mirror of https://github.com/python/cpython
562 lines
21 KiB
Python
562 lines
21 KiB
Python
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"""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 re
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from distutils.errors import DistutilsExecError, DistutilsPlatformError, \
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CompileError, LibError, LinkError
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from distutils.ccompiler import CCompiler, gen_lib_options
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from distutils import log
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from distutils.util import get_platform
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import winreg
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from itertools import count
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def _find_vcvarsall():
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with 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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) as key:
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if not key:
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log.debug("Visual C++ is not registered")
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return None
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best_version = 0
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best_dir = None
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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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if not best_version:
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log.debug("No suitable Visual C++ version found")
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return 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
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return vcvarsall
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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 {
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key.lower(): value
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for key, value in os.environ.items()
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}
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vcvarsall = _find_vcvarsall()
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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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'"{}" {} && set'.format(vcvarsall, plat_spec),
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shell=True,
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stderr=subprocess.STDOUT,
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universal_newlines=True,
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)
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except subprocess.CalledProcessError as exc:
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log.error(exc.output)
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raise DistutilsPlatformError("Error executing {}"
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.format(exc.cmd))
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return {
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key.lower(): value
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for key, _, value in
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(line.partition('=') for line in out.splitlines())
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if key and value
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}
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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'. Note a cross-compile may combine these (eg, 'x86_amd64' is
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# the param to cross-compile on x86 targetting amd64.)
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PLAT_TO_VCVARS = {
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'win32' : 'x86',
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'win-amd64' : 'amd64',
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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 +
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_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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CCompiler.__init__ (self, 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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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("--plat-name must be one of {}"
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.format(tuple(PLAT_TO_VCVARS)))
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# On x86, 'vcvarsall.bat amd64' creates an env that doesn't work;
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# to cross compile, you use 'x86_amd64'.
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# On AMD64, 'vcvarsall.bat amd64' is a native build env; to cross
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# compile use 'x86' (ie, it runs the x86 compiler directly)
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if plat_name == get_platform() or plat_name == 'win32':
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# native build or cross-compile to win32
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plat_spec = PLAT_TO_VCVARS[plat_name]
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else:
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# cross compile from win32 -> some 64bit
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plat_spec = '{}_{}'.format(
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PLAT_TO_VCVARS[get_platform()],
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PLAT_TO_VCVARS[plat_name]
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)
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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("Unable to find a compatible "
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"Visual Studio installation.")
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paths = vc_env.get('path', '').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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for dir in vc_env.get('include', '').split(os.pathsep):
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if dir:
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self.add_include_dir(dir)
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for dir in vc_env.get('lib', '').split(os.pathsep):
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if dir:
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self.add_library_dir(dir)
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self.preprocess_options = None
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self.compile_options = [
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'/nologo', '/Ox', '/MD', '/W3', '/GL', '/DNDEBUG'
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]
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self.compile_options_debug = [
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'/nologo', '/Od', '/MDd', '/Zi', '/W3', '/D_DEBUG'
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]
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self.ldflags_shared = [
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'/nologo', '/DLL', '/INCREMENTAL:NO'
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]
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self.ldflags_shared_debug = [
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'/nologo', '/DLL', '/INCREMENTAL:no', '/DEBUG:FULL'
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]
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self.ldflags_static = [
