Script to extract components of Xcode 4.1 required to build VirtualBox on a OSX 10.9 system.

extract-xcode41.sh

#!/usr/bin/env bash
#
# NAME 
#    extract-xcode41.sh
#
# DESCRIPTION
#    1. Copy this file into the same directory that contains installxcode_41_lion.dmg downloaded from Apple
#    2. Change into that directory
#    3. Run the file
#          ./extract-xcode41.sh
#    4. Add --with-xcode-dir=$(pwd)/xcode41-partial to arguments of the ./configure command used to configure the VirtualBox build
#

DMG=${DMG:-installxcode_41_lion.dmg}
MNT=${MNT:-$(pwd)/mnt}
UNPACK=${UNPACK:-$(pwd)/unpack}
IMAGE=${IMAGE:-$(pwd)/xcode41-partial}
PACKAGES="DevSDK.pkg MacOSX10.6.pkg MacOSX10.7.pkg XcodeTools.pkg llvm-gcc4.2.pkg gcc4.2.pkg DeveloperTools.pkg"
die()
{
    echo "fatal: $*" 1>&2
    exit 1
}


main()
{
    cat 1>&2 <<EOF
DMG=$DMG
MNT=$MNT
UNPACK=$UNPACK
IMAGE=$IMAGE
EOF
    test -f "$DMG" || die "DMG=$DMG does not exist"
    mkdir -p "${MNT}" &&
    mkdir -p "${UNPACK}" &&
    mkdir -p "${IMAGE}/Developer/usr/share/man/man3" &&
    hdiutil mount "${DMG}" -mountpoint "${MNT}" &&
    cd "${UNPACK}" &&
    xar -xf "${MNT}/InstallXcodeLion.pkg" &&
    mkdir -p InstallXcodeLion.pkg/Payload.cpio &&
    cd InstallXcodeLion.pkg/Payload.cpio &&
    gzip -dc ../Payload | cpio -id &&
    cd "Applications/Install Xcode.app/Contents/Resources/Packages" &&
    for p in $PACKAGES
    do
	local u="$(basename "$p" .pkg).unpkg"
	mkdir -p "$u" && (
	    cd "$u"
	    xar -xf "../$p"
	    gzip -dc Payload | (cd "${IMAGE}/Developer"; cpio -id)
	) 
    done &&
    rm -rf "${UNPACK}" &&
    hdiutil detach "${MNT}" &&
    rmdir "${MNT}" &&
    echo "Successfully extracted parts of Xcode 4.1 required to build VirtualBox into '${IMAGE}'. Add --with-xcode-dir=${IMAGE} to ./configure arguments."
}

cmd=${1:-main}
shift 1

$cmd "$@"