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cpython/setup.py

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# Autodetecting setup.py script for building the Python extensions
import argparse
import importlib._bootstrap
import importlib.machinery
import importlib.util
import logging
import os
import re
import shlex
import sys
import sysconfig
import warnings
from glob import glob, escape
import _osx_support
try:
import subprocess
del subprocess
SUBPROCESS_BOOTSTRAP = False
except ImportError:
# Bootstrap Python: distutils.spawn uses subprocess to build C extensions,
# subprocess requires C extensions built by setup.py like _posixsubprocess.
#
# Use _bootsubprocess which only uses the os module.
#
# It is dropped from sys.modules as soon as all C extension modules
# are built.
import _bootsubprocess
sys.modules['subprocess'] = _bootsubprocess
del _bootsubprocess
SUBPROCESS_BOOTSTRAP = True
with warnings.catch_warnings():
# bpo-41282 (PEP 632) deprecated distutils but setup.py still uses it
warnings.filterwarnings(
"ignore",
"The distutils package is deprecated",
DeprecationWarning
)
warnings.filterwarnings(
"ignore",
"The distutils.sysconfig module is deprecated, use sysconfig instead",
DeprecationWarning
)
from distutils.command.build_ext import build_ext
from distutils.command.install import install
from distutils.command.install_lib import install_lib
from distutils.core import Extension, setup
from distutils.errors import CCompilerError, DistutilsError
from distutils.spawn import find_executable
# This global variable is used to hold the list of modules to be disabled.
DISABLED_MODULE_LIST = []
# --list-module-names option used by Tools/scripts/generate_module_names.py
LIST_MODULE_NAMES = False
logging.basicConfig(format='%(message)s', level=logging.INFO)
log = logging.getLogger('setup')
def get_platform():
# Cross compiling
if "_PYTHON_HOST_PLATFORM" in os.environ:
return os.environ["_PYTHON_HOST_PLATFORM"]
# Get value of sys.platform
if sys.platform.startswith('osf1'):
return 'osf1'
return sys.platform
CROSS_COMPILING = ("_PYTHON_HOST_PLATFORM" in os.environ)
HOST_PLATFORM = get_platform()
MS_WINDOWS = (HOST_PLATFORM == 'win32')
CYGWIN = (HOST_PLATFORM == 'cygwin')
MACOS = (HOST_PLATFORM == 'darwin')
AIX = (HOST_PLATFORM.startswith('aix'))
VXWORKS = ('vxworks' in HOST_PLATFORM)
EMSCRIPTEN = HOST_PLATFORM == 'emscripten-wasm32'
CC = os.environ.get("CC")
if not CC:
CC = sysconfig.get_config_var("CC")
if EMSCRIPTEN:
# emcc is a Python script from a different Python interpreter.
os.environ.pop("PYTHONPATH", None)
SUMMARY = """
Python is an interpreted, interactive, object-oriented programming
language. It is often compared to Tcl, Perl, Scheme or Java.
Python combines remarkable power with very clear syntax. It has
modules, classes, exceptions, very high level dynamic data types, and
dynamic typing. There are interfaces to many system calls and
libraries, as well as to various windowing systems (X11, Motif, Tk,
Mac, MFC). New built-in modules are easily written in C or C++. Python
is also usable as an extension language for applications that need a
programmable interface.
The Python implementation is portable: it runs on many brands of UNIX,
on Windows, DOS, Mac, Amiga... If your favorite system isn't
listed here, it may still be supported, if there's a C compiler for
it. Ask around on comp.lang.python -- or just try compiling Python
yourself.
"""
CLASSIFIERS = """
Development Status :: 6 - Mature
License :: OSI Approved :: Python Software Foundation License
Natural Language :: English
Programming Language :: C
Programming Language :: Python
Topic :: Software Development
"""
def run_command(cmd):
status = os.system(cmd)
return os.waitstatus_to_exitcode(status)
# Set common compiler and linker flags derived from the Makefile,
# reserved for building the interpreter and the stdlib modules.
# See bpo-21121 and bpo-35257
def set_compiler_flags(compiler_flags, compiler_py_flags_nodist):
flags = sysconfig.get_config_var(compiler_flags)
py_flags_nodist = sysconfig.get_config_var(compiler_py_flags_nodist)
sysconfig.get_config_vars()[compiler_flags] = flags + ' ' + py_flags_nodist
def add_dir_to_list(dirlist, dir):
"""Add the directory 'dir' to the list 'dirlist' (after any relative
directories) if:
1) 'dir' is not already in 'dirlist'
2) 'dir' actually exists, and is a directory.
"""
if dir is None or not os.path.isdir(dir) or dir in dirlist:
return
for i, path in enumerate(dirlist):
if not os.path.isabs(path):
dirlist.insert(i + 1, dir)
return
dirlist.insert(0, dir)
def sysroot_paths(make_vars, subdirs):
"""Get the paths of sysroot sub-directories.
* make_vars: a sequence of names of variables of the Makefile where
sysroot may be set.
* subdirs: a sequence of names of subdirectories used as the location for
headers or libraries.
"""
dirs = []
for var_name in make_vars:
var = sysconfig.get_config_var(var_name)
if var is not None:
m = re.search(r'--sysroot=([^"]\S*|"[^"]+")', var)
if m is not None:
sysroot = m.group(1).strip('"')
for subdir in subdirs:
if os.path.isabs(subdir):
subdir = subdir[1:]
path = os.path.join(sysroot, subdir)
if os.path.isdir(path):
dirs.append(path)
break
return dirs
MACOS_SDK_ROOT = None
MACOS_SDK_SPECIFIED = None
def macosx_sdk_root():
"""Return the directory of the current macOS SDK.
