776 lines
28 KiB
Python
776 lines
28 KiB
Python
"""Provide access to Python's configuration information.
|
|
|
|
"""
|
|
import sys
|
|
import os
|
|
from os.path import pardir, realpath
|
|
|
|
__all__ = [
|
|
'get_config_h_filename',
|
|
'get_config_var',
|
|
'get_config_vars',
|
|
'get_makefile_filename',
|
|
'get_path',
|
|
'get_path_names',
|
|
'get_paths',
|
|
'get_platform',
|
|
'get_python_version',
|
|
'get_scheme_names',
|
|
'parse_config_h',
|
|
]
|
|
|
|
_INSTALL_SCHEMES = {
|
|
'posix_prefix': {
|
|
'stdlib': '{base}/lib/python{py_version_short}',
|
|
'platstdlib': '{platbase}/lib/python{py_version_short}',
|
|
'purelib': '{base}/lib/python{py_version_short}/site-packages',
|
|
'platlib': '{platbase}/lib/python{py_version_short}/site-packages',
|
|
'include':
|
|
'{base}/include/python{py_version_short}{abiflags}',
|
|
'platinclude':
|
|
'{platbase}/include/python{py_version_short}{abiflags}',
|
|
'scripts': '{base}/bin',
|
|
'data': '{base}',
|
|
},
|
|
'posix_home': {
|
|
'stdlib': '{base}/lib/python',
|
|
'platstdlib': '{base}/lib/python',
|
|
'purelib': '{base}/lib/python',
|
|
'platlib': '{base}/lib/python',
|
|
'include': '{base}/include/python',
|
|
'platinclude': '{base}/include/python',
|
|
'scripts': '{base}/bin',
|
|
'data' : '{base}',
|
|
},
|
|
'nt': {
|
|
'stdlib': '{base}/Lib',
|
|
'platstdlib': '{base}/Lib',
|
|
'purelib': '{base}/Lib/site-packages',
|
|
'platlib': '{base}/Lib/site-packages',
|
|
'include': '{base}/Include',
|
|
'platinclude': '{base}/Include',
|
|
'scripts': '{base}/Scripts',
|
|
'data' : '{base}',
|
|
},
|
|
'os2': {
|
|
'stdlib': '{base}/Lib',
|
|
'platstdlib': '{base}/Lib',
|
|
'purelib': '{base}/Lib/site-packages',
|
|
'platlib': '{base}/Lib/site-packages',
|
|
'include': '{base}/Include',
|
|
'platinclude': '{base}/Include',
|
|
'scripts': '{base}/Scripts',
|
|
'data' : '{base}',
|
|
},
|
|
'os2_home': {
|
|
'stdlib': '{userbase}/lib/python{py_version_short}',
|
|
'platstdlib': '{userbase}/lib/python{py_version_short}',
|
|
'purelib': '{userbase}/lib/python{py_version_short}/site-packages',
|
|
'platlib': '{userbase}/lib/python{py_version_short}/site-packages',
|
|
'include': '{userbase}/include/python{py_version_short}',
|
|
'scripts': '{userbase}/bin',
|
|
'data' : '{userbase}',
|
|
},
|
|
'nt_user': {
|
|
'stdlib': '{userbase}/Python{py_version_nodot}',
|
|
'platstdlib': '{userbase}/Python{py_version_nodot}',
|
|
'purelib': '{userbase}/Python{py_version_nodot}/site-packages',
|
|
'platlib': '{userbase}/Python{py_version_nodot}/site-packages',
|
|
'include': '{userbase}/Python{py_version_nodot}/Include',
|
|
'scripts': '{userbase}/Scripts',
|
|
'data' : '{userbase}',
|
|
},
|
|
'posix_user': {
|
|
'stdlib': '{userbase}/lib/python{py_version_short}',
|
|
'platstdlib': '{userbase}/lib/python{py_version_short}',
|
|
'purelib': '{userbase}/lib/python{py_version_short}/site-packages',
|
|
'platlib': '{userbase}/lib/python{py_version_short}/site-packages',
|
|
'include': '{userbase}/include/python{py_version_short}',
|
|
'scripts': '{userbase}/bin',
|
|
'data' : '{userbase}',
