573 lines
19 KiB
Python
573 lines
19 KiB
Python
"""distutils._msvccompiler
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Contains MSVCCompiler, an implementation of the abstract CCompiler class
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for Microsoft Visual Studio 2015.
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The module is compatible with VS 2015 and later. You can find legacy support
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for older versions in distutils.msvc9compiler and distutils.msvccompiler.
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"""
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# Written by Perry Stoll
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# hacked by Robin Becker and Thomas Heller to do a better job of
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# finding DevStudio (through the registry)
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# ported to VS 2005 and VS 2008 by Christian Heimes
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# ported to VS 2015 by Steve Dower
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import os
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import subprocess
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import contextlib
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import warnings
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import unittest.mock as mock
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with contextlib.suppress(ImportError):
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import winreg
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from .errors import (
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DistutilsExecError,
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DistutilsPlatformError,
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CompileError,
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LibError,
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LinkError,
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)
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from .ccompiler import CCompiler, gen_lib_options
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from ._log import log
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from .util import get_platform
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from itertools import count
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def _find_vc2015():
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try:
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key = winreg.OpenKeyEx(
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winreg.HKEY_LOCAL_MACHINE,
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r"Software\Microsoft\VisualStudio\SxS\VC7",
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access=winreg.KEY_READ | winreg.KEY_WOW64_32KEY,
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)
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except OSError:
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log.debug("Visual C++ is not registered")
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return None, None
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best_version = 0
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best_dir = None
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with key:
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for i in count():
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try:
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v, vc_dir, vt = winreg.EnumValue(key, i)
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except OSError:
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break
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if v and vt == winreg.REG_SZ and os.path.isdir(vc_dir):
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try:
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version = int(float(v))
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except (ValueError, TypeError):
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continue
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if version >= 14 and version > best_version:
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best_version, best_dir = version, vc_dir
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return best_version, best_dir
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def _find_vc2017():
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"""Returns "15, path" based on the result of invoking vswhere.exe
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If no install is found, returns "None, None"
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The version is returned to avoid unnecessarily changing the function
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result. It may be ignored when the path is not None.
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If vswhere.exe is not available, by definition, VS 2017 is not
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installed.
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"""
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root = os.environ.get("ProgramFiles(x86)") or os.environ.get("ProgramFiles")
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if not root:
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return None, None
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try:
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path = subprocess.check_output(
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[
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os.path.join(
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root, "Microsoft Visual Studio", "Installer", "vswhere.exe"
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),
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"-latest",
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"-prerelease",
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"-requires",
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"Microsoft.VisualStudio.Component.VC.Tools.x86.x64",
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"-property",
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"installationPath",
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"-products",
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"*",
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],
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encoding="mbcs",
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errors="strict",
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).strip()
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except (subprocess.CalledProcessError, OSError, UnicodeDecodeError):
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return None, None
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path = os.path.join(path, "VC", "Auxiliary", "Build")
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if os.path.isdir(path):
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return 15, path
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return None, None
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PLAT_SPEC_TO_RUNTIME = {
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'x86': 'x86',
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'x86_amd64': 'x64',
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'x86_arm': 'arm',
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'x86_arm64': 'arm64',
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}
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def _find_vcvarsall(plat_spec):
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# bpo-38597: Removed vcruntime return value
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_, best_dir = _find_vc2017()
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if not best_dir:
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best_version, best_dir = _find_vc2015()
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if not best_dir:
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log.debug("No suitable Visual C++ version found")
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return None, None
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vcvarsall = os.path.join(best_dir, "vcvarsall.bat")
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if not os.path.isfile(vcvarsall):
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log.debug("%s cannot be found", vcvarsall)
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return None, None
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return vcvarsall, None
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def _get_vc_env(plat_spec):
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if os.getenv("DISTUTILS_USE_SDK"):
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return {key.lower(): value for key, value in os.environ.items()}
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vcvarsall, _ = _find_vcvarsall(plat_spec)
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if not vcvarsall:
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raise DistutilsPlatformError("Unable to find vcvarsall.bat")
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try:
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out = subprocess.check_output(
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f'cmd /u /c "{vcvarsall}" {plat_spec} && set',
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stderr=subprocess.STDOUT,
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).decode('utf-16le', errors='replace')
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except subprocess.CalledProcessError as exc:
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log.error(exc.output)
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raise DistutilsPlatformError(f"Error executing {exc.cmd}")
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env = {
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key.lower(): value
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for key, _, value in (line.partition('=') for line in out.splitlines())
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if key and value
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}
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return env
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def _find_exe(exe, paths=None):
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"""Return path to an MSVC executable program.
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Tries to find the program in several places: first, one of the
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MSVC program search paths from the registry; next, the directories
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in the PATH environment variable. If any of those work, return an
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absolute path that is known to exist. If none of them work, just
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return the original program name, 'exe'.
