Pillow/setup.py

import glob
import os
import platform
import re
import struct
import sys

from distutils.command.build_ext import build_ext
from distutils import sysconfig
from setuptools import Extension, setup, find_packages


_IMAGING = (
    "decode", "encode", "map", "display", "outline", "path",
    )

_LIB_IMAGING = (
    "Access", "Antialias", "Bands", "BitDecode", "Blend", "Chops",
    "Convert", "ConvertYCbCr", "Copy", "Crc32", "Crop", "Dib", "Draw",
    "Effects", "EpsEncode", "File", "Fill", "Filter", "FliDecode",
    "Geometry", "GetBBox", "GifDecode", "GifEncode", "HexDecode",
    "Histo", "JpegDecode", "JpegEncode", "LzwDecode", "Matrix",
    "ModeFilter", "MspDecode", "Negative", "Offset", "Pack",
    "PackDecode", "Palette", "Paste", "Quant", "QuantHash",
    "QuantHeap", "PcdDecode", "PcxDecode", "PcxEncode", "Point",
    "RankFilter", "RawDecode", "RawEncode", "Storage", "SunRleDecode",
    "TgaRleDecode", "Unpack", "UnpackYCC", "UnsharpMask", "XbmDecode",
    "XbmEncode", "ZipDecode", "ZipEncode")


def _add_directory(path, dir, where=None):
    if dir and os.path.isdir(dir) and dir not in path:
        if where is None:
            path.append(dir)
        else:
            path.insert(where, dir)


def _find_include_file(self, include):
    for directory in self.compiler.include_dirs:
        if os.path.isfile(os.path.join(directory, include)):
            return 1
    return 0


def _find_library_file(self, library):
    return self.compiler.find_library_file(self.compiler.library_dirs, library)


def _find_version(filename):
    for line in open(filename).readlines():
        m = re.search("VERSION\s*=\s*\"([^\"]+)\"", line)
        if m:
            return m.group(1)
    return None


def _lib_include(root):
    # map root to (root/lib, root/include)
    return os.path.join(root, "lib"), os.path.join(root, "include")


def _read(file):
    return open(file, 'rb').read()

try:
    import _tkinter
except ImportError:
    _tkinter = None


NAME = 'Pillow'
VERSION = '1.7.8'
PIL_VERSION = '1.1.7'
TCL_ROOT = None
JPEG_ROOT = None
ZLIB_ROOT = None
TIFF_ROOT = None
FREETYPE_ROOT = None
LCMS_ROOT = None


class pil_build_ext(build_ext):

    def build_extensions(self):

        global TCL_ROOT

        library_dirs = []
        include_dirs = []

        _add_directory(include_dirs, "libImaging")

        #
        # add platform directories

        if sys.platform == "cygwin":
            # pythonX.Y.dll.a is in the /usr/lib/pythonX.Y/config directory
            _add_directory(library_dirs, os.path.join(
                "/usr/lib", "python%s" % sys.version[:3], "config"))

        elif sys.platform == "darwin":
            # attempt to make sure we pick freetype2 over other versions
            _add_directory(include_dirs, "/sw/include/freetype2")
            _add_directory(include_dirs, "/sw/lib/freetype2/include")
            # fink installation directories
            _add_directory(library_dirs, "/sw/lib")
            _add_directory(include_dirs, "/sw/include")
            # darwin ports installation directories
            _add_directory(library_dirs, "/opt/local/lib")
            _add_directory(include_dirs, "/opt/local/include")
            # freetype2 ships with X11
            _add_directory(library_dirs, "/usr/X11/lib")
            _add_directory(include_dirs, "/usr/X11/include")

        elif sys.platform.startswith("linux"):
            if platform.processor() == "x86_64":
                _add_directory(library_dirs, "/lib64")
                _add_directory(library_dirs, "/usr/lib64")
                _add_directory(library_dirs, "/usr/lib/x86_64-linux-gnu")
            else:
                _add_directory(library_dirs, "/usr/lib/i386-linux-gnu")

            # XXX Kludge. Above /\ we brute force support multiarch. Here we
            # try Barry's more general approach. Afterward, something should
            # work ;-)
            self.add_multiarch_paths()

        _add_directory(library_dirs, "/usr/local/lib")
        # FIXME: check /opt/stuff directories here?