If no SDK was explicitly configured, call the compiler to find which
include files paths are being searched by default. Use '/' if the
compiler is searching /usr/include (meaning system header files are
installed) or use the root of an SDK if that is being searched.
(The SDK may be supplied via Xcode or via the Command Line Tools).
The SDK paths used by Apple-supplied tool chains depend on the
setting of various variables; see the xcrun man page for more info.
Also sets MACOS_SDK_SPECIFIED for use by macosx_sdk_specified().
"""
global MACOS_SDK_ROOT, MACOS_SDK_SPECIFIED
# If already called, return cached result.
if MACOS_SDK_ROOT:
return MACOS_SDK_ROOT
cflags = sysconfig.get_config_var('CFLAGS')
m = re.search(r'-isysroot\s*(\S+)', cflags)
if m is not None:
MACOS_SDK_ROOT = m.group(1)
MACOS_SDK_SPECIFIED = MACOS_SDK_ROOT != '/'
else:
MACOS_SDK_ROOT = _osx_support._default_sysroot(
sysconfig.get_config_var('CC'))
MACOS_SDK_SPECIFIED = False
return MACOS_SDK_ROOT
def is_macosx_sdk_path(path):
"""
Returns True if 'path' can be located in a macOS SDK
"""
return ( (path.startswith('/usr/') and not path.startswith('/usr/local'))
or path.startswith('/System/Library')
or path.startswith('/System/iOSSupport') )
def grep_headers_for(function, headers):
for header in headers:
with open(header, 'r', errors='surrogateescape') as f:
if function in f.read():
return True
return False
def find_file(filename, std_dirs, paths):
"""Searches for the directory where a given file is located,
and returns a possibly-empty list of additional directories, or None
if the file couldn't be found at all.
'filename' is the name of a file, such as readline.h or libcrypto.a.
'std_dirs' is the list of standard system directories; if the
file is found in one of them, no additional directives are needed.
'paths' is a list of additional locations to check; if the file is
found in one of them, the resulting list will contain the directory.
"""
if MACOS:
# Honor the MacOSX SDK setting when one was specified.
# An SDK is a directory with the same structure as a real
# system, but with only header files and libraries.
sysroot = macosx_sdk_root()
# Check the standard locations
for dir_ in std_dirs:
f = os.path.join(dir_, filename)
if MACOS and is_macosx_sdk_path(dir_):
f = os.path.join(sysroot, dir_[1:], filename)
if os.path.exists(f): return []
# Check the additional directories
for dir_ in paths:
f = os.path.join(dir_, filename)
if MACOS and is_macosx_sdk_path(dir_):
f = os.path.join(sysroot, dir_[1:], filename)
if os.path.exists(f):
return [dir_]
# Not found anywhere
return None
def validate_tzpath():
base_tzpath = sysconfig.get_config_var('TZPATH')
if not base_tzpath:
return
tzpaths = base_tzpath.split(os.pathsep)
bad_paths = [tzpath for tzpath in tzpaths if not os.path.isabs(tzpath)]
if bad_paths:
raise ValueError('TZPATH must contain only absolute paths, '
+ f'found:\n{tzpaths!r}\nwith invalid paths:\n'
+ f'{bad_paths!r}')
def find_module_file(module, dirlist):
"""Find a module in a set of possible folders. If it is not found
return the unadorned filename"""
dirs = find_file(module, [], dirlist)
if not dirs:
return module
if len(dirs) > 1:
log.info(f"WARNING: multiple copies of {module} found")
return os.path.abspath(os.path.join(dirs[0], module))
class PyBuildExt(build_ext):
def __init__(self, dist):
build_ext.__init__(self, dist)
self.srcdir = None
self.lib_dirs = None
self.inc_dirs = None
self.config_h_vars = None
self.failed = []
self.failed_on_import = []
self.missing = []
self.disabled_configure = []
if '-j' in os.environ.get('MAKEFLAGS', ''):
self.parallel = True
def add(self, ext):
self.extensions.append(ext)
def addext(self, ext, *, update_flags=True):
"""Add extension with Makefile MODULE_{name} support
"""
if update_flags:
self.update_extension_flags(ext)
state = sysconfig.get_config_var(f"MODULE_{ext.name.upper()}_STATE")
if state == "yes":
self.extensions.append(ext)
elif state == "disabled":
self.disabled_configure.append(ext.name)
elif state == "missing":
self.missing.append(ext.name)
elif state == "n/a":
# not available on current platform
pass
else:
# not migrated to MODULE_{name}_STATE yet.
self.announce(
f'WARNING: Makefile is missing module variable for "{ext.name}"',
level=2
)
self.extensions.append(ext)
def update_extension_flags(self, ext):
"""Update extension flags with module CFLAGS and LDFLAGS
Reads MODULE_{name}_CFLAGS and _LDFLAGS
Distutils appends extra args to the compiler arguments. Some flags like
-I must appear earlier, otherwise the pre-processor picks up files
from system include directories.
