[dlqueue.git] / venv / lib / python3.11 / site-packages / setuptools / _distutils / cygwinccompiler.py

"""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).
"""

import os
import re
import sys
import copy
import shlex
import warnings
from subprocess import check_output

from .unixccompiler import UnixCCompiler
from .file_util import write_file
from .errors import (
    DistutilsExecError,
    DistutilsPlatformError,
    CCompilerError,
    CompileError,
)
from .version import LooseVersion, suppress_known_deprecation
from ._collections import RangeMap


_msvcr_lookup = RangeMap.left(
    {
        # MSVC 7.0
        1300: ['msvcr70'],
        # MSVC 7.1
        1310: ['msvcr71'],
        # VS2005 / MSVC 8.0
        1400: ['msvcr80'],
        # VS2008 / MSVC 9.0
        1500: ['msvcr90'],
        # VS2010 / MSVC 10.0
        1600: ['msvcr100'],
        # VS2012 / MSVC 11.0
        1700: ['msvcr110'],
        # VS2013 / MSVC 12.0
        1800: ['msvcr120'],
        # VS2015 / MSVC 14.0
        1900: ['vcruntime140'],
        2000: RangeMap.undefined_value,
    },
)


def get_msvcr():
    """Include the appropriate MSVC runtime library if Python was built
    with MSVC 7.0 or later.
    """
    match = re.search(r'MSC v\.(\d{4})', sys.version)
    try:
        msc_ver = int(match.group(1))
    except AttributeError:
        return
    try:
        return _msvcr_lookup[msc_ver]
    except KeyError:
        raise ValueError("Unknown MS Compiler version %s " % msc_ver)


_runtime_library_dirs_msg = (
    "Unable to set runtime library search path on Windows, "
    "usually indicated by `runtime_library_dirs` parameter to Extension"
)


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.a"
    dylib_lib_extension = ".dll"
    static_lib_format = "lib%s%s"
    shared_lib_format = "lib%s%s"
    dylib_lib_format = "cyg%s%s"
    exe_extension = ".exe"

    def __init__(self, verbose=0, dry_run=0, force=0):
        super().__init__(verbose, dry_run, force)

        status, details = check_config_h()
        self.debug_print(
            "Python's GCC status: {} (details: {})".format(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=('{} -mcygwin {}'.format(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 depended 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 in ('.rc', '.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 [])

        if runtime_library_dirs:
            self.warn(_runtime_library_dirs_msg)

        # 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")

            # 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

            # 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,
        )

    def runtime_library_dir_option(self, dir):
        # cygwin doesn't support rpath. While in theory we could error
        # out like MSVC does, code might expect it to work like on Unix, so
        # just warn and hope for the best.
        self.warn(_runtime_library_dirs_msg)
        return []

    # -- Miscellaneous methods -----------------------------------------

    def _make_out_path(self, output_dir, strip_dir, src_name):
        # use normcase to make sure '.rc' is really '.rc' and not '.RC'
        norm_src_name = os.path.normcase(src_name)
        return super()._make_out_path(output_dir, strip_dir, norm_src_name)

    @property
    def out_extensions(self):
        """
        Add support for rc and res files.
        """
        return {
            **super().out_extensions,
            **{ext: ext + self.obj_extension for ext in ('.res', '.rc')},
        }


# 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):
        super().__init__(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='{} {}'.format(self.linker_dll, shared_option),
        )

    def runtime_library_dir_option(self, dir):
        raise DistutilsPlatformError(_runtime_library_dirs_msg)


