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595 lines
22 KiB
595 lines
22 KiB
"""
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Support code for building Python extensions on Windows.
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# NT stuff
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# 1. Make sure libpython<version>.a exists for gcc. If not, build it.
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# 2. Force windows to use gcc (we're struggling with MSVC and g77 support)
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# 3. Force windows to use g77
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"""
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import os
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import platform
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import sys
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import subprocess
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import re
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import textwrap
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# Overwrite certain distutils.ccompiler functions:
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import numpy.distutils.ccompiler # noqa: F401
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from numpy.distutils import log
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# NT stuff
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# 1. Make sure libpython<version>.a exists for gcc. If not, build it.
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# 2. Force windows to use gcc (we're struggling with MSVC and g77 support)
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# --> this is done in numpy/distutils/ccompiler.py
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# 3. Force windows to use g77
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import distutils.cygwinccompiler
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from distutils.unixccompiler import UnixCCompiler
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from distutils.msvccompiler import get_build_version as get_build_msvc_version
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from distutils.errors import UnknownFileError
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from numpy.distutils.misc_util import (msvc_runtime_library,
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msvc_runtime_version,
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msvc_runtime_major,
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get_build_architecture)
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def get_msvcr_replacement():
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"""Replacement for outdated version of get_msvcr from cygwinccompiler"""
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msvcr = msvc_runtime_library()
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return [] if msvcr is None else [msvcr]
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# Useful to generate table of symbols from a dll
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_START = re.compile(r'\[Ordinal/Name Pointer\] Table')
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_TABLE = re.compile(r'^\s+\[([\s*[0-9]*)\] ([a-zA-Z0-9_]*)')
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# the same as cygwin plus some additional parameters
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class Mingw32CCompiler(distutils.cygwinccompiler.CygwinCCompiler):
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""" A modified MingW32 compiler compatible with an MSVC built Python.
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"""
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compiler_type = 'mingw32'
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def __init__ (self,
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verbose=0,
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dry_run=0,
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force=0):
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distutils.cygwinccompiler.CygwinCCompiler.__init__ (self, verbose,
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dry_run, force)
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# **changes: eric jones 4/11/01
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# 1. Check for import library on Windows. Build if it doesn't exist.
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build_import_library()
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# Check for custom msvc runtime library on Windows. Build if it doesn't exist.
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msvcr_success = build_msvcr_library()
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msvcr_dbg_success = build_msvcr_library(debug=True)
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if msvcr_success or msvcr_dbg_success:
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# add preprocessor statement for using customized msvcr lib
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self.define_macro('NPY_MINGW_USE_CUSTOM_MSVCR')
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# Define the MSVC version as hint for MinGW
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msvcr_version = msvc_runtime_version()
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if msvcr_version:
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self.define_macro('__MSVCRT_VERSION__', '0x%04i' % msvcr_version)
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# MS_WIN64 should be defined when building for amd64 on windows,
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# but python headers define it only for MS compilers, which has all
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# kind of bad consequences, like using Py_ModuleInit4 instead of
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# Py_ModuleInit4_64, etc... So we add it here
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if get_build_architecture() == 'AMD64':
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self.set_executables(
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compiler='gcc -g -DDEBUG -DMS_WIN64 -O0 -Wall',
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compiler_so='gcc -g -DDEBUG -DMS_WIN64 -O0 -Wall '
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'-Wstrict-prototypes',
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linker_exe='gcc -g',
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linker_so='gcc -g -shared')
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else:
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self.set_executables(
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compiler='gcc -O2 -Wall',
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compiler_so='gcc -O2 -Wall -Wstrict-prototypes',
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linker_exe='g++ ',
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linker_so='g++ -shared')
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# added for python2.3 support
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# we can't pass it through set_executables because pre 2.2 would fail
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self.compiler_cxx = ['g++']
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# Maybe we should also append -mthreads, but then the finished dlls
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# need another dll (mingwm10.dll see Mingw32 docs) (-mthreads: Support
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# thread-safe exception handling on `Mingw32')
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# no additional libraries needed
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#self.dll_libraries=[]
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return
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# __init__ ()
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def link(self,
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target_desc,
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objects,
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output_filename,
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output_dir,
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libraries,
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library_dirs,
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runtime_library_dirs,
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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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# Include the appropriate MSVC runtime library if Python was built
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# with MSVC >= 7.0 (MinGW standard is msvcrt)
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runtime_library = msvc_runtime_library()
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if runtime_library:
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if not libraries:
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libraries = []
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libraries.append(runtime_library)
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args = (self,
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target_desc,
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objects,
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output_filename,
