setup.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
Setup script for building clr.pyd and dependencies using mono and into
an egg or wheel.
"""

import collections
import fnmatch
import glob
import os
import subprocess
import sys
import sysconfig
from distutils import spawn
from distutils.command import build_ext, install_data, install_lib

from setuptools import Extension, setup

# Allow config/verbosity to be set from cli
# http://stackoverflow.com/a/4792601/5208670
CONFIG = "Release"  # Release or Debug
VERBOSITY = "minimal"  # quiet, minimal, normal, detailed, diagnostic

is_64bits = sys.maxsize > 2**32
DEVTOOLS = "MsDev" if sys.platform == "win32" else "Mono"
ARCH = "x64" if is_64bits else "x86"
PY_MAJOR = sys.version_info[0]
PY_MINOR = sys.version_info[1]

###############################################################################
# Windows Keys Constants for MSBUILD tools
RegKey = collections.namedtuple('RegKey', 'sdk_name key value_name suffix')
vs_python = "Programs\\Common\\Microsoft\\Visual C++ for Python\\9.0\\WinSDK"
vs_root = "SOFTWARE\\Microsoft\\MSBuild\\ToolsVersions\\{0}"
sdks_root = "SOFTWARE\\Microsoft\\Microsoft SDKs\\Windows\\v{0}Win32Tools"
kits_root = "SOFTWARE\\Microsoft\\Windows Kits\\Installed Roots"
kits_suffix = os.path.join("bin", ARCH)

WIN_SDK_KEYS = (
    RegKey(sdk_name="Windows Kit 10.0", key=kits_root,
           value_name="KitsRoot10", suffix=kits_suffix),

    RegKey(sdk_name="Windows Kit 8.1", key=kits_root,
           value_name="KitsRoot81", suffix=kits_suffix),

    RegKey(sdk_name="Windows Kit 8.0", key=kits_root,
           value_name="KitsRoot", suffix=kits_suffix),

    RegKey(sdk_name="Windows SDK 7.1A", key=sdks_root.format("7.1A\\WinSDK-"),
           value_name="InstallationFolder", suffix=""),

    RegKey(sdk_name="Windows SDK 7.1", key=sdks_root.format("7.1\\WinSDK"),
           value_name="InstallationFolder", suffix=""),

    RegKey(sdk_name="Windows SDK 7.0A", key=sdks_root.format("7.0A\\WinSDK-"),
           value_name="InstallationFolder", suffix=""),

    RegKey(sdk_name="Windows SDK 7.0", key=sdks_root.format("7.0\\WinSDK"),
           value_name="InstallationFolder", suffix=""),

    RegKey(sdk_name="Windows SDK 6.0A", key=sdks_root.format("6.0A\\WinSDK"),
           value_name="InstallationFolder", suffix=""),
)

VS_KEYS = (
    RegKey(sdk_name="MSBuild 14", key=vs_root.format("14.0"),
           value_name="MSBuildToolsPath", suffix=""),

    RegKey(sdk_name="MSBuild 12", key=vs_root.format("12.0"),
           value_name="MSBuildToolsPath", suffix=""),

    RegKey(sdk_name="MSBuild 4", key=vs_root.format("4.0"),
           value_name="MSBuildToolsPath", suffix=""),

    RegKey(sdk_name="MSBuild 3.5", key=vs_root.format("3.5"),
           value_name="MSBuildToolsPath", suffix=""),

    RegKey(sdk_name="MSBuild 2.0", key=vs_root.format("2.0"),
           value_name="MSBuildToolsPath", suffix=""),
)


