"""
Some helper functions for building the C extensions

you may need to edit basedir to point to the default location of your
required libs, eg, png, z, freetype

DARWIN

  I have installed all of the backends on OSX.

  Tk: If you want to install TkAgg, I recommend the "batteries included"
  binary build of Tcl/Tk at
  http://www.apple.com/downloads/macosx/unix_open_source/tcltkaqua.html

  GTK: I installed GTK from src as described at
  http://www.macgimp.org/index.php?topic=gtk.  There are several
  packages, but all configure/make/make install w/o problem.  In
  addition to the packages listed there, You will also need libpng,
  libjpeg, and libtiff if you want output to these formats from GTK.

WIN32 - MINGW

  If you are sufficiently masochistic that you want to build this
  yourself, download the win32_static dir from
  http://matplotlib.sourceforge.net/win32_static.tar.gz and
  see the README file in that dir

  > python setup.py build --compiler=mingw32 bdist_wininst  > build23.out

  NOTE, if you are building on python24 on win32, see
  http://mail.python.org/pipermail/python-list/2004-December/254826.html

WIN32 - VISUAL STUDIO 7.1 (2003)

  This build is similar to the mingw.  Download the visual studio static
  dependencies from
  http://matplotlib.sourceforge.net/win32_static_vs.tar.gz and
  see the README in that dir

  > python setup.py build bdist_wininst

"""

import os


basedir = {
    'win32'  : ['win32_static',],
    'linux2' : ['/usr/local', '/usr'],
    'linux'  : ['/usr/local', '/usr',],
    'cygwin' : ['/usr/local', '/usr',],
    'darwin' : ['/sw/lib/freetype2', '/sw/lib/freetype219', '/usr/local',
                '/usr', '/sw'],
    'freebsd4' : ['/usr/local', '/usr'],
    'freebsd5' : ['/usr/local', '/usr'],
    'freebsd6' : ['/usr/local', '/usr'],
    'sunos5' : [os.getenv('MPLIB_BASE') or '/usr/local',],
    'gnukfreebsd5' : ['/usr/local', '/usr'],
    'gnukfreebsd6' : ['/usr/local', '/usr'],
    'aix5' : ['/usr/local'],
}

import sys, os, stat
if sys.platform != 'win32':
    import commands
from sets import Set
from textwrap import fill
from distutils.core import Extension
import glob
import ConfigParser

major, minor1, minor2, s, tmp = sys.version_info
if major<2 or (major==2 and minor1<3):
    True = 1
    False = 0
else:
    True = True
    False = False

BUILT_AGG       = False
BUILT_FT2FONT   = False
BUILT_TTCONV    = False
BUILT_GTKAGG    = False
BUILT_IMAGE     = False
BUILT_TKAGG     = False
BUILT_WXAGG     = False
BUILT_WINDOWING = False
BUILT_CONTOUR   = False
BUILT_NXUTILS   = False
BUILT_TRAITS = False
BUILT_CONTOUR   = False
BUILT_GDK       = False

AGG_VERSION = 'agg23'

# for nonstandard installation/build with --prefix variable
numpy_inc_dirs = []

# Based on the contents of setup.cfg, determine if the status block
# should be displayed
display_status = True
if os.path.exists("setup.cfg"):
    config = ConfigParser.SafeConfigParser()
    config.read("setup.cfg")
    try:
        if config.get("status", "suppress"):
            display_status = False
    except:
        pass

if display_status:
    def print_line(char='='):
        print char * 76

    def print_status(package, status):
        initial_indent = "%22s: " % package
        indent = ' ' * 24
        print fill(str(status), width=76,
                   initial_indent=initial_indent,
                   subsequent_indent=indent)

    def print_message(message):
        indent = ' ' * 24 + "* "
        print fill(str(message), width=76,
                   initial_indent=indent,
                   subsequent_indent=indent)

    def print_raw(section):
        print section
else:
    def print_line(*args, **kwargs):
        pass
    print_status = print_message = print_raw = print_line

class CleanUpFile:
    """CleanUpFile deletes the specified filename when self is destroyed."""
    def __init__(self, name):
        self.name = name
    def __del__(self):
        os.remove(self.name)

def temp_copy(_from, _to):
    """temp_copy copies a named file into a named temporary file.
    The temporary will be deleted when the setupext module is destructed.
    """
    # Copy the file data from _from to _to
    s = open(_from).read()
    open(_to,"w+").write(s)
    # Suppress object rebuild by preserving time stamps.
    stats = os.stat(_from)
    os.utime(_to, (stats.st_atime, stats.st_mtime))
    # Make an object to eliminate the temporary file at exit time.
    globals()["_cleanup_"+_to] = CleanUpFile(_to)