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"""
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if not paths:
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paths = os.getenv('path').split(os.pathsep)
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for p in paths:
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fn = os.path.join(os.path.abspath(p), exe)
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if os.path.isfile(fn):
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return fn
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return exe
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# A map keyed by get_platform() return values to values accepted by
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# 'vcvarsall.bat'. Always cross-compile from x86 to work with the
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# lighter-weight MSVC installs that do not include native 64-bit tools.
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PLAT_TO_VCVARS = {
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'win32': 'x86',
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'win-amd64': 'x86_amd64',
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'win-arm32': 'x86_arm',
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'win-arm64': 'x86_arm64',
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}
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class MSVCCompiler(CCompiler):
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"""Concrete class that implements an interface to Microsoft Visual C++,
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as defined by the CCompiler abstract class."""
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compiler_type = 'msvc'
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# Just set this so CCompiler's constructor doesn't barf. We currently
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# don't use the 'set_executables()' bureaucracy provided by CCompiler,
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# as it really isn't necessary for this sort of single-compiler class.
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# Would be nice to have a consistent interface with UnixCCompiler,
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# though, so it's worth thinking about.
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executables = {}
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# Private class data (need to distinguish C from C++ source for compiler)
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_c_extensions = ['.c']
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_cpp_extensions = ['.cc', '.cpp', '.cxx']
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_rc_extensions = ['.rc']
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_mc_extensions = ['.mc']
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# Needed for the filename generation methods provided by the
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# base class, CCompiler.
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src_extensions = _c_extensions + _cpp_extensions + _rc_extensions + _mc_extensions
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res_extension = '.res'
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obj_extension = '.obj'
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static_lib_extension = '.lib'
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shared_lib_extension = '.dll'
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static_lib_format = shared_lib_format = '%s%s'
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exe_extension = '.exe'
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def __init__(self, verbose=0, dry_run=0, force=0):
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super().__init__(verbose, dry_run, force)
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# target platform (.plat_name is consistent with 'bdist')
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self.plat_name = None
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self.initialized = False
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@classmethod
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def _configure(cls, vc_env):
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"""
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Set class-level include/lib dirs.
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"""
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cls.include_dirs = cls._parse_path(vc_env.get('include', ''))
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cls.library_dirs = cls._parse_path(vc_env.get('lib', ''))
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@staticmethod
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def _parse_path(val):
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return [dir.rstrip(os.sep) for dir in val.split(os.pathsep) if dir]
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def initialize(self, plat_name=None):
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# multi-init means we would need to check platform same each time...
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assert not self.initialized, "don't init multiple times"
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if plat_name is None:
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plat_name = get_platform()
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# sanity check for platforms to prevent obscure errors later.
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if plat_name not in PLAT_TO_VCVARS:
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raise DistutilsPlatformError(
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f"--plat-name must be one of {tuple(PLAT_TO_VCVARS)}"
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)
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# Get the vcvarsall.bat spec for the requested platform.
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plat_spec = PLAT_TO_VCVARS[plat_name]
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vc_env = _get_vc_env(plat_spec)
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if not vc_env:
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raise DistutilsPlatformError(
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"Unable to find a compatible " "Visual Studio installation."
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)
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self._configure(vc_env)
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self._paths = vc_env.get('path', '')
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paths = self._paths.split(os.pathsep)
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self.cc = _find_exe("cl.exe", paths)
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self.linker = _find_exe("link.exe", paths)
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self.lib = _find_exe("lib.exe", paths)
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self.rc = _find_exe("rc.exe", paths) # resource compiler
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self.mc = _find_exe("mc.exe", paths) # message compiler
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self.mt = _find_exe("mt.exe", paths) # message compiler
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self.preprocess_options = None
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# bpo-38597: Always compile with dynamic linking
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# Future releases of Python 3.x will include all past
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# versions of vcruntime*.dll for compatibility.
