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"""Provide access to Python's configuration information.
This is actually PyPy's minimal configuration information.
The specific configuration variables available depend heavily on the
platform and configuration. The values may be retrieved using
get_config_var(name), and the list of variables is available via
get_config_vars().keys(). Additional convenience functions are also
available.
"""
import sys
import os
import _imp
from distutils.errors import DistutilsPlatformError
PREFIX = os.path.normpath(sys.prefix)
EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
BASE_PREFIX = os.path.normpath(sys.base_prefix)
BASE_EXEC_PREFIX = os.path.normpath(sys.base_exec_prefix)
project_base = os.path.dirname(os.path.abspath(sys.executable))
python_build = False
def get_python_inc(plat_specific=0, prefix=None):
if prefix is None:
prefix = plat_specific and BASE_EXEC_PREFIX or BASE_PREFIX
return os.path.join(prefix, 'include')
def get_python_version():
"""Return a string containing the major and minor Python version,
leaving off the patchlevel. Sample return values could be '1.5'
or '2.2'.
"""
return sys.version[:3]
def get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
"""Return the directory containing the Python library (standard or
site additions).
If 'plat_specific' is true, return the directory containing
platform-specific modules, i.e. any module from a non-pure-Python
module distribution; otherwise, return the platform-shared library
directory. If 'standard_lib' is true, return the directory
containing standard Python library modules; otherwise, return the
directory for site-specific modules.
If 'prefix' is supplied, use it instead of sys.prefix or
sys.exec_prefix -- i.e., ignore 'plat_specific'.
"""
is_default_prefix = not prefix or os.path.normpath(prefix).startswith(('/usr/lib/pypy3'))
in_ve = 'real_prefix' in sys.__dict__ or sys.prefix != sys.base_prefix
if prefix is None:
prefix = PREFIX
if standard_lib:
return os.path.join(prefix, "lib-python", sys.version[0])
if is_default_prefix and 'PYTHONUSERBASE' not in os.environ and not in_ve:
return os.path.join(prefix, 'dist-packages')
else:
return os.path.join(prefix, 'site-packages')
_config_vars = None
def _init_posix():
"""Initialize the module as appropriate for POSIX systems."""
from _sysconfigdata import build_time_vars
global _config_vars
_config_vars = build_time_vars
def _init_nt():
"""Initialize the module as appropriate for NT"""
g = {}
# set basic install directories
g['LIBDEST'] = get_python_lib(plat_specific=0, standard_lib=1)
g['BINLIBDEST'] = get_python_lib(plat_specific=1, standard_lib=1)
# XXX hmmm.. a normal install puts include files here
g['INCLUDEPY'] = get_python_inc(plat_specific=0)
g['EXT_SUFFIX'] = _imp.extension_suffixes()[0]
g['EXE'] = ".exe"
g['VERSION'] = get_python_version().replace(".", "")
g['BINDIR'] = os.path.dirname(os.path.abspath(sys.executable))
global _config_vars
_config_vars = g
def get_config_vars(*args):
"""With no arguments, return a dictionary of all configuration
variables relevant for the current platform. Generally this includes
everything needed to build extensions and install both pure modules and
extensions. 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.
"""
global _config_vars
if _config_vars is None:
func = globals().get("_init_" + os.name)
if func:
func()
else:
_config_vars = {}
_config_vars['prefix'] = PREFIX
_config_vars['exec_prefix'] = EXEC_PREFIX
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 customize_compiler(compiler):
"""Do any platform-specific customization of a CCompiler instance.
Mainly needed on Unix, so we can plug in the information that
varies across Unices and is stored in Python's Makefile.
"""
if compiler.compiler_type == "unix":
if sys.platform == "darwin":
# Perform first-time customization of compiler-related
# config vars on OS X now that we know we need a compiler.
# This is primarily to support Pythons from binary
# installers. The kind and paths to build tools on
# the user system may vary significantly from the system
# that Python itself was built on. Also the user OS
# version and build tools may not support the same set
# of CPU architectures for universal builds.
global _config_vars
# Use get_config_var() to ensure _config_vars is initialized.
if not get_config_var('CUSTOMIZED_OSX_COMPILER'):
import _osx_support
_osx_support.customize_compiler(_config_vars)
_config_vars['CUSTOMIZED_OSX_COMPILER'] = 'True'
(cc, cxx, opt, cflags, ccshared, ldshared, shlib_suffix, ar, ar_flags) = \
get_config_vars('CC', 'CXX', 'OPT', 'CFLAGS',
'CCSHARED', 'LDSHARED', 'SHLIB_SUFFIX', 'AR', 'ARFLAGS')
if 'CC' in os.environ:
newcc = os.environ['CC']
if (sys.platform == 'darwin'
and 'LDSHARED' not in os.environ
and ldshared.startswith(cc)):
# On OS X, if CC is overridden, use that as the default
# command for LDSHARED as well
ldshared = newcc + ldshared[len(cc):]
cc = newcc
if 'CXX' in os.environ:
cxx = os.environ['CXX']
if 'LDSHARED' in os.environ:
ldshared = os.environ['LDSHARED']
if 'CPP' in os.environ:
cpp = os.environ['CPP']
else:
cpp = cc + " -E" # not always
if 'LDFLAGS' in os.environ:
ldshared = ldshared + ' ' + os.environ['LDFLAGS']
if 'CFLAGS' in os.environ:
cflags = opt + ' ' + os.environ['CFLAGS']
ldshared = ldshared + ' ' + os.environ['CFLAGS']
if 'CPPFLAGS' in os.environ:
cpp = cpp + ' ' + os.environ['CPPFLAGS']
cflags = cflags + ' ' + os.environ['CPPFLAGS']
ldshared = ldshared + ' ' + os.environ['CPPFLAGS']
if 'AR' in os.environ:
ar = os.environ['AR']
if 'ARFLAGS' in os.environ:
archiver = ar + ' ' + os.environ['ARFLAGS']
else:
archiver = ar + ' ' + ar_flags
cc_cmd = cc + ' ' + cflags
compiler.set_executables(
preprocessor=cpp,
compiler=cc_cmd,
compiler_so=cc_cmd + ' ' + ccshared,
compiler_cxx=cxx,
linker_so=ldshared,
linker_exe=cc,
archiver=archiver)
compiler.shared_lib_extension = shlib_suffix
from .sysconfig_cpython import (
parse_makefile, _variable_rx, expand_makefile_vars)
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