Mac/BuildScript/build-installer.py

#!/usr/bin/python2.3
"""
This script is used to build the "official unofficial" universal build on
Mac OS X. It requires Mac OS X 10.4, Xcode 2.2 and the 10.4u SDK to do its
work.

Please ensure that this script keeps working with Python 2.3, to avoid
bootstrap issues (/usr/bin/python is Python 2.3 on OSX 10.4)

Usage: see USAGE variable in the script.
"""
import platform, os, sys, getopt, textwrap, shutil, stat, time, pwd
import urllib.request
import grp

INCLUDE_TIMESTAMP = 1
VERBOSE = 1

from plistlib import Plist

import MacOS
import Carbon.File
import Carbon.Icn
import Carbon.Res
from Carbon.Files import kCustomIconResource, fsRdWrPerm, kHasCustomIcon
from Carbon.Files import kFSCatInfoFinderInfo

try:
    from plistlib import writePlist
except ImportError:
    # We're run using python2.3
    def writePlist(plist, path):
        plist.write(path)

def shellQuote(value):
    """
    Return the string value in a form that can safely be inserted into
    a shell command.
    """
    return "'%s'"%(value.replace("'", "'\"'\"'"))

def grepValue(fn, variable):
    variable = variable + '='
    for ln in open(fn, 'r'):
        if ln.startswith(variable):
            value = ln[len(variable):].strip()
            return value[1:-1]

def getVersion():
    return grepValue(os.path.join(SRCDIR, 'configure'), 'PACKAGE_VERSION')

def getFullVersion():
    fn = os.path.join(SRCDIR, 'Include', 'patchlevel.h')
    for ln in open(fn):
        if 'PY_VERSION' in ln:
            return ln.split()[-1][1:-1]

    raise RuntimeError("Cannot find full version??")

# The directory we'll use to create the build (will be erased and recreated)
WORKDIR = "/tmp/_py"

# The directory we'll use to store third-party sources. Set this to something
# else if you don't want to re-fetch required libraries every time.
DEPSRC = os.path.join(WORKDIR, 'third-party')
DEPSRC = os.path.expanduser('~/Universal/other-sources')

# Location of the preferred SDK
SDKPATH = "/Developer/SDKs/MacOSX10.4u.sdk"
#SDKPATH = "/"

ARCHLIST = ('i386', 'ppc',)

# Source directory (asume we're in Mac/BuildScript)
SRCDIR = os.path.dirname(
        os.path.dirname(
            os.path.dirname(
                os.path.abspath(__file__
        ))))

USAGE = textwrap.dedent("""\
    Usage: build_python [options]

    Options:
    -? or -h:            Show this message
    -b DIR
    --build-dir=DIR:     Create build here (default: %(WORKDIR)r)
    --third-party=DIR:   Store third-party sources here (default: %(DEPSRC)r)
    --sdk-path=DIR:      Location of the SDK (default: %(SDKPATH)r)
    --src-dir=DIR:       Location of the Python sources (default: %(SRCDIR)r)
""")% globals()


# Instructions for building libraries that are necessary for building a
# batteries included python.
LIBRARY_RECIPES = [
    dict(
        name="Bzip2 1.0.3",
        url="http://www.bzip.org/1.0.3/bzip2-1.0.3.tar.gz",
        configure=None,
        install='make install PREFIX=%s/usr/local/ CFLAGS="-arch %s -isysroot %s"'%(
            shellQuote(os.path.join(WORKDIR, 'libraries')),
            ' -arch '.join(ARCHLIST),
            SDKPATH,
        ),
    ),
    dict(
        name="ZLib 1.2.3",
        url="http://www.gzip.org/zlib/zlib-1.2.3.tar.gz",
        configure=None,
        install='make install prefix=%s/usr/local/ CFLAGS="-arch %s -isysroot %s"'%(
            shellQuote(os.path.join(WORKDIR, 'libraries')),
            ' -arch '.join(ARCHLIST),
            SDKPATH,
        ),
    ),
    dict(
        # Note that GNU readline is GPL'd software
        name="GNU Readline 5.1.4",
        url="http://ftp.gnu.org/pub/gnu/readline/readline-5.1.tar.gz" ,
        patchlevel='0',
        patches=[
            # The readline maintainers don't do actual micro releases, but
            # just ship a set of patches.
            'http://ftp.gnu.org/pub/gnu/readline/readline-5.1-patches/readline51-001',
            'http://ftp.gnu.org/pub/gnu/readline/readline-5.1-patches/readline51-002',
            'http://ftp.gnu.org/pub/gnu/readline/readline-5.1-patches/readline51-003',
            'http://ftp.gnu.org/pub/gnu/readline/readline-5.1-patches/readline51-004',
        ]
    ),