# 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 '{}': {}".format(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.
"""
Commit	Line	Data
e0df8241 JR	1	"""distutils.cygwinccompiler
	2
	3	Provides the CygwinCCompiler class, a subclass of UnixCCompiler that
	4	handles the Cygwin port of the GNU C compiler to Windows. It also contains
	5	the Mingw32CCompiler class which handles the mingw32 port of GCC (same as
	6	cygwin in no-cygwin mode).
	7	"""
	8
	9	import os
	10	import re
	11	import sys
	12	import copy
	13	import shlex
	14	import warnings
	15	from subprocess import check_output
	16
	17	from .unixccompiler import UnixCCompiler
	18	from .file_util import write_file
	19	from .errors import (
	20	DistutilsExecError,
	21	DistutilsPlatformError,
	22	CCompilerError,
	23	CompileError,
	24	)
	25	from .version import LooseVersion, suppress_known_deprecation
	26	from ._collections import RangeMap
	27
	28
	29	_msvcr_lookup = RangeMap.left(
	30	{
	31	# MSVC 7.0
	32	1300: ['msvcr70'],
	33	# MSVC 7.1
	34	1310: ['msvcr71'],
	35	# VS2005 / MSVC 8.0
	36	1400: ['msvcr80'],
	37	# VS2008 / MSVC 9.0
	38	1500: ['msvcr90'],
	39	# VS2010 / MSVC 10.0
	40	1600: ['msvcr100'],
	41	# VS2012 / MSVC 11.0
	42	1700: ['msvcr110'],
	43	# VS2013 / MSVC 12.0
	44	1800: ['msvcr120'],
	45	# VS2015 / MSVC 14.0
	46	1900: ['vcruntime140'],
	47	2000: RangeMap.undefined_value,
	48	},
	49	)
	50
	51
	52	def get_msvcr():
	53	"""Include the appropriate MSVC runtime library if Python was built
	54	with MSVC 7.0 or later.
	55	"""
	56	match = re.search(r'MSC v\.(\d{4})', sys.version)
	57	try:
	58	msc_ver = int(match.group(1))
	59	except AttributeError:
	60	return
	61	try:
	62	return _msvcr_lookup[msc_ver]
	63	except KeyError:
	64	raise ValueError("Unknown MS Compiler version %s " % msc_ver)
65
66
67	_runtime_library_dirs_msg = (
68	"Unable to set runtime library search path on Windows, "
69	"usually indicated by `runtime_library_dirs` parameter to Extension"
70	)
71
72
73	class CygwinCCompiler(UnixCCompiler):
74	"""Handles the Cygwin port of the GNU C compiler to Windows."""
75
76	compiler_type = 'cygwin'
77	obj_extension = ".o"
78	static_lib_extension = ".a"
79	shared_lib_extension = ".dll.a"
80	dylib_lib_extension = ".dll"
81	static_lib_format = "lib%s%s"
82	shared_lib_format = "lib%s%s"
83	dylib_lib_format = "cyg%s%s"
84	exe_extension = ".exe"
85
86	def __init__(self, verbose=0, dry_run=0, force=0):
87	super().__init__(verbose, dry_run, force)
88
89	status, details = check_config_h()
90	self.debug_print(
91	"Python's GCC status: {} (details: {})".format(status, details)
92	)
93	if status is not CONFIG_H_OK:
94	self.warn(
95	"Python's pyconfig.h doesn't seem to support your compiler. "
96	"Reason: %s. "
97	"Compiling may fail because of undefined preprocessor macros." % details
98	)
99
100	self.cc = os.environ.get('CC', 'gcc')
101	self.cxx = os.environ.get('CXX', 'g++')
102
103	self.linker_dll = self.cc
104	shared_option = "-shared"
105
106	self.set_executables(
107	compiler='%s -mcygwin -O -Wall' % self.cc,
108	compiler_so='%s -mcygwin -mdll -O -Wall' % self.cc,
109	compiler_cxx='%s -mcygwin -O -Wall' % self.cxx,
110	linker_exe='%s -mcygwin' % self.cc,
111	linker_so=('{} -mcygwin {}'.format(self.linker_dll, shared_option)),
112	)
113
114	# Include the appropriate MSVC runtime library if Python was built
115	# with MSVC 7.0 or later.
116	self.dll_libraries = get_msvcr()
117
118	@property
119	def gcc_version(self):
120	# Older numpy depended on this existing to check for ancient
121	# gcc versions. This doesn't make much sense with clang etc so
122	# just hardcode to something recent.
123	# https://github.com/numpy/numpy/pull/20333
124	warnings.warn(
125	"gcc_version attribute of CygwinCCompiler is deprecated. "
