CS2613/utils/python-venv/Lib/site-packages/setuptools/_distutils/cygwinccompiler.py
Isaac Shoebottom a50f49d2c8 Add python venv
2022-10-31 10:10:52 -03:00

363 lines
14 KiB
Python

"""distutils.cygwinccompiler
Provides the CygwinCCompiler class, a subclass of UnixCCompiler that
handles the Cygwin port of the GNU C compiler to Windows. It also contains
the Mingw32CCompiler class which handles the mingw32 port of GCC (same as
cygwin in no-cygwin mode).
"""
# problems:
#
# * if you use a msvc compiled python version (1.5.2)
# 1. you have to insert a __GNUC__ section in its config.h
# 2. you have to generate an import library for its dll
# - create a def-file for python??.dll
# - create an import library using
# dlltool --dllname python15.dll --def python15.def \
# --output-lib libpython15.a
#
# see also http://starship.python.net/crew/kernr/mingw32/Notes.html
#
# * We put export_symbols in a def-file, and don't use
# --export-all-symbols because it doesn't worked reliable in some
# tested configurations. And because other windows compilers also
# need their symbols specified this no serious problem.
#
# tested configurations:
#
# * cygwin gcc 2.91.57/ld 2.9.4/dllwrap 0.2.4 works
# (after patching python's config.h and for C++ some other include files)
# see also http://starship.python.net/crew/kernr/mingw32/Notes.html
# * mingw32 gcc 2.95.2/ld 2.9.4/dllwrap 0.2.4 works
# (ld doesn't support -shared, so we use dllwrap)
# * cygwin gcc 2.95.2/ld 2.10.90/dllwrap 2.10.90 works now
# - its dllwrap doesn't work, there is a bug in binutils 2.10.90
# see also http://sources.redhat.com/ml/cygwin/2000-06/msg01274.html
# - using gcc -mdll instead dllwrap doesn't work without -static because
# it tries to link against dlls instead their import libraries. (If
# it finds the dll first.)
# By specifying -static we force ld to link against the import libraries,
# this is windows standard and there are normally not the necessary symbols
# in the dlls.
# *** only the version of June 2000 shows these problems
# * cygwin gcc 3.2/ld 2.13.90 works
# (ld supports -shared)
# * mingw gcc 3.2/ld 2.13 works
# (ld supports -shared)
# * llvm-mingw with Clang 11 works
# (lld supports -shared)
import os
import sys
import copy
import shlex
import warnings
from subprocess import check_output
from distutils.unixccompiler import UnixCCompiler
from distutils.file_util import write_file
from distutils.errors import (DistutilsExecError, CCompilerError,
CompileError, UnknownFileError)
from distutils.version import LooseVersion, suppress_known_deprecation
def get_msvcr():
"""Include the appropriate MSVC runtime library if Python was built
with MSVC 7.0 or later.
"""
msc_pos = sys.version.find('MSC v.')
if msc_pos != -1:
msc_ver = sys.version[msc_pos+6:msc_pos+10]
if msc_ver == '1300':
# MSVC 7.0
return ['msvcr70']
elif msc_ver == '1310':
# MSVC 7.1
return ['msvcr71']
elif msc_ver == '1400':
# VS2005 / MSVC 8.0
return ['msvcr80']
elif msc_ver == '1500':
# VS2008 / MSVC 9.0
return ['msvcr90']
elif msc_ver == '1600':
# VS2010 / MSVC 10.0
return ['msvcr100']
elif msc_ver == '1700':
# VS2012 / MSVC 11.0
return ['msvcr110']
elif msc_ver == '1800':
# VS2013 / MSVC 12.0
return ['msvcr120']
elif 1900 <= int(msc_ver) < 2000:
# VS2015 / MSVC 14.0
return ['ucrt', 'vcruntime140']
else:
raise ValueError("Unknown MS Compiler version %s " % msc_ver)
class CygwinCCompiler(UnixCCompiler):
""" Handles the Cygwin port of the GNU C compiler to Windows.
"""
compiler_type = 'cygwin'
obj_extension = ".o"
static_lib_extension = ".a"
shared_lib_extension = ".dll"
static_lib_format = "lib%s%s"
shared_lib_format = "%s%s"
exe_extension = ".exe"
def __init__(self, verbose=0, dry_run=0, force=0):
UnixCCompiler.__init__(self, verbose, dry_run, force)
status, details = check_config_h()
self.debug_print("Python's GCC status: %s (details: %s)" %
(status, details))
if status is not CONFIG_H_OK:
self.warn(
"Python's pyconfig.h doesn't seem to support your compiler. "
"Reason: %s. "
"Compiling may fail because of undefined preprocessor macros."