def get_win32_compiler():
    # Used to determine mingw32 or msvc
    # This is pretty bad logic, someone know a better way?
    for v in sys.argv:
        if 'mingw32' in v:
            return 'mingw32'
    return 'msvc'
win32_compiler = get_win32_compiler()
if sys.platform == 'win32' and win32_compiler == 'msvc':
    std_libs = []
else:
    std_libs = ['stdc++', 'm']

def has_pkgconfig():
    if has_pkgconfig.cache is not None:
        return has_pkgconfig.cache
    if sys.platform == 'win32':
        has_pkgconfig.cache = False
    else:
        #print 'environ',  os.environ['PKG_CONFIG_PATH']
        status, output = commands.getstatusoutput("pkg-config --help")
        has_pkgconfig.cache = (status == 0)
    return has_pkgconfig.cache
has_pkgconfig.cache = None

def get_pkgconfig(module,
                  packages,
                  flags="--libs --cflags",
                  pkg_config_exec='pkg-config'):
    """Loosely based on an article in the Python Cookbook:
    http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/502261"""
    if not has_pkgconfig():
        return False

    _flags = {'-I': 'include_dirs',
              '-L': 'library_dirs',
              '-l': 'libraries',
              '-D': 'define_macros',
              '-U': 'undef_macros'}

    status, output = commands.getstatusoutput(
        "%s %s %s" % (pkg_config_exec, flags, packages))
    #if packages.startswith('pygtk'):
    #    print 'status', status, output
    #    raise SystemExit
    if status == 0:
        for token in output.split():
            attr = _flags.get(token[:2], None)
            if attr is not None:
                if token[:2] == '-D':
                    value = tuple(token[2:].split('='))
                    if len(value) == 1:
                        value = (value[0], None)
                else:
                    value = token[2:]
                set = getattr(module, attr)
                if value not in set:
                    set.append(value)
            else:
                if token not in module.extra_link_args:
                    module.extra_link_args.append(token)
        return True
    return False

def get_pkgconfig_version(package):
    default = "found, but unknown version (no pkg-config)"
    if not has_pkgconfig():
        return default

    status, output = commands.getstatusoutput(
        "pkg-config %s --modversion" % (package))
    if status == 0:
        return output
    return default

def try_pkgconfig(module, package, fallback):
    if not get_pkgconfig(module, package):
        module.libraries.append(fallback)

def find_include_file(include_dirs, filename):
    for d in include_dirs:
        if os.path.exists(os.path.join(d, filename)):
            return True
    return False

def check_for_freetype():
    module = Extension('test', [])
    add_base_flags(module)
    if not get_pkgconfig(module, 'freetype2'):
        basedirs = module.include_dirs[:]  # copy the list to avoid inf loop!
        for d in basedirs:
            module.include_dirs.append(os.path.join(d, 'freetype2'))

    print_status("freetype2", get_pkgconfig_version('freetype2'))
    if not find_include_file(module.include_dirs, 'ft2build.h'):
        print_message(
            "WARNING: Could not find 'freetype2' headers in any of %s." %
            ", ".join(["'%s'" % x for x in module.include_dirs]))

    return True

def check_for_libpng():
    module = Extension("test", [])
    get_pkgconfig(module, 'libpng')
    add_base_flags(module)

    print_status("libpng", get_pkgconfig_version('libpng'))
    if not find_include_file(module.include_dirs, 'png.h'):
        print_message(
            "Could not find 'libpng' headers in any of %s" %
            ", ".join(["'%s'" % x for x in module.include_dirs]))

    return True

def add_base_flags(module):
    incdirs = filter(os.path.exists,
                     [os.path.join(p, 'include') for p in basedir[sys.platform] ])
    libdirs = filter(os.path.exists,
                     [os.path.join(p, 'lib')     for p in basedir[sys.platform] ]+
                     [os.path.join(p, 'lib64')     for p in basedir[sys.platform] ] )

    module.include_dirs.extend(incdirs)
    module.include_dirs.append('.')
    module.library_dirs.extend(libdirs)

def getoutput(s):
    'get the output of a system command'

    ret =  os.popen(s).read().strip()
    return ret

def convert_qt_version(version):
    version = '%x'%version
    temp = []
    while len(version) > 0:
        version, chunk = version[:-2], version[-2:]
        temp.insert(0, str(int(chunk, 16)))
    return '.'.join(temp)

