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#!/bin/sh

# OE Build Environment Setup Script
#
# Copyright (C) 2006-2011 Linux Foundation
#
# 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

if [ -z "$BUILDDIR" ]; then
    echo >&2 "Error: The build directory (BUILDDIR) must be set!"
    exit 1
fi

mkdir -p "$BUILDDIR/conf"

if [ ! -d "$BUILDDIR" ]; then
    echo >&2 "Error: The builddir ($BUILDDIR) does not exist!"
    exit 1
fi

if [ ! -w "$BUILDDIR" ]; then
    echo >&2 "Error: Cannot write to $BUILDDIR, perhaps try sourcing with a writable path? i.e. . oe-init-build-env ~/my-build"
    exit 1
fi

cd "$BUILDDIR"

if [ -f "$BUILDDIR/conf/templateconf.cfg" ]; then
    TEMPLATECONF=$(cat "$BUILDDIR/conf/templateconf.cfg")
fi

. $OEROOT/.templateconf

if [ ! -f "$BUILDDIR/conf/templateconf.cfg" ]; then
    echo "$TEMPLATECONF" >"$BUILDDIR/conf/templateconf.cfg"
fi

# 
# $TEMPLATECONF can point to a directory for the template local.conf & bblayers.conf
#
if [ -n "$TEMPLATECONF" ]; then
    if [ ! -d "$TEMPLATECONF" ]; then
        # Allow TEMPLATECONF=meta-xyz/conf as a shortcut
        if [ -d "$OEROOT/$TEMPLATECONF" ]; then
            TEMPLATECONF="$OEROOT/$TEMPLATECONF"
        fi
        if [ ! -d "$TEMPLATECONF" ]; then
            echo >&2 "Error: '$TEMPLATECONF' must be a directory containing local.conf & bblayers.conf"
            exit 1
        fi
    fi
    OECORELAYERCONF="$TEMPLATECONF/bblayers.conf.sample"
    OECORELOCALCONF="$TEMPLATECONF/local.conf.sample"
    OECORENOTESCONF="$TEMPLATECONF/conf-notes.txt"
fi

unset SHOWYPDOC
if [ -z "$OECORELOCALCONF" ]; then
    OECORELOCALCONF="$OEROOT/meta/conf/local.conf.sample"
fi
if [ ! -r "$BUILDDIR/conf/local.conf" ]; then
cat <<EOM
You had no conf/local.conf file. This configuration file has therefore been
created 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.

EOM
    cp -f $OECORELOCALCONF "$BUILDDIR/conf/local.conf"
    SHOWYPDOC=yes
fi

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

EOM

    # Put the abosolute path to the layers in bblayers.conf so we can run
    # bitbake without the init script after the first run
    # ##COREBASE## is deprecated as it's meaning was inconsistent, but continue
    # to replace it for compatibility.
    sed -e "s|##OEROOT##|$OEROOT|g" \
        -e "s|##COREBASE##|$OEROOT|g" \
        $OECORELAYERCONF > "$BUILDDIR/conf/bblayers.conf"
    SHOWYPDOC=yes
fi

# Prevent disturbing a new GIT clone in same console
unset OECORELOCALCONF
unset OECORELAYERCONF

# Ending the first-time run message. Show the YP Documentation banner.
if [ ! -z "$SHOWYPDOC" ]; then
    cat <<EOM
The Yocto Project has extensive documentation about OE including a reference
manual which can be found at:
    http://yoctoproject.org/documentation

For more information about OpenEmbedded see their website:
    http://www.openembedded.org/

EOM
#    unset SHOWYPDOC
fi

cat <<EOM

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

You can now run 'bitbake <target>'

EOM
if [ -z "$OECORENOTESCONF" ]; then
    OECORENOTESCONF="$OEROOT/meta/conf/conf-notes.txt"
fi
[ ! -r "$OECORENOTESCONF" ] || cat $OECORENOTESCONF
unset OECORENOTESCONF