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output_dir,
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libraries,
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library_dirs,
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runtime_library_dirs,
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None, #export_symbols, we do this in our def-file
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debug,
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extra_preargs,
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extra_postargs,
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build_temp,
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target_lang)
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func = UnixCCompiler.link
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func(*args[:func.__code__.co_argcount])
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return
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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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if output_dir is None: output_dir = ''
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obj_names = []
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for src_name in source_filenames:
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# use normcase to make sure '.rc' is really '.rc' and not '.RC'
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(base, ext) = os.path.splitext (os.path.normcase(src_name))
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# added these lines to strip off windows drive letters
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# without it, .o files are placed next to .c files
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# instead of the build directory
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drv, base = os.path.splitdrive(base)
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if drv:
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base = base[1:]
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if ext not in (self.src_extensions + ['.rc', '.res']):
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raise UnknownFileError(
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"unknown file type '%s' (from '%s')" % \
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(ext, src_name))
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if strip_dir:
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base = os.path.basename (base)
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if ext == '.res' or ext == '.rc':
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# these need to be compiled to object files
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obj_names.append (os.path.join (output_dir,
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base + ext + self.obj_extension))
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else:
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obj_names.append (os.path.join (output_dir,
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base + self.obj_extension))
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return obj_names
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# object_filenames ()
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def find_python_dll():
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# We can't do much here:
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# - find it in the virtualenv (sys.prefix)
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# - find it in python main dir (sys.base_prefix, if in a virtualenv)
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# - sys.real_prefix is main dir for virtualenvs in Python 2.7
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# - in system32,
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# - ortherwise (Sxs), I don't know how to get it.
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stems = [sys.prefix]
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if hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix:
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stems.append(sys.base_prefix)
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elif hasattr(sys, 'real_prefix') and sys.real_prefix != sys.prefix:
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stems.append(sys.real_prefix)
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sub_dirs = ['', 'lib', 'bin']
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# generate possible combinations of directory trees and sub-directories
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lib_dirs = []
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for stem in stems:
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for folder in sub_dirs:
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lib_dirs.append(os.path.join(stem, folder))
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# add system directory as well
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if 'SYSTEMROOT' in os.environ:
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lib_dirs.append(os.path.join(os.environ['SYSTEMROOT'], 'System32'))
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# search in the file system for possible candidates
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major_version, minor_version = tuple(sys.version_info[:2])
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implementation = platform.python_implementation()
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if implementation == 'CPython':
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dllname = f'python{major_version}{minor_version}.dll'
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elif implementation == 'PyPy':
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dllname = f'libpypy{major_version}-c.dll'
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else:
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dllname = f'Unknown platform {implementation}'
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print("Looking for %s" % dllname)
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for folder in lib_dirs:
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dll = os.path.join(folder, dllname)
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if os.path.exists(dll):
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return dll
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raise ValueError("%s not found in %s" % (dllname, lib_dirs))
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def dump_table(dll):
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st = subprocess.check_output(["objdump.exe", "-p", dll])
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return st.split(b'\n')
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def generate_def(dll, dfile):
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"""Given a dll file location, get all its exported symbols and dump them
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into the given def file.
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The .def file will be overwritten"""
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dump = dump_table(dll)
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for i in range(len(dump)):
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if _START.match(dump[i].decode()):
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break
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else:
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raise ValueError("Symbol table not found")
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syms = []
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for j in range(i+1, len(dump)):
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m = _TABLE.match(dump[j].decode())
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if m:
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syms.append((int(m.group(1).strip()), m.group(2)))
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else:
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break
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if len(syms) == 0:
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log.warn('No symbols found in %s' % dll)
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with open(dfile, 'w') as d:
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d.write('LIBRARY %s\n' % os.path.basename(dll))
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d.write(';CODE PRELOAD MOVEABLE DISCARDABLE\n')
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d.write(';DATA PRELOAD SINGLE\n')
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d.write('\nEXPORTS\n')
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for s in syms:
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#d.write('@%d %s\n' % (s[0], s[1]))
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d.write('%s\n' % s[1])
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def find_dll(dll_name):
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arch = {'AMD64' : 'amd64',
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'Intel' : 'x86'}[get_build_architecture()]
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def _find_dll_in_winsxs(dll_name):
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# Walk through the WinSxS directory to find the dll.