def check_for_qt():
    try:
        import pyqtconfig
    except ImportError:
        print_status("Qt", "no")
        return False
    else:
        print_status("Qt", "Qt: %s, pyqt: %s" %
                     (convert_qt_version(pyqtconfig.Configuration().qt_version),
                      pyqtconfig.Configuration().pyqt_version_str))
        return True

def check_for_qt4():
    try:
        from PyQt4 import pyqtconfig
    except ImportError:
        print_status("Qt4", "no")
        return False
    else:
        print_status("Qt4", "Qt: %s, pyqt: %s" %
                     (convert_qt_version(pyqtconfig.Configuration().qt_version),
                      pyqtconfig.Configuration().pyqt_version_str))
        return True

def check_for_cairo():
    try:
        import cairo
    except ImportError:
        print_status("Cairo", "no")
        return False
    else:
        print_status("Cairo", cairo.version)
        return True

def check_for_pytz():
    try:
        import pytz
    except ImportError:
        print_status("pytz", "mpl-provided")
        return False
    else:
        print_status("pytz", pytz.__version__)
        return True

def check_for_dateutil():
    try:
        import dateutil
    except ImportError:
        print_status("dateutil", "mpl-provided")
        return False
    else:
        try:
            print_status("dateutil", dateutil.__version__)
        except AttributeError:
            print_status("dateutil", "present, version unknown")
        return True

def check_for_configobj():
    try:
        import configobj
    except ImportError:
        print_status("configobj", "mpl-provided")
        return False
    else:
        print_status("configobj", configobj.__version__)
        return True

def check_for_traits():
    gotit = False
    try:
        from enthought import traits
        gotit = True
        try:
            from enthought.traits import version
        except:
            print_status("enthought.traits", "unknown and incompatible version: < 2.0")
            return gotit
        else:
            if version.version.endswith('mpl'): gotit = False
            print_status("enthought.traits", version.version)
    except ImportError:
        print_status("enthought.traits", "no")
    return gotit

def check_for_numpy():
    gotit = False
    try:
        import numpy
    except ImportError:
        print_status("numpy", "no")
        print_message("You must install numpy to build matplotlib.")
        return False
    module = Extension('test', [])
    add_numpy_flags(module)
    add_base_flags(module)

    print_status("numpy", numpy.__version__)
    if not find_include_file(module.include_dirs, os.path.join("numpy", "arrayobject.h")):
        print_message("Could not find the headers for numpy.  You may need to install the development package.")
    return True

def add_numpy_flags(module):
    "Add the modules flags to build extensions which use numpy"
    import numpy
    # TODO: Remove this try statement when it is no longer needed
    try:
        module.include_dirs.append(numpy.get_include())
    except AttributeError:
        module.include_dirs.append(numpy.get_numpy_include())

def add_agg_flags(module):
    'Add the module flags to build extensions which use agg'

    # before adding the freetype flags since -z comes later
    try_pkgconfig(module, 'libpng', 'png')
    module.libraries.append('z')
    add_base_flags(module)
    module.include_dirs.extend(['src','swig', '%s/include'%AGG_VERSION, '.'])

    # put these later for correct link order
    module.libraries.extend(std_libs)

def add_ft2font_flags(module):
    'Add the module flags to ft2font extension'
    if not get_pkgconfig(module, 'freetype2'):
        module.libraries.extend(['freetype', 'z'])
        add_base_flags(module)

        basedirs = module.include_dirs[:]  # copy the list to avoid inf loop!
        for d in basedirs:
            module.include_dirs.append(os.path.join(d, 'freetype2'))
            p = os.path.join(d, 'lib/freetype2/include')
            if os.path.exists(p): module.include_dirs.append(p)
            p = os.path.join(d, 'lib/freetype2/include/freetype2')
            if os.path.exists(p): module.include_dirs.append(p)

        basedirs = module.library_dirs[:]  # copy the list to avoid inf loop!
        for d in basedirs:
            p = os.path.join(d, 'freetype2/lib')
            if os.path.exists(p): module.library_dirs.append(p)
    else:
        add_base_flags(module)

    if sys.platform == 'win32' and win32_compiler == 'mingw32':
        module.libraries.append('gw32c')