126	"Instead of returning actual gcc version a fixed value 11.2.0 is returned.",
127	DeprecationWarning,
128	stacklevel=2,
129	)
130	with suppress_known_deprecation():
131	return LooseVersion("11.2.0")
132
133	def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts):
134	"""Compiles the source by spawning GCC and windres if needed."""
135	if ext in ('.rc', '.res'):
136	# gcc needs '.res' and '.rc' compiled to object files !!!
137	try:
138	self.spawn(["windres", "-i", src, "-o", obj])
139	except DistutilsExecError as msg:
140	raise CompileError(msg)
141	else: # for other files use the C-compiler
142	try:
143	self.spawn(
144	self.compiler_so + cc_args + [src, '-o', obj] + extra_postargs
145	)
146	except DistutilsExecError as msg:
147	raise CompileError(msg)
148
149	def link(
150	self,
151	target_desc,
152	objects,
153	output_filename,
154	output_dir=None,
155	libraries=None,
156	library_dirs=None,
157	runtime_library_dirs=None,
158	export_symbols=None,
159	debug=0,
160	extra_preargs=None,
161	extra_postargs=None,
162	build_temp=None,
163	target_lang=None,
164	):
165	"""Link the objects."""
166	# use separate copies, so we can modify the lists
167	extra_preargs = copy.copy(extra_preargs or [])
168	libraries = copy.copy(libraries or [])
169	objects = copy.copy(objects or [])
170
171	if runtime_library_dirs:
172	self.warn(_runtime_library_dirs_msg)
173
174	# Additional libraries
175	libraries.extend(self.dll_libraries)
176
177	# handle export symbols by creating a def-file
178	# with executables this only works with gcc/ld as linker
179	if (export_symbols is not None) and (
180	target_desc != self.EXECUTABLE or self.linker_dll == "gcc"
181	):
182	# (The linker doesn't do anything if output is up-to-date.
183	# So it would probably better to check if we really need this,
184	# but for this we had to insert some unchanged parts of
185	# UnixCCompiler, and this is not what we want.)
186
187	# we want to put some files in the same directory as the
188	# object files are, build_temp doesn't help much
189	# where are the object files
190	temp_dir = os.path.dirname(objects[0])
191	# name of dll to give the helper files the same base name
192	(dll_name, dll_extension) = os.path.splitext(
193	os.path.basename(output_filename)
194	)
195
196	# generate the filenames for these files
197	def_file = os.path.join(temp_dir, dll_name + ".def")
198
199	# Generate .def file
200	contents = ["LIBRARY %s" % os.path.basename(output_filename), "EXPORTS"]
201	for sym in export_symbols:
202	contents.append(sym)
203	self.execute(write_file, (def_file, contents), "writing %s" % def_file)
204
205	# next add options for def-file
206
207	# for gcc/ld the def-file is specified as any object files
208	objects.append(def_file)
209
210	# end: if ((export_symbols is not None) and
211	# (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")):
212
213	# who wants symbols and a many times larger output file
214	# should explicitly switch the debug mode on
215	# otherwise we let ld strip the output file
216	# (On my machine: 10KiB < stripped_file < ??100KiB
217	# unstripped_file = stripped_file + XXX KiB
218	# ( XXX=254 for a typical python extension))
219	if not debug:
220	extra_preargs.append("-s")
221
222	UnixCCompiler.link(
223	self,
224	target_desc,
225	objects,
226	output_filename,
227	output_dir,
228	libraries,
229	library_dirs,
230	runtime_library_dirs,
231	None, # export_symbols, we do this in our def-file
232	debug,
233	extra_preargs,
234	extra_postargs,
235	build_temp,
236	target_lang,
237	)
238
239	def runtime_library_dir_option(self, dir):
240	# cygwin doesn't support rpath. While in theory we could error
241	# out like MSVC does, code might expect it to work like on Unix, so
242	# just warn and hope for the best.