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'/nologo'
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]
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self.initialized = True
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# -- Worker methods ------------------------------------------------
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def object_filenames(self,
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source_filenames,
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strip_dir=0,
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output_dir=''):
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ext_map = {ext: self.obj_extension for ext in self.src_extensions}
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ext_map.update((ext, self.res_extension)
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for ext in self._rc_extensions + self._mc_extensions)
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def make_out_path(p):
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base, ext = os.path.splitext(p)
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if strip_dir:
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base = os.path.basename(base)
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else:
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_, base = os.path.splitdrive(base)
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if base.startswith((os.path.sep, os.path.altsep)):
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base = base[1:]
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try:
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return base + ext_map[ext]
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except LookupError:
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# Better to raise an exception instead of silently continuing
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# and later complain about sources and targets having
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# different lengths
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raise CompileError("Don't know how to compile {}".format(p))
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output_dir = output_dir or ''
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return [
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os.path.join(output_dir, make_out_path(src_name))
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for src_name in source_filenames
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]
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def compile(self, sources,
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output_dir=None, macros=None, include_dirs=None, debug=0,
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extra_preargs=None, extra_postargs=None, depends=None):
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if not self.initialized:
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self.initialize()
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compile_info = self._setup_compile(output_dir, macros, include_dirs,
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sources, depends, extra_postargs)
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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("Don't know how to compile {} to {}"
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.format(src, 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(self,
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objects,
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output_libname,
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output_dir=None,
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debug=0,
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target_lang=None):
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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,
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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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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(self,
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target_desc,
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objects,
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||
|
|
output_filename,
|
||
|
|
output_dir=None,
|
||
|
|
libraries=None,
|
||
|
|
library_dirs=None,
|
||
|
|
runtime_library_dirs=None,
|
||
|
|
export_symbols=None,
|
||
|
|
debug=0,
|
||
|
|
extra_preargs=None,
|
||
|
|
extra_postargs=None,
|
||
|
|
build_temp=None,
|
||
|
|
target_lang=None):
|
||
|
|
|
||
|
|
if not self.initialized:
|
||
|
|
self.initialize()
|
||
|
|
objects, output_dir = self._fix_object_args(objects, output_dir)
|
||
|
|
fixed_args = self._fix_lib_args(libraries, library_dirs,
|
||
|
|
runtime_library_dirs)
|
||
|
|
libraries, library_dirs, runtime_library_dirs = fixed_args
|
||
|
|
|
||
|
|
if runtime_library_dirs:
|
||
|
|
self.warn("I don't know what to do with 'runtime_library_dirs': "
|
||
|
|
+ str(runtime_library_dirs))
|
||
|
|
|
||
|
|
lib_opts = gen_lib_options(self,
|
||
|
|
library_dirs, runtime_library_dirs,
|
||
|
|
libraries)
|
||
|
|
if output_dir is not None:
|
||
|
|
output_filename = os.path.join(output_dir, output_filename)
|
||
|
|
|
||
|
|
if self._need_link(objects, output_filename):
|
||
|
|
ldflags = (self.ldflags_shared_debug if debug
|
||
|
|
else self.ldflags_shared)
|
||
|
|
if target_desc == CCompiler.EXECUTABLE:
|
||
|
|
ldflags = ldflags[1:]
|
||
|
|
|
||
|
|
export_opts = []
|
||
|
|
for sym in (export_symbols or []):
|
||
|
|
export_opts.append("/EXPORT:" + sym)
|
||
|
|
|
||
|
|
ld_args = (ldflags + lib_opts + export_opts +
|
||
|
|
objects + ['/OUT:' + output_filename])
|
||
|
|
|
||
|
|
# The MSVC linker generates .lib and .exp files, which cannot be
|
||
|
|
# suppressed by any linker switches. The .lib files may even be
|
||
|
|
# needed! Make sure they are generated in the temporary build
|
||
|
|
# directory. Since they have different names for debug and release
|
||
|
|
# builds, they can go into the same directory.
|
||
|
|
build_temp = os.path.dirname(objects[0])
|
||
|
|
if export_symbols is not None:
|
||
|
|
(dll_name, dll_ext) = os.path.splitext(
|
||
|
|
os.path.basename(output_filename))
|
||
|
|
implib_file = os.path.join(
|
||
|
|
build_temp,
|
||
|
|
self.library_filename(dll_name))
|
||
|
|
ld_args.append ('/IMPLIB:' + implib_file)
|
||
|
|
|
||
|
|
self.manifest_setup_ldargs(output_filename, build_temp, ld_args)
|
||
|
|
|
||
|
|
if extra_preargs:
|
||
|
|
ld_args[:0] = extra_preargs
|
||
|
|
if extra_postargs:
|
||
|
|
ld_args.extend(extra_postargs)
|
||
|
|
|
||
|
|
self.mkpath(os.path.dirname(output_filename))
|
||
|
|
try:
|
||
|
|
self.spawn([self.linker] + ld_args)
|
||
|
|
except DistutilsExecError as msg:
|
||
|
|
raise LinkError(msg)
|
||
|
|
|
||
|
|
# embed the manifest
|
||
|
|
# XXX - this is somewhat fragile - if mt.exe fails, distutils
|
||
|
|
# will still consider the DLL up-to-date, but it will not have a
|
||
|
|
# manifest. Maybe we should link to a temp file? OTOH, that
|
||
|
|
# implies a build environment error that shouldn't go undetected.
|
||
|
|
mfinfo = self.manifest_get_embed_info(target_desc, ld_args)
|
||
|
|
if mfinfo is not None:
|
||
|
|
mffilename, mfid = mfinfo
|
||
|
|
out_arg = '-outputresource:{};{}'.format(output_filename, mfid)
|
||
|
|
try:
|
||
|
|
self.spawn([self.mt, '-nologo', '-manifest',
|
||
|
|
mffilename, out_arg])
|
||
|
|
except DistutilsExecError as msg:
|
||
|
|
raise LinkError(msg)
|
||
|
|
else:
|
||
|
|
log.debug("skipping %s (up-to-date)", output_filename)
|
||
|
|
|
||
|
|
def manifest_setup_ldargs(self, output_filename, build_temp, ld_args):