    # put this last for library link order
    module.libraries.extend(std_libs)

def check_for_gtk():
    'check for the presence of pygtk'
    gotit = False
    explanation = None
    try:
        import gtk
    except ImportError:
        explanation = 'Building for Gtk+ requires pygtk; you must be able to "import gtk" in your build/install environment'
    except RuntimeError:
        explanation = 'pygtk present but import failed'
    else:
        version = (2,2,0)
        if gtk.pygtk_version < version:
            explanation = "Error: GTK backend requires PyGTK %d.%d.%d (or later), " \
                  "%d.%d.%d was detected." % (
                version + gtk.pygtk_version)
        else:
            gotit = True

    if gotit:
        module = Extension('test', [])
        add_pygtk_flags(module)
        if not find_include_file(module.include_dirs, os.path.join("gtk", "gtk.h")):
            explanation = (
                "Could not find Gtk+ headers in any of %s" %
                ", ".join(["'%s'" % x for x in module.include_dirs]))

    def ver2str(tup):
        return ".".join([str(x) for x in tup])

    if gotit:
        import gobject
        if hasattr(gobject, 'pygobject_version'):
            pygobject_version = ver2str(gobject.pygobject_version)
        else:
            pygobject_version = '[pre-pygobject]'
        print_status("Gtk+", "gtk+: %s, glib: %s, pygtk: %s, pygobject: %s" %
                     (ver2str(gtk.gtk_version), ver2str(gobject.glib_version),
                      ver2str(gtk.pygtk_version), pygobject_version))
    else:
        print_status("Gtk+", "no")

    if explanation is not None:
        print_message(explanation)

    return gotit

def add_pygtk_flags(module):
    'Add the module flags to build extensions which use gtk'

    if sys.platform=='win32':
        # popen broken on my win32 plaform so I can't use pkgconfig
        module.library_dirs.extend(
            ['C:/GTK/bin', 'C:/GTK/lib'])

        module.include_dirs.extend(
            ['win32_static/include/pygtk-2.0',
             'C:/GTK/include',
             'C:/GTK/include/gobject',
             'C:/GTK/include/gmodule',
             'C:/GTK/include/glib',
             'C:/GTK/include/pango',
             'C:/GTK/include/atk',
             'C:/GTK/include/X11',
             'C:/GTK/include/cairo',
             'C:/GTK/include/gdk',
             'C:/GTK/include/gdk-pixbuf',
             'C:/GTK/include/gtk',
             ])

        add_base_flags(module)

        if not os.environ.has_key('PKG_CONFIG_PATH'):
            # If Gtk+ is installed, pkg-config is required to be installed
            os.environ['PKG_CONFIG_PATH'] = 'C:\GTK\lib\pkgconfig'

        pygtkIncludes = getoutput('pkg-config --cflags-only-I pygtk-2.0').split()
        gtkIncludes = getoutput('pkg-config --cflags-only-I gtk+-2.0').split()
        includes = pygtkIncludes + gtkIncludes
        module.include_dirs.extend([include[2:] for include in includes])

        pygtkLinker = getoutput('pkg-config --libs pygtk-2.0').split()
        gtkLinker =  getoutput('pkg-config --libs gtk+-2.0').split()
        linkerFlags = pygtkLinker + gtkLinker

        module.libraries.extend(
            [flag[2:] for flag in linkerFlags if flag.startswith('-l')])

        module.library_dirs.extend(
            [flag[2:] for flag in linkerFlags if flag.startswith('-L')])

        module.extra_link_args.extend(
            [flag for flag in linkerFlags if not
             (flag.startswith('-l') or flag.startswith('-L'))])

        # visual studio doesn't need the math library
        if sys.platform == 'win32' and win32_compiler == 'msvc' and 'm' in module.libraries:
            module.libraries.remove('m')

    if sys.platform != 'win32':
        # If Gtk+ is installed, pkg-config is required to be installed
        add_base_flags(module)
        get_pkgconfig(module, 'pygtk-2.0 gtk+-2.0')

    # visual studio doesn't need the math library
    if sys.platform == 'win32' and win32_compiler == 'msvc' and 'm' in module.libraries:
        module.libraries.remove('m')


def check_for_wx():
    gotit = False
    explanation = None
    try:
        import wx
    except ImportError:
        explanation = 'wxPython not found'
    else:
        if getattr(wx, '__version__', '0.0')[0:3] >= '2.8':
            print_status("wxPython", wx.__version__)
            return True
        elif sys.platform == 'win32' and win32_compiler == 'mingw32':
            explanation = "The wxAgg extension can not be built using the mingw32 compiler on Windows, since the default wxPython binary is built using MS Visual Studio"
        else:
            wxconfig = find_wx_config()
            if wxconfig is None:
                explanation = """
WXAgg's accelerator requires `wx-config'.