|
|
},
|
|
'osx_framework_user': {
|
|
'stdlib': '{userbase}/lib/python',
|
|
'platstdlib': '{userbase}/lib/python',
|
|
'purelib': '{userbase}/lib/python/site-packages',
|
|
'platlib': '{userbase}/lib/python/site-packages',
|
|
'include': '{userbase}/include',
|
|
'scripts': '{userbase}/bin',
|
|
'data' : '{userbase}',
|
|
},
|
|
}
|
|
|
|
_SCHEME_KEYS = ('stdlib', 'platstdlib', 'purelib', 'platlib', 'include',
|
|
'scripts', 'data')
|
|
_PY_VERSION = sys.version.split()[0]
|
|
_PY_VERSION_SHORT = sys.version[:3]
|
|
_PY_VERSION_SHORT_NO_DOT = _PY_VERSION[0] + _PY_VERSION[2]
|
|
_PREFIX = os.path.normpath(sys.prefix)
|
|
_EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
|
|
_CONFIG_VARS = None
|
|
_USER_BASE = None
|
|
|
|
def _safe_realpath(path):
|
|
try:
|
|
return realpath(path)
|
|
except OSError:
|
|
return path
|
|
|
|
if sys.executable:
|
|
_PROJECT_BASE = os.path.dirname(_safe_realpath(sys.executable))
|
|
else:
|
|
# sys.executable can be empty if argv[0] has been changed and Python is
|
|
# unable to retrieve the real program name
|
|
_PROJECT_BASE = _safe_realpath(os.getcwd())
|
|
|
|
if os.name == "nt" and "pcbuild" in _PROJECT_BASE[-8:].lower():
|
|
_PROJECT_BASE = _safe_realpath(os.path.join(_PROJECT_BASE, pardir))
|
|
# PC/VS7.1
|
|
if os.name == "nt" and "\\pc\\v" in _PROJECT_BASE[-10:].lower():
|
|
_PROJECT_BASE = _safe_realpath(os.path.join(_PROJECT_BASE, pardir, pardir))
|
|
# PC/AMD64
|
|
if os.name == "nt" and "\\pcbuild\\amd64" in _PROJECT_BASE[-14:].lower():
|
|
_PROJECT_BASE = _safe_realpath(os.path.join(_PROJECT_BASE, pardir, pardir))
|
|
|
|
def is_python_build():
|
|
for fn in ("Setup.dist", "Setup.local"):
|
|
if os.path.isfile(os.path.join(_PROJECT_BASE, "Modules", fn)):
|
|
return True
|
|
return False
|
|
|
|
_PYTHON_BUILD = is_python_build()
|
|
|
|
if _PYTHON_BUILD:
|
|
for scheme in ('posix_prefix', 'posix_home'):
|
|
_INSTALL_SCHEMES[scheme]['include'] = '{srcdir}/Include'
|
|
_INSTALL_SCHEMES[scheme]['platinclude'] = '{projectbase}/.'
|
|
|
|
def _subst_vars(s, local_vars):
|
|
try:
|
|
return s.format(**local_vars)
|
|
except KeyError:
|
|
try:
|
|
return s.format(**os.environ)
|
|
except KeyError as var:
|
|
raise AttributeError('{%s}' % var)
|
|
|
|
def _extend_dict(target_dict, other_dict):
|
|
target_keys = target_dict.keys()
|
|
for key, value in other_dict.items():
|
|
if key in target_keys:
|
|
continue
|
|
target_dict[key] = value
|
|
|
|
def _expand_vars(scheme, vars):
|
|
res = {}
|
|
if vars is None:
|
|
vars = {}
|
|
_extend_dict(vars, get_config_vars())
|
|
|
|
for key, value in _INSTALL_SCHEMES[scheme].items():
|
|
if os.name in ('posix', 'nt'):
|
|
value = os.path.expanduser(value)
|
|
res[key] = os.path.normpath(_subst_vars(value, vars))
|
|
return res
|
|
|
|
def _get_default_scheme():
|
|
if os.name == 'posix':
|
|
# the default scheme for posix is posix_prefix
|
|
return 'posix_prefix'
|
|
return os.name
|
|
|
|
def _getuserbase():
|
|
env_base = os.environ.get("PYTHONUSERBASE", None)
|
|
def joinuser(*args):
|
|
return os.path.expanduser(os.path.join(*args))
