oe-buildenv-internal for OSX

#!/bin/sh

# OE-Core 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

# It is assumed OEROOT is already defined when this is called
if [ -z "$OEROOT" ]; then
    echo >&2 "Error: OEROOT is not defined!"
    return 1
fi

if [ ! -z "$OECORE_SDK_VERSION" ]; then
    echo >&2 "Error: The OE SDK/ADT was detected as already being present in this shell environment. Please use a clean shell when sourcing this environment script."
    return 1
fi

if [ "x$BDIR" = "x" ]; then
    if [ "x$1" = "x" ]; then
        BDIR="build"
    else
        BDIR="$1"
        if [ "$BDIR" = "/" ]; then
            echo >&2 "Error: / is not supported as a build directory."
            return 1
        fi

        # Remove any possible trailing slashes. This is used to work around
        # buggy readlink in Ubuntu 10.04 that doesn't ignore trailing slashes
        # and hence "readlink -f new_dir_to_be_created/" returns
        # empty.
        if [[ "$OSTYPE" == *"darwin"* ]]; then
          BDIR=`echo $BDIR | sed -Ee 's|/+$||'`
        else
          BDIR=`echo $BDIR | sed -re 's|/+$||'`
        fi

        if [[ "$OSTYPE" != *"darwin"* ]]; then
          BDIR=`readlink -f "$BDIR"`
        fi

        if [ -z "$BDIR" ]; then
            PARENTDIR=`dirname "$1"`
            echo >&2 "Error: the directory $PARENTDIR does not exist?"
            return 1
        fi
    fi
    if [ "x$2" != "x" ]; then
        BITBAKEDIR="$2"
    fi
fi
if expr "$BDIR" : '/.*' > /dev/null ; then
    BUILDDIR="$BDIR"
else
    BUILDDIR="`pwd`/$BDIR"
fi
unset BDIR

if [ "x$BITBAKEDIR" = "x" ]; then
    BITBAKEDIR="$OEROOT/bitbake$BBEXTRA/"
fi

if [[ "$OSTYPE" != *"darwin"* ]]; then
  BITBAKEDIR=`readlink -f "$BITBAKEDIR"`
  BUILDDIR=`readlink -f "$BUILDDIR"`
else
  BITBAKEDIR=`dirname "$BITBAKEDIR"`
  BUILDDIR=`dirname  "$BUILDDIR"`
fi

if ! (test -d "$BITBAKEDIR"); then
    echo >&2 "Error: The bitbake directory ($BITBAKEDIR) does not exist!  Please ensure a copy of bitbake exists at this location"
    return 1
fi

# Make sure our paths are at the beginning of $PATH
NEWPATHS="${OEROOT}/scripts:$BITBAKEDIR/bin:"
PATH=$NEWPATHS$(echo $PATH | sed -e "s|:$NEWPATHS|:|g" -e "s|^$NEWPATHS||")
unset BITBAKEDIR NEWPATHS

# Used by the runqemu script
export BUILDDIR
export PATH
export BB_ENV_EXTRAWHITE="MACHINE DISTRO TCMODE TCLIBC HTTP_PROXY http_proxy \
HTTPS_PROXY https_proxy FTP_PROXY ftp_proxy FTPS_PROXY ftps_proxy ALL_PROXY \
all_proxy NO_PROXY no_proxy SSH_AGENT_PID SSH_AUTH_SOCK BB_SRCREV_POLICY \
SDKMACHINE BB_NUMBER_THREADS BB_NO_NETWORK PARALLEL_MAKE GIT_PROXY_COMMAND \
SOCKS5_PASSWD SOCKS5_USER SCREENDIR STAMPS_DIR"