"""
upper_name = ext.name.upper()
# Parse compiler flags (-I, -D, -U, extra args)
cflags = sysconfig.get_config_var(f"MODULE_{upper_name}_CFLAGS")
if cflags:
for token in shlex.split(cflags):
switch = token[0:2]
value = token[2:]
if switch == '-I':
ext.include_dirs.append(value)
elif switch == '-D':
key, _, val = value.partition("=")
if not val:
val = None
ext.define_macros.append((key, val))
elif switch == '-U':
ext.undef_macros.append(value)
else:
ext.extra_compile_args.append(token)
# Parse linker flags (-L, -l, extra objects, extra args)
ldflags = sysconfig.get_config_var(f"MODULE_{upper_name}_LDFLAGS")
if ldflags:
for token in shlex.split(ldflags):
switch = token[0:2]
value = token[2:]
if switch == '-L':
ext.library_dirs.append(value)
elif switch == '-l':
ext.libraries.append(value)
elif (
token[0] != '-' and
token.endswith(('.a', '.o', '.so', '.sl', '.dylib'))
):
ext.extra_objects.append(token)
else:
ext.extra_link_args.append(token)
return ext
def set_srcdir(self):
self.srcdir = sysconfig.get_config_var('srcdir')
if not self.srcdir:
# Maybe running on Windows but not using CYGWIN?
raise ValueError("No source directory; cannot proceed.")
self.srcdir = os.path.abspath(self.srcdir)
def remove_disabled(self):
# Remove modules that are present on the disabled list
extensions = [ext for ext in self.extensions
if ext.name not in DISABLED_MODULE_LIST]
self.extensions = extensions
def update_sources_depends(self):
# Fix up the autodetected modules, prefixing all the source files
# with Modules/.
# Add dependencies from MODULE_{name}_DEPS variable
moddirlist = [
# files in Modules/ directory
os.path.join(self.srcdir, 'Modules'),
# files relative to build base, e.g. libmpdec.a, libexpat.a
os.getcwd()
]
# Python header files
include_dir = escape(sysconfig.get_path('include'))
headers = [sysconfig.get_config_h_filename()]
headers.extend(glob(os.path.join(include_dir, "*.h")))
headers.extend(glob(os.path.join(include_dir, "cpython", "*.h")))
headers.extend(glob(os.path.join(include_dir, "internal", "*.h")))
for ext in self.extensions:
ext.sources = [ find_module_file(filename, moddirlist)
for filename in ext.sources ]
# Update dependencies from Makefile
makedeps = sysconfig.get_config_var(f"MODULE_{ext.name.upper()}_DEPS")
if makedeps:
# remove backslashes from line break continuations
ext.depends.extend(
dep for dep in makedeps.split() if dep != "\\"
)
ext.depends = [
find_module_file(filename, moddirlist) for filename in ext.depends
]
# re-compile extensions if a header file has been changed
ext.depends.extend(headers)
def handle_configured_extensions(self):
# The sysconfig variables built by makesetup that list the already
# built modules and the disabled modules as configured by the Setup
# files.
sysconf_built = set(sysconfig.get_config_var('MODBUILT_NAMES').split())
sysconf_shared = set(sysconfig.get_config_var('MODSHARED_NAMES').split())
sysconf_dis = set(sysconfig.get_config_var('MODDISABLED_NAMES').split())
mods_built = []
mods_disabled = []
for ext in self.extensions:
# If a module has already been built or has been disabled in the
# Setup files, don't build it here.
if ext.name in sysconf_built:
mods_built.append(ext)
if ext.name in sysconf_dis:
mods_disabled.append(ext)
mods_configured = mods_built + mods_disabled
if mods_configured:
self.extensions = [x for x in self.extensions if x not in
mods_configured]
# Remove the shared libraries built by a previous build.
for ext in mods_configured:
# Don't remove shared extensions which have been built
# by Modules/Setup
if ext.name in sysconf_shared:
continue
fullpath = self.get_ext_fullpath(ext.name)
if os.path.lexists(fullpath):
os.unlink(fullpath)
return mods_built, mods_disabled
def set_compiler_executables(self):
# When you run "make CC=altcc" or something similar, you really want
# those environment variables passed into the setup.py phase. Here's
# a small set of useful ones.
compiler = os.environ.get('CC')
args = {}
# unfortunately, distutils doesn't let us provide separate C and C++
# compilers
if compiler is not None:
(ccshared,cflags) = sysconfig.get_config_vars('CCSHARED','CFLAGS')
args['compiler_so'] = compiler + ' ' + ccshared + ' ' + cflags
self.compiler.set_executables(**args)
def build_extensions(self):
self.set_srcdir()
self.set_compiler_executables()
self.configure_compiler()
self.init_inc_lib_dirs()
# Detect which modules should be compiled
self.detect_modules()
if not LIST_MODULE_NAMES:
self.remove_disabled()
self.update_sources_depends()
mods_built, mods_disabled = self.handle_configured_extensions()
if LIST_MODULE_NAMES:
for ext in self.extensions:
print(ext.name)
for name in self.missing:
print(name)
return
build_ext.build_extensions(self)
if SUBPROCESS_BOOTSTRAP:
# Drop our custom subprocess module:
# use the newly built subprocess module
del sys.modules['subprocess']
for ext in self.extensions:
self.check_extension_import(ext)
self.summary(mods_built, mods_disabled)
def summary(self, mods_built, mods_disabled):
longest = max([len(e.name) for e in self.extensions], default=0)
if self.failed or self.failed_on_import:
all_failed = self.failed + self.failed_on_import
longest = max(longest, max([len(name) for name in all_failed]))
def print_three_column(lst):
lst.sort(key=str.lower)
# guarantee zip() doesn't drop anything
while len(lst) % 3:
lst.append("")
for e, f, g in zip(lst[::3], lst[1::3], lst[2::3]):
print("%-*s %-*s %-*s" % (longest, e, longest, f,
longest, g))
if self.missing:
print()
print("The necessary bits to build these optional modules were not "
"found:")
print_three_column(self.missing)
print("To find the necessary bits, look in setup.py in"
" detect_modules() for the module's name.")
