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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

if [ "$1" = '--help' -o "$1" = '-h' ]; then
    echo 'Usage: oe-setup-builddir'
    echo ''
    echo "OpenEmbedded setup-builddir - setup build directory $BUILDDIR"
    echo ''
    exit 2
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

# Attempting removal of sticky,setuid bits from BUILDDIR, BUILDDIR/conf
chmod -st "$BUILDDIR" 2>/dev/null || echo "WARNING: unable to chmod $BUILDDIR"
chmod -st "$BUILDDIR/conf" 2>/dev/null || echo "WARNING: unable to chmod $BUILDDIR/conf"

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 value points to nonexistent directory '$TEMPLATECONF'"
            exit 1
        fi
    fi
    OECORELAYERCONF="$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, for
example, select a different MACHINE (target hardware). See conf/local.conf
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. This configuration file has therefore been
created for you with some default values. To add additional metadata layers
into your configuration please add entries to conf/bblayers.conf.

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

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