bpo-36146: Don't run code at setup.py top level (GH-12127)
* Move set_compiler_flags() calls and concurrent.future hack from module top-level to main() * Remove unused variables 'macros' and 'libraries' from detect_multiprocessing(). * Move SUMMARY and CLASSIFIERS constants at the top, move set_compiler_flags() function below these constants. * Add some empty new lines to respect PEP 8.
This commit is contained in:
Victor Stinner
GitHub
parent
5ec33a1c25
commit
c991f2415d
144
setup.py
144
setup.py
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@ -1,5 +1,4 @@
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# Autodetecting setup.py script for building the Python extensions
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#
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import argparse
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import importlib._bootstrap
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@ -20,32 +19,19 @@ from distutils.core import Extension, setup
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from distutils.errors import CCompilerError, DistutilsError
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from distutils.spawn import find_executable
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CROSS_COMPILING = "_PYTHON_HOST_PLATFORM" in os.environ
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# Set common compiler and linker flags derived from the Makefile,
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# reserved for building the interpreter and the stdlib modules.
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# See bpo-21121 and bpo-35257
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def set_compiler_flags(compiler_flags, compiler_py_flags_nodist):
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flags = sysconfig.get_config_var(compiler_flags)
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py_flags_nodist = sysconfig.get_config_var(compiler_py_flags_nodist)
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sysconfig.get_config_vars()[compiler_flags] = flags + ' ' + py_flags_nodist
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set_compiler_flags('CFLAGS', 'PY_CFLAGS_NODIST')
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set_compiler_flags('LDFLAGS', 'PY_LDFLAGS_NODIST')
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class Dummy:
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"""Hack for parallel build"""
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ProcessPoolExecutor = None
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sys.modules['concurrent.futures.process'] = Dummy
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def get_platform():
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# cross build
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# Cross compiling
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if "_PYTHON_HOST_PLATFORM" in os.environ:
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return os.environ["_PYTHON_HOST_PLATFORM"]
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# Get value of sys.platform
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if sys.platform.startswith('osf1'):
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return 'osf1'
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return sys.platform
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CROSS_COMPILING = ("_PYTHON_HOST_PLATFORM" in os.environ)
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HOST_PLATFORM = get_platform()
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MS_WINDOWS = (HOST_PLATFORM == 'win32')
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CYGWIN = (HOST_PLATFORM == 'cygwin')
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@ -59,6 +45,45 @@ COMPILED_WITH_PYDEBUG = ('--with-pydebug' in sysconfig.get_config_var("CONFIG_AR
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# This global variable is used to hold the list of modules to be disabled.
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DISABLED_MODULE_LIST = []
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SUMMARY = """
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Python is an interpreted, interactive, object-oriented programming
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language. It is often compared to Tcl, Perl, Scheme or Java.
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Python combines remarkable power with very clear syntax. It has
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modules, classes, exceptions, very high level dynamic data types, and
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dynamic typing. There are interfaces to many system calls and
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libraries, as well as to various windowing systems (X11, Motif, Tk,
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Mac, MFC). New built-in modules are easily written in C or C++. Python
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is also usable as an extension language for applications that need a
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programmable interface.
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The Python implementation is portable: it runs on many brands of UNIX,
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on Windows, DOS, Mac, Amiga... If your favorite system isn't
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listed here, it may still be supported, if there's a C compiler for
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it. Ask around on comp.lang.python -- or just try compiling Python
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yourself.
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"""
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CLASSIFIERS = """
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Development Status :: 6 - Mature
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License :: OSI Approved :: Python Software Foundation License
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Natural Language :: English
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Programming Language :: C
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Programming Language :: Python
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Topic :: Software Development
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"""
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# Set common compiler and linker flags derived from the Makefile,
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# reserved for building the interpreter and the stdlib modules.
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# See bpo-21121 and bpo-35257
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def set_compiler_flags(compiler_flags, compiler_py_flags_nodist):
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flags = sysconfig.get_config_var(compiler_flags)
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py_flags_nodist = sysconfig.get_config_var(compiler_py_flags_nodist)
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sysconfig.get_config_vars()[compiler_flags] = flags + ' ' + py_flags_nodist
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def add_dir_to_list(dirlist, dir):
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"""Add the directory 'dir' to the list 'dirlist' (after any relative
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directories) if:
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@ -74,6 +99,7 @@ def add_dir_to_list(dirlist, dir):
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return
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dirlist.insert(0, dir)
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def sysroot_paths(make_vars, subdirs):
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"""Get the paths of sysroot sub-directories.
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@ -99,6 +125,7 @@ def sysroot_paths(make_vars, subdirs):
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break
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return dirs
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def macosx_sdk_root():
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"""
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Return the directory of the current OSX SDK,
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@ -112,6 +139,7 @@ def macosx_sdk_root():
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sysroot = m.group(1)
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return sysroot
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def is_macosx_sdk_path(path):
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"""
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Returns True if 'path' can be located in an OSX SDK
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@ -120,6 +148,7 @@ def is_macosx_sdk_path(path):
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or path.startswith('/System/')
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or path.startswith('/Library/') )
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def find_file(filename, std_dirs, paths):
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"""Searches for the directory where a given file is located,
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and returns a possibly-empty list of additional directories, or None
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@ -159,6 +188,7 @@ def find_file(filename, std_dirs, paths):
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# Not found anywhere
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return None
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def find_library_file(compiler, libname, std_dirs, paths):
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result = compiler.find_library_file(std_dirs + paths, libname)
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if result is None:
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@ -211,12 +241,14 @@ def find_library_file(compiler, libname, std_dirs, paths):
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else:
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assert False, "Internal error: Path not found in std_dirs or paths"
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def module_enabled(extlist, modname):
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"""Returns whether the module 'modname' is present in the list
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of extensions 'extlist'."""