print()
if mods_built:
print()
print("The following modules found by detect_modules() in"
" setup.py, have been")
print("built by the Makefile instead, as configured by the"
" Setup files:")
print_three_column([ext.name for ext in mods_built])
print()
if mods_disabled:
print()
print("The following modules found by detect_modules() in"
" setup.py have not")
print("been built, they are *disabled* in the Setup files:")
print_three_column([ext.name for ext in mods_disabled])
print()
if self.disabled_configure:
print()
print("The following modules found by detect_modules() in"
" setup.py have not")
print("been built, they are *disabled* by configure:")
print_three_column(self.disabled_configure)
print()
if self.failed:
failed = self.failed[:]
print()
print("Failed to build these modules:")
print_three_column(failed)
print()
if self.failed_on_import:
failed = self.failed_on_import[:]
print()
print("Following modules built successfully"
" but were removed because they could not be imported:")
print_three_column(failed)
print()
if any('_ssl' in l
for l in (self.missing, self.failed, self.failed_on_import)):
print()
print("Could not build the ssl module!")
print("Python requires a OpenSSL 1.1.1 or newer")
if sysconfig.get_config_var("OPENSSL_LDFLAGS"):
print("Custom linker flags may require --with-openssl-rpath=auto")
print()
if os.environ.get("PYTHONSTRICTEXTENSIONBUILD") and (
self.failed or self.failed_on_import or self.missing
):
raise RuntimeError("Failed to build some stdlib modules")
def build_extension(self, ext):
try:
build_ext.build_extension(self, ext)
except (CCompilerError, DistutilsError) as why:
self.announce('WARNING: building of extension "%s" failed: %s' %
(ext.name, why))
self.failed.append(ext.name)
return
def check_extension_import(self, ext):
# Don't try to import an extension that has failed to compile
if ext.name in self.failed:
self.announce(
'WARNING: skipping import check for failed build "%s"' %
ext.name, level=1)
return
# Workaround for Mac OS X: The Carbon-based modules cannot be
# reliably imported into a command-line Python
if 'Carbon' in ext.extra_link_args:
self.announce(
'WARNING: skipping import check for Carbon-based "%s"' %
ext.name)
return
if MACOS and (
sys.maxsize > 2**32 and '-arch' in ext.extra_link_args):
# Don't bother doing an import check when an extension was
# build with an explicit '-arch' flag on OSX. That's currently
# only used to build 32-bit only extensions in a 4-way
# universal build and loading 32-bit code into a 64-bit
# process will fail.
self.announce(
'WARNING: skipping import check for "%s"' %
ext.name)
return
# Workaround for Cygwin: Cygwin currently has fork issues when many
# modules have been imported
if CYGWIN:
self.announce('WARNING: skipping import check for Cygwin-based "%s"'
% ext.name)
return
ext_filename = os.path.join(
self.build_lib,
self.get_ext_filename(self.get_ext_fullname(ext.name)))
# If the build directory didn't exist when setup.py was
# started, sys.path_importer_cache has a negative result
# cached. Clear that cache before trying to import.
sys.path_importer_cache.clear()
# Don't try to load extensions for cross builds
if CROSS_COMPILING:
return
loader = importlib.machinery.ExtensionFileLoader(ext.name, ext_filename)
spec = importlib.util.spec_from_file_location(ext.name, ext_filename,
loader=loader)
try:
importlib._bootstrap._load(spec)
except ImportError as why:
self.failed_on_import.append(ext.name)
self.announce('*** WARNING: renaming "%s" since importing it'
' failed: %s' % (ext.name, why), level=3)
assert not self.inplace
basename, tail = os.path.splitext(ext_filename)
newname = basename + "_failed" + tail
if os.path.exists(newname):
os.remove(newname)
os.rename(ext_filename, newname)
except:
exc_type, why, tb = sys.exc_info()
self.announce('*** WARNING: importing extension "%s" '
'failed with %s: %s' % (ext.name, exc_type, why),
level=3)
self.failed.append(ext.name)
def add_multiarch_paths(self):
# Debian/Ubuntu multiarch support.
# https://wiki.ubuntu.com/MultiarchSpec
tmpfile = os.path.join(self.build_temp, 'multiarch')
if not os.path.exists(self.build_temp):
os.makedirs(self.build_temp)
ret = run_command(
'%s -print-multiarch > %s 2> /dev/null' % (CC, tmpfile))
multiarch_path_component = ''
try:
if ret == 0:
with open(tmpfile) as fp:
multiarch_path_component = fp.readline().strip()
finally:
os.unlink(tmpfile)
if multiarch_path_component != '':
add_dir_to_list(self.compiler.library_dirs,
'/usr/lib/' + multiarch_path_component)
add_dir_to_list(self.compiler.include_dirs,
'/usr/include/' + multiarch_path_component)
return
if not find_executable('dpkg-architecture'):
return
opt = ''
if CROSS_COMPILING:
opt = '-t' + sysconfig.get_config_var('HOST_GNU_TYPE')
tmpfile = os.path.join(self.build_temp, 'multiarch')
if not os.path.exists(self.build_temp):
os.makedirs(self.build_temp)
ret = run_command(
'dpkg-architecture %s -qDEB_HOST_MULTIARCH > %s 2> /dev/null' %
(opt, tmpfile))
try:
if ret == 0:
with open(tmpfile) as fp:
multiarch_path_component = fp.readline().strip()
add_dir_to_list(self.compiler.library_dirs,
'/usr/lib/' + multiarch_path_component)
add_dir_to_list(self.compiler.include_dirs,
'/usr/include/' + multiarch_path_component)
finally:
os.unlink(tmpfile)
def add_wrcc_search_dirs(self):
# add library search path by wr-cc, the compiler wrapper
def convert_mixed_path(path):
# convert path like C:\folder1\folder2/folder3/folder4
# to msys style /c/folder1/folder2/folder3/folder4
drive = path[0].lower()
left = path[2:].replace("\\", "/")
return "/" + drive + left
def add_search_path(line):