% details)
self.cc = os.environ.get('CC', 'gcc')
self.cxx = os.environ.get('CXX', 'g++')
self.linker_dll = self.cc
shared_option = "-shared"
self.set_executables(compiler='%s -mcygwin -O -Wall' % self.cc,
compiler_so='%s -mcygwin -mdll -O -Wall' % self.cc,
compiler_cxx='%s -mcygwin -O -Wall' % self.cxx,
linker_exe='%s -mcygwin' % self.cc,
linker_so=('%s -mcygwin %s' %
(self.linker_dll, shared_option)))
# Include the appropriate MSVC runtime library if Python was built
# with MSVC 7.0 or later.
self.dll_libraries = get_msvcr()
@property
def gcc_version(self):
# Older numpy dependend on this existing to check for ancient
# gcc versions. This doesn't make much sense with clang etc so
# just hardcode to something recent.
# https://github.com/numpy/numpy/pull/20333
warnings.warn(
"gcc_version attribute of CygwinCCompiler is deprecated. "
"Instead of returning actual gcc version a fixed value 11.2.0 is returned.",
DeprecationWarning,
stacklevel=2,
)
with suppress_known_deprecation():
return LooseVersion("11.2.0")
def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts):
"""Compiles the source by spawning GCC and windres if needed."""
if ext == '.rc' or ext == '.res':
# gcc needs '.res' and '.rc' compiled to object files !!!
try:
self.spawn(["windres", "-i", src, "-o", obj])
except DistutilsExecError as msg:
raise CompileError(msg)
else: # for other files use the C-compiler
try:
self.spawn(self.compiler_so + cc_args + [src, '-o', obj] +
extra_postargs)
except DistutilsExecError as msg:
raise CompileError(msg)
def link(self, target_desc, objects, 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):
"""Link the objects."""
# use separate copies, so we can modify the lists
extra_preargs = copy.copy(extra_preargs or [])
libraries = copy.copy(libraries or [])
objects = copy.copy(objects or [])
# Additional libraries
libraries.extend(self.dll_libraries)
# handle export symbols by creating a def-file
# with executables this only works with gcc/ld as linker
if ((export_symbols is not None) and
(target_desc != self.EXECUTABLE or self.linker_dll == "gcc")):
# (The linker doesn't do anything if output is up-to-date.
# So it would probably better to check if we really need this,
# but for this we had to insert some unchanged parts of
# UnixCCompiler, and this is not what we want.)
# we want to put some files in the same directory as the
# object files are, build_temp doesn't help much
# where are the object files
temp_dir = os.path.dirname(objects[0])
# name of dll to give the helper files the same base name
(dll_name, dll_extension) = os.path.splitext(
os.path.basename(output_filename))
# generate the filenames for these files
def_file = os.path.join(temp_dir, dll_name + ".def")
lib_file = os.path.join(temp_dir, 'lib' + dll_name + ".a")
# Generate .def file
contents = [
"LIBRARY %s" % os.path.basename(output_filename),
"EXPORTS"]
for sym in export_symbols:
contents.append(sym)
self.execute(write_file, (def_file, contents),
"writing %s" % def_file)
# next add options for def-file and to creating import libraries
# doesn't work: bfd_close build\...\libfoo.a: Invalid operation
#extra_preargs.extend(["-Wl,--out-implib,%s" % lib_file])
# for gcc/ld the def-file is specified as any object files
objects.append(def_file)
#end: if ((export_symbols is not None) and
# (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")):
# who wants symbols and a many times larger output file
# should explicitly switch the debug mode on
# otherwise we let ld strip the output file
# (On my machine: 10KiB < stripped_file < ??100KiB
# unstripped_file = stripped_file + XXX KiB
# ( XXX=254 for a typical python extension))
if not debug:
extra_preargs.append("-s")
UnixCCompiler.link(self, target_desc, objects, output_filename,
output_dir, libraries, library_dirs,
runtime_library_dirs,
None, # export_symbols, we do this in our def-file
debug, extra_preargs, extra_postargs, build_temp,
target_lang)
# -- Miscellaneous methods -----------------------------------------
def object_filenames(self, source_filenames, strip_dir=0, output_dir=''):
"""Adds supports for rc and res files."""