    dict(
        name="SQLite 3.6.3",
        url="http://www.sqlite.org/sqlite-3.6.3.tar.gz",
        checksum='93f742986e8bc2dfa34792e16df017a6feccf3a2',
        configure_pre=[
            '--enable-threadsafe',
            '--enable-tempstore',
            '--enable-shared=no',
            '--enable-static=yes',
            '--disable-tcl',
        ]
    ),

    dict(
        name="NCurses 5.5",
        url="http://ftp.gnu.org/pub/gnu/ncurses/ncurses-5.5.tar.gz",
        configure_pre=[
            "--without-cxx",
            "--without-ada",
            "--without-progs",
            "--without-curses-h",
            "--enable-shared",
            "--with-shared",
            "--datadir=/usr/share",
            "--sysconfdir=/etc",
            "--sharedstatedir=/usr/com",
            "--with-terminfo-dirs=/usr/share/terminfo",
            "--with-default-terminfo-dir=/usr/share/terminfo",
            "--libdir=/Library/Frameworks/Python.framework/Versions/%s/lib"%(getVersion(),),
            "--enable-termcap",
        ],
        patches=[
            "ncurses-5.5.patch",
        ],
        useLDFlags=False,
        install='make && make install DESTDIR=%s && cd %s/usr/local/lib && ln -fs ../../../Library/Frameworks/Python.framework/Versions/%s/lib/lib* .'%(
            shellQuote(os.path.join(WORKDIR, 'libraries')),
            shellQuote(os.path.join(WORKDIR, 'libraries')),
            getVersion(),
            ),
    ),
    dict(
        name="Sleepycat DB 4.7.25",
        url="http://download.oracle.com/berkeley-db/db-4.7.25.tar.gz",
        #name="Sleepycat DB 4.3.29",
        #url="http://downloads.sleepycat.com/db-4.3.29.tar.gz",
        buildDir="build_unix",
        configure="../dist/configure",
        configure_pre=[
            '--includedir=/usr/local/include/db4',
        ]
    ),
]


# Instructions for building packages inside the .mpkg.
PKG_RECIPES = [
    dict(
        name="PythonFramework",
        long_name="Python Framework",
        source="/Library/Frameworks/Python.framework",
        readme="""\
            This package installs Python.framework, that is the python
            interpreter and the standard library. This also includes Python
            wrappers for lots of Mac OS X API's.
        """,
        postflight="scripts/postflight.framework",
    ),
    dict(
        name="PythonApplications",
        long_name="GUI Applications",
        source="/Applications/Python %(VER)s",
        readme="""\
            This package installs IDLE (an interactive Python IDE),
            Python Launcher and Build Applet (create application bundles
            from python scripts).

            It also installs a number of examples and demos.
            """,
        required=False,
    ),
    dict(
        name="PythonUnixTools",
        long_name="UNIX command-line tools",
        source="/usr/local/bin",
        readme="""\
            This package installs the unix tools in /usr/local/bin for
            compatibility with older releases of MacPython. This package
            is not necessary to use MacPython.
            """,
        required=False,
    ),
    dict(
        name="PythonDocumentation",
        long_name="Python Documentation",
        topdir="/Library/Frameworks/Python.framework/Versions/%(VER)s/Resources/English.lproj/Documentation",
        source="/pydocs",
        readme="""\
            This package installs the python documentation at a location
            that is useable for pydoc and IDLE. If you have installed Xcode
            it will also install a link to the documentation in
            /Developer/Documentation/Python
            """,
        postflight="scripts/postflight.documentation",
        required=False,
    ),
    dict(
        name="PythonProfileChanges",
        long_name="Shell profile updater",
        readme="""\
            This packages updates your shell profile to make sure that
            the MacPython tools are found by your shell in preference of
            the system provided Python tools.