# On Windows building machine, VxWorks does
# cross builds under msys2 environment.
pathsep = (";" if sys.platform == "msys" else ":")
for d in line.strip().split("=")[1].split(pathsep):
d = d.strip()
if sys.platform == "msys":
# On Windows building machine, compiler
# returns mixed style path like:
# C:\folder1\folder2/folder3/folder4
d = convert_mixed_path(d)
d = os.path.normpath(d)
add_dir_to_list(self.compiler.library_dirs, d)
tmpfile = os.path.join(self.build_temp, 'wrccpaths')
os.makedirs(self.build_temp, exist_ok=True)
try:
ret = run_command('%s --print-search-dirs >%s' % (CC, tmpfile))
if ret:
return
with open(tmpfile) as fp:
# Parse paths in libraries line. The line is like:
# On Linux, "libraries: = path1:path2:path3"
# On Windows, "libraries: = path1;path2;path3"
for line in fp:
if not line.startswith("libraries"):
continue
add_search_path(line)
finally:
try:
os.unlink(tmpfile)
except OSError:
pass
def add_cross_compiling_paths(self):
tmpfile = os.path.join(self.build_temp, 'ccpaths')
if not os.path.exists(self.build_temp):
os.makedirs(self.build_temp)
# bpo-38472: With a German locale, GCC returns "gcc-Version 9.1.0
# (GCC)", whereas it returns "gcc version 9.1.0" with the C locale.
ret = run_command('LC_ALL=C %s -E -v - </dev/null 2>%s 1>/dev/null' % (CC, tmpfile))
is_gcc = False
is_clang = False
in_incdirs = False
try:
if ret == 0:
with open(tmpfile) as fp:
for line in fp.readlines():
if line.startswith("gcc version"):
is_gcc = True
elif line.startswith("clang version"):
is_clang = True
elif line.startswith("#include <...>"):
in_incdirs = True
elif line.startswith("End of search list"):
in_incdirs = False
elif (is_gcc or is_clang) and line.startswith("LIBRARY_PATH"):
for d in line.strip().split("=")[1].split(":"):
d = os.path.normpath(d)
if '/gcc/' not in d:
add_dir_to_list(self.compiler.library_dirs,
d)
elif (is_gcc or is_clang) and in_incdirs and '/gcc/' not in line and '/clang/' not in line:
add_dir_to_list(self.compiler.include_dirs,
line.strip())
finally:
os.unlink(tmpfile)
if VXWORKS:
self.add_wrcc_search_dirs()
def add_ldflags_cppflags(self):
# Add paths specified in the environment variables LDFLAGS and
# CPPFLAGS for header and library files.
# We must get the values from the Makefile and not the environment
# directly since an inconsistently reproducible issue comes up where
# the environment variable is not set even though the value were passed
# into configure and stored in the Makefile (issue found on OS X 10.3).
for env_var, arg_name, dir_list in (
('LDFLAGS', '-R', self.compiler.runtime_library_dirs),
('LDFLAGS', '-L', self.compiler.library_dirs),
('CPPFLAGS', '-I', self.compiler.include_dirs)):
env_val = sysconfig.get_config_var(env_var)
if env_val:
parser = argparse.ArgumentParser()
parser.add_argument(arg_name, dest="dirs", action="append")
# To prevent argparse from raising an exception about any
# options in env_val that it mistakes for known option, we
# strip out all double dashes and any dashes followed by a
# character that is not for the option we are dealing with.
#
# Please note that order of the regex is important! We must
# strip out double-dashes first so that we don't end up with
# substituting "--Long" to "-Long" and thus lead to "ong" being
# used for a library directory.
env_val = re.sub(r'(^|\s+)-(-|(?!%s))' % arg_name[1],
' ', env_val)
options, _ = parser.parse_known_args(env_val.split())
if options.dirs:
for directory in reversed(options.dirs):
add_dir_to_list(dir_list, directory)
def configure_compiler(self):
# Ensure that /usr/local is always used, but the local build
# directories (i.e. '.' and 'Include') must be first. See issue
# 10520.
if not CROSS_COMPILING:
add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')
# only change this for cross builds for 3.3, issues on Mageia
if CROSS_COMPILING:
self.add_cross_compiling_paths()
self.add_multiarch_paths()
self.add_ldflags_cppflags()
def init_inc_lib_dirs(self):
if (not CROSS_COMPILING and
os.path.normpath(sys.base_prefix) != '/usr' and
not sysconfig.get_config_var('PYTHONFRAMEWORK')):
# OSX note: Don't add LIBDIR and INCLUDEDIR to building a framework
# (PYTHONFRAMEWORK is set) to avoid # linking problems when
# building a framework with different architectures than
# the one that is currently installed (issue #7473)
add_dir_to_list(self.compiler.library_dirs,
sysconfig.get_config_var("LIBDIR"))
add_dir_to_list(self.compiler.include_dirs,
sysconfig.get_config_var("INCLUDEDIR"))
system_lib_dirs = ['/lib64', '/usr/lib64', '/lib', '/usr/lib']
system_include_dirs = ['/usr/include']