|
|
|
|
# what about 'os2emx', 'riscos' ?
|
|
if os.name == "nt":
|
|
base = os.environ.get("APPDATA") or "~"
|
|
return env_base if env_base else joinuser(base, "Python")
|
|
|
|
if sys.platform == "darwin":
|
|
framework = get_config_var("PYTHONFRAMEWORK")
|
|
if framework:
|
|
return env_base if env_base else joinuser("~", "Library", framework, "%d.%d"%(
|
|
sys.version_info[:2]))
|
|
|
|
return env_base if env_base else joinuser("~", ".local")
|
|
|
|
|
|
def _parse_makefile(filename, vars=None):
|
|
"""Parse a Makefile-style file.
|
|
|
|
A dictionary containing name/value pairs is returned. If an
|
|
optional dictionary is passed in as the second argument, it is
|
|
used instead of a new dictionary.
|
|
"""
|
|
import re
|
|
# Regexes needed for parsing Makefile (and similar syntaxes,
|
|
# like old-style Setup files).
|
|
_variable_rx = re.compile("([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*(.*)")
|
|
_findvar1_rx = re.compile(r"\$\(([A-Za-z][A-Za-z0-9_]*)\)")
|
|
_findvar2_rx = re.compile(r"\${([A-Za-z][A-Za-z0-9_]*)}")
|
|
|
|
if vars is None:
|
|
vars = {}
|
|
done = {}
|
|
notdone = {}
|
|
|
|
with open(filename, errors="surrogateescape") as f:
|
|
lines = f.readlines()
|
|
|
|
for line in lines:
|
|
if line.startswith('#') or line.strip() == '':
|
|
continue
|
|
m = _variable_rx.match(line)
|
|
if m:
|
|
n, v = m.group(1, 2)
|
|
v = v.strip()
|
|
# `$$' is a literal `$' in make
|
|
tmpv = v.replace('$$', '')
|
|
|
|
if "$" in tmpv:
|
|
notdone[n] = v
|
|
else:
|
|
try:
|
|
v = int(v)
|
|
except ValueError:
|
|
# insert literal `$'
|
|
done[n] = v.replace('$$', '$')
|
|
else:
|
|
done[n] = v
|
|
|
|
# do variable interpolation here
|
|
variables = list(notdone.keys())
|
|
|
|
# Variables with a 'PY_' prefix in the makefile. These need to
|
|
# be made available without that prefix through sysconfig.
|
|
# Special care is needed to ensure that variable expansion works, even
|
|
# if the expansion uses the name without a prefix.
|
|
renamed_variables = ('CFLAGS', 'LDFLAGS', 'CPPFLAGS')
|
|
|
|
while len(variables) > 0:
|
|
for name in tuple(variables):
|
|
value = notdone[name]
|
|
m = _findvar1_rx.search(value) or _findvar2_rx.search(value)
|
|
if m is not None:
|
|
n = m.group(1)
|
|
found = True
|
|
if n in done:
|
|
item = str(done[n])
|
|
elif n in notdone:
|
|
# get it on a subsequent round
|
|
found = False
|
|
elif n in os.environ:
|
|
# do it like make: fall back to environment
|
|
item = os.environ[n]
|
|
|
|
elif n in renamed_variables:
|
|
if name.startswith('PY_') and name[3:] in renamed_variables:
|
|
item = ""
|
|
|
|
elif 'PY_' + n in notdone:
|
|
found = False
|
|
|
|
else:
|
|
item = str(done['PY_' + n])
|
|
|
|
else:
|
|
done[n] = item = ""
|
|
|
|
if found:
|
|
after = value[m.end():]
|
|
value = value[:m.start()] + item + after
|
|
if "$" in after:
|
|
notdone[name] = value
|
|
else:
|
|
try:
|
|
value = int(value)
|
|
except ValueError:
|
|
done[name] = value.strip()
|
|
else:
|
|
done[name] = value
|
|
variables.remove(name)
|
|
|
|
if name.startswith('PY_') \
|
|
and name[3:] in renamed_variables:
|
|
|
|
name = name[3:]
|
|
if name not in done:
|
|
done[name] = value
|
|
|
|
|
|
else:
|
|
# bogus variable reference; just drop it since we can't deal
|
|
variables.remove(name)
|
|
|
|
# strip spurious spaces
|
|
for k, v in done.items():
|
|
if isinstance(v, str):
|
|
done[k] = v.strip()
|
|
|
|
# save the results in the global dictionary
|
|
vars.update(done)
|
|
return vars
|
|
|
|
|
|
def get_makefile_filename():
|
|
"""Return the path of the Makefile."""