if output_dir is None:
output_dir = ''
obj_names = []
for src_name in source_filenames:
# use normcase to make sure '.rc' is really '.rc' and not '.RC'
base, ext = os.path.splitext(os.path.normcase(src_name))
if ext not in (self.src_extensions + ['.rc','.res']):
raise UnknownFileError("unknown file type '%s' (from '%s')" % \
(ext, src_name))
if strip_dir:
base = os.path.basename (base)
if ext in ('.res', '.rc'):
# these need to be compiled to object files
obj_names.append (os.path.join(output_dir,
base + ext + self.obj_extension))
else:
obj_names.append (os.path.join(output_dir,
base + self.obj_extension))
return obj_names
# the same as cygwin plus some additional parameters
class Mingw32CCompiler(CygwinCCompiler):
""" Handles the Mingw32 port of the GNU C compiler to Windows.
"""
compiler_type = 'mingw32'
def __init__(self, verbose=0, dry_run=0, force=0):
CygwinCCompiler.__init__ (self, verbose, dry_run, force)
shared_option = "-shared"
if is_cygwincc(self.cc):
raise CCompilerError(
'Cygwin gcc cannot be used with --compiler=mingw32')
self.set_executables(compiler='%s -O -Wall' % self.cc,
compiler_so='%s -mdll -O -Wall' % self.cc,
compiler_cxx='%s -O -Wall' % self.cxx,
linker_exe='%s' % self.cc,
linker_so='%s %s'
% (self.linker_dll, shared_option))
# Maybe we should also append -mthreads, but then the finished
# dlls need another dll (mingwm10.dll see Mingw32 docs)
# (-mthreads: Support thread-safe exception handling on `Mingw32')
# no additional libraries needed
self.dll_libraries=[]
# Include the appropriate MSVC runtime library if Python was built
# with MSVC 7.0 or later.
self.dll_libraries = get_msvcr()
# Because these compilers aren't configured in Python's pyconfig.h file by
# default, we should at least warn the user if he is using an unmodified
# version.
CONFIG_H_OK = "ok"
CONFIG_H_NOTOK = "not ok"
CONFIG_H_UNCERTAIN = "uncertain"
def check_config_h():
"""Check if the current Python installation appears amenable to building
extensions with GCC.
Returns a tuple (status, details), where 'status' is one of the following
constants:
- CONFIG_H_OK: all is well, go ahead and compile
- CONFIG_H_NOTOK: doesn't look good
- CONFIG_H_UNCERTAIN: not sure -- unable to read pyconfig.h
'details' is a human-readable string explaining the situation.
Note there are two ways to conclude "OK": either 'sys.version' contains
the string "GCC" (implying that this Python was built with GCC), or the
installed "pyconfig.h" contains the string "__GNUC__".
"""
# XXX since this function also checks sys.version, it's not strictly a
# "pyconfig.h" check -- should probably be renamed...
from distutils import sysconfig
# if sys.version contains GCC then python was compiled with GCC, and the
# pyconfig.h file should be OK
if "GCC" in sys.version:
return CONFIG_H_OK, "sys.version mentions 'GCC'"
# Clang would also work
if "Clang" in sys.version:
return CONFIG_H_OK, "sys.version mentions 'Clang'"
# let's see if __GNUC__ is mentioned in python.h
fn = sysconfig.get_config_h_filename()
try:
config_h = open(fn)
try:
if "__GNUC__" in config_h.read():
return CONFIG_H_OK, "'%s' mentions '__GNUC__'" % fn
else:
return CONFIG_H_NOTOK, "'%s' does not mention '__GNUC__'" % fn
finally:
config_h.close()
except OSError as exc:
return (CONFIG_H_UNCERTAIN,
"couldn't read '%s': %s" % (fn, exc.strerror))
def is_cygwincc(cc):
'''Try to determine if the compiler that would be used is from cygwin.'''
out_string = check_output(shlex.split(cc) + ['-dumpmachine'])
return out_string.strip().endswith(b'cygwin')
get_versions = None
"""
A stand-in for the previous get_versions() function to prevent failures
when monkeypatched. See pypa/setuptools#2969.
"""