# lib_dirs and inc_dirs are used to search for files;
# if a file is found in one of those directories, it can
# be assumed that no additional -I,-L directives are needed.
if not CROSS_COMPILING:
self.lib_dirs = self.compiler.library_dirs + system_lib_dirs
self.inc_dirs = self.compiler.include_dirs + system_include_dirs
else:
# Add the sysroot paths. 'sysroot' is a compiler option used to
# set the logical path of the standard system headers and
# libraries.
self.lib_dirs = (self.compiler.library_dirs +
sysroot_paths(('LDFLAGS', 'CC'), system_lib_dirs))
self.inc_dirs = (self.compiler.include_dirs +
sysroot_paths(('CPPFLAGS', 'CFLAGS', 'CC'),
system_include_dirs))
config_h = sysconfig.get_config_h_filename()
with open(config_h) as file:
self.config_h_vars = sysconfig.parse_config_h(file)
# OSF/1 and Unixware have some stuff in /usr/ccs/lib (like -ldb)
if HOST_PLATFORM in ['osf1', 'unixware7', 'openunix8']:
self.lib_dirs += ['/usr/ccs/lib']
# HP-UX11iv3 keeps files in lib/hpux folders.
if HOST_PLATFORM == 'hp-ux11':
self.lib_dirs += ['/usr/lib/hpux64', '/usr/lib/hpux32']
if MACOS:
# This should work on any unixy platform ;-)
# If the user has bothered specifying additional -I and -L flags
# in OPT and LDFLAGS we might as well use them here.
#
# NOTE: using shlex.split would technically be more correct, but
# also gives a bootstrap problem. Let's hope nobody uses
# directories with whitespace in the name to store libraries.
cflags, ldflags = sysconfig.get_config_vars(
'CFLAGS', 'LDFLAGS')
for item in cflags.split():
if item.startswith('-I'):
self.inc_dirs.append(item[2:])
for item in ldflags.split():
if item.startswith('-L'):
self.lib_dirs.append(item[2:])
def detect_simple_extensions(self):
#
# The following modules are all pretty straightforward, and compile
# on pretty much any POSIXish platform.
#
# array objects
self.addext(Extension('array', ['arraymodule.c']))
# Context Variables
self.addext(Extension('_contextvars', ['_contextvarsmodule.c']))
# math library functions, e.g. sin()
self.addext(Extension('math', ['mathmodule.c']))
# complex math library functions
self.addext(Extension('cmath', ['cmathmodule.c']))
# libm is needed by delta_new() that uses round() and by accum() that
# uses modf().
self.addext(Extension('_datetime', ['_datetimemodule.c']))
self.addext(Extension('_zoneinfo', ['_zoneinfo.c']))
# random number generator implemented in C
self.addext(Extension("_random", ["_randommodule.c"]))
self.addext(Extension("_bisect", ["_bisectmodule.c"]))
self.addext(Extension("_heapq", ["_heapqmodule.c"]))
# C-optimized pickle replacement
self.addext(Extension("_pickle", ["_pickle.c"]))
# _json speedups
self.addext(Extension("_json", ["_json.c"]))
# profiler (_lsprof is for cProfile.py)
self.addext(Extension('_lsprof', ['_lsprof.c', 'rotatingtree.c']))
# static Unicode character database
self.addext(Extension('unicodedata', ['unicodedata.c']))
self.addext(Extension('_opcode', ['_opcode.c']))
# asyncio speedups
self.addext(Extension("_asyncio", ["_asynciomodule.c"]))
self.addext(Extension("_queue", ["_queuemodule.c"]))
self.addext(Extension("_statistics", ["_statisticsmodule.c"]))
self.addext(Extension("_struct", ["_struct.c"]))
self.addext(Extension("_typing", ["_typingmodule.c"]))
# Modules with some UNIX dependencies -- on by default:
# (If you have a really backward UNIX, select and socket may not be
# supported...)
# fcntl(2) and ioctl(2)
self.addext(Extension('fcntl', ['fcntlmodule.c']))
# grp(3)
self.addext(Extension('grp', ['grpmodule.c']))
self.addext(Extension('_socket', ['socketmodule.c']))
self.addext(Extension('spwd', ['spwdmodule.c']))
# select(2); not on ancient System V
self.addext(Extension('select', ['selectmodule.c']))
# Memory-mapped files (also works on Win32).
self.addext(Extension('mmap', ['mmapmodule.c']))
# Lance Ellinghaus's syslog module
# syslog daemon interface
self.addext(Extension('syslog', ['syslogmodule.c']))
# Python interface to subinterpreter C-API.
self.addext(Extension('_xxsubinterpreters', ['_xxsubinterpretersmodule.c']))