|
|
if _PYTHON_BUILD:
|
|
return os.path.join(_PROJECT_BASE, "Makefile")
|
|
return os.path.join(get_path('stdlib'),
|
|
'config-{}{}'.format(_PY_VERSION_SHORT, sys.abiflags),
|
|
'Makefile')
|
|
|
|
|
|
def _init_posix(vars):
|
|
"""Initialize the module as appropriate for POSIX systems."""
|
|
# load the installed Makefile:
|
|
makefile = get_makefile_filename()
|
|
try:
|
|
_parse_makefile(makefile, vars)
|
|
except IOError as e:
|
|
msg = "invalid Python installation: unable to open %s" % makefile
|
|
if hasattr(e, "strerror"):
|
|
msg = msg + " (%s)" % e.strerror
|
|
raise IOError(msg)
|
|
# load the installed pyconfig.h:
|
|
config_h = get_config_h_filename()
|
|
try:
|
|
with open(config_h) as f:
|
|
parse_config_h(f, vars)
|
|
except IOError as e:
|
|
msg = "invalid Python installation: unable to open %s" % config_h
|
|
if hasattr(e, "strerror"):
|
|
msg = msg + " (%s)" % e.strerror
|
|
raise IOError(msg)
|
|
# On MacOSX we need to check the setting of the environment variable
|
|
# MACOSX_DEPLOYMENT_TARGET: configure bases some choices on it so
|
|
# it needs to be compatible.
|
|
# If it isn't set we set it to the configure-time value
|
|
if sys.platform == 'darwin' and 'MACOSX_DEPLOYMENT_TARGET' in vars:
|
|
cfg_target = vars['MACOSX_DEPLOYMENT_TARGET']
|
|
cur_target = os.getenv('MACOSX_DEPLOYMENT_TARGET', '')
|
|
if cur_target == '':
|
|
cur_target = cfg_target
|
|
os.putenv('MACOSX_DEPLOYMENT_TARGET', cfg_target)
|
|
elif (list(map(int, cfg_target.split('.'))) >
|
|
list(map(int, cur_target.split('.')))):
|
|
msg = ('$MACOSX_DEPLOYMENT_TARGET mismatch: now "%s" but "%s" '
|
|
'during configure' % (cur_target, cfg_target))
|
|
raise IOError(msg)
|
|
# On AIX, there are wrong paths to the linker scripts in the Makefile
|
|
# -- these paths are relative to the Python source, but when installed
|
|
# the scripts are in another directory.
|
|
if _PYTHON_BUILD:
|
|
vars['LDSHARED'] = vars['BLDSHARED']
|
|
|
|
def _init_non_posix(vars):
|
|
"""Initialize the module as appropriate for NT"""
|
|
# set basic install directories
|
|
vars['LIBDEST'] = get_path('stdlib')
|
|
vars['BINLIBDEST'] = get_path('platstdlib')
|
|
vars['INCLUDEPY'] = get_path('include')
|
|
vars['SO'] = '.pyd'
|
|
vars['EXE'] = '.exe'
|
|
vars['VERSION'] = _PY_VERSION_SHORT_NO_DOT
|
|
vars['BINDIR'] = os.path.dirname(_safe_realpath(sys.executable))
|
|
|
|
#
|
|
# public APIs
|
|
#
|
|
|
|
|
|
def parse_config_h(fp, vars=None):
|
|
"""Parse a config.h-style file.
|
|
|
|
A dictionary containing name/value pairs is returned. If an
|
|
optional dictionary is passed in as the second argument, it is
|
|
used instead of a new dictionary.
