| Current File : //proc/self/root/lib/python3/dist-packages/setuptools/command/build_ext.py |
import os
import sys
import itertools
from importlib.machinery import EXTENSION_SUFFIXES
from importlib.util import cache_from_source as _compiled_file_name
from typing import Dict, Iterator, List, Tuple
from pathlib import Path
from distutils.command.build_ext import build_ext as _du_build_ext
from distutils.ccompiler import new_compiler
from distutils.sysconfig import customize_compiler, get_config_var
from distutils import log
from setuptools.errors import BaseError
from setuptools.extension import Extension, Library
try:
# Attempt to use Cython for building extensions, if available
from Cython.Distutils.build_ext import build_ext as _build_ext
# Additionally, assert that the compiler module will load
# also. Ref #1229.
__import__('Cython.Compiler.Main')
except ImportError:
_build_ext = _du_build_ext
# make sure _config_vars is initialized
get_config_var("LDSHARED")
from distutils.sysconfig import _config_vars as _CONFIG_VARS # noqa
def _customize_compiler_for_shlib(compiler):
if sys.platform == "darwin":
# building .dylib requires additional compiler flags on OSX; here we
# temporarily substitute the pyconfig.h variables so that distutils'
# 'customize_compiler' uses them before we build the shared libraries.
tmp = _CONFIG_VARS.copy()
try:
# XXX Help! I don't have any idea whether these are right...
_CONFIG_VARS[
'LDSHARED'
] = "gcc -Wl,-x -dynamiclib -undefined dynamic_lookup"
_CONFIG_VARS['CCSHARED'] = " -dynamiclib"
_CONFIG_VARS['SO'] = ".dylib"
customize_compiler(compiler)
finally:
_CONFIG_VARS.clear()
_CONFIG_VARS.update(tmp)
else:
customize_compiler(compiler)
have_rtld = False
use_stubs = False
libtype = 'shared'
if sys.platform == "darwin":
use_stubs = True
elif os.name != 'nt':
try:
import dl
use_stubs = have_rtld = hasattr(dl, 'RTLD_NOW')
except ImportError:
pass
def if_dl(s):
return s if have_rtld else ''
def get_abi3_suffix():
"""Return the file extension for an abi3-compliant Extension()"""
for suffix in EXTENSION_SUFFIXES:
if '.abi3' in suffix: # Unix
return suffix
elif suffix == '.pyd': # Windows
return suffix
class build_ext(_build_ext):
editable_mode: bool = False
inplace: bool = False
def run(self):
"""Build extensions in build directory, then copy if --inplace"""
old_inplace, self.inplace = self.inplace, 0
_build_ext.run(self)
self.inplace = old_inplace
if old_inplace:
self.copy_extensions_to_source()
def _get_inplace_equivalent(self, build_py, ext: Extension) -> Tuple[str, str]:
fullname = self.get_ext_fullname(ext.name)
filename = self.get_ext_filename(fullname)
modpath = fullname.split('.')
package = '.'.join(modpath[:-1])
package_dir = build_py.get_package_dir(package)
inplace_file = os.path.join(package_dir, os.path.basename(filename))
regular_file = os.path.join(self.build_lib, filename)
return (inplace_file, regular_file)
def copy_extensions_to_source(self):
build_py = self.get_finalized_command('build_py')
for ext in self.extensions:
inplace_file, regular_file = self._get_inplace_equivalent(build_py, ext)
# Always copy, even if source is older than destination, to ensure
# that the right extensions for the current Python/platform are
# used.
if os.path.exists(regular_file) or not ext.optional:
self.copy_file(regular_file, inplace_file, level=self.verbose)
if ext._needs_stub:
inplace_stub = self._get_equivalent_stub(ext, inplace_file)
self._write_stub_file(inplace_stub, ext, compile=True)
# Always compile stub and remove the original (leave the cache behind)
# (this behaviour was observed in previous iterations of the code)
def _get_equivalent_stub(self, ext: Extension, output_file: str) -> str:
dir_ = os.path.dirname(output_file)
_, _, name = ext.name.rpartition(".")
return f"{os.path.join(dir_, name)}.py"
def _get_output_mapping(self) -> Iterator[Tuple[str, str]]:
if not self.inplace:
return
build_py = self.get_finalized_command('build_py')
opt = self.get_finalized_command('install_lib').optimize or ""
for ext in self.extensions:
inplace_file, regular_file = self._get_inplace_equivalent(build_py, ext)
yield (regular_file, inplace_file)
if ext._needs_stub:
# This version of `build_ext` always builds artifacts in another dir,
# when "inplace=True" is given it just copies them back.
# This is done in the `copy_extensions_to_source` function, which
# always compile stub files via `_compile_and_remove_stub`.
# At the end of the process, a `.pyc` stub file is created without the
# corresponding `.py`.
inplace_stub = self._get_equivalent_stub(ext, inplace_file)
regular_stub = self._get_equivalent_stub(ext, regular_file)
inplace_cache = _compiled_file_name(inplace_stub, optimization=opt)
output_cache = _compiled_file_name(regular_stub, optimization=opt)
yield (output_cache, inplace_cache)
def get_ext_filename(self, fullname):
so_ext = os.getenv('SETUPTOOLS_EXT_SUFFIX')
if so_ext:
filename = os.path.join(*fullname.split('.')) + so_ext
else:
filename = _build_ext.get_ext_filename(self, fullname)
so_ext = get_config_var('EXT_SUFFIX')
if fullname in self.ext_map:
ext = self.ext_map[fullname]
use_abi3 = getattr(ext, 'py_limited_api') and get_abi3_suffix()
if use_abi3:
filename = filename[: -len(so_ext)]
so_ext = get_abi3_suffix()
filename = filename + so_ext
if isinstance(ext, Library):
fn, ext = os.path.splitext(filename)
return self.shlib_compiler.library_filename(fn, libtype)
elif use_stubs and ext._links_to_dynamic:
d, fn = os.path.split(filename)
return os.path.join(d, 'dl-' + fn)
return filename
def initialize_options(self):
_build_ext.initialize_options(self)
self.shlib_compiler = None
self.shlibs = []
self.ext_map = {}
self.editable_mode = False
def finalize_options(self):
_build_ext.finalize_options(self)
self.extensions = self.extensions or []
self.check_extensions_list(self.extensions)
self.shlibs = [ext for ext in self.extensions if isinstance(ext, Library)]
if self.shlibs:
self.setup_shlib_compiler()
for ext in self.extensions:
ext._full_name = self.get_ext_fullname(ext.name)
for ext in self.extensions:
fullname = ext._full_name
self.ext_map[fullname] = ext
# distutils 3.1 will also ask for module names
# XXX what to do with conflicts?
self.ext_map[fullname.split('.')[-1]] = ext
ltd = self.shlibs and self.links_to_dynamic(ext) or False
ns = ltd and use_stubs and not isinstance(ext, Library)
ext._links_to_dynamic = ltd
ext._needs_stub = ns
filename = ext._file_name = self.get_ext_filename(fullname)
libdir = os.path.dirname(os.path.join(self.build_lib, filename))
if ltd and libdir not in ext.library_dirs:
ext.library_dirs.append(libdir)
if ltd and use_stubs and os.curdir not in ext.runtime_library_dirs:
ext.runtime_library_dirs.append(os.curdir)
if self.editable_mode:
self.inplace = True
def setup_shlib_compiler(self):
compiler = self.shlib_compiler = new_compiler(
compiler=self.compiler, dry_run=self.dry_run, force=self.force
)
_customize_compiler_for_shlib(compiler)
if self.include_dirs is not None:
compiler.set_include_dirs(self.include_dirs)
if self.define is not None:
# 'define' option is a list of (name,value) tuples
for name, value in self.define:
compiler.define_macro(name, value)
if self.undef is not None:
for macro in self.undef:
compiler.undefine_macro(macro)
if self.libraries is not None:
compiler.set_libraries(self.libraries)
if self.library_dirs is not None:
compiler.set_library_dirs(self.library_dirs)
if self.rpath is not None:
compiler.set_runtime_library_dirs(self.rpath)
if self.link_objects is not None:
compiler.set_link_objects(self.link_objects)
# hack so distutils' build_extension() builds a library instead
compiler.link_shared_object = link_shared_object.__get__(compiler)
def get_export_symbols(self, ext):
if isinstance(ext, Library):
return ext.export_symbols
return _build_ext.get_export_symbols(self, ext)
def build_extension(self, ext):
ext._convert_pyx_sources_to_lang()
_compiler = self.compiler
try:
if isinstance(ext, Library):
self.compiler = self.shlib_compiler
_build_ext.build_extension(self, ext)
if ext._needs_stub:
build_lib = self.get_finalized_command('build_py').build_lib
self.write_stub(build_lib, ext)
finally:
self.compiler = _compiler
def links_to_dynamic(self, ext):
"""Return true if 'ext' links to a dynamic lib in the same package"""
# XXX this should check to ensure the lib is actually being built
# XXX as dynamic, and not just using a locally-found version or a
# XXX static-compiled version
libnames = dict.fromkeys([lib._full_name for lib in self.shlibs])
pkg = '.'.join(ext._full_name.split('.')[:-1] + [''])
return any(pkg + libname in libnames for libname in ext.libraries)
def get_source_files(self) -> List[str]:
return [*_build_ext.get_source_files(self), *self._get_internal_depends()]
def _get_internal_depends(self) -> Iterator[str]:
"""Yield ``ext.depends`` that are contained by the project directory"""
project_root = Path(self.distribution.src_root or os.curdir).resolve()
depends = (dep for ext in self.extensions for dep in ext.depends)
def skip(orig_path: str, reason: str) -> None:
log.info(
"dependency %s won't be automatically "
"included in the manifest: the path %s",
orig_path,
reason,
)
for dep in depends:
path = Path(dep)
if path.is_absolute():
skip(dep, "must be relative")
continue
if ".." in path.parts:
skip(dep, "can't have `..` segments")
continue
try:
resolved = (project_root / path).resolve(strict=True)
except OSError:
skip(dep, "doesn't exist")
continue
try:
resolved.relative_to(project_root)
except ValueError:
skip(dep, "must be inside the project root")
continue
yield path.as_posix()
def get_outputs(self) -> List[str]:
if self.inplace:
return list(self.get_output_mapping().keys())
return sorted(_build_ext.get_outputs(self) + self.__get_stubs_outputs())
def get_output_mapping(self) -> Dict[str, str]:
"""See :class:`setuptools.commands.build.SubCommand`"""
mapping = self._get_output_mapping()
return dict(sorted(mapping, key=lambda x: x[0]))
def __get_stubs_outputs(self):
# assemble the base name for each extension that needs a stub
ns_ext_bases = (
os.path.join(self.build_lib, *ext._full_name.split('.'))
