#!/bin/sh

# Poky Build Enviroment Setup Script
#
# Copyright (C) 2006-2007 OpenedHand Ltd.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

# scripts/ is a sub-directory of OEROOT, we use readlink to get the full path
SCRIPTPATH=`readlink -f "$BASH_SOURCE"`
OEROOT="`dirname $SCRIPTPATH`/../"

if [ "x$BDIR" = "x" ]; then
    if [ "x$1" = "x" ]; then
        BDIR="build"
    else
        BDIR=`readlink -f "$1"`
    fi
fi
if [[ "$BDIR" = /* ]] ; then
    BUILDDIR="$BDIR"
else
    BUILDDIR="`pwd`/$BDIR"
fi
unset BDIR

mkdir -p $BUILDDIR/conf
if ! (test -w "$BUILDDIR"); then
    echo >&2 "Error: Cannot write to $BUILDDIR, perhaps try sourcing with a writable path? i.e. . poky-init-build-env ~/my-build"
    return
fi

BITBAKEDIR="$OEROOT/bitbake$BBEXTRA/"

PATH="$BITBAKEDIR/bin/:$OEROOT/scripts:$PATH"

# Remove any symlinks from paths
BITBAKEDIR=`readlink -f "$BITBAKEDIR"`
BUILDDIR=`readlink -f "$BUILDDIR"`
OEROOT=`readlink -f "$OEROOT"`

cd "$BUILDDIR"

if ! (test -d "$BITBAKEDIR" && test -d "$BUILDDIR"); then
    echo >&2 "Error: Not all directories exist! Did you run this script in poky directory?"
    return
fi

# 
# $POKYCONF can point to a directory for the template local.conf & bblayers.conf
#
if [ "x" != "x$POKYCONF" ]; then
    if ! (test -d "$POKYCONF"); then
	# Allow POKYCONF=meta-xyz/conf as a shortcut
	if [ -d "$OEROOT/$POKYCONF" ]; then
	    POKYCONF="$OEROOT/$POKYCONF"
	fi
	if ! (test -d "$POKYCONF"); then
	    echo >&2 "Error: '$POKYCONF' must be a directory containing local.conf & bblayers.conf"
	    return
	fi
    fi
    POKYLAYERCONF="$POKYCONF/bblayers.conf"
    POKYLOCALCONF="$POKYCONF/local.conf"
fi

if [ "x" = "x$POKYLOCALCONF" ]; then
    POKYLOCALCONF="$OEROOT/meta/conf/local.conf.sample"
fi
if ! (test -r "$BUILDDIR/conf/local.conf"); then
cat <<EOM
You had no conf/local.conf file. Poky has created this configuration file for
you with some default values. You may wish to edit it to use a different MACHINE
(target hardware) or enable parallel build options to take advantage of multiple
cores for example. See the file for more information as common configuration
options are commented.

Also, for more information see the Poky handbook:
http://pokylinux.org/doc/poky-handbook.html

EOM
    cp -f $POKYLOCALCONF $BUILDDIR/conf/local.conf
fi

if [ "x" = "x$POKYLAYERCONF" ]; then
    POKYLAYERCONF="$OEROOT/meta/conf/bblayers.conf.sample"
fi
if ! (test -r "$BUILDDIR/conf/bblayers.conf"); then
cat <<EOM
You had no conf/bblayers.conf file. Poky has created this configuration file for
you with some default values. To add additional metadata layers into your
configuration please add entries to this file.

For more information see the Poky handbook:
    http://pokylinux.org/doc/poky-handbook.html

EOM

    # Put the abosolute path to the layers in bblayers.conf so we can run
    # bitbake without the init script after the first run
    sed "s|##POKYBASE##|$OEROOT|g" $POKYLAYERCONF > $BUILDDIR/conf/bblayers.conf
fi

# Prevent disturbing a new GIT clone in same console
unset POKYLOCALCONF
unset POKYLAYERCONF
unset BITBAKEDIR
unset OEROOT

# Used by the poky-qemu script
export BUILDDIR
export PATH
# Stop multi byte characters breaking the patcher stuff - This is for Redhat / Fedora people really
export LANG=C
export BB_ENV_EXTRAWHITE="MACHINE DISTRO POKYMODE POKYLIBC http_proxy ftp_proxy https_proxy all_proxy ALL_PROXY no_proxy SSH_AGENT_PID SSH_AUTH_SOCK BB_SRCREV_POLICY SDKMACHINE BB_NUMBER_THREADS GIT_PROXY_COMMAND"

cat <<EOM

### Shell environment set up for Poky builds. ###

You can now run 'bitbake <target>'

Common targets are:
    poky-image-minimal
    poky-image-sato
    meta-toolchain
    meta-toolchain-sdk

You can also run generated qemu images with a command like 'poky-qemu qemux86'

EOM