|
||
|
|
# If we need a manifest at all, an embedded manifest is recommended.
|
||
|
|
# See MSDN article titled
|
||
|
|
# "How to: Embed a Manifest Inside a C/C++ Application"
|
||
|
|
# (currently at http://msdn2.microsoft.com/en-us/library/ms235591(VS.80).aspx)
|
||
|
|
# Ask the linker to generate the manifest in the temp dir, so
|
||
|
|
# we can check it, and possibly embed it, later.
|
||
|
|
temp_manifest = os.path.join(
|
||
|
|
build_temp,
|
||
|
|
os.path.basename(output_filename) + ".manifest")
|
||
|
|
ld_args.append('/MANIFESTFILE:' + temp_manifest)
|
||
|
|
|
||
|
|
def manifest_get_embed_info(self, target_desc, ld_args):
|
||
|
|
# If a manifest should be embedded, return a tuple of
|
||
|
|
# (manifest_filename, resource_id). Returns None if no manifest
|
||
|
|
# should be embedded. See http://bugs.python.org/issue7833 for why
|
||
|
|
# we want to avoid any manifest for extension modules if we can)
|
||
|
|
for arg in ld_args:
|
||
|
|
if arg.startswith("/MANIFESTFILE:"):
|
||
|
|
temp_manifest = arg.split(":", 1)[1]
|
||
|
|
break
|
||
|
|
else:
|
||
|
|
# no /MANIFESTFILE so nothing to do.
|
||
|
|
return None
|
||
|
|
if target_desc == CCompiler.EXECUTABLE:
|
||
|
|
# by default, executables always get the manifest with the
|
||
|
|
# CRT referenced.
|
||
|
|
mfid = 1
|
||
|
|
else:
|
||
|
|
# Extension modules try and avoid any manifest if possible.
|
||
|
|
mfid = 2
|
||
|
|
temp_manifest = self._remove_visual_c_ref(temp_manifest)
|
||
|
|
if temp_manifest is None:
|
||
|
|
return None
|
||
|
|
return temp_manifest, mfid
|
||
|
|
|
||
|
|
def _remove_visual_c_ref(self, manifest_file):
|
||
|
|
try:
|
||
|
|
# Remove references to the Visual C runtime, so they will
|
||
|
|
# fall through to the Visual C dependency of Python.exe.
|
||
|
|
# This way, when installed for a restricted user (e.g.
|
||
|
|
# runtimes are not in WinSxS folder, but in Python's own
|
||
|
|
# folder), the runtimes do not need to be in every folder
|
||
|
|
# with .pyd's.
|
||
|
|
# Returns either the filename of the modified manifest or
|
||
|
|
# None if no manifest should be embedded.
|
||
|
|
manifest_f = open(manifest_file)
|
||
|
|
try:
|
||
|
|
manifest_buf = manifest_f.read()
|
||
|
|
finally:
|
||
|
|
manifest_f.close()
|
||
|
|
pattern = re.compile(
|
||
|
|
r"""<assemblyIdentity.*?name=("|')Microsoft\."""\
|
||
|
|
r"""VC\d{2}\.CRT("|').*?(/>|</assemblyIdentity>)""",
|
||
|
|
re.DOTALL)
|
||
|
|
manifest_buf = re.sub(pattern, "", manifest_buf)
|
||
|
|
pattern = "<dependentAssembly>\s*</dependentAssembly>"
|
||
|
|
manifest_buf = re.sub(pattern, "", manifest_buf)
|
||
|
|
# Now see if any other assemblies are referenced - if not, we
|
||
|
|
# don't want a manifest embedded.
|
||
|
|
pattern = re.compile(
|
||
|
|
r"""<assemblyIdentity.*?name=(?:"|')(.+?)(?:"|')"""
|
||
|
|
r""".*?(?:/>|</assemblyIdentity>)""", re.DOTALL)
|
||
|
|
if re.search(pattern, manifest_buf) is None:
|
||
|
|
return None
|
||
|
|
|
||
|
|
manifest_f = open(manifest_file, 'w')
|
||
|
|
try:
|
||
|
|
manifest_f.write(manifest_buf)
|
||
|
|
return manifest_file
|
||
|
|
finally:
|
||
|
|
manifest_f.close()
|
||
|
|
except OSError:
|
||
|
|
pass
|
||
|
|
|
||
|
|
# -- 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
|