###############################################################################
def _check_output(*args, **kwargs):
    """Check output wrapper for py2/py3 compatibility"""
    output = subprocess.check_output(*args, **kwargs)
    if PY_MAJOR == 2:
        return output
    return output.decode("ascii")


def _get_interop_filename():
    """interopXX.cs is auto-generated as part of the build.
    For common windows platforms pre-generated files are included
    as most windows users won't have Clang installed, which is
    required to generate the file.
    """
    interop_filename = "interop{0}{1}{2}.cs".format(
        PY_MAJOR, PY_MINOR, getattr(sys, "abiflags", ""))
    return os.path.join("src", "runtime", interop_filename)


def _get_source_files():
    """Walk project and collect the files needed for ext_module"""
    for ext in (".sln", ):
        for path in glob.glob("*" + ext):
            yield path

    for root, dirnames, filenames in os.walk("src"):
        for ext in (".cs", ".csproj", ".snk", ".config",
                    ".py", ".c", ".h", ".ico"):
            for filename in fnmatch.filter(filenames, "*" + ext):
                yield os.path.join(root, filename)

    for root, dirnames, filenames in os.walk("tools"):
        for ext in (".exe", ".py", ".c", ".h"):
            for filename in fnmatch.filter(filenames, "*" + ext):
                yield os.path.join(root, filename)


def _get_long_description():
    """Helper to populate long_description for pypi releases"""
    try:
        import pypandoc
        return pypandoc.convert('README.md', 'rst')
    except ImportError:
        return '.Net and Mono integration for Python'


class BuildExtPythonnet(build_ext.build_ext):
    def build_extension(self, ext):
        """Builds the .pyd file using msbuild or xbuild"""
        if ext.name != "clr":
            return build_ext.build_ext.build_extension(self, ext)

        # install packages using nuget
        self._install_packages()

        dest_file = self.get_ext_fullpath(ext.name)
        dest_dir = os.path.dirname(dest_file)
        if not os.path.exists(dest_dir):
            os.makedirs(dest_dir)

        # Up to Python 3.2 sys.maxunicode is used to determine the size of
        # Py_UNICODE, but from 3.3 onwards Py_UNICODE is a typedef of wchar_t.
        # TODO: Is this doing the right check for Py27?
        if sys.version_info[:2] <= (3, 2):
            unicode_width = 2 if sys.maxunicode < 0x10FFFF else 4
        else:
            import ctypes
            unicode_width = ctypes.sizeof(ctypes.c_wchar)

        defines = [
            "PYTHON{0}{1}".format(PY_MAJOR, PY_MINOR),
            "PYTHON{0}".format(PY_MAJOR),  # Python Major Version
            "UCS{0}".format(unicode_width),
        ]

        if CONFIG == "Debug":
            defines.extend(["DEBUG", "TRACE"])

        if sys.platform != "win32" and DEVTOOLS == "Mono":
            on_darwin = sys.platform == "darwin"
            defines.append("MONO_OSX" if on_darwin else "MONO_LINUX")

            # Check if --enable-shared was set when Python was built
            enable_shared = sysconfig.get_config_var("Py_ENABLE_SHARED")
            if enable_shared:
                # Double-check if libpython is linked dynamically with python
                ldd_cmd = ["otool", "-L"] if on_darwin else ["ldd"]
                lddout = _check_output(ldd_cmd + [sys.executable])
                if 'libpython' not in lddout:
                    enable_shared = False

            if not enable_shared:
                defines.append("PYTHON_WITHOUT_ENABLE_SHARED")

        if hasattr(sys, "abiflags"):
            if "d" in sys.abiflags:
                defines.append("PYTHON_WITH_PYDEBUG")
            if "m" in sys.abiflags:
                defines.append("PYTHON_WITH_PYMALLOC")