The `wx-config\' executable could not be located in any directory of the
PATH environment variable. If you want to build WXAgg, and wx-config is
in some other location or has some other name, set the WX_CONFIG
environment variable to the full path of the executable like so:

export WX_CONFIG=/usr/lib/wxPython-2.6.1.0-gtk2-unicode/bin/wx-config
"""
            elif not check_wxpython_broken_macosx104_version(wxconfig):
                explanation = 'WXAgg\'s accelerator not building because a broken wxPython (installed by Apple\'s Mac OS X) was found.'
            else:
                gotit = True

    if gotit:
        module = Extension("test", [])
        add_wx_flags(module, wxconfig)
        if not find_include_file(
            module.include_dirs,
            os.path.join("wx", "wxPython", "wxPython.h")):
            explanation = ("Could not find wxPython headers in any of %s" %
                               ", ".join(["'%s'" % x for x in module.include_dirs]))

    if gotit:
        print_status("wxPython", wx.__version__)
    else:
        print_status("wxPython", "no")
    if explanation is not None:
        print_message(explanation)
    return gotit

def find_wx_config():
    """If the WX_CONFIG environment variable has been set, returns it value.
    Otherwise, search for `wx-config' in the PATH directories and return the
    first match found.  Failing that, return None.
    """

    wxconfig = os.getenv('WX_CONFIG')
    if wxconfig is not None:
        return wxconfig

    path = os.getenv('PATH') or ''
    for dir in path.split(':'):
        wxconfig = os.path.join(dir, 'wx-config')
        if os.path.exists(wxconfig):
            return wxconfig

    return None

def check_wxpython_broken_macosx104_version(wxconfig):
    """Determines if we're using a broken wxPython installed by Mac OS X 10.4"""
    if sys.platform == 'darwin':
        if wxconfig == '/usr/bin/wx-config':
            version_full = getoutput(wxconfig + ' --version-full')
            if version_full == '2.5.3.1':
                return False
    return True

def add_wx_flags(module, wxconfig):
    """
    Add the module flags to build extensions which use wxPython.
    """

    if sys.platform == 'win32': # just added manually
        wxlibs = ['wxexpath', 'wxjpegh', 'wxmsw26uh',
                  'wxmsw26uh_animate', 'wxmsw26uh_gizmos', 'wxmsw26uh_gizmos_xrc',
                  'wxmsw26uh_gl', 'wxmsw26uh_stc', 'wxpngh', 'wxregexuh', 'wxtiffh', 'wxzlibh']
        module.libraries.extend(wxlibs)
        module.libraries.extend(wxlibs)
        return

    get_pkgconfig(module, '', flags='--cppflags --libs', pkg_config_exec='wx-config')

# Make sure you use the Tk version given by Tkinter.TkVersion
# or else you'll build for a wrong version of the Tcl
# interpreter (leading to nasty segfaults).

class FoundTclTk:
    pass

def find_tcltk():
    """Finds Tcl/Tk includes/libraries/version by interrogating Tkinter."""
    # By this point, we already know that Tkinter imports correctly
    import Tkinter
    o = FoundTclTk()
    try:
        tk=Tkinter.Tk()
    except Tkinter.TclError:
        o.tcl_lib = "/usr/local/lib"
        o.tcl_inc = "/usr/local/include"
        o.tk_lib = "/usr/local/lib"
        o.tk_inc = "/usr/local/include"
        o.tkv = ""
    else:
        tk.withdraw()
        o.tcl_lib = os.path.normpath(os.path.join(str(tk.getvar('tcl_library')), '../'))
        o.tk_lib = os.path.normpath(os.path.join(str(tk.getvar('tk_library')), '../'))
        o.tkv = str(Tkinter.TkVersion)[:3]
        o.tcl_inc = os.path.normpath(os.path.join(str(tk.getvar('tcl_library')),
                    '../../include/tcl'+o.tkv))
        if not os.path.exists(o.tcl_inc):
            o.tcl_inc = os.path.normpath(os.path.join(str(tk.getvar('tcl_library')),
                        '../../include'))
        o.tk_inc = os.path.normpath(os.path.join(str(tk.getvar('tk_library')),
                    '../../include/tk'+o.tkv))
        if not os.path.exists(o.tk_inc):
            o.tk_inc = os.path.normpath(os.path.join(str(tk.getvar('tk_library')),
                        '../../include'))

        if ((not os.path.exists(os.path.join(o.tk_inc,'tk.h'))) and
            os.path.exists(os.path.join(o.tcl_inc,'tk.h'))):
            o.tk_inc = o.tcl_inc

        if not os.path.exists(o.tcl_inc):
            # this is a hack for suse linux, which is broken
            if (sys.platform.startswith('linux') and
                os.path.exists('/usr/include/tcl.h') and
                os.path.exists('/usr/include/tk.h')):
                o.tcl_inc = '/usr/include/'
                o.tk_inc = '/usr/include/'
    return o