|
|
"""
|
|
import re
|
|
if vars is None:
|
|
vars = {}
|
|
define_rx = re.compile("#define ([A-Z][A-Za-z0-9_]+) (.*)\n")
|
|
undef_rx = re.compile("/[*] #undef ([A-Z][A-Za-z0-9_]+) [*]/\n")
|
|
|
|
while True:
|
|
line = fp.readline()
|
|
if not line:
|
|
break
|
|
m = define_rx.match(line)
|
|
if m:
|
|
n, v = m.group(1, 2)
|
|
try: v = int(v)
|
|
except ValueError: pass
|
|
vars[n] = v
|
|
else:
|
|
m = undef_rx.match(line)
|
|
if m:
|
|
vars[m.group(1)] = 0
|
|
return vars
|
|
|
|
def get_config_h_filename():
|
|
"""Return the path of pyconfig.h."""
|
|
if _PYTHON_BUILD:
|
|
if os.name == "nt":
|
|
inc_dir = os.path.join(_PROJECT_BASE, "PC")
|
|
else:
|
|
inc_dir = _PROJECT_BASE
|
|
else:
|
|
inc_dir = get_path('platinclude')
|
|
return os.path.join(inc_dir, 'pyconfig.h')
|
|
|
|
def get_scheme_names():
|
|
"""Return a tuple containing the schemes names."""
|
|
schemes = list(_INSTALL_SCHEMES.keys())
|
|
schemes.sort()
|
|
return tuple(schemes)
|
|
|
|
def get_path_names():
|
|
"""Return a tuple containing the paths names."""
|
|
return _SCHEME_KEYS
|
|
|
|
def get_paths(scheme=_get_default_scheme(), vars=None, expand=True):
|
|
"""Return a mapping containing an install scheme.
|
|
|
|
``scheme`` is the install scheme name. If not provided, it will
|
|
return the default scheme for the current platform.
|
|
"""
|
|
if expand:
|
|
return _expand_vars(scheme, vars)
|
|
else:
|
|
return _INSTALL_SCHEMES[scheme]
|
|
|
|
def get_path(name, scheme=_get_default_scheme(), vars=None, expand=True):
|
|
"""Return a path corresponding to the scheme.
|
|
|
|
``scheme`` is the install scheme name.
|
|
"""
|
|
return get_paths(scheme, vars, expand)[name]
|
|
|
|
def get_config_vars(*args):
|
|
"""With no arguments, return a dictionary of all configuration
|
|
variables relevant for the current platform.
|
|
|
|
On Unix, this means every variable defined in Python's installed Makefile;
|
|
On Windows and Mac OS it's a much smaller set.
|
|
|
|
With arguments, return a list of values that result from looking up
|
|
each argument in the configuration variable dictionary.
|
|
"""
|
|
import re
|
|
global _CONFIG_VARS
|
|
if _CONFIG_VARS is None:
|
|
_CONFIG_VARS = {}
|
|
# Normalized versions of prefix and exec_prefix are handy to have;
|
|
# in fact, these are the standard versions used most places in the
|
|
# Distutils.
|
|
_CONFIG_VARS['prefix'] = _PREFIX
|
|
_CONFIG_VARS['exec_prefix'] = _EXEC_PREFIX
|
|
_CONFIG_VARS['py_version'] = _PY_VERSION
|
|
_CONFIG_VARS['py_version_short'] = _PY_VERSION_SHORT
|
|
_CONFIG_VARS['py_version_nodot'] = _PY_VERSION[0] + _PY_VERSION[2]
|
|
_CONFIG_VARS['base'] = _PREFIX
|
|
_CONFIG_VARS['platbase'] = _EXEC_PREFIX
|
|
_CONFIG_VARS['projectbase'] = _PROJECT_BASE
|
|
_CONFIG_VARS['abiflags'] = sys.abiflags
|
|
|
|
if os.name in ('nt', 'os2'):
|
|
_init_non_posix(_CONFIG_VARS)
|
|
if os.name == 'posix':
|
|
_init_posix(_CONFIG_VARS)