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winsxs_path = os.path.join(os.environ.get('WINDIR', r'C:\WINDOWS'),
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'winsxs')
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if not os.path.exists(winsxs_path):
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return None
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for root, dirs, files in os.walk(winsxs_path):
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if dll_name in files and arch in root:
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return os.path.join(root, dll_name)
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return None
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def _find_dll_in_path(dll_name):
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# First, look in the Python directory, then scan PATH for
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# the given dll name.
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for path in [sys.prefix] + os.environ['PATH'].split(';'):
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filepath = os.path.join(path, dll_name)
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if os.path.exists(filepath):
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return os.path.abspath(filepath)
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return _find_dll_in_winsxs(dll_name) or _find_dll_in_path(dll_name)
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def build_msvcr_library(debug=False):
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if os.name != 'nt':
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return False
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# If the version number is None, then we couldn't find the MSVC runtime at
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# all, because we are running on a Python distribution which is customed
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# compiled; trust that the compiler is the same as the one available to us
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# now, and that it is capable of linking with the correct runtime without
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# any extra options.
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msvcr_ver = msvc_runtime_major()
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if msvcr_ver is None:
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log.debug('Skip building import library: '
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'Runtime is not compiled with MSVC')
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return False
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# Skip using a custom library for versions < MSVC 8.0
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if msvcr_ver < 80:
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log.debug('Skip building msvcr library:'
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' custom functionality not present')
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return False
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msvcr_name = msvc_runtime_library()
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if debug:
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msvcr_name += 'd'
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# Skip if custom library already exists
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out_name = "lib%s.a" % msvcr_name
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out_file = os.path.join(sys.prefix, 'libs', out_name)
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if os.path.isfile(out_file):
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log.debug('Skip building msvcr library: "%s" exists' %
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(out_file,))
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return True
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# Find the msvcr dll
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msvcr_dll_name = msvcr_name + '.dll'
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dll_file = find_dll(msvcr_dll_name)
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if not dll_file:
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log.warn('Cannot build msvcr library: "%s" not found' %
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msvcr_dll_name)
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return False
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def_name = "lib%s.def" % msvcr_name
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def_file = os.path.join(sys.prefix, 'libs', def_name)
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log.info('Building msvcr library: "%s" (from %s)' \
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% (out_file, dll_file))
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# Generate a symbol definition file from the msvcr dll
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generate_def(dll_file, def_file)
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# Create a custom mingw library for the given symbol definitions
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cmd = ['dlltool', '-d', def_file, '-l', out_file]
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retcode = subprocess.call(cmd)
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# Clean up symbol definitions
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os.remove(def_file)
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return (not retcode)
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def build_import_library():
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if os.name != 'nt':
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return
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arch = get_build_architecture()
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if arch == 'AMD64':
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return _build_import_library_amd64()
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elif arch == 'Intel':
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return _build_import_library_x86()
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else:
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raise ValueError("Unhandled arch %s" % arch)
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def _check_for_import_lib():
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"""Check if an import library for the Python runtime already exists."""
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major_version, minor_version = tuple(sys.version_info[:2])
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# patterns for the file name of the library itself
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patterns = ['libpython%d%d.a',
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'libpython%d%d.dll.a',
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'libpython%d.%d.dll.a']
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# directory trees that may contain the library
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stems = [sys.prefix]
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if hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix:
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stems.append(sys.base_prefix)
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elif hasattr(sys, 'real_prefix') and sys.real_prefix != sys.prefix:
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stems.append(sys.real_prefix)
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# possible subdirectories within those trees where it is placed
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sub_dirs = ['libs', 'lib']
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# generate a list of candidate locations
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candidates = []
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for pat in patterns:
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filename = pat % (major_version, minor_version)
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for stem_dir in stems:
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for folder in sub_dirs:
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candidates.append(os.path.join(stem_dir, folder, filename))
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# test the filesystem to see if we can find any of these
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for fullname in candidates:
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if os.path.isfile(fullname):
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# already exists, in location given
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return (True, fullname)
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# needs to be built, preferred location given first
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return (False, candidates[0])
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def _build_import_library_amd64():
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out_exists, out_file = _check_for_import_lib()
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if out_exists:
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log.debug('Skip building import library: "%s" exists', out_file)
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return
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# get the runtime dll for which we are building import library
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dll_file = find_python_dll()
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log.info('Building import library (arch=AMD64): "%s" (from %s)' %
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(out_file, dll_file))
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# generate symbol list from this library
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def_name = "python%d%d.def" % tuple(sys.version_info[:2])
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def_file = os.path.join(sys.prefix, 'libs', def_name)
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generate_def(dll_file, def_file)
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# generate import library from this symbol list
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cmd = ['dlltool', '-d', def_file, '-l', out_file]
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subprocess.check_call(cmd)
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def _build_import_library_x86():
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""" Build the import libraries for Mingw32-gcc on Windows
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"""
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out_exists, out_file = _check_for_import_lib()
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if out_exists:
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log.debug('Skip building import library: "%s" exists', out_file)
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return
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lib_name = "python%d%d.lib" % tuple(sys.version_info[:2])
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lib_file = os.path.join(sys.prefix, 'libs', lib_name)
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if not os.path.isfile(lib_file):
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# didn't find library file in virtualenv, try base distribution, too,
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# and use that instead if found there. for Python 2.7 venvs, the base
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# directory is in attribute real_prefix instead of base_prefix.