            If you don't install this package you'll have to add
            "/Library/Frameworks/Python.framework/Versions/%(VER)s/bin"
            to your PATH by hand.
            """,
        postflight="scripts/postflight.patch-profile",
        topdir="/Library/Frameworks/Python.framework",
        source="/empty-dir",
        required=False,
    ),
    dict(
        name="PythonSystemFixes",
        long_name="Fix system Python",
        readme="""\
            This package updates the system python installation on
            Mac OS X 10.3 to ensure that you can build new python extensions
            using that copy of python after installing this version.
            """,
        postflight="../Tools/fixapplepython23.py",
        topdir="/Library/Frameworks/Python.framework",
        source="/empty-dir",
        required=False,
    )
]

def fatal(msg):
    """
    A fatal error, bail out.
    """
    sys.stderr.write('FATAL: ')
    sys.stderr.write(msg)
    sys.stderr.write('\n')
    sys.exit(1)

def fileContents(fn):
    """
    Return the contents of the named file
    """
    return open(fn, 'rb').read()

def runCommand(commandline):
    """
    Run a command and raise RuntimeError if it fails. Output is surpressed
    unless the command fails.
    """
    fd = os.popen(commandline, 'r')
    data = fd.read()
    xit = fd.close()
    if xit is not None:
        sys.stdout.write(data)
        raise RuntimeError("command failed: %s"%(commandline,))

    if VERBOSE:
        sys.stdout.write(data); sys.stdout.flush()

def captureCommand(commandline):
    fd = os.popen(commandline, 'r')
    data = fd.read()
    xit = fd.close()
    if xit is not None:
        sys.stdout.write(data)
        raise RuntimeError("command failed: %s"%(commandline,))

    return data

def checkEnvironment():
    """
    Check that we're running on a supported system.
    """

    if platform.system() != 'Darwin':
        fatal("This script should be run on a Mac OS X 10.4 system")

    if platform.release() <= '8.':
        fatal("This script should be run on a Mac OS X 10.4 system")

    if not os.path.exists(SDKPATH):
        fatal("Please install the latest version of Xcode and the %s SDK"%(
            os.path.basename(SDKPATH[:-4])))



def parseOptions(args=None):
    """
    Parse arguments and update global settings.
    """
    global WORKDIR, DEPSRC, SDKPATH, SRCDIR

    if args is None:
        args = sys.argv[1:]

    try:
        options, args = getopt.getopt(args, '?hb',
                [ 'build-dir=', 'third-party=', 'sdk-path=' , 'src-dir='])
    except getopt.error as msg:
        print(msg)
        sys.exit(1)

    if args:
        print("Additional arguments")
        sys.exit(1)

    for k, v in options:
        if k in ('-h', '-?'):
            print(USAGE)
            sys.exit(0)

        elif k in ('-d', '--build-dir'):
            WORKDIR=v

        elif k in ('--third-party',):
            DEPSRC=v

        elif k in ('--sdk-path',):
            SDKPATH=v

        elif k in ('--src-dir',):
            SRCDIR=v

        else:
            raise NotImplementedError(k)

    SRCDIR=os.path.abspath(SRCDIR)
    WORKDIR=os.path.abspath(WORKDIR)
    SDKPATH=os.path.abspath(SDKPATH)
    DEPSRC=os.path.abspath(DEPSRC)

    print("Settings:")
    print(" * Source directory:", SRCDIR)
    print(" * Build directory: ", WORKDIR)
    print(" * SDK location:    ", SDKPATH)
    print(" * third-party source:", DEPSRC)
    print("")




def extractArchive(builddir, archiveName):
    """
    Extract a source archive into 'builddir'. Returns the path of the
    extracted archive.

    XXX: This function assumes that archives contain a toplevel directory
    that is has the same name as the basename of the archive. This is
    save enough for anything we use.
    """
    curdir = os.getcwd()
    try:
        os.chdir(builddir)
        if archiveName.endswith('.tar.gz'):
            retval = os.path.basename(archiveName[:-7])
            if os.path.exists(retval):
                shutil.rmtree(retval)
            fp = os.popen("tar zxf %s 2>&1"%(shellQuote(archiveName),), 'r')

        elif archiveName.endswith('.tar.bz2'):
            retval = os.path.basename(archiveName[:-8])
            if os.path.exists(retval):
                shutil.rmtree(retval)
            fp = os.popen("tar jxf %s 2>&1"%(shellQuote(archiveName),), 'r')

        elif archiveName.endswith('.tar'):
            retval = os.path.basename(archiveName[:-4])
            if os.path.exists(retval):
                shutil.rmtree(retval)
            fp = os.popen("tar xf %s 2>&1"%(shellQuote(archiveName),), 'r')

        elif archiveName.endswith('.zip'):
            retval = os.path.basename(archiveName[:-4])
            if os.path.exists(retval):
                shutil.rmtree(retval)
            fp = os.popen("unzip %s 2>&1"%(shellQuote(archiveName),), 'r')

        data = fp.read()
        xit = fp.close()
        if xit is not None:
            sys.stdout.write(data)
            raise RuntimeError("Cannot extract %s"%(archiveName,))

        return os.path.join(builddir, retval)

    finally:
        os.chdir(curdir)

