diff options
Diffstat (limited to 'Lib/distutils/command/build_ext.py')
| -rw-r--r-- | Lib/distutils/command/build_ext.py | 107 |
1 files changed, 63 insertions, 44 deletions
diff --git a/Lib/distutils/command/build_ext.py b/Lib/distutils/command/build_ext.py index acbe648036..d4cb11e6db 100644 --- a/Lib/distutils/command/build_ext.py +++ b/Lib/distutils/command/build_ext.py @@ -4,7 +4,10 @@ Implements the Distutils 'build_ext' command, for building extension modules (currently limited to C extensions, should accommodate C++ extensions ASAP).""" -import sys, os, re +import contextlib +import os +import re +import sys from distutils.core import Command from distutils.errors import * from distutils.sysconfig import customize_compiler, get_python_version @@ -16,10 +19,6 @@ from distutils import log from site import USER_BASE -if os.name == 'nt': - from distutils.msvccompiler import get_build_version - MSVC_VERSION = int(get_build_version()) - # An extension name is just a dot-separated list of Python NAMEs (ie. # the same as a fully-qualified module name). extension_name_re = re.compile \ @@ -85,6 +84,8 @@ class build_ext(Command): "forcibly build everything (ignore file timestamps)"), ('compiler=', 'c', "specify the compiler type"), + ('parallel=', 'j', + "number of parallel build jobs"), ('swig-cpp', None, "make SWIG create C++ files (default is C)"), ('swig-opts=', None, @@ -124,6 +125,7 @@ class build_ext(Command): self.swig_cpp = None self.swig_opts = None self.user = None + self.parallel = None def finalize_options(self): from distutils import sysconfig @@ -134,6 +136,7 @@ class build_ext(Command): ('compiler', 'compiler'), ('debug', 'debug'), ('force', 'force'), + ('parallel', 'parallel'), ('plat_name', 'plat_name'), ) @@ -199,27 +202,17 @@ class build_ext(Command): _sys_home = getattr(sys, '_home', None) if _sys_home: self.library_dirs.append(_sys_home) - if MSVC_VERSION >= 9: - # Use the .lib files for the correct architecture - if self.plat_name == 'win32': - suffix = '' - else: - # win-amd64 or win-ia64 - suffix = self.plat_name[4:] - new_lib = os.path.join(sys.exec_prefix, 'PCbuild') - if suffix: - new_lib = os.path.join(new_lib, suffix) - self.library_dirs.append(new_lib) - - elif MSVC_VERSION == 8: - self.library_dirs.append(os.path.join(sys.exec_prefix, - 'PC', 'VS8.0')) - elif MSVC_VERSION == 7: - self.library_dirs.append(os.path.join(sys.exec_prefix, - 'PC', 'VS7.1')) + + # Use the .lib files for the correct architecture + if self.plat_name == 'win32': + suffix = 'win32' else: - self.library_dirs.append(os.path.join(sys.exec_prefix, - 'PC', 'VC6')) + # win-amd64 or win-ia64 + suffix = self.plat_name[4:] + new_lib = os.path.join(sys.exec_prefix, 'PCbuild') + if suffix: + new_lib = os.path.join(new_lib, suffix) + self.library_dirs.append(new_lib) # for extensions under Cygwin and AtheOS Python's library directory must be # appended to library_dirs @@ -274,6 +267,12 @@ class build_ext(Command): self.library_dirs.append(user_lib) self.rpath.append(user_lib) + if isinstance(self.parallel, str): + try: + self.parallel = int(self.parallel) + except ValueError: + raise DistutilsOptionError("parallel should be an integer") + def run(self): from distutils.ccompiler import new_compiler @@ -442,15 +441,45 @@ class build_ext(Command): def build_extensions(self): # First, sanity-check the 'extensions' list self.check_extensions_list(self.extensions) + if self.parallel: + self._build_extensions_parallel() + else: + self._build_extensions_serial() + + def _build_extensions_parallel(self): + workers = self.parallel + if self.parallel is True: + workers = os.cpu_count() # may return None + try: + from concurrent.futures import ThreadPoolExecutor + except ImportError: + workers = None + + if workers is None: + self._build_extensions_serial() + return + + with ThreadPoolExecutor(max_workers=workers) as executor: + futures = [executor.submit(self.build_extension, ext) + for ext in self.extensions] + for ext, fut in zip(self.extensions, futures): + with self._filter_build_errors(ext): + fut.result() + def _build_extensions_serial(self): for ext in self.extensions: - try: + with self._filter_build_errors(ext): self.build_extension(ext) - except (CCompilerError, DistutilsError, CompileError) as e: - if not ext.optional: - raise - self.warn('building extension "%s" failed: %s' % - (ext.name, e)) + + @contextlib.contextmanager + def _filter_build_errors(self, ext): + try: + yield + except (CCompilerError, DistutilsError, CompileError) as e: + if not ext.optional: + raise + self.warn('building extension "%s" failed: %s' % + (ext.name, e)) def build_extension(self, ext): sources = ext.sources @@ -502,15 +531,8 @@ class build_ext(Command): extra_postargs=extra_args, depends=ext.depends) - # XXX -- this is a Vile HACK! - # - # The setup.py script for Python on Unix needs to be able to - # get this list so it can perform all the clean up needed to - # avoid keeping object files around when cleaning out a failed - # build of an extension module. Since Distutils does not - # track dependencies, we have to get rid of intermediates to - # ensure all the intermediates will be properly re-built. - # + # XXX outdated variable, kept here in case third-part code + # needs it. self._built_objects = objects[:] # Now link the object files together into a "shared object" -- @@ -655,10 +677,7 @@ class build_ext(Command): """ from distutils.sysconfig import get_config_var ext_path = ext_name.split('.') - # extensions in debug_mode are named 'module_d.pyd' under windows ext_suffix = get_config_var('EXT_SUFFIX') - if os.name == 'nt' and self.debug: - return os.path.join(*ext_path) + '_d' + ext_suffix return os.path.join(*ext_path) + ext_suffix def get_export_symbols(self, ext): @@ -683,7 +702,7 @@ class build_ext(Command): # to need it mentioned explicitly, though, so that's what we do. # Append '_d' to the python import library on debug builds. if sys.platform == "win32": - from distutils.msvccompiler import MSVCCompiler + from distutils._msvccompiler import MSVCCompiler if not isinstance(self.compiler, MSVCCompiler): template = "python%d%d" if self.debug: |