for ext in self.extensions
if ext._needs_stub
)
# pair each base with the extension
pairs = itertools.product(ns_ext_bases, self.__get_output_extensions())
return list(base + fnext for base, fnext in pairs)
def __get_output_extensions(self):
yield '.py'
yield '.pyc'
if self.get_finalized_command('build_py').optimize:
yield '.pyo'
def write_stub(self, output_dir, ext, compile=False):
stub_file = os.path.join(output_dir, *ext._full_name.split('.')) + '.py'
self._write_stub_file(stub_file, ext, compile)
def _write_stub_file(self, stub_file: str, ext: Extension, compile=False):
log.info("writing stub loader for %s to %s", ext._full_name, stub_file)
if compile and os.path.exists(stub_file):
raise BaseError(stub_file + " already exists! Please delete.")
if not self.dry_run:
f = open(stub_file, 'w')
f.write(
'\n'.join(
[
"def __bootstrap__():",
" global __bootstrap__, __file__, __loader__",
" import sys, os, pkg_resources, importlib.util"
+ if_dl(", dl"),
" __file__ = pkg_resources.resource_filename"
"(__name__,%r)" % os.path.basename(ext._file_name),
" del __bootstrap__",
" if '__loader__' in globals():",
" del __loader__",
if_dl(" old_flags = sys.getdlopenflags()"),
" old_dir = os.getcwd()",
" try:",
" os.chdir(os.path.dirname(__file__))",
if_dl(" sys.setdlopenflags(dl.RTLD_NOW)"),
" spec = importlib.util.spec_from_file_location(",
" __name__, __file__)",
" mod = importlib.util.module_from_spec(spec)",
" spec.loader.exec_module(mod)",
" finally:",
if_dl(" sys.setdlopenflags(old_flags)"),
" os.chdir(old_dir)",
"__bootstrap__()",
"", # terminal \n
]
)
)
f.close()
if compile:
self._compile_and_remove_stub(stub_file)
def _compile_and_remove_stub(self, stub_file: str):
from distutils.util import byte_compile
byte_compile([stub_file], optimize=0, force=True, dry_run=self.dry_run)
optimize = self.get_finalized_command('install_lib').optimize
if optimize > 0:
byte_compile(
[stub_file], optimize=optimize, force=True, dry_run=self.dry_run
)
if os.path.exists(stub_file) and not self.dry_run:
os.unlink(stub_file)
if use_stubs or os.name == 'nt':
# Build shared libraries
#
def link_shared_object(
self,
objects,
output_libname,
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,
):
self.link(
self.SHARED_LIBRARY,
objects,
output_libname,
output_dir,
libraries,
library_dirs,
runtime_library_dirs,
export_symbols,
debug,
extra_preargs,
extra_postargs,
build_temp,
target_lang,
)
else:
# Build static libraries everywhere else
libtype = 'static'
def link_shared_object(
self,
objects,
output_libname,
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,
):
# XXX we need to either disallow these attrs on Library instances,
# or warn/abort here if set, or something...
# libraries=None, library_dirs=None, runtime_library_dirs=None,
# export_symbols=None, extra_preargs=None, extra_postargs=None,
# build_temp=None
assert output_dir is None # distutils build_ext doesn't pass this
output_dir, filename = os.path.split(output_libname)
basename, ext = os.path.splitext(filename)
if self.library_filename("x").startswith('lib'):
# strip 'lib' prefix; this is kludgy if some platform uses
# a different prefix
basename = basename[3:]
self.create_static_lib(objects, basename, output_dir, debug, target_lang)