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if hasattr(sys, 'base_prefix'):
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base_lib = os.path.join(sys.base_prefix, 'libs', lib_name)
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elif hasattr(sys, 'real_prefix'):
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base_lib = os.path.join(sys.real_prefix, 'libs', lib_name)
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else:
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base_lib = '' # os.path.isfile('') == False
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if os.path.isfile(base_lib):
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lib_file = base_lib
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else:
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log.warn('Cannot build import library: "%s" not found', lib_file)
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return
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log.info('Building import library (ARCH=x86): "%s"', out_file)
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from numpy.distutils import lib2def
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def_name = "python%d%d.def" % tuple(sys.version_info[:2])
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def_file = os.path.join(sys.prefix, 'libs', def_name)
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nm_output = lib2def.getnm(
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lib2def.DEFAULT_NM + [lib_file], shell=False)
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dlist, flist = lib2def.parse_nm(nm_output)
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with open(def_file, 'w') as fid:
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lib2def.output_def(dlist, flist, lib2def.DEF_HEADER, fid)
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dll_name = find_python_dll ()
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cmd = ["dlltool",
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"--dllname", dll_name,
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"--def", def_file,
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"--output-lib", out_file]
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status = subprocess.check_output(cmd)
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if status:
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log.warn('Failed to build import library for gcc. Linking will fail.')
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return
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#=====================================
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# Dealing with Visual Studio MANIFESTS
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#=====================================
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# Functions to deal with visual studio manifests. Manifest are a mechanism to
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|
# enforce strong DLL versioning on windows, and has nothing to do with
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# distutils MANIFEST. manifests are XML files with version info, and used by
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# the OS loader; they are necessary when linking against a DLL not in the
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# system path; in particular, official python 2.6 binary is built against the
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# MS runtime 9 (the one from VS 2008), which is not available on most windows
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# systems; python 2.6 installer does install it in the Win SxS (Side by side)
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# directory, but this requires the manifest for this to work. This is a big
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# mess, thanks MS for a wonderful system.
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# XXX: ideally, we should use exactly the same version as used by python. I
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# submitted a patch to get this version, but it was only included for python
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# 2.6.1 and above. So for versions below, we use a "best guess".
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|
_MSVCRVER_TO_FULLVER = {}
|
|
if sys.platform == 'win32':
|
|
try:
|
|
import msvcrt
|
|
# I took one version in my SxS directory: no idea if it is the good
|
|
# one, and we can't retrieve it from python
|
|
_MSVCRVER_TO_FULLVER['80'] = "8.0.50727.42"
|
|
_MSVCRVER_TO_FULLVER['90'] = "9.0.21022.8"
|
|
# Value from msvcrt.CRT_ASSEMBLY_VERSION under Python 3.3.0
|
|
# on Windows XP:
|
|
_MSVCRVER_TO_FULLVER['100'] = "10.0.30319.460"
|
|
crt_ver = getattr(msvcrt, 'CRT_ASSEMBLY_VERSION', None)
|
|
if crt_ver is not None: # Available at least back to Python 3.3
|
|
maj, min = re.match(r'(\d+)\.(\d)', crt_ver).groups()
|
|
_MSVCRVER_TO_FULLVER[maj + min] = crt_ver
|
|
del maj, min
|
|
del crt_ver
|
|
except ImportError:
|
|
# If we are here, means python was not built with MSVC. Not sure what
|
|
# to do in that case: manifest building will fail, but it should not be
|
|
# used in that case anyway
|
|
log.warn('Cannot import msvcrt: using manifest will not be possible')
|
|
|
|
def msvc_manifest_xml(maj, min):
|
|
"""Given a major and minor version of the MSVCR, returns the
|
|
corresponding XML file."""