#
# Here ends the simple stuff. From here on, modules need certain
# libraries, are platform-specific, or present other surprises.
#
# Multimedia modules
# These don't work for 64-bit platforms!!!
# These represent audio samples or images as strings:
#
# Operations on audio samples
# According to #993173, this one should actually work fine on
# 64-bit platforms.
#
# audioop needs libm for floor() in multiple functions.
self.addext(Extension('audioop', ['audioop.c']))
# CSV files
self.addext(Extension('_csv', ['_csv.c']))
# POSIX subprocess module helper.
self.addext(Extension('_posixsubprocess', ['_posixsubprocess.c']))
def detect_test_extensions(self):
# Python C API test module
self.addext(Extension('_testcapi', ['_testcapimodule.c']))
# Python Internal C API test module
self.addext(Extension('_testinternalcapi', ['_testinternalcapi.c']))
# Python PEP-3118 (buffer protocol) test module
self.addext(Extension('_testbuffer', ['_testbuffer.c']))
# Test loading multiple modules from one compiled file (https://bugs.python.org/issue16421)
self.addext(Extension('_testimportmultiple', ['_testimportmultiple.c']))
# Test multi-phase extension module init (PEP 489)
self.addext(Extension('_testmultiphase', ['_testmultiphase.c']))
# Fuzz tests.
self.addext(Extension(
'_xxtestfuzz',
['_xxtestfuzz/_xxtestfuzz.c', '_xxtestfuzz/fuzzer.c']
))
def detect_readline_curses(self):
self.addext(Extension('readline', ['readline.c']))
self.addext(Extension('_curses', ['_cursesmodule.c']))
self.addext(Extension('_curses_panel', ['_curses_panel.c']))
def detect_crypt(self):
self.addext(Extension('_crypt', ['_cryptmodule.c']))
def detect_dbm_gdbm(self):
self.addext(Extension('_dbm', ['_dbmmodule.c']))
# Anthony Baxter's gdbm module. GNU dbm(3) will require -lgdbm:
self.addext(Extension('_gdbm', ['_gdbmmodule.c']))
def detect_sqlite(self):
sources = [
"_sqlite/blob.c",
"_sqlite/connection.c",
"_sqlite/cursor.c",
"_sqlite/microprotocols.c",
"_sqlite/module.c",
"_sqlite/prepare_protocol.c",
"_sqlite/row.c",
"_sqlite/statement.c",
"_sqlite/util.c",
]
self.addext(Extension("_sqlite3", sources=sources))
def detect_platform_specific_exts(self):
# Unix-only modules
# Steen Lumholt's termios module
self.addext(Extension('termios', ['termios.c']))
# Jeremy Hylton's rlimit interface
self.addext(Extension('resource', ['resource.c']))
# linux/soundcard.h or sys/soundcard.h
self.addext(Extension('ossaudiodev', ['ossaudiodev.c']))
# macOS-only, needs SystemConfiguration and CoreFoundation framework
self.addext(Extension('_scproxy', ['_scproxy.c']))
def detect_compress_exts(self):
# Andrew Kuchling's zlib module.
self.addext(Extension('zlib', ['zlibmodule.c']))
# Helper module for various ascii-encoders. Uses zlib for an optimized
# crc32 if we have it. Otherwise binascii uses its own.
self.addext(Extension('binascii', ['binascii.c']))
# Gustavo Niemeyer's bz2 module.
self.addext(Extension('_bz2', ['_bz2module.c']))
# LZMA compression support.
self.addext(Extension('_lzma', ['_lzmamodule.c']))
def detect_expat_elementtree(self):
# Interface to the Expat XML parser
#
# Expat was written by James Clark and is now maintained by a group of
# developers on SourceForge; see www.libexpat.org for more information.
# The pyexpat module was written by Paul Prescod after a prototype by
# Jack Jansen. The Expat source is included in Modules/expat/. Usage
# of a system shared libexpat.so is possible with --with-system-expat
# configure option.
#
# More information on Expat can be found at www.libexpat.org.
#
self.addext(Extension('pyexpat', sources=['pyexpat.c']))
# Fredrik Lundh's cElementTree module. Note that this also
# uses expat (via the CAPI hook in pyexpat).
self.addext(Extension('_elementtree', sources=['_elementtree.c']))
def detect_multibytecodecs(self):
# Hye-Shik Chang's CJKCodecs modules.
self.addext(Extension('_multibytecodec',
['cjkcodecs/multibytecodec.c']))
for loc in ('kr', 'jp', 'cn', 'tw', 'hk', 'iso2022'):
self.addext(Extension(
f'_codecs_{loc}', [f'cjkcodecs/_codecs_{loc}.c']
))
def detect_multiprocessing(self):
# Richard Oudkerk's multiprocessing module
multiprocessing_srcs = ['_multiprocessing/multiprocessing.c']
if (
sysconfig.get_config_var('HAVE_SEM_OPEN') and not
sysconfig.get_config_var('POSIX_SEMAPHORES_NOT_ENABLED')
):
multiprocessing_srcs.append('_multiprocessing/semaphore.c')
self.addext(Extension('_multiprocessing', multiprocessing_srcs))
self.addext(Extension('_posixshmem', ['_multiprocessing/posixshmem.c']))
def detect_uuid(self):
# Build the _uuid module if possible
self.addext(Extension('_uuid', ['_uuidmodule.c']))
def detect_modules(self):
# remove dummy extension
self.extensions = []
