT_ROOT}/chromite/bin/parallel_emerge"
fi
if [ "${FLAGS_usepkg}" -eq "${FLAGS_TRUE}" ]; then
  EMERGE_CMD="${EMERGE_CMD} -g"
fi
eretry sudo -E ${EMERGE_CMD} -uDNv chromeos-base/hard-host-depends world