243	self.warn(_runtime_library_dirs_msg)
244	return []
245
246	# -- Miscellaneous methods -----------------------------------------
247
248	def _make_out_path(self, output_dir, strip_dir, src_name):
249	# use normcase to make sure '.rc' is really '.rc' and not '.RC'
250	norm_src_name = os.path.normcase(src_name)
251	return super()._make_out_path(output_dir, strip_dir, norm_src_name)
252
253	@property
254	def out_extensions(self):
255	"""
256	Add support for rc and res files.
257	"""
258	return {
259	**super().out_extensions,
260	**{ext: ext + self.obj_extension for ext in ('.res', '.rc')},
261	}
262
263
264	# the same as cygwin plus some additional parameters
265	class Mingw32CCompiler(CygwinCCompiler):
266	"""Handles the Mingw32 port of the GNU C compiler to Windows."""
267
268	compiler_type = 'mingw32'
269
270	def __init__(self, verbose=0, dry_run=0, force=0):
271	super().__init__(verbose, dry_run, force)
272
273	shared_option = "-shared"
274
275	if is_cygwincc(self.cc):
276	raise CCompilerError('Cygwin gcc cannot be used with --compiler=mingw32')
277
278	self.set_executables(
279	compiler='%s -O -Wall' % self.cc,
280	compiler_so='%s -mdll -O -Wall' % self.cc,
281	compiler_cxx='%s -O -Wall' % self.cxx,
282	linker_exe='%s' % self.cc,
283	linker_so='{} {}'.format(self.linker_dll, shared_option),
284	)
285
286	def runtime_library_dir_option(self, dir):
287	raise DistutilsPlatformError(_runtime_library_dirs_msg)
288
289
290	# Because these compilers aren't configured in Python's pyconfig.h file by
291	# default, we should at least warn the user if he is using an unmodified
292	# version.
293
294	CONFIG_H_OK = "ok"
295	CONFIG_H_NOTOK = "not ok"
296	CONFIG_H_UNCERTAIN = "uncertain"
297
298
299	def check_config_h():
300	"""Check if the current Python installation appears amenable to building
301	extensions with GCC.
302
303	Returns a tuple (status, details), where 'status' is one of the following
304	constants:
305
306	- CONFIG_H_OK: all is well, go ahead and compile
307	- CONFIG_H_NOTOK: doesn't look good
308	- CONFIG_H_UNCERTAIN: not sure -- unable to read pyconfig.h
309
310	'details' is a human-readable string explaining the situation.
311
312	Note there are two ways to conclude "OK": either 'sys.version' contains
313	the string "GCC" (implying that this Python was built with GCC), or the
314	installed "pyconfig.h" contains the string "__GNUC__".
315	"""
316
317	# XXX since this function also checks sys.version, it's not strictly a
318	# "pyconfig.h" check -- should probably be renamed...
319
320	from distutils import sysconfig
321
322	# if sys.version contains GCC then python was compiled with GCC, and the
323	# pyconfig.h file should be OK
324	if "GCC" in sys.version:
325	return CONFIG_H_OK, "sys.version mentions 'GCC'"
326
327	# Clang would also work
328	if "Clang" in sys.version:
329	return CONFIG_H_OK, "sys.version mentions 'Clang'"
330
331	# let's see if __GNUC__ is mentioned in python.h
332	fn = sysconfig.get_config_h_filename()
333	try:
334	config_h = open(fn)
335	try:
336	if "__GNUC__" in config_h.read():
337	return CONFIG_H_OK, "'%s' mentions '__GNUC__'" % fn
338	else:
339	return CONFIG_H_NOTOK, "'%s' does not mention '__GNUC__'" % fn
340	finally:
341	config_h.close()
342	except OSError as exc:
343	return (CONFIG_H_UNCERTAIN, "couldn't read '{}': {}".format(fn, exc.strerror))
344
345
346	def is_cygwincc(cc):
347	'''Try to determine if the compiler that would be used is from cygwin.'''
348	out_string = check_output(shlex.split(cc) + ['-dumpmachine'])
349	return out_string.strip().endswith(b'cygwin')
350
351
352	get_versions = None
353	"""
354	A stand-in for the previous get_versions() function to prevent failures
355	when monkeypatched. See pypa/setuptools#2969.
356	"""