# Some C extensions are built by entries in Modules/Setup.bootstrap.
# These are extensions are required to bootstrap the interpreter or
# build process.
self.detect_simple_extensions()
self.detect_test_extensions()
self.detect_readline_curses()
self.detect_crypt()
self.detect_openssl_hashlib()
self.detect_hash_builtins()
self.detect_dbm_gdbm()
self.detect_sqlite()
self.detect_platform_specific_exts()
self.detect_nis()
self.detect_compress_exts()
self.detect_expat_elementtree()
self.detect_multibytecodecs()
self.detect_decimal()
self.detect_ctypes()
self.detect_multiprocessing()
self.detect_tkinter()
self.detect_uuid()
# Uncomment the next line if you want to play with xxmodule.c
# self.add(Extension('xx', ['xxmodule.c']))
self.addext(Extension('xxlimited', ['xxlimited.c']))
self.addext(Extension('xxlimited_35', ['xxlimited_35.c']))
def detect_tkinter(self):
self.addext(Extension('_tkinter', ['_tkinter.c', 'tkappinit.c']))
def detect_ctypes(self):
# Thomas Heller's _ctypes module
src = [
'_ctypes/_ctypes.c',
'_ctypes/callbacks.c',
'_ctypes/callproc.c',
'_ctypes/stgdict.c',
'_ctypes/cfield.c',
]
malloc_closure = sysconfig.get_config_var(
"MODULE__CTYPES_MALLOC_CLOSURE"
)
if malloc_closure:
src.append(malloc_closure)
self.addext(Extension('_ctypes', src))
self.addext(Extension('_ctypes_test', ['_ctypes/_ctypes_test.c']))
def detect_decimal(self):
# Stefan Krah's _decimal module
self.addext(
Extension(
'_decimal',
['_decimal/_decimal.c'],
# Uncomment for extra functionality:
# define_macros=[('EXTRA_FUNCTIONALITY', 1)]
)
)
def detect_openssl_hashlib(self):
self.addext(Extension('_ssl', ['_ssl.c']))
self.addext(Extension('_hashlib', ['_hashopenssl.c']))
def detect_hash_builtins(self):
# By default we always compile these even when OpenSSL is available
# (issue #14693). It's harmless and the object code is tiny
# (40-50 KiB per module, only loaded when actually used). Modules can
# be disabled via the --with-builtin-hashlib-hashes configure flag.
self.addext(Extension('_md5', ['md5module.c']))
self.addext(Extension('_sha1', ['sha1module.c']))
self.addext(Extension('_sha256', ['sha256module.c']))
self.addext(Extension('_sha512', ['sha512module.c']))
self.addext(Extension('_sha3', ['_sha3/sha3module.c']))
self.addext(Extension('_blake2',
[
'_blake2/blake2module.c',
'_blake2/blake2b_impl.c',
'_blake2/blake2s_impl.c'
]
))
def detect_nis(self):
self.addext(Extension('nis', ['nismodule.c']))
class PyBuildInstall(install):
# Suppress the warning about installation into the lib_dynload
# directory, which is not in sys.path when running Python during
# installation:
def initialize_options (self):
install.initialize_options(self)
self.warn_dir=0
# Customize subcommands to not install an egg-info file for Python
sub_commands = [('install_lib', install.has_lib),
('install_headers', install.has_headers),
('install_scripts', install.has_scripts),
('install_data', install.has_data)]
class PyBuildInstallLib(install_lib):
# Do exactly what install_lib does but make sure correct access modes get
# set on installed directories and files. All installed files with get
# mode 644 unless they are a shared library in which case they will get
# mode 755. All installed directories will get mode 755.
# this is works for EXT_SUFFIX too, which ends with SHLIB_SUFFIX
shlib_suffix = sysconfig.get_config_var("SHLIB_SUFFIX")
def install(self):
outfiles = install_lib.install(self)
self.set_file_modes(outfiles, 0o644, 0o755)
self.set_dir_modes(self.install_dir, 0o755)
return outfiles
def set_file_modes(self, files, defaultMode, sharedLibMode):
if not files: return
for filename in files:
if os.path.islink(filename): continue
mode = defaultMode
if filename.endswith(self.shlib_suffix): mode = sharedLibMode
log.info("changing mode of %s to %o", filename, mode)
if not self.dry_run: os.chmod(filename, mode)
def set_dir_modes(self, dirname, mode):
for dirpath, dirnames, fnames in os.walk(dirname):
if os.path.islink(dirpath):
continue
log.info("changing mode of %s to %o", dirpath, mode)
if not self.dry_run: os.chmod(dirpath, mode)
def main():
global LIST_MODULE_NAMES
if "--list-module-names" in sys.argv:
LIST_MODULE_NAMES = True
sys.argv.remove("--list-module-names")
set_compiler_flags('CFLAGS', 'PY_CFLAGS_NODIST')
set_compiler_flags('LDFLAGS', 'PY_LDFLAGS_NODIST')
class DummyProcess:
"""Hack for parallel build"""
ProcessPoolExecutor = None
sys.modules['concurrent.futures.process'] = DummyProcess
validate_tzpath()
# turn off warnings when deprecated modules are imported
import warnings
warnings.filterwarnings("ignore",category=DeprecationWarning)
setup(# PyPI Metadata (PEP 301)
name = "Python",
version = sys.version.split()[0],
url = "https://www.python.org/%d.%d" % sys.version_info[:2],
maintainer = "Guido van Rossum and the Python community",
maintainer_email = "python-dev@python.org",
description = "A high-level object-oriented programming language",
long_description = SUMMARY.strip(),
license = "PSF license",
classifiers = [x for x in CLASSIFIERS.split("\n") if x],
platforms = ["Many"],
# Build info
cmdclass = {'build_ext': PyBuildExt,
'install': PyBuildInstall,
'install_lib': PyBuildInstallLib},
# A dummy module is defined here, because build_ext won't be
# called unless there's at least one extension module defined.
ext_modules=[Extension('_dummy', ['_dummy.c'])],
)
# --install-platlib
if __name__ == '__main__':
main()
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