KNOWNSIZES = {
    "http://ftp.gnu.org/pub/gnu/readline/readline-5.1.tar.gz": 7952742,
    "http://downloads.sleepycat.com/db-4.4.20.tar.gz": 2030276,
}

def downloadURL(url, fname):
    """
    Download the contents of the url into the file.
    """
    try:
        size = os.path.getsize(fname)
    except OSError:
        pass
    else:
        if KNOWNSIZES.get(url) == size:
            print("Using existing file for", url)
            return
    fpIn = urllib.request.urlopen(url)
    fpOut = open(fname, 'wb')
    block = fpIn.read(10240)
    try:
        while block:
            fpOut.write(block)
            block = fpIn.read(10240)
        fpIn.close()
        fpOut.close()
    except:
        try:
            os.unlink(fname)
        except:
            pass

def buildRecipe(recipe, basedir, archList):
    """
    Build software using a recipe. This function does the
    'configure;make;make install' dance for C software, with a possibility
    to customize this process, basically a poor-mans DarwinPorts.
    """
    curdir = os.getcwd()

    name = recipe['name']
    url = recipe['url']
    configure = recipe.get('configure', './configure')
    install = recipe.get('install', 'make && make install DESTDIR=%s'%(
        shellQuote(basedir)))

    archiveName = os.path.split(url)[-1]
    sourceArchive = os.path.join(DEPSRC, archiveName)

    if not os.path.exists(DEPSRC):
        os.mkdir(DEPSRC)


    if os.path.exists(sourceArchive):
        print("Using local copy of %s"%(name,))

    else:
        print("Downloading %s"%(name,))
        downloadURL(url, sourceArchive)
        print("Archive for %s stored as %s"%(name, sourceArchive))

    print("Extracting archive for %s"%(name,))
    buildDir=os.path.join(WORKDIR, '_bld')
    if not os.path.exists(buildDir):
        os.mkdir(buildDir)

    workDir = extractArchive(buildDir, sourceArchive)
    os.chdir(workDir)
    if 'buildDir' in recipe:
        os.chdir(recipe['buildDir'])


    for fn in recipe.get('patches', ()):
        if fn.startswith('http://'):
            # Download the patch before applying it.
            path = os.path.join(DEPSRC, os.path.basename(fn))
            downloadURL(fn, path)
            fn = path

        fn = os.path.join(curdir, fn)
        runCommand('patch -p%s < %s'%(recipe.get('patchlevel', 1),
            shellQuote(fn),))

    if configure is not None:
        configure_args = [
            "--prefix=/usr/local",
            "--enable-static",
            "--disable-shared",
            #"CPP=gcc -arch %s -E"%(' -arch '.join(archList,),),
        ]

        if 'configure_pre' in recipe:
            args = list(recipe['configure_pre'])
            if '--disable-static' in args:
                configure_args.remove('--enable-static')
            if '--enable-shared' in args:
                configure_args.remove('--disable-shared')
            configure_args.extend(args)

        if recipe.get('useLDFlags', 1):
            configure_args.extend([
                "CFLAGS=-arch %s -isysroot %s -I%s/usr/local/include"%(
                        ' -arch '.join(archList),
                        shellQuote(SDKPATH)[1:-1],
                        shellQuote(basedir)[1:-1],),
                "LDFLAGS=-syslibroot,%s -L%s/usr/local/lib -arch %s"%(
                    shellQuote(SDKPATH)[1:-1],
                    shellQuote(basedir)[1:-1],
                    ' -arch '.join(archList)),
            ])
        else:
            configure_args.extend([
                "CFLAGS=-arch %s -isysroot %s -I%s/usr/local/include"%(
                        ' -arch '.join(archList),
                        shellQuote(SDKPATH)[1:-1],
                        shellQuote(basedir)[1:-1],),
            ])

        if 'configure_post' in recipe:
            configure_args = configure_args = list(recipe['configure_post'])

        configure_args.insert(0, configure)
        configure_args = [ shellQuote(a) for a in configure_args ]

        print("Running configure for %s"%(name,))
        runCommand(' '.join(configure_args) + ' 2>&1')

    print("Running install for %s"%(name,))
    runCommand('{ ' + install + ' ;} 2>&1')

    print("Done %s"%(name,))
    print("")

    os.chdir(curdir)

def buildLibraries():
    """
    Build our dependencies into $WORKDIR/libraries/usr/local
    """
    print("")
    print("Building required libraries")
    print("")
    universal = os.path.join(WORKDIR, 'libraries')
    os.mkdir(universal)
    os.makedirs(os.path.join(universal, 'usr', 'local', 'lib'))
    os.makedirs(os.path.join(universal, 'usr', 'local', 'include'))