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self.compile_options = ['/nologo', '/O2', '/W3', '/GL', '/DNDEBUG', '/MD']
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self.compile_options_debug = [
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'/nologo',
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'/Od',
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'/MDd',
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'/Zi',
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'/W3',
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'/D_DEBUG',
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]
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ldflags = ['/nologo', '/INCREMENTAL:NO', '/LTCG']
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ldflags_debug = ['/nologo', '/INCREMENTAL:NO', '/LTCG', '/DEBUG:FULL']
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self.ldflags_exe = [*ldflags, '/MANIFEST:EMBED,ID=1']
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self.ldflags_exe_debug = [*ldflags_debug, '/MANIFEST:EMBED,ID=1']
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self.ldflags_shared = [
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*ldflags,
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'/DLL',
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'/MANIFEST:EMBED,ID=2',
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'/MANIFESTUAC:NO',
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]
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self.ldflags_shared_debug = [
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*ldflags_debug,
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'/DLL',
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'/MANIFEST:EMBED,ID=2',
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'/MANIFESTUAC:NO',
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]
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self.ldflags_static = [*ldflags]
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self.ldflags_static_debug = [*ldflags_debug]
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self._ldflags = {
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(CCompiler.EXECUTABLE, None): self.ldflags_exe,
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(CCompiler.EXECUTABLE, False): self.ldflags_exe,
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(CCompiler.EXECUTABLE, True): self.ldflags_exe_debug,
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(CCompiler.SHARED_OBJECT, None): self.ldflags_shared,
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(CCompiler.SHARED_OBJECT, False): self.ldflags_shared,
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(CCompiler.SHARED_OBJECT, True): self.ldflags_shared_debug,
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(CCompiler.SHARED_LIBRARY, None): self.ldflags_static,
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(CCompiler.SHARED_LIBRARY, False): self.ldflags_static,
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(CCompiler.SHARED_LIBRARY, True): self.ldflags_static_debug,
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}
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self.initialized = True
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# -- Worker methods ------------------------------------------------
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@property
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def out_extensions(self):
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return {
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**super().out_extensions,
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**{
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ext: self.res_extension
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for ext in self._rc_extensions + self._mc_extensions
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},
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}
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def compile( # noqa: C901
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self,
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sources,
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output_dir=None,
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macros=None,
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include_dirs=None,
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debug=0,
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extra_preargs=None,
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extra_postargs=None,
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depends=None,
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):
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if not self.initialized:
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self.initialize()
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compile_info = self._setup_compile(
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output_dir, macros, include_dirs, sources, depends, extra_postargs
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)
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macros, objects, extra_postargs, pp_opts, build = compile_info
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compile_opts = extra_preargs or []
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compile_opts.append('/c')
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if debug:
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compile_opts.extend(self.compile_options_debug)
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else:
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compile_opts.extend(self.compile_options)
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add_cpp_opts = False
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for obj in objects:
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try:
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src, ext = build[obj]
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except KeyError:
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continue
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if debug:
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# pass the full pathname to MSVC in debug mode,
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# this allows the debugger to find the source file
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# without asking the user to browse for it
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src = os.path.abspath(src)
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if ext in self._c_extensions:
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input_opt = "/Tc" + src
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elif ext in self._cpp_extensions:
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input_opt = "/Tp" + src
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add_cpp_opts = True
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elif ext in self._rc_extensions:
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# compile .RC to .RES file
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input_opt = src
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output_opt = "/fo" + obj
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try:
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self.spawn([self.rc] + pp_opts + [output_opt, input_opt])
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except DistutilsExecError as msg:
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raise CompileError(msg)
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continue
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elif ext in self._mc_extensions:
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# Compile .MC to .RC file to .RES file.
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# * '-h dir' specifies the directory for the
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# generated include file
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# * '-r dir' specifies the target directory of the
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# generated RC file and the binary message resource
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# it includes
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#
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# For now (since there are no options to change this),
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# we use the source-directory for the include file and
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# the build directory for the RC file and message
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# resources. This works at least for win32all.
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h_dir = os.path.dirname(src)
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rc_dir = os.path.dirname(obj)
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try:
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# first compile .MC to .RC and .H file
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self.spawn([self.mc, '-h', h_dir, '-r', rc_dir, src])
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base, _ = os.path.splitext(os.path.basename(src))
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rc_file = os.path.join(rc_dir, base + '.rc')
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# then compile .RC to .RES file
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self.spawn([self.rc, "/fo" + obj, rc_file])
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except DistutilsExecError as msg:
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raise CompileError(msg)
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continue
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else:
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# how to handle this file?
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raise CompileError(f"Don't know how to compile {src} to {obj}")
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args = [self.cc] + compile_opts + pp_opts
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if add_cpp_opts:
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args.append('/EHsc')
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args.append(input_opt)
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args.append("/Fo" + obj)
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args.extend(extra_postargs)
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try:
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self.spawn(args)
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except DistutilsExecError as msg:
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raise CompileError(msg)
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return objects
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def create_static_lib(
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self, objects, output_libname, output_dir=None, debug=0, target_lang=None
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):
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if not self.initialized:
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self.initialize()
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objects, output_dir = self._fix_object_args(objects, output_dir)
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output_filename = self.library_filename(output_libname, output_dir=output_dir)
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if self._need_link(objects, output_filename):
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lib_args = objects + ['/OUT:' + output_filename]
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if debug:
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pass # XXX what goes here?