|
|
# Setting 'userbase' is done below the call to the
|
|
# init function to enable using 'get_config_var' in
|
|
# the init-function.
|
|
_CONFIG_VARS['userbase'] = _getuserbase()
|
|
|
|
if 'srcdir' not in _CONFIG_VARS:
|
|
_CONFIG_VARS['srcdir'] = _PROJECT_BASE
|
|
else:
|
|
_CONFIG_VARS['srcdir'] = _safe_realpath(_CONFIG_VARS['srcdir'])
|
|
|
|
|
|
# Convert srcdir into an absolute path if it appears necessary.
|
|
# Normally it is relative to the build directory. However, during
|
|
# testing, for example, we might be running a non-installed python
|
|
# from a different directory.
|
|
if _PYTHON_BUILD and os.name == "posix":
|
|
base = _PROJECT_BASE
|
|
try:
|
|
cwd = os.getcwd()
|
|
except OSError:
|
|
cwd = None
|
|
if (not os.path.isabs(_CONFIG_VARS['srcdir']) and
|
|
base != cwd):
|
|
# srcdir is relative and we are not in the same directory
|
|
# as the executable. Assume executable is in the build
|
|
# directory and make srcdir absolute.
|
|
srcdir = os.path.join(base, _CONFIG_VARS['srcdir'])
|
|
_CONFIG_VARS['srcdir'] = os.path.normpath(srcdir)
|
|
|
|
if sys.platform == 'darwin':
|
|
kernel_version = os.uname()[2] # Kernel version (8.4.3)
|
|
major_version = int(kernel_version.split('.')[0])
|
|
|
|
if major_version < 8:
|
|
# On Mac OS X before 10.4, check if -arch and -isysroot
|
|
# are in CFLAGS or LDFLAGS and remove them if they are.
|
|
# This is needed when building extensions on a 10.3 system
|
|
# using a universal build of python.
|
|
for key in ('LDFLAGS', 'BASECFLAGS',
|
|
# a number of derived variables. These need to be
|
|
# patched up as well.
|
|
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
|
|
flags = _CONFIG_VARS[key]
|
|
flags = re.sub('-arch\s+\w+\s', ' ', flags)
|
|
flags = re.sub('-isysroot [^ \t]*', ' ', flags)
|
|
_CONFIG_VARS[key] = flags
|
|
else:
|
|
# Allow the user to override the architecture flags using
|
|
# an environment variable.
|
|
# NOTE: This name was introduced by Apple in OSX 10.5 and
|
|
# is used by several scripting languages distributed with
|
|
# that OS release.
|
|
if 'ARCHFLAGS' in os.environ:
|
|
arch = os.environ['ARCHFLAGS']
|
|
for key in ('LDFLAGS', 'BASECFLAGS',
|
|
# a number of derived variables. These need to be
|
|
# patched up as well.
|
|
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
|
|
|
|
flags = _CONFIG_VARS[key]
|
|
flags = re.sub('-arch\s+\w+\s', ' ', flags)
|
|
flags = flags + ' ' + arch
|
|
_CONFIG_VARS[key] = flags
|
|
|
|
# If we're on OSX 10.5 or later and the user tries to
|
|
# compiles an extension using an SDK that is not present
|
|
# on the current machine it is better to not use an SDK
|
|
# than to fail.
|
|
#
|
|
# The major usecase for this is users using a Python.org
|
|
# binary installer on OSX 10.6: that installer uses
|
|
# the 10.4u SDK, but that SDK is not installed by default
|
|
# when you install Xcode.
|
|
#
|
|
CFLAGS = _CONFIG_VARS.get('CFLAGS', '')
|
|
m = re.search('-isysroot\s+(\S+)', CFLAGS)
|
|
if m is not None:
|
|
sdk = m.group(1)
|
|
if not os.path.exists(sdk):
|
|
for key in ('LDFLAGS', 'BASECFLAGS',
|
|
# a number of derived variables. These need to be
|
|
# patched up as well.
|
|
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
|
|
|
|
flags = _CONFIG_VARS[key]
|
|
flags = re.sub('-isysroot\s+\S+(\s|$)', ' ', flags)
|
|
_CONFIG_VARS[key] = flags
|
|
|
|
if args:
|
|
vals = []
|
|
for name in args:
|
|
vals.append(_CONFIG_VARS.get(name))
|
|
return vals
|
|
else:
|
|
return _CONFIG_VARS
|
|
|
|
def get_config_var(name):
|
|
"""Return the value of a single variable using the dictionary returned by
|
|
'get_config_vars()'.