def check_for_tk():
    gotit = False
    explanation = None
    try:
        import Tkinter
    except ImportError:
        explanation = 'TKAgg requires Tkinter'
    except RuntimeError:
        explanation = 'Tkinter present but import failed'
    else:
        if Tkinter.TkVersion < 8.3:
            explanation = "Tcl/Tk v8.3 or later required\n"
            sys.exit(1)
        else:
            try:
                tk = Tkinter.Tk()
                tk.withdraw()
            except Tkinter.TclError:
                explanation = """\
Using default library and include directories for Tcl and Tk because a
Tk window failed to open.  You may need to define DISPLAY for Tk to work
so that setup can determine where your libraries are located."""
            gotit = True

    if gotit:
        module = Extension('test', [])
        try:
            add_tk_flags(module)
        except RuntimeError, e:
            explanation = str(e)
            gotit = False
        if not find_include_file(module.include_dirs, "tk.h"):
            explanation = 'Tkinter present, but header files are not installed.  You may need to install development packages.'

    if gotit:
        print_status("Tkinter", "Tkinter: %s, Tk: %s, Tcl: %s" %
                     (Tkinter.__version__.split()[-2], Tkinter.TkVersion, Tkinter.TclVersion))
    else:
        print_status("Tkinter", "no")
    if explanation is not None:
        print_message(explanation)
    return gotit

def add_tk_flags(module):
    'Add the module flags to build extensions which use tk'
    if sys.platform=='win32':
        major, minor1, minor2, s, tmp = sys.version_info
        if major==2 and minor1 in [3, 4, 5]:
            module.include_dirs.extend(['win32_static/include/tcl8.4'])
            module.libraries.extend(['tk84', 'tcl84'])
        elif major==2 and minor1==2:
            module.include_dirs.extend(['win32_static/include/tcl8.3'])
            module.libraries.extend(['tk83', 'tcl83'])
        else:
            raise RuntimeError('No tk/win32 support for this python version yet')
        module.library_dirs.extend([os.path.join(sys.prefix, 'dlls')])
        return

    elif sys.platform == 'darwin' :
        # this config section lifted directly from Imaging - thanks to
        # the effbot!

        # First test for a MacOSX/darwin framework install
        from os.path import join, exists
        framework_dirs = [
            '/System/Library/Frameworks/',
            '/Library/Frameworks',
            join(os.getenv('HOME'), '/Library/Frameworks')
        ]

        # Find the directory that contains the Tcl.framwork and Tk.framework
        # bundles.
        # XXX distutils should support -F!
        tk_framework_found = 0
        for F in framework_dirs:
            # both Tcl.framework and Tk.framework should be present
            for fw in 'Tcl', 'Tk':
                if not exists(join(F, fw + '.framework')):
                    break
            else:
                # ok, F is now directory with both frameworks. Continure
                # building
                tk_framework_found = 1
                break
        if tk_framework_found:
            # For 8.4a2, we must add -I options that point inside the Tcl and Tk
            # frameworks. In later release we should hopefully be able to pass
            # the -F option to gcc, which specifies a framework lookup path.
            #
            tk_include_dirs = [
                join(F, fw + '.framework', H)
                for fw in 'Tcl', 'Tk'
                for H in 'Headers', 'Versions/Current/PrivateHeaders'
            ]

            # For 8.4a2, the X11 headers are not included. Rather than include a
            # complicated search, this is a hard-coded path. It could bail out
            # if X11 libs are not found...
            # tk_include_dirs.append('/usr/X11R6/include')
            frameworks = ['-framework', 'Tcl', '-framework', 'Tk']
            module.include_dirs.extend(tk_include_dirs)
            module.extra_link_args.extend(frameworks)
            module.extra_compile_args.extend(frameworks)
            return

    # you're still here? ok we'll try it this way
    o = find_tcltk() # todo: try/except
    module.include_dirs.extend([o.tcl_inc, o.tk_inc])
    module.library_dirs.extend([o.tcl_lib, o.tk_lib])
    module.libraries.extend(['tk'+o.tkv, 'tcl'+o.tkv])


def add_windowing_flags(module):
    'Add the module flags to build extensions using windowing api'
    module.include_dirs.extend(['C:/include'])
    module.libraries.extend(['user32'])
    module.library_dirs.extend(['C:/lib'])
    module.extra_link_args.append("-mwindows")