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try:
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log.debug('Executing "%s" %s', self.lib, ' '.join(lib_args))
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self.spawn([self.lib] + lib_args)
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except DistutilsExecError as msg:
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raise LibError(msg)
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else:
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log.debug("skipping %s (up-to-date)", output_filename)
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def link(
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self,
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target_desc,
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objects,
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output_filename,
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output_dir=None,
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libraries=None,
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library_dirs=None,
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runtime_library_dirs=None,
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export_symbols=None,
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debug=0,
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extra_preargs=None,
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extra_postargs=None,
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build_temp=None,
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target_lang=None,
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):
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if not self.initialized:
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self.initialize()
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objects, output_dir = self._fix_object_args(objects, output_dir)
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fixed_args = self._fix_lib_args(libraries, library_dirs, runtime_library_dirs)
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libraries, library_dirs, runtime_library_dirs = fixed_args
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if runtime_library_dirs:
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self.warn(
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"I don't know what to do with 'runtime_library_dirs': "
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+ str(runtime_library_dirs)
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)
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lib_opts = gen_lib_options(self, library_dirs, runtime_library_dirs, libraries)
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if output_dir is not None:
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output_filename = os.path.join(output_dir, output_filename)
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if self._need_link(objects, output_filename):
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ldflags = self._ldflags[target_desc, debug]
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export_opts = ["/EXPORT:" + sym for sym in (export_symbols or [])]
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ld_args = (
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ldflags + lib_opts + export_opts + objects + ['/OUT:' + output_filename]
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)
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# The MSVC linker generates .lib and .exp files, which cannot be
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# suppressed by any linker switches. The .lib files may even be
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# needed! Make sure they are generated in the temporary build
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# directory. Since they have different names for debug and release
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# builds, they can go into the same directory.
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build_temp = os.path.dirname(objects[0])
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if export_symbols is not None:
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(dll_name, dll_ext) = os.path.splitext(
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os.path.basename(output_filename)
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)
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implib_file = os.path.join(build_temp, self.library_filename(dll_name))
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ld_args.append('/IMPLIB:' + implib_file)
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if extra_preargs:
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ld_args[:0] = extra_preargs
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if extra_postargs:
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ld_args.extend(extra_postargs)
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output_dir = os.path.dirname(os.path.abspath(output_filename))
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self.mkpath(output_dir)
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try:
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log.debug('Executing "%s" %s', self.linker, ' '.join(ld_args))
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self.spawn([self.linker] + ld_args)
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except DistutilsExecError as msg:
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raise LinkError(msg)
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else:
|
|
log.debug("skipping %s (up-to-date)", output_filename)
|
|
|
|
def spawn(self, cmd):
|
|
env = dict(os.environ, PATH=self._paths)
|
|
with self._fallback_spawn(cmd, env) as fallback:
|
|
return super().spawn(cmd, env=env)
|
|
return fallback.value
|
|
|
|
@contextlib.contextmanager
|
|
def _fallback_spawn(self, cmd, env):
|
|
"""
|
|
Discovered in pypa/distutils#15, some tools monkeypatch the compiler,
|
|
so the 'env' kwarg causes a TypeError. Detect this condition and
|
|
restore the legacy, unsafe behavior.
|
|
"""
|
|
bag = type('Bag', (), {})()
|
|
try:
|
|
yield bag
|
|
except TypeError as exc:
|
|
if "unexpected keyword argument 'env'" not in str(exc):
|
|
raise
|
|
else:
|
|
return
|
|
warnings.warn("Fallback spawn triggered. Please update distutils monkeypatch.")
|
|
with mock.patch.dict('os.environ', env):
|
|
bag.value = super().spawn(cmd)
|
|
|
|
# -- Miscellaneous methods -----------------------------------------
|
|
# These are all used by the 'gen_lib_options() function, in
|
|
# ccompiler.py.
|
|
|
|
def library_dir_option(self, dir):
|
|
return "/LIBPATH:" + dir
|
|
|
|
def runtime_library_dir_option(self, dir):
|
|
raise DistutilsPlatformError(
|
|
"don't know how to set runtime library search path for MSVC"
|
|
)
|
|
|
|
def library_option(self, lib):
|
|
return self.library_filename(lib)
|
|
|
|
def find_library_file(self, dirs, lib, debug=0):
|
|
# Prefer a debugging library if found (and requested), but deal
|
|
# with it if we don't have one.
|
|
if debug:
|
|
try_names = [lib + "_d", lib]
|
|
else:
|
|
try_names = [lib]
|
|
for dir in dirs:
|
|
for name in try_names:
|
|
libfile = os.path.join(dir, self.library_filename(name))
|
|
if os.path.isfile(libfile):
|
|
return libfile
|
|
else:
|
|
# Oops, didn't find it in *any* of 'dirs'
|
|
return None
|