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extlist = [ext for ext in extlist if ext.name == modname]
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return len(extlist)
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def find_module_file(module, dirlist):
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"""Find a module in a set of possible folders. If it is not found
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return the unadorned filename"""
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@ -227,6 +259,7 @@ def find_module_file(module, dirlist):
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log.info("WARNING: multiple copies of %s found", module)
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return os.path.join(list[0], module)
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class PyBuildExt(build_ext):
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def __init__(self, dist):
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@ -1558,44 +1591,17 @@ class PyBuildExt(build_ext):
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def detect_multiprocessing(self):
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# Richard Oudkerk's multiprocessing module
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if MS_WINDOWS:
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macros = dict()
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libraries = ['ws2_32']
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elif MACOS: # Mac OSX
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macros = dict()
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libraries = []
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elif CYGWIN:
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macros = dict()
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libraries = []
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elif HOST_PLATFORM.startswith('openbsd'):
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macros = dict()
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libraries = []
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elif HOST_PLATFORM.startswith('netbsd'):
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macros = dict()
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libraries = []
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else: # Linux and other unices
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macros = dict()
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libraries = ['rt']
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if MS_WINDOWS:
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multiprocessing_srcs = [ '_multiprocessing/multiprocessing.c',
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'_multiprocessing/semaphore.c',
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]
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multiprocessing_srcs = ['_multiprocessing/multiprocessing.c',
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'_multiprocessing/semaphore.c']
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else:
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multiprocessing_srcs = [ '_multiprocessing/multiprocessing.c',
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]
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multiprocessing_srcs = ['_multiprocessing/multiprocessing.c']
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if (sysconfig.get_config_var('HAVE_SEM_OPEN') and not
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sysconfig.get_config_var('POSIX_SEMAPHORES_NOT_ENABLED')):
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multiprocessing_srcs.append('_multiprocessing/semaphore.c')
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if (sysconfig.get_config_var('HAVE_SHM_OPEN') and
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sysconfig.get_config_var('HAVE_SHM_UNLINK')):
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posixshmem_srcs = [ '_multiprocessing/posixshmem.c',
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]
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posixshmem_srcs = ['_multiprocessing/posixshmem.c']
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libs = []
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if sysconfig.get_config_var('SHM_NEEDS_LIBRT'):
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# need to link with librt to get shm_open()
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@ -1606,7 +1612,6 @@ class PyBuildExt(build_ext):
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include_dirs=["Modules/_multiprocessing"]))
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self.add(Extension('_multiprocessing', multiprocessing_srcs,
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define_macros=list(macros.items()),
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include_dirs=["Modules/_multiprocessing"]))
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def detect_uuid(self):
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@ -2303,6 +2308,7 @@ class PyBuildInstallLib(install_lib):
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log.info("changing mode of %s to %o", dirpath, mode)
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if not self.dry_run: os.chmod(dirpath, mode)
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class PyBuildScripts(build_scripts):
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def copy_scripts(self):
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outfiles, updated_files = build_scripts.copy_scripts(self)
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@ -2322,35 +2328,17 @@ class PyBuildScripts(build_scripts):
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newupdated_files.append(newfilename)
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return newoutfiles, newupdated_files
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SUMMARY = """
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Python is an interpreted, interactive, object-oriented programming
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language. It is often compared to Tcl, Perl, Scheme or Java.
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Python combines remarkable power with very clear syntax. It has
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modules, classes, exceptions, very high level dynamic data types, and
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dynamic typing. There are interfaces to many system calls and
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libraries, as well as to various windowing systems (X11, Motif, Tk,
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Mac, MFC). New built-in modules are easily written in C or C++. Python
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is also usable as an extension language for applications that need a
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programmable interface.
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The Python implementation is portable: it runs on many brands of UNIX,
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on Windows, DOS, Mac, Amiga... If your favorite system isn't
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listed here, it may still be supported, if there's a C compiler for
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it. Ask around on comp.lang.python -- or just try compiling Python
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yourself.
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"""
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CLASSIFIERS = """
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Development Status :: 6 - Mature
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License :: OSI Approved :: Python Software Foundation License
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Natural Language :: English
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Programming Language :: C
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Programming Language :: Python
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Topic :: Software Development
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"""
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def main():
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set_compiler_flags('CFLAGS', 'PY_CFLAGS_NODIST')
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set_compiler_flags('LDFLAGS', 'PY_LDFLAGS_NODIST')
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class DummyProcess:
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"""Hack for parallel build"""
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ProcessPoolExecutor = None
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sys.modules['concurrent.futures.process'] = DummyProcess
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# turn off warnings when deprecated modules are imported
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import warnings
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warnings.filterwarnings("ignore",category=DeprecationWarning)
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