    for recipe in LIBRARY_RECIPES:
        buildRecipe(recipe, universal, ARCHLIST)



def buildPythonDocs():
    # This stores the documentation as Resources/English.lproj/Docuentation
    # inside the framwork. pydoc and IDLE will pick it up there.
    print("Install python documentation")
    rootDir = os.path.join(WORKDIR, '_root')
    version = getVersion()
    docdir = os.path.join(rootDir, 'pydocs')

    novername = 'python-docs-html.tar.bz2'
    name = 'html-%s.tar.bz2'%(getFullVersion(),)
    sourceArchive = os.path.join(DEPSRC, name)
    if os.path.exists(sourceArchive):
        print("Using local copy of %s"%(name,))

    else:
        print "Downloading %s"%(novername,)
        downloadURL('http://www.python.org/ftp/python/doc/%s/%s'%(
            getFullVersion(), novername), sourceArchive)
        print("Archive for %s stored as %s"%(name, sourceArchive))

    extractArchive(os.path.dirname(docdir), sourceArchive)

    os.rename(
            os.path.join(
                os.path.dirname(docdir), 'python-docs-html'),
            docdir)


def buildPython():
    print("Building a universal python")

    buildDir = os.path.join(WORKDIR, '_bld', 'python')
    rootDir = os.path.join(WORKDIR, '_root')

    if os.path.exists(buildDir):
        shutil.rmtree(buildDir)
    if os.path.exists(rootDir):
        shutil.rmtree(rootDir)
    os.mkdir(buildDir)
    os.mkdir(rootDir)
    os.mkdir(os.path.join(rootDir, 'empty-dir'))
    curdir = os.getcwd()
    os.chdir(buildDir)

    # Not sure if this is still needed, the original build script
    # claims that parts of the install assume python.exe exists.
    os.symlink('python', os.path.join(buildDir, 'python.exe'))

    # Extract the version from the configure file, needed to calculate
    # several paths.
    version = getVersion()

    print("Running configure...")
    runCommand("%s -C --enable-framework --enable-universalsdk=%s LDFLAGS='-g -L%s/libraries/usr/local/lib' OPT='-g -O3 -I%s/libraries/usr/local/include' 2>&1"%(
        shellQuote(os.path.join(SRCDIR, 'configure')),
        shellQuote(SDKPATH), shellQuote(WORKDIR)[1:-1],
        shellQuote(WORKDIR)[1:-1]))

    print("Running make")
    runCommand("make")

    print("Running make frameworkinstall")
    runCommand("make frameworkinstall DESTDIR=%s"%(
        shellQuote(rootDir)))

    print("Running make frameworkinstallextras")
    runCommand("make frameworkinstallextras DESTDIR=%s"%(
        shellQuote(rootDir)))

    print("Copying required shared libraries")
    if os.path.exists(os.path.join(WORKDIR, 'libraries', 'Library')):
        runCommand("mv %s/* %s"%(
            shellQuote(os.path.join(
                WORKDIR, 'libraries', 'Library', 'Frameworks',
                'Python.framework', 'Versions', getVersion(),
                'lib')),
            shellQuote(os.path.join(WORKDIR, '_root', 'Library', 'Frameworks',
                'Python.framework', 'Versions', getVersion(),
                'lib'))))

    print("Fix file modes")
    frmDir = os.path.join(rootDir, 'Library', 'Frameworks', 'Python.framework')
    gid = grp.getgrnam('admin').gr_gid

    for dirpath, dirnames, filenames in os.walk(frmDir):
        for dn in dirnames:
            os.chmod(os.path.join(dirpath, dn), 0775)
            os.chown(os.path.join(dirpath, dn), -1, gid)


        for fn in filenames:
            if os.path.islink(fn):
                continue

            # "chmod g+w $fn"
            p = os.path.join(dirpath, fn)
            st = os.stat(p)
            os.chmod(p, stat.S_IMODE(st.st_mode) | stat.S_IWGRP)
            os.chown(p, -1, gid)

    # We added some directories to the search path during the configure
    # phase. Remove those because those directories won't be there on
    # the end-users system.
    path =os.path.join(rootDir, 'Library', 'Frameworks', 'Python.framework',
                'Versions', version, 'lib', 'python%s'%(version,),
                'config', 'Makefile')
    fp = open(path, 'r')
    data = fp.read()
    fp.close()

    data = data.replace('-L%s/libraries/usr/local/lib'%(WORKDIR,), '')
    data = data.replace('-I%s/libraries/usr/local/include'%(WORKDIR,), '')
    fp = open(path, 'w')
    fp.write(data)
    fp.close()