|
|
|
|
Equivalent to get_config_vars().get(name)
|
|
"""
|
|
return get_config_vars().get(name)
|
|
|
|
def get_platform():
|
|
"""Return a string that identifies the current platform.
|
|
|
|
This is used mainly to distinguish platform-specific build directories and
|
|
platform-specific built distributions. Typically includes the OS name
|
|
and version and the architecture (as supplied by 'os.uname()'),
|
|
although the exact information included depends on the OS; eg. for IRIX
|
|
the architecture isn't particularly important (IRIX only runs on SGI
|
|
hardware), but for Linux the kernel version isn't particularly
|
|
important.
|
|
|
|
Examples of returned values:
|
|
linux-i586
|
|
linux-alpha (?)
|
|
solaris-2.6-sun4u
|
|
irix-5.3
|
|
irix64-6.2
|
|
|
|
Windows will return one of:
|
|
win-amd64 (64bit Windows on AMD64 (aka x86_64, Intel64, EM64T, etc)
|
|
win-ia64 (64bit Windows on Itanium)
|
|
win32 (all others - specifically, sys.platform is returned)
|
|
|
|
For other non-POSIX platforms, currently just returns 'sys.platform'.
|
|
"""
|
|
import re
|
|
if os.name == 'nt':
|
|
# sniff sys.version for architecture.
|
|
prefix = " bit ("
|
|
i = sys.version.find(prefix)
|
|
if i == -1:
|
|
return sys.platform
|
|
j = sys.version.find(")", i)
|
|
look = sys.version[i+len(prefix):j].lower()
|
|
if look == 'amd64':
|
|
return 'win-amd64'
|
|
if look == 'itanium':
|
|
return 'win-ia64'
|
|
return sys.platform
|
|
|
|
if os.name != "posix" or not hasattr(os, 'uname'):
|
|
# XXX what about the architecture? NT is Intel or Alpha,
|
|
# Mac OS is M68k or PPC, etc.
|
|
return sys.platform
|
|
|
|
# Try to distinguish various flavours of Unix
|
|
osname, host, release, version, machine = os.uname()
|
|
|
|
# Convert the OS name to lowercase, remove '/' characters
|
|
# (to accommodate BSD/OS), and translate spaces (for "Power Macintosh")
|
|
osname = osname.lower().replace('/', '')
|
|
machine = machine.replace(' ', '_')
|
|
machine = machine.replace('/', '-')
|
|
|
|
if osname[:5] == "linux":
|
|
# At least on Linux/Intel, 'machine' is the processor --
|
|
# i386, etc.
|
|
# XXX what about Alpha, SPARC, etc?
|
|
return "%s-%s" % (osname, machine)
|
|
elif osname[:5] == "sunos":
|
|
if release[0] >= "5": # SunOS 5 == Solaris 2
|
|
osname = "solaris"
|
|
release = "%d.%s" % (int(release[0]) - 3, release[2:])
|
|
# fall through to standard osname-release-machine representation
|
|
elif osname[:4] == "irix": # could be "irix64"!
|
|
return "%s-%s" % (osname, release)
|
|
elif osname[:3] == "aix":
|
|
return "%s-%s.%s" % (osname, version, release)
|
|
elif osname[:6] == "cygwin":
|
|
osname = "cygwin"
|
|
rel_re = re.compile (r'[\d.]+')
|
|
m = rel_re.match(release)
|
|
if m:
|
|
release = m.group()
|
|
elif osname[:6] == "darwin":