        prefix = sysconfig.get_config_var("prefix")
        if prefix:
            _add_directory(library_dirs, os.path.join(prefix, "lib"))
            _add_directory(include_dirs, os.path.join(prefix, "include"))

        #
        # locate tkinter libraries

        if _tkinter:
            TCL_VERSION = _tkinter.TCL_VERSION[:3]

        if _tkinter and not TCL_ROOT:
            # we have Tkinter but the TCL_ROOT variable was not set;
            # try to locate appropriate Tcl/Tk libraries
            PYVERSION = sys.version[0] + sys.version[2]
            TCLVERSION = TCL_VERSION[0] + TCL_VERSION[2]
            roots = [
                # common installation directories, mostly for Windows
                # (for Unix-style platforms, we'll check in well-known
                # locations later)
                os.path.join("/py" + PYVERSION, "Tcl"),
                os.path.join("/python" + PYVERSION, "Tcl"),
                "/Tcl", "/Tcl" + TCLVERSION, "/Tcl" + TCL_VERSION,
                os.path.join(os.environ.get("ProgramFiles", ""), "Tcl"),
                ]
            for TCL_ROOT in roots:
                TCL_ROOT = os.path.abspath(TCL_ROOT)
                if os.path.isfile(os.path.join(TCL_ROOT, "include", "tk.h")):
                    # FIXME: use distutils logging (?)
                    print("--- using Tcl/Tk libraries at", TCL_ROOT)
                    print("--- using Tcl/Tk version", TCL_VERSION)
                    TCL_ROOT = _lib_include(TCL_ROOT)
                    break
            else:
                TCL_ROOT = None

        #
        # add configured kits

        for root in (TCL_ROOT, JPEG_ROOT, TCL_ROOT, TIFF_ROOT, ZLIB_ROOT,
                     FREETYPE_ROOT, LCMS_ROOT):
            if isinstance(root, type(())):
                lib_root, include_root = root
            else:
                lib_root = include_root = root
            _add_directory(library_dirs, lib_root)
            _add_directory(include_dirs, include_root)

        #
        # add standard directories

        # look for tcl specific subdirectory (e.g debian)
        if _tkinter:
            tcl_dir = "/usr/include/tcl" + TCL_VERSION
            if os.path.isfile(os.path.join(tcl_dir, "tk.h")):
                _add_directory(include_dirs, tcl_dir)

        # standard locations
        _add_directory(library_dirs, "/usr/local/lib")
        _add_directory(include_dirs, "/usr/local/include")

        _add_directory(library_dirs, "/usr/lib")
        _add_directory(include_dirs, "/usr/include")

        #
        # insert new dirs *before* default libs, to avoid conflicts
        # between Python PYD stub libs and real libraries

        self.compiler.library_dirs = library_dirs + self.compiler.library_dirs
        self.compiler.include_dirs = include_dirs + self.compiler.include_dirs

        #
        # look for available libraries

        class feature:
            zlib = jpeg = tiff = freetype = tcl = tk = lcms = None
        feature = feature()

        if _find_include_file(self, "zlib.h"):
            if _find_library_file(self, "z"):
                feature.zlib = "z"
            elif sys.platform == "win32" and _find_library_file(self, "zlib"):
                feature.zlib = "zlib"  # alternative name

        if _find_include_file(self, "jpeglib.h"):
            if _find_library_file(self, "jpeg"):
                feature.jpeg = "jpeg"
            elif sys.platform == "win32" and _find_library_file(self,
                    "libjpeg"):
                feature.jpeg = "libjpeg"  # alternative name

        if _find_library_file(self, "tiff"):
            feature.tiff = "tiff"

        if _find_library_file(self, "freetype"):
            # look for freetype2 include files
            freetype_version = 0
            for dir in self.compiler.include_dirs:
                if os.path.isfile(os.path.join(dir, "ft2build.h")):
                    freetype_version = 21
                    dir = os.path.join(dir, "freetype2")
                    break
                dir = os.path.join(dir, "freetype2")
                if os.path.isfile(os.path.join(dir, "ft2build.h")):
                    freetype_version = 21
                    break
                if os.path.isdir(os.path.join(dir, "freetype")):
                    freetype_version = 20
                    break
            if freetype_version:
                feature.freetype = "freetype"
                feature.freetype_version = freetype_version
                if dir:
                    _add_directory(self.compiler.include_dirs, dir, 0)