    # Add symlinks in /usr/local/bin, using relative links
    usr_local_bin = os.path.join(rootDir, 'usr', 'local', 'bin')
    to_framework = os.path.join('..', '..', '..', 'Library', 'Frameworks',
            'Python.framework', 'Versions', version, 'bin')
    if os.path.exists(usr_local_bin):
        shutil.rmtree(usr_local_bin)
    os.makedirs(usr_local_bin)
    for fn in os.listdir(
                os.path.join(frmDir, 'Versions', version, 'bin')):
        os.symlink(os.path.join(to_framework, fn),
                   os.path.join(usr_local_bin, fn))

    os.chdir(curdir)



def patchFile(inPath, outPath):
    data = fileContents(inPath)
    data = data.replace('$FULL_VERSION', getFullVersion())
    data = data.replace('$VERSION', getVersion())
    data = data.replace('$MACOSX_DEPLOYMENT_TARGET', '10.3 or later')
    data = data.replace('$ARCHITECTURES', "i386, ppc")
    data = data.replace('$INSTALL_SIZE', installSize())

    # This one is not handy as a template variable
    data = data.replace('$PYTHONFRAMEWORKINSTALLDIR', '/Library/Frameworks/Python.framework')
    fp = open(outPath, 'wb')
    fp.write(data)
    fp.close()

def patchScript(inPath, outPath):
    data = fileContents(inPath)
    data = data.replace('@PYVER@', getVersion())
    fp = open(outPath, 'wb')
    fp.write(data)
    fp.close()
    os.chmod(outPath, 0755)



def packageFromRecipe(targetDir, recipe):
    curdir = os.getcwd()
    try:
        # The major version (such as 2.5) is included in the package name
        # because having two version of python installed at the same time is
        # common.
        pkgname = '%s-%s'%(recipe['name'], getVersion())
        srcdir  = recipe.get('source')
        pkgroot = recipe.get('topdir', srcdir)
        postflight = recipe.get('postflight')
        readme = textwrap.dedent(recipe['readme'])
        isRequired = recipe.get('required', True)

        print("- building package %s"%(pkgname,))

        # Substitute some variables
        textvars = dict(
            VER=getVersion(),
            FULLVER=getFullVersion(),
        )
        readme = readme % textvars

        if pkgroot is not None:
            pkgroot = pkgroot % textvars
        else:
            pkgroot = '/'

        if srcdir is not None:
            srcdir = os.path.join(WORKDIR, '_root', srcdir[1:])
            srcdir = srcdir % textvars

        if postflight is not None:
            postflight = os.path.abspath(postflight)

        packageContents = os.path.join(targetDir, pkgname + '.pkg', 'Contents')
        os.makedirs(packageContents)

        if srcdir is not None:
            os.chdir(srcdir)
            runCommand("pax -wf %s . 2>&1"%(shellQuote(os.path.join(packageContents, 'Archive.pax')),))
            runCommand("gzip -9 %s 2>&1"%(shellQuote(os.path.join(packageContents, 'Archive.pax')),))
            runCommand("mkbom . %s 2>&1"%(shellQuote(os.path.join(packageContents, 'Archive.bom')),))

        fn = os.path.join(packageContents, 'PkgInfo')
        fp = open(fn, 'w')
        fp.write('pmkrpkg1')
        fp.close()

        rsrcDir = os.path.join(packageContents, "Resources")
        os.mkdir(rsrcDir)
        fp = open(os.path.join(rsrcDir, 'ReadMe.txt'), 'w')
        fp.write(readme)
        fp.close()

        if postflight is not None:
            patchScript(postflight, os.path.join(rsrcDir, 'postflight'))

        vers = getFullVersion()
        major, minor = map(int, getVersion().split('.', 2))
        pl = Plist(
                CFBundleGetInfoString="MacPython.%s %s"%(pkgname, vers,),
                CFBundleIdentifier='org.python.MacPython.%s'%(pkgname,),
                CFBundleName='MacPython.%s'%(pkgname,),
                CFBundleShortVersionString=vers,
                IFMajorVersion=major,
                IFMinorVersion=minor,
                IFPkgFormatVersion=0.10000000149011612,
                IFPkgFlagAllowBackRev=False,
                IFPkgFlagAuthorizationAction="RootAuthorization",
                IFPkgFlagDefaultLocation=pkgroot,
                IFPkgFlagFollowLinks=True,
                IFPkgFlagInstallFat=True,
                IFPkgFlagIsRequired=isRequired,
                IFPkgFlagOverwritePermissions=False,
                IFPkgFlagRelocatable=False,
                IFPkgFlagRestartAction="NoRestart",
                IFPkgFlagRootVolumeOnly=True,
                IFPkgFlagUpdateInstalledLangauges=False,
            )
        writePlist(pl, os.path.join(packageContents, 'Info.plist'))