|
|
#
|
|
# For our purposes, we'll assume that the system version from
|
|
# distutils' perspective is what MACOSX_DEPLOYMENT_TARGET is set
|
|
# to. This makes the compatibility story a bit more sane because the
|
|
# machine is going to compile and link as if it were
|
|
# MACOSX_DEPLOYMENT_TARGET.
|
|
cfgvars = get_config_vars()
|
|
macver = os.environ.get('MACOSX_DEPLOYMENT_TARGET')
|
|
if not macver:
|
|
macver = cfgvars.get('MACOSX_DEPLOYMENT_TARGET')
|
|
|
|
if 1:
|
|
# Always calculate the release of the running machine,
|
|
# needed to determine if we can build fat binaries or not.
|
|
|
|
macrelease = macver
|
|
# Get the system version. Reading this plist is a documented
|
|
# way to get the system version (see the documentation for
|
|
# the Gestalt Manager)
|
|
try:
|
|
f = open('/System/Library/CoreServices/SystemVersion.plist')
|
|
except IOError:
|
|
# We're on a plain darwin box, fall back to the default
|
|
# behaviour.
|
|
pass
|
|
else:
|
|
try:
|
|
m = re.search(
|
|
r'<key>ProductUserVisibleVersion</key>\s*' +
|
|
r'<string>(.*?)</string>', f.read())
|
|
f.close()
|
|
if m is not None:
|
|
macrelease = '.'.join(m.group(1).split('.')[:2])
|
|
# else: fall back to the default behaviour
|
|
finally:
|
|
f.close()
|
|
|
|
if not macver:
|
|
macver = macrelease
|
|
|
|
if macver:
|
|
release = macver
|
|
osname = "macosx"
|
|
|
|
if (macrelease + '.') >= '10.4.' and \
|
|
'-arch' in get_config_vars().get('CFLAGS', '').strip():
|
|
# The universal build will build fat binaries, but not on
|
|
# systems before 10.4
|
|
#
|
|
# Try to detect 4-way universal builds, those have machine-type
|
|
# 'universal' instead of 'fat'.
|
|
|
|
machine = 'fat'
|
|
cflags = get_config_vars().get('CFLAGS')
|
|
|
|
archs = re.findall('-arch\s+(\S+)', cflags)
|
|
archs = tuple(sorted(set(archs)))
|
|
|
|
if len(archs) == 1:
|
|
machine = archs[0]
|
|
elif archs == ('i386', 'ppc'):
|
|
machine = 'fat'
|
|
elif archs == ('i386', 'x86_64'):
|
|
machine = 'intel'
|
|
elif archs == ('i386', 'ppc', 'x86_64'):
|
|
machine = 'fat3'
|
|
elif archs == ('ppc64', 'x86_64'):
|
|
machine = 'fat64'
|
|
elif archs == ('i386', 'ppc', 'ppc64', 'x86_64'):
|
|
machine = 'universal'
|
|
else:
|
|
raise ValueError(
|
|
"Don't know machine value for archs=%r"%(archs,))
|
|
|
|
elif machine == 'i386':
|
|
# On OSX the machine type returned by uname is always the
|
|
# 32-bit variant, even if the executable architecture is
|
|
# the 64-bit variant
|
|
if sys.maxsize >= 2**32:
|
|
machine = 'x86_64'
|
|
|
|
elif machine in ('PowerPC', 'Power_Macintosh'):
|
|
# Pick a sane name for the PPC architecture.
|
|
# See 'i386' case
|
|
if sys.maxsize >= 2**32:
|
|
machine = 'ppc64'
|
|
else:
|
|
machine = 'ppc'
|
|
|
|
return "%s-%s-%s" % (osname, release, machine)
|
|
|
|
|
|
def get_python_version():
|
|
return _PY_VERSION_SHORT
|
|
|
|
def _print_dict(title, data):
|
|
for index, (key, value) in enumerate(sorted(data.items())):
|
|
if index == 0:
|
|
print('{0}: '.format(title))
|
|
print('\t{0} = "{1}"'.format(key, value))
|
|
|
|
def _main():
|
|
"""Display all information sysconfig detains."""
|
|
print('Platform: "{0}"'.format(get_platform()))
|
|
print('Python version: "{0}"'.format(get_python_version()))
|
|
print('Current installation scheme: "{0}"'.format(_get_default_scheme()))
|
|
print('')
|
|
_print_dict('Paths', get_paths())
|
|
print('')
|
|
_print_dict('Variables', get_config_vars())
|
|
|
|
if __name__ == '__main__':
|
|
_main()
|