        # check the interop file exists, and create it if it doesn't
        interop_file = _get_interop_filename()
        if not os.path.exists(interop_file):
            self.debug_print("Creating {0}".format(interop_file))
            geninterop = os.path.join("tools", "geninterop", "geninterop.py")
            subprocess.check_call([sys.executable, geninterop, interop_file])

        if DEVTOOLS == "MsDev":
            _xbuild = '"{0}"'.format(self._find_msbuild_tool("msbuild.exe"))
            _config = "{0}Win".format(CONFIG)

        elif DEVTOOLS == "Mono":
            _xbuild = "xbuild"
            _config = "{0}Mono".format(CONFIG)
        else:
            raise NotImplementedError(
                "DevTool {0} not supported (use MsDev/Mono)".format(DEVTOOLS))

        cmd = [
            _xbuild,
            'pythonnet.sln',
            '/p:Configuration={}'.format(_config),
            '/p:Platform={}'.format(ARCH),
            '/p:DefineConstants="{}"'.format(','.join(defines)),
            '/p:PythonBuildDir="{}"'.format(os.path.abspath(dest_dir)),
            '/p:PythonInteropFile="{}"'.format(os.path.basename(interop_file)),
            '/verbosity:{}'.format(VERBOSITY),
        ]

        manifest = self._get_manifest(dest_dir)
        if manifest:
            cmd.append('/p:PythonManifest="{0}"'.format(manifest))

        self.debug_print("Building: {0}".format(" ".join(cmd)))
        use_shell = True if DEVTOOLS == "Mono" else False
        subprocess.check_call(" ".join(cmd + ["/t:Clean"]), shell=use_shell)
        subprocess.check_call(" ".join(cmd + ["/t:Build"]), shell=use_shell)

        if DEVTOOLS == "Mono":
            self._build_monoclr()

    def _get_manifest(self, build_dir):
        if DEVTOOLS != "MsDev":
            return
        mt = self._find_msbuild_tool("mt.exe", use_windows_sdk=True)
        manifest = os.path.abspath(os.path.join(build_dir, "app.manifest"))
        cmd = [mt, '-inputresource:"{0}"'.format(sys.executable),
               '-out:"{0}"'.format(manifest)]
        self.debug_print("Extracting manifest from {}".format(sys.executable))
        subprocess.check_call(" ".join(cmd), shell=False)
        return manifest

    def _build_monoclr(self):
        mono_libs = _check_output("pkg-config --libs mono-2", shell=True)
        mono_cflags = _check_output("pkg-config --cflags mono-2", shell=True)
        glib_libs = _check_output("pkg-config --libs glib-2.0", shell=True)
        glib_cflags = _check_output("pkg-config --cflags glib-2.0", shell=True)
        cflags = mono_cflags.strip() + " " + glib_cflags.strip()
        libs = mono_libs.strip() + " " + glib_libs.strip()

        # build the clr python module
        clr_ext = Extension(
            "clr",
            sources=[
                "src/monoclr/pynetinit.c",
                "src/monoclr/clrmod.c"
            ],
            extra_compile_args=cflags.split(" "),
            extra_link_args=libs.split(" ")
        )

        build_ext.build_ext.build_extension(self, clr_ext)

    def _install_packages(self):
        """install packages using nuget"""
        nuget = os.path.join("tools", "nuget", "nuget.exe")
        use_shell = False
        if DEVTOOLS == "Mono":
            nuget = "mono {0}".format(nuget)
            use_shell = True

        cmd = "{0} update -self".format(nuget)
        self.debug_print("Updating NuGet: {0}".format(cmd))
        subprocess.check_call(cmd, shell=use_shell)

        cmd = "{0} restore pythonnet.sln -o packages".format(nuget)
        self.debug_print("Installing packages: {0}".format(cmd))
        subprocess.check_call(cmd, shell=use_shell)

    def _find_msbuild_tool(self, tool="msbuild.exe", use_windows_sdk=False):
        """Return full path to one of the Microsoft build tools"""
        # Search in PATH first
        path = spawn.find_executable(tool)
        if path:
            return path

        # Search within registry to find build tools
        try:  # PY2
            import _winreg as winreg
        except ImportError:  # PY3
            import winreg

        keys_to_check = WIN_SDK_KEYS if use_windows_sdk else VS_KEYS
        hklm = winreg.HKEY_LOCAL_MACHINE
        for rkey in keys_to_check:
            try:
                with winreg.OpenKey(hklm, rkey.key) as hkey:
                    val, type_ = winreg.QueryValueEx(hkey, rkey.value_name)
                    if type_ != winreg.REG_SZ:
                        continue
                    path = os.path.join(val, rkey.suffix, tool)
                    if os.path.exists(path):
                        self.debug_print("Using {0} from {1}".format(
                            tool, rkey.sdk_name))
                        return path
            except WindowsError:
                # Key doesn't exist
                pass