        if _find_include_file(self, "lcms.h"):
            if _find_library_file(self, "lcms"):
                feature.lcms = "lcms"

        if _tkinter and _find_include_file(self, "tk.h"):
            # the library names may vary somewhat (e.g. tcl84 or tcl8.4)
            version = TCL_VERSION[0] + TCL_VERSION[2]
            if _find_library_file(self, "tcl" + version):
                feature.tcl = "tcl" + version
            elif _find_library_file(self, "tcl" + TCL_VERSION):
                feature.tcl = "tcl" + TCL_VERSION
            if _find_library_file(self, "tk" + version):
                feature.tk = "tk" + version
            elif _find_library_file(self, "tk" + TCL_VERSION):
                feature.tk = "tk" + TCL_VERSION

        #
        # core library

        files = ["_imaging.c"]
        for file in _IMAGING:
            files.append(file + ".c")
        for file in _LIB_IMAGING:
            files.append(os.path.join("libImaging", file + ".c"))

        libs = []
        defs = []
        if feature.jpeg:
            libs.append(feature.jpeg)
            defs.append(("HAVE_LIBJPEG", None))
        if feature.zlib:
            libs.append(feature.zlib)
            defs.append(("HAVE_LIBZ", None))
        if sys.platform == "win32":
            libs.extend(["kernel32", "user32", "gdi32"])
        if struct.unpack("h", "\0\1".encode('ascii'))[0] == 1:
            defs.append(("WORDS_BIGENDIAN", None))

        exts = [(Extension(
            "_imaging", files, libraries=libs, define_macros=defs))]

        #
        # additional libraries

        if feature.freetype:
            defs = []
            if feature.freetype_version == 20:
                defs.append(("USE_FREETYPE_2_0", None))
            exts.append(Extension(
                "_imagingft", ["_imagingft.c"], libraries=["freetype"],
                define_macros=defs))

        if os.path.isfile("_imagingtiff.c") and feature.tiff:
            exts.append(Extension(
                "_imagingtiff", ["_imagingtiff.c"], libraries=["tiff"]))

        if os.path.isfile("_imagingcms.c") and feature.lcms:
            extra = []
            if sys.platform == "win32":
                extra.extend(["user32", "gdi32"])
            exts.append(Extension(
                "_imagingcms", ["_imagingcms.c"], libraries=["lcms"] + extra))

        if sys.platform == "darwin":
            # locate Tcl/Tk frameworks
            frameworks = []
            framework_roots = [
                "/Library/Frameworks",
                "/System/Library/Frameworks"]
            for root in framework_roots:
                if (os.path.exists(os.path.join(root, "Tcl.framework")) and
                    os.path.exists(os.path.join(root, "Tk.framework"))):
                    print("--- using frameworks at %s" % root)
                    frameworks = ["-framework", "Tcl", "-framework", "Tk"]
                    dir = os.path.join(root, "Tcl.framework", "Headers")
                    _add_directory(self.compiler.include_dirs, dir, 0)
                    dir = os.path.join(root, "Tk.framework", "Headers")
                    _add_directory(self.compiler.include_dirs, dir, 1)
                    break
            if frameworks:
                exts.append(Extension(
                    "_imagingtk", ["_imagingtk.c", "Tk/tkImaging.c"],
                    extra_compile_args=frameworks, extra_link_args=frameworks))
                feature.tcl = feature.tk = 1  # mark as present
        elif feature.tcl and feature.tk:
            exts.append(Extension(
                "_imagingtk", ["_imagingtk.c", "Tk/tkImaging.c"],
                libraries=[feature.tcl, feature.tk]))

        if os.path.isfile("_imagingmath.c"):
            exts.append(Extension("_imagingmath", ["_imagingmath.c"]))

        self.extensions[:] = exts

        build_ext.build_extensions(self)