        pl = Plist(
                    IFPkgDescriptionDescription=readme,
                    IFPkgDescriptionTitle=recipe.get('long_name', "MacPython.%s"%(pkgname,)),
                    IFPkgDescriptionVersion=vers,
                )
        writePlist(pl, os.path.join(packageContents, 'Resources', 'Description.plist'))

    finally:
        os.chdir(curdir)


def makeMpkgPlist(path):

    vers = getFullVersion()
    major, minor = map(int, getVersion().split('.', 2))

    pl = Plist(
            CFBundleGetInfoString="MacPython %s"%(vers,),
            CFBundleIdentifier='org.python.MacPython',
            CFBundleName='MacPython',
            CFBundleShortVersionString=vers,
            IFMajorVersion=major,
            IFMinorVersion=minor,
            IFPkgFlagComponentDirectory="Contents/Packages",
            IFPkgFlagPackageList=[
                dict(
                    IFPkgFlagPackageLocation='%s-%s.pkg'%(item['name'], getVersion()),
                    IFPkgFlagPackageSelection='selected'
                )
                for item in PKG_RECIPES
            ],
            IFPkgFormatVersion=0.10000000149011612,
            IFPkgFlagBackgroundScaling="proportional",
            IFPkgFlagBackgroundAlignment="left",
            IFPkgFlagAuthorizationAction="RootAuthorization",
        )

    writePlist(pl, path)


def buildInstaller():

    # Zap all compiled files
    for dirpath, _, filenames in os.walk(os.path.join(WORKDIR, '_root')):
        for fn in filenames:
            if fn.endswith('.pyc') or fn.endswith('.pyo'):
                os.unlink(os.path.join(dirpath, fn))

    outdir = os.path.join(WORKDIR, 'installer')
    if os.path.exists(outdir):
        shutil.rmtree(outdir)
    os.mkdir(outdir)

    pkgroot = os.path.join(outdir, 'MacPython.mpkg', 'Contents')
    pkgcontents = os.path.join(pkgroot, 'Packages')
    os.makedirs(pkgcontents)
    for recipe in PKG_RECIPES:
        packageFromRecipe(pkgcontents, recipe)

    rsrcDir = os.path.join(pkgroot, 'Resources')

    fn = os.path.join(pkgroot, 'PkgInfo')
    fp = open(fn, 'w')
    fp.write('pmkrpkg1')
    fp.close()

    os.mkdir(rsrcDir)

    makeMpkgPlist(os.path.join(pkgroot, 'Info.plist'))
    pl = Plist(
                IFPkgDescriptionTitle="Universal MacPython",
                IFPkgDescriptionVersion=getVersion(),
            )

    writePlist(pl, os.path.join(pkgroot, 'Resources', 'Description.plist'))
    for fn in os.listdir('resources'):
        if fn == '.svn': continue
        if fn.endswith('.jpg'):
            shutil.copy(os.path.join('resources', fn), os.path.join(rsrcDir, fn))
        else:
            patchFile(os.path.join('resources', fn), os.path.join(rsrcDir, fn))

    shutil.copy("../../LICENSE", os.path.join(rsrcDir, 'License.txt'))


def installSize(clear=False, _saved=[]):
    if clear:
        del _saved[:]
    if not _saved:
        data = captureCommand("du -ks %s"%(
                    shellQuote(os.path.join(WORKDIR, '_root'))))
        _saved.append("%d"%((0.5 + (int(data.split()[0]) / 1024.0)),))
    return _saved[0]


def buildDMG():
    """
    Create DMG containing the rootDir.
    """
    outdir = os.path.join(WORKDIR, 'diskimage')
    if os.path.exists(outdir):
        shutil.rmtree(outdir)

    imagepath = os.path.join(outdir,
                    'python-%s-macosx'%(getFullVersion(),))
    if INCLUDE_TIMESTAMP:
        imagepath = imagepath + '%04d-%02d-%02d'%(time.localtime()[:3])
    imagepath = imagepath + '.dmg'

    os.mkdir(outdir)
    runCommand("hdiutil create -volname 'Universal MacPython %s' -srcfolder %s %s"%(
            getFullVersion(),
            shellQuote(os.path.join(WORKDIR, 'installer')),
            shellQuote(imagepath)))

    return imagepath


def setIcon(filePath, icnsPath):
    """
    Set the custom icon for the specified file or directory.