def build_windowing(ext_modules, packages):
    """windowing is optional and provides functions for managing
       windows better, .e.g.  maintaining focus on win32"""
    global BUILT_WINDOWING
    if BUILT_WINDOWING: return # only build it if you you haven't already
    module = Extension('matplotlib._windowing',
                       ['src/_windowing.cpp',
                        ],
                       )
    add_windowing_flags(module)
    ext_modules.append(module)
    BUILT_WINDOWING = True

def build_ft2font(ext_modules, packages):
    global BUILT_FT2FONT
    if BUILT_FT2FONT: return # only build it if you you haven't already
    deps = ['src/ft2font.cpp', 'src/mplutils.cpp']
    deps.extend(glob.glob('CXX/*.cxx'))
    deps.extend(glob.glob('CXX/*.c'))

    module = Extension('matplotlib.ft2font', deps)
    add_ft2font_flags(module)
    ext_modules.append(module)
    BUILT_FT2FONT = True

def build_ttconv(ext_modules, packages):
    global BUILT_TTCONV
    if BUILT_TTCONV: return # only build it if you you haven't already
    deps = ['src/_ttconv.cpp',
            'ttconv/pprdrv_tt.cpp',
            'ttconv/pprdrv_tt2.cpp',
            'ttconv/ttutil.cpp']

    module = Extension('matplotlib.ttconv', deps)
    add_base_flags(module)
    ext_modules.append(module)
    BUILT_TTCONV = True

def build_gtkagg(ext_modules, packages):
    global BUILT_GTKAGG
    if BUILT_GTKAGG: return # only build it if you you haven't already
    deps = ['src/_gtkagg.cpp', 'src/mplutils.cpp']#, 'src/_transforms.cpp']
    deps.extend(glob.glob('CXX/*.cxx'))
    deps.extend(glob.glob('CXX/*.c'))

    module = Extension('matplotlib.backends._gtkagg',
                       deps,
                       )

    # add agg flags before pygtk because agg only supports freetype1
    # and pygtk includes freetype2.  This is a bit fragile.

    add_agg_flags(module)
    add_ft2font_flags(module)
    add_pygtk_flags(module)

    ext_modules.append(module)
    BUILT_GTKAGG = True

def build_tkagg(ext_modules, packages):
    global BUILT_TKAGG
    if BUILT_TKAGG: return # only build it if you you haven't already
    deps = ['src/_tkagg.cpp']
    deps.extend(glob.glob('CXX/*.cxx'))
    deps.extend(glob.glob('CXX/*.c'))

    module = Extension('matplotlib.backends._tkagg',
                       deps,
                       )

    # add agg flags before pygtk because agg only supports freetype1
    # and pygtk includes freetype2.  This is a bit fragile.

    add_tk_flags(module) # do this first
    add_agg_flags(module)
    add_ft2font_flags(module)

    ext_modules.append(module)
    BUILT_TKAGG = True


def build_wxagg(ext_modules, packages):
     global BUILT_WXAGG
     if BUILT_WXAGG:
         return

     deps = ['src/_wxagg.cpp', 'src/mplutils.cpp']
     deps.extend(glob.glob('CXX/*.cxx'))
     deps.extend(glob.glob('CXX/*.c'))

     module = Extension('matplotlib.backends._wxagg', deps)

     add_agg_flags(module)
     add_ft2font_flags(module)
     wxconfig = find_wx_config()
     add_wx_flags(module, wxconfig)

     ext_modules.append(module)
     BUILT_WXAGG = True


def build_agg(ext_modules, packages):
    global BUILT_AGG
    if BUILT_AGG: return # only build it if you you haven't already


    agg = (
           'agg_trans_affine.cpp',
           'agg_path_storage.cpp',
           'agg_bezier_arc.cpp',
           'agg_curves.cpp',
           'agg_vcgen_dash.cpp',
           'agg_vcgen_stroke.cpp',
           #'agg_vcgen_markers_term.cpp',
           'agg_rasterizer_scanline_aa.cpp',
           'agg_image_filters.cpp',
           )


    deps = ['%s/src/%s'%(AGG_VERSION, name) for name in agg]
    deps.extend(('src/_image.cpp', 'src/ft2font.cpp', 'src/mplutils.cpp'))
    deps.extend(glob.glob('CXX/*.cxx'))
    deps.extend(glob.glob('CXX/*.c'))

    temp_copy('src/_backend_agg.cpp', 'src/backend_agg.cpp')
    deps.append('src/backend_agg.cpp')
    module = Extension(
        'matplotlib.backends._backend_agg',
        deps,
        include_dirs=numpy_inc_dirs,
        )

    add_numpy_flags(module)

    add_agg_flags(module)
    add_ft2font_flags(module)
    ext_modules.append(module)