        # Add Visual C++ for Python as a fall-back in case one
        # of the other Windows SDKs isn't installed.
        # TODO: Extend checking by using setuptools/msvc.py?
        if use_windows_sdk:
            sdk_name = "Visual C++ for Python"
            localappdata = os.environ["LOCALAPPDATA"]
            suffix = "Bin\\x64" if ARCH == "x64" else "Bin"
            path = os.path.join(localappdata, vs_python, suffix, tool)
            if os.path.exists(path):
                self.debug_print("Using {0} from {1}".format(tool, sdk_name))
                return path

        raise RuntimeError("{0} could not be found".format(tool))


class InstallLibPythonnet(install_lib.install_lib):
    def install(self):
        if not os.path.isdir(self.build_dir):
            self.warn("'{0}' does not exist -- no Python modules"
                      " to install".format(self.build_dir))
            return

        if not os.path.exists(self.install_dir):
            self.mkpath(self.install_dir)

        # only copy clr.pyd/.so
        for srcfile in glob.glob(os.path.join(self.build_dir, "clr.*")):
            destfile = os.path.join(
                self.install_dir, os.path.basename(srcfile))
            self.copy_file(srcfile, destfile)


class InstallDataPythonnet(install_data.install_data):
    def run(self):
        build_cmd = self.get_finalized_command("build_ext")
        install_cmd = self.get_finalized_command("install")
        build_lib = os.path.abspath(build_cmd.build_lib)
        install_platlib = os.path.relpath(
            install_cmd.install_platlib, self.install_dir)

        for i, data_files in enumerate(self.data_files):
            if isinstance(data_files, str):
                self.data_files[i] = data_files[i].format(build_lib=build_lib)
            else:
                for j, filename in enumerate(data_files[1]):
                    data_files[1][j] = filename.format(build_lib=build_lib)
                dest = data_files[0].format(install_platlib=install_platlib)
                self.data_files[i] = dest, data_files[1]

        return install_data.install_data.run(self)


###############################################################################
setupdir = os.path.dirname(__file__)
if setupdir:
    os.chdir(setupdir)

setup_requires = []
if not os.path.exists(_get_interop_filename()):
    setup_requires.append("pycparser")

setup(
    name="pythonnet",
    version="2.4.0.dev0",
    description=".Net and Mono integration for Python",
    url='https://pythonnet.github.io/',
    license='MIT',
    author="The Python for .Net developers",
    author_email="pythondotnet@python.org",
    setup_requires=setup_requires,
    long_description=_get_long_description(),
    ext_modules=[
        Extension("clr", sources=list(_get_source_files()))
    ],
    data_files=[
        ("{install_platlib}", [
            "{build_lib}/Python.Runtime.dll",
        ]),
    ],
    cmdclass={
        "build_ext": BuildExtPythonnet,
        "install_lib": InstallLibPythonnet,
        "install_data": InstallDataPythonnet,
    },
    classifiers=[
        'Development Status :: 5 - Production/Stable',
        'Intended Audience :: Developers',
        'License :: OSI Approved :: MIT License',
        'Programming Language :: C#',
        'Programming Language :: Python :: 2',
        'Programming Language :: Python :: 2.7',
        'Programming Language :: Python :: 3',
        'Programming Language :: Python :: 3.3',
        'Programming Language :: Python :: 3.4',
        'Programming Language :: Python :: 3.5',
        'Programming Language :: Python :: 3.6',
        'Operating System :: Microsoft :: Windows',
        'Operating System :: POSIX :: Linux',
        'Operating System :: MacOS :: MacOS X',
    ],
    zip_safe=False,
)