|
|
try:
|
|
fullver = _MSVCRVER_TO_FULLVER[str(maj * 10 + min)]
|
|
except KeyError:
|
|
raise ValueError("Version %d,%d of MSVCRT not supported yet" %
|
|
(maj, min)) from None
|
|
# Don't be fooled, it looks like an XML, but it is not. In particular, it
|
|
# should not have any space before starting, and its size should be
|
|
# divisible by 4, most likely for alignment constraints when the xml is
|
|
# embedded in the binary...
|
|
# This template was copied directly from the python 2.6 binary (using
|
|
# strings.exe from mingw on python.exe).
|
|
template = textwrap.dedent("""\
|
|
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
|
|
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
|
|
<security>
|
|
<requestedPrivileges>
|
|
<requestedExecutionLevel level="asInvoker" uiAccess="false"></requestedExecutionLevel>
|
|
</requestedPrivileges>
|
|
</security>
|
|
</trustInfo>
|
|
<dependency>
|
|
<dependentAssembly>
|
|
<assemblyIdentity type="win32" name="Microsoft.VC%(maj)d%(min)d.CRT" version="%(fullver)s" processorArchitecture="*" publicKeyToken="1fc8b3b9a1e18e3b"></assemblyIdentity>
|
|
</dependentAssembly>
|
|
</dependency>
|
|
</assembly>""")
|
|
|
|
return template % {'fullver': fullver, 'maj': maj, 'min': min}
|
|
|
|
def manifest_rc(name, type='dll'):
|
|
"""Return the rc file used to generate the res file which will be embedded
|
|
as manifest for given manifest file name, of given type ('dll' or
|
|
'exe').
|
|
|
|
Parameters
|
|
----------
|
|
name : str
|
|
name of the manifest file to embed
|
|
type : str {'dll', 'exe'}
|
|
type of the binary which will embed the manifest
|
|
|
|
"""
|
|
if type == 'dll':
|
|
rctype = 2
|
|
elif type == 'exe':
|
|
rctype = 1
|
|
else:
|
|
raise ValueError("Type %s not supported" % type)
|
|
|
|
return """\
|
|
#include "winuser.h"
|
|
%d RT_MANIFEST %s""" % (rctype, name)
|
|
|
|
def check_embedded_msvcr_match_linked(msver):
|
|
"""msver is the ms runtime version used for the MANIFEST."""
|
|
# check msvcr major version are the same for linking and
|
|
# embedding
|
|
maj = msvc_runtime_major()
|
|
if maj:
|
|
if not maj == int(msver):
|
|
raise ValueError(
|
|
"Discrepancy between linked msvcr " \
|
|
"(%d) and the one about to be embedded " \
|
|
"(%d)" % (int(msver), maj))
|
|
|
|
def configtest_name(config):
|
|
base = os.path.basename(config._gen_temp_sourcefile("yo", [], "c"))
|
|
return os.path.splitext(base)[0]
|
|
|
|
def manifest_name(config):
|
|
# Get configest name (including suffix)
|
|
root = configtest_name(config)
|
|
exext = config.compiler.exe_extension
|
|
return root + exext + ".manifest"
|
|
|
|
def rc_name(config):
|
|
# Get configtest name (including suffix)
|
|
root = configtest_name(config)
|
|
return root + ".rc"
|
|
|
|
def generate_manifest(config):
|
|
msver = get_build_msvc_version()
|
|
if msver is not None:
|
|
if msver >= 8:
|
|
check_embedded_msvcr_match_linked(msver)
|
|
ma_str, mi_str = str(msver).split('.')
|
|
# Write the manifest file
|
|
manxml = msvc_manifest_xml(int(ma_str), int(mi_str))
|
|
with open(manifest_name(config), "w") as man:
|
|
config.temp_files.append(manifest_name(config))
|
|
man.write(manxml)
|
|
|