    BUILT_AGG = True

def build_image(ext_modules, packages):
    global BUILT_IMAGE
    if BUILT_IMAGE: return # only build it if you you haven't already

    agg = ('agg_trans_affine.cpp',
           'agg_path_storage.cpp',
           'agg_rasterizer_scanline_aa.cpp',
           'agg_image_filters.cpp',
           'agg_bezier_arc.cpp',
           )

    temp_copy('src/_image.cpp', 'src/image.cpp')
    deps = ['src/image.cpp', 'src/mplutils.cpp']
    deps.extend(['%s/src/%s'%(AGG_VERSION,name) for name in agg])
    deps.extend(glob.glob('CXX/*.cxx'))
    deps.extend(glob.glob('CXX/*.c'))

    module = Extension(
        'matplotlib._image',
        deps,
        include_dirs=numpy_inc_dirs,
        )

    add_numpy_flags(module)
    add_agg_flags(module)
    ext_modules.append(module)

    BUILT_IMAGE = True

def build_swigagg(ext_modules, packages):
    # setup the swig agg wrapper
    deps = ['src/agg.cxx']
    deps.extend(['%s/src/%s'%(AGG_VERSION, fname) for fname in
                 (
        'agg_trans_affine.cpp',
        'agg_path_storage.cpp',
        'agg_bezier_arc.cpp',
        'agg_vcgen_dash.cpp',
        'agg_vcgen_stroke.cpp',
        'agg_rasterizer_scanline_aa.cpp',
        'agg_curves.cpp',
        )
                 ])


    agg = Extension('matplotlib._agg',
                    deps,
                    )

    agg.include_dirs.extend(['%s/include'%AGG_VERSION, 'src', 'swig'])
    agg.libraries.extend(std_libs)
    ext_modules.append(agg)

def build_transforms(ext_modules, packages):
    cxx = glob.glob('CXX/*.cxx')
    cxx.extend(glob.glob('CXX/*.c'))
    temp_copy("src/_transforms.cpp","src/transforms.cpp")
    module = Extension('matplotlib._transforms',
                         ['src/transforms.cpp',
                          'src/mplutils.cpp'] + cxx,
                         libraries = std_libs,
                         include_dirs = ['src', '.']+numpy_inc_dirs,
                         )


    add_numpy_flags(module)
    add_base_flags(module)
    ext_modules.append(module)


def build_traits(ext_modules, packages):
    global BUILT_TRAITS
    if BUILT_TRAITS:
        return # only build it if you you haven't already

    ctraits = Extension('enthought.traits.ctraits',
                        ['lib/enthought/traits/ctraits.c'])
    ext_modules.append(ctraits)
    packages.extend(['enthought',
                     'enthought/etsconfig',
                     'enthought/traits',
                     'enthought/traits/ui',
                     'enthought/traits/ui/extras',
                     'enthought/traits/ui/null',
                     'enthought/traits/ui/tk',
                     ])
    BUILT_TRAITS = True


def build_contour(ext_modules, packages):
    global BUILT_CONTOUR
    if BUILT_CONTOUR: return # only build it if you you haven't already

    module = Extension(
        'matplotlib._cntr',
        [ 'src/cntr.c'],
        include_dirs=numpy_inc_dirs,
        )
    add_numpy_flags(module)
    add_base_flags(module)
    ext_modules.append(module)

    BUILT_CONTOUR = True


def build_nxutils(ext_modules, packages):
    global BUILT_NXUTILS
    if BUILT_NXUTILS: return # only build it if you you haven't already
    module = Extension(
        'matplotlib.nxutils',
        [ 'src/nxutils.c'],
        include_dirs=numpy_inc_dirs,
        )
    add_numpy_flags(module)
    add_base_flags(module)
    ext_modules.append(module)

    BUILT_NXUTILS = True


def build_gdk(ext_modules, packages):
    global BUILT_GDK
    if BUILT_GDK: return # only build it if you you haven't already

    temp_copy('src/_backend_gdk.c', 'src/backend_gdk.c')
    module = Extension(
        'matplotlib.backends._backend_gdk',
        ['src/backend_gdk.c', ],
        libraries = [],
        include_dirs=numpy_inc_dirs,
        )

    add_numpy_flags(module)
    add_base_flags(module)
    add_pygtk_flags(module)
    ext_modules.append(module)

    BUILT_GDK = True

def build_subprocess(ext_modules, packages):
    module = Extension(
        'subprocess._subprocess',
        ['src/_subprocess.c', ],
        )
    add_base_flags(module)
    ext_modules.append(module)