    For a directory the icon data is written in a file named 'Icon\r' inside
    the directory. For both files and directories write the icon as an 'icns'
    resource. Furthermore set kHasCustomIcon in the finder flags for filePath.
    """
    ref, isDirectory = Carbon.File.FSPathMakeRef(icnsPath)
    icon = Carbon.Icn.ReadIconFile(ref)
    del ref

    #
    # Open the resource fork of the target, to add the icon later on.
    # For directories we use the file 'Icon\r' inside the directory.
    #

    ref, isDirectory = Carbon.File.FSPathMakeRef(filePath)

    if isDirectory:
        # There is a problem with getting this into the pax(1) archive,
        # just ignore directory icons for now.
        return

        tmpPath = os.path.join(filePath, "Icon\r")
        if not os.path.exists(tmpPath):
            fp = open(tmpPath, 'w')
            fp.close()

        tmpRef, _ = Carbon.File.FSPathMakeRef(tmpPath)
        spec = Carbon.File.FSSpec(tmpRef)

    else:
        spec = Carbon.File.FSSpec(ref)

    try:
        Carbon.Res.HCreateResFile(*spec.as_tuple())
    except MacOS.Error:
        pass

    # Try to create the resource fork again, this will avoid problems
    # when adding an icon to a directory. I have no idea why this helps,
    # but without this adding the icon to a directory will fail sometimes.
    try:
        Carbon.Res.HCreateResFile(*spec.as_tuple())
    except MacOS.Error:
        pass

    refNum = Carbon.Res.FSpOpenResFile(spec, fsRdWrPerm)

    Carbon.Res.UseResFile(refNum)

    # Check if there already is an icon, remove it if there is.
    try:
        h = Carbon.Res.Get1Resource('icns', kCustomIconResource)
    except MacOS.Error:
        pass

    else:
        h.RemoveResource()
        del h

    # Add the icon to the resource for of the target
    res = Carbon.Res.Resource(icon)
    res.AddResource('icns', kCustomIconResource, '')
    res.WriteResource()
    res.DetachResource()
    Carbon.Res.CloseResFile(refNum)

    # And now set the kHasCustomIcon property for the target. Annoyingly,
    # python doesn't seem to have bindings for the API that is needed for
    # this. Cop out and call SetFile
    os.system("/Developer/Tools/SetFile -a C %s"%(
            shellQuote(filePath),))

    if isDirectory:
        os.system('/Developer/Tools/SetFile -a V %s'%(
            shellQuote(tmpPath),
        ))

def main():
    # First parse options and check if we can perform our work
    parseOptions()
    checkEnvironment()

    os.environ['MACOSX_DEPLOYMENT_TARGET'] = '10.3'

    if os.path.exists(WORKDIR):
        shutil.rmtree(WORKDIR)
    os.mkdir(WORKDIR)

    # Then build third-party libraries such as sleepycat DB4.
    buildLibraries()

    # Now build python itself
    buildPython()
    buildPythonDocs()
    fn = os.path.join(WORKDIR, "_root", "Applications",
                "Python %s"%(getVersion(),), "Update Shell Profile.command")
    patchFile("scripts/postflight.patch-profile",  fn)
    os.chmod(fn, 0755)

    folder = os.path.join(WORKDIR, "_root", "Applications", "Python %s"%(
        getVersion(),))
    os.chmod(folder, 0755)
    setIcon(folder, "../Icons/Python Folder.icns")

    # Create the installer
    buildInstaller()

    # And copy the readme into the directory containing the installer
    patchFile('resources/ReadMe.txt', os.path.join(WORKDIR, 'installer', 'ReadMe.txt'))

    # Ditto for the license file.
    shutil.copy('../../LICENSE', os.path.join(WORKDIR, 'installer', 'License.txt'))

    fp = open(os.path.join(WORKDIR, 'installer', 'Build.txt'), 'w')
    print("# BUILD INFO", file=fp)
    print("# Date:", time.ctime(), file=fp)
    print("# By:", pwd.getpwuid(os.getuid()).pw_gecos, file=fp)
    fp.close()

    # Custom icon for the DMG, shown when the DMG is mounted.
    shutil.copy("../Icons/Disk Image.icns",
            os.path.join(WORKDIR, "installer", ".VolumeIcon.icns"))
    os.system("/Developer/Tools/SetFile -a C %s"%(
            os.path.join(WORKDIR, "installer", ".VolumeIcon.icns")))


    # And copy it to a DMG
    buildDMG()


if __name__ == "__main__":
    main()