        #
        # sanity and security checks

        unsafe_zlib = None

        if feature.zlib:
            unsafe_zlib = self.check_zlib_version(self.compiler.include_dirs)

        self.summary_report(feature, unsafe_zlib)

    def summary_report(self, feature, unsafe_zlib):

        print("-" * 68)
        print("SETUP SUMMARY (Pillow %s / PIL %s)" % (VERSION, PIL_VERSION))
        print("-" * 68)
        print("version      %s" % VERSION)
        v = sys.version.split("[")
        print("platform     %s %s" % (sys.platform, v[0].strip()))
        for v in v[1:]:
            print("             [%s" % v.strip())
        print("-" * 68)

        options = [
            (feature.tcl and feature.tk, "TKINTER"),
            (feature.jpeg, "JPEG"),
            (feature.zlib, "ZLIB (PNG/ZIP)"),
            # (feature.tiff, "experimental TIFF G3/G4 read"),
            (feature.freetype, "FREETYPE2"),
            (feature.lcms, "LITTLECMS"),
            ]

        all = 1
        for option in options:
            if option[0]:
                print("--- %s support available" % option[1])
            else:
                print("*** %s support not available" % option[1])
                if option[1] == "TKINTER" and _tkinter:
                    version = _tkinter.TCL_VERSION
                    print("(Tcl/Tk %s libraries needed)" % version)
                print("")
                all = 0

        if feature.zlib and unsafe_zlib:
            print("")
            print("*** Warning: zlib", unsafe_zlib)
            print("may contain a security vulnerability.")
            print("*** Consider upgrading to zlib 1.2.3 or newer.")
            print("*** See: http://www.kb.cert.org/vuls/id/238678")
            print(" http://www.kb.cert.org/vuls/id/680620")
            print(" http://www.gzip.org/zlib/advisory-2002-03-11.txt")
            print("")

        print("-" * 68)

        if not all:
            print("To add a missing option, make sure you have the required")
            print("library, and set the corresponding ROOT variable in the")
            print("setup.py script.")
            print("\n")

        print("To check the build, run the selftest.py script.")

    def check_zlib_version(self, include_dirs):
        # look for unsafe versions of zlib
        for dir in include_dirs:
            zlibfile = os.path.join(dir, "zlib.h")
            if os.path.isfile(zlibfile):
                break
        else:
            return
        for line in open(zlibfile).readlines():
            m = re.match('#define\s+ZLIB_VERSION\s+"([^"]*)"', line)
            if not m:
                continue
            if m.group(1) < "1.2.3":
                return m.group(1)

    # http://hg.python.org/users/barry/rev/7e8deab93d5a
    def add_multiarch_paths(self):
        # Debian/Ubuntu multiarch support.
        # https://wiki.ubuntu.com/MultiarchSpec
        # self.build_temp
        tmpfile = os.path.join(self.build_temp, 'multiarch')
        if not os.path.exists(self.build_temp):
            os.makedirs(self.build_temp)
        ret = os.system('dpkg-architecture -qDEB_HOST_MULTIARCH > %s' %
                        tmpfile)
        ret = os.system(
            'dpkg-architecture -qDEB_HOST_MULTIARCH > %s 2> /dev/null' %
            tmpfile)
        try:
            if ret >> 8 == 0:
                fp = open(tmpfile, 'rb')
                multiarch_path_component = fp.readline().strip()
                _add_directory(self.compiler.library_dirs,
                    '/usr/lib/' + multiarch_path_component)
                _add_directory(self.compiler.include_dirs,
                    '/usr/include/' + multiarch_path_component)
        finally:
            os.unlink(tmpfile)

setup(
    name=NAME,
    version=VERSION,
    description='Python Imaging Library (fork)',
    long_description=(
        _read('README.rst') +
        _read('docs/INSTALL.txt') +
        _read('docs/HISTORY.txt')).decode('utf-8'),
    author='Alex Clark (fork author)',
    author_email='aclark@aclark.net',
    url='http://github.com/python-imaging/Pillow',
    use_2to3=True,
    classifiers=[
        "Development Status :: 6 - Mature",
        "Topic :: Multimedia :: Graphics",
        "Topic :: Multimedia :: Graphics :: Capture :: Digital Camera",
        "Topic :: Multimedia :: Graphics :: Capture :: Scanners",
        "Topic :: Multimedia :: Graphics :: Capture :: Screen Capture",
        "Topic :: Multimedia :: Graphics :: Graphics Conversion",
        "Topic :: Multimedia :: Graphics :: Viewers",
        ],
    cmdclass={"build_ext": pil_build_ext},
    ext_modules=[Extension("_imaging", ["_imaging.c"])],
    packages=find_packages(),
    scripts=glob.glob("Scripts/pil*.py"),
    )