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249 lines
8.9 KiB
Python
249 lines
8.9 KiB
Python
"""Provide access to Python's configuration information. The specific
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configuration variables available depend heavily on the platform and
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configuration. The values may be retrieved using
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get_config_var(name), and the list of variables is available via
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get_config_vars().keys(). Additional convenience functions are also
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available.
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Written by: Fred L. Drake, Jr.
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Email: <fdrake@acm.org>
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"""
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import _imp
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import os
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import re
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import sys
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import warnings
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from functools import partial
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from .errors import DistutilsPlatformError
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from sysconfig import (
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_PREFIX as PREFIX,
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_BASE_PREFIX as BASE_PREFIX,
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_EXEC_PREFIX as EXEC_PREFIX,
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_BASE_EXEC_PREFIX as BASE_EXEC_PREFIX,
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_PROJECT_BASE as project_base,
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_PYTHON_BUILD as python_build,
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_init_posix as sysconfig_init_posix,
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parse_config_h as sysconfig_parse_config_h,
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_parse_makefile as sysconfig_parse_makefile,
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_init_non_posix,
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_is_python_source_dir,
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_sys_home,
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_variable_rx,
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_findvar1_rx,
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_findvar2_rx,
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expand_makefile_vars,
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is_python_build,
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get_config_h_filename,
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get_config_var,
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get_config_vars,
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get_makefile_filename,
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get_python_version,
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)
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# This is better than
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# from sysconfig import _CONFIG_VARS as _config_vars
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# because it makes sure that the global dictionary is initialized
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# which might not be true in the time of import.
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_config_vars = get_config_vars()
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if os.name == "nt":
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from sysconfig import _fix_pcbuild
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warnings.warn(
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'The distutils.sysconfig module is deprecated, use sysconfig instead',
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DeprecationWarning,
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stacklevel=2
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)
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# Following functions are the same as in sysconfig but with different API
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def parse_config_h(fp, g=None):
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return sysconfig_parse_config_h(fp, vars=g)
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def parse_makefile(fn, g=None):
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return sysconfig_parse_makefile(fn, vars=g, keep_unresolved=False)
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_python_build = partial(is_python_build, check_home=True)
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_init_posix = partial(sysconfig_init_posix, _config_vars)
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_init_nt = partial(_init_non_posix, _config_vars)
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# Following functions are deprecated together with this module and they
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# have no direct replacement
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# Calculate the build qualifier flags if they are defined. Adding the flags
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# to the include and lib directories only makes sense for an installation, not
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# an in-source build.
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build_flags = ''
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try:
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if not python_build:
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build_flags = sys.abiflags
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except AttributeError:
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# It's not a configure-based build, so the sys module doesn't have
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# this attribute, which is fine.
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pass
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def customize_compiler(compiler):
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"""Do any platform-specific customization of a CCompiler instance.
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Mainly needed on Unix, so we can plug in the information that
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varies across Unices and is stored in Python's Makefile.
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"""
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if compiler.compiler_type == "unix":
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if sys.platform == "darwin":
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# Perform first-time customization of compiler-related
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# config vars on OS X now that we know we need a compiler.
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# This is primarily to support Pythons from binary
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# installers. The kind and paths to build tools on
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# the user system may vary significantly from the system
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# that Python itself was built on. Also the user OS
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# version and build tools may not support the same set
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# of CPU architectures for universal builds.
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if not _config_vars.get('CUSTOMIZED_OSX_COMPILER'):
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import _osx_support
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_osx_support.customize_compiler(_config_vars)
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_config_vars['CUSTOMIZED_OSX_COMPILER'] = 'True'
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(cc, cxx, cflags, ccshared, ldshared, shlib_suffix, ar, ar_flags) = \
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get_config_vars('CC', 'CXX', 'CFLAGS',
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'CCSHARED', 'LDSHARED', 'SHLIB_SUFFIX', 'AR', 'ARFLAGS')
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if 'CC' in os.environ:
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newcc = os.environ['CC']
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if (sys.platform == 'darwin'
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and 'LDSHARED' not in os.environ
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and ldshared.startswith(cc)):
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# On OS X, if CC is overridden, use that as the default
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# command for LDSHARED as well
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ldshared = newcc + ldshared[len(cc):]
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cc = newcc
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if 'CXX' in os.environ:
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cxx = os.environ['CXX']
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if 'LDSHARED' in os.environ:
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ldshared = os.environ['LDSHARED']
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if 'CPP' in os.environ:
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cpp = os.environ['CPP']
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else:
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cpp = cc + " -E" # not always
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if 'LDFLAGS' in os.environ:
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ldshared = ldshared + ' ' + os.environ['LDFLAGS']
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if 'CFLAGS' in os.environ:
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cflags = cflags + ' ' + os.environ['CFLAGS']
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ldshared = ldshared + ' ' + os.environ['CFLAGS']
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if 'CPPFLAGS' in os.environ:
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cpp = cpp + ' ' + os.environ['CPPFLAGS']
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cflags = cflags + ' ' + os.environ['CPPFLAGS']
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ldshared = ldshared + ' ' + os.environ['CPPFLAGS']
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if 'AR' in os.environ:
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ar = os.environ['AR']
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if 'ARFLAGS' in os.environ:
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archiver = ar + ' ' + os.environ['ARFLAGS']
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else:
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archiver = ar + ' ' + ar_flags
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cc_cmd = cc + ' ' + cflags
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compiler.set_executables(
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preprocessor=cpp,
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compiler=cc_cmd,
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compiler_so=cc_cmd + ' ' + ccshared,
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compiler_cxx=cxx,
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linker_so=ldshared,
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linker_exe=cc,
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archiver=archiver)
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compiler.shared_lib_extension = shlib_suffix
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def get_python_inc(plat_specific=0, prefix=None):
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"""Return the directory containing installed Python header files.
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If 'plat_specific' is false (the default), this is the path to the
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non-platform-specific header files, i.e. Python.h and so on;
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otherwise, this is the path to platform-specific header files
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(namely pyconfig.h).
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If 'prefix' is supplied, use it instead of sys.base_prefix or
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sys.base_exec_prefix -- i.e., ignore 'plat_specific'.
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"""
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if prefix is None:
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prefix = plat_specific and BASE_EXEC_PREFIX or BASE_PREFIX
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if os.name == "posix":
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if python_build:
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# Assume the executable is in the build directory. The
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# pyconfig.h file should be in the same directory. Since
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# the build directory may not be the source directory, we
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# must use "srcdir" from the makefile to find the "Include"
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# directory.
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if plat_specific:
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return _sys_home or project_base
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else:
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incdir = os.path.join(get_config_var('srcdir'), 'Include')
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return os.path.normpath(incdir)
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python_dir = 'python' + get_python_version() + build_flags
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return os.path.join(prefix, "include", python_dir)
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elif os.name == "nt":
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if python_build:
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# Include both the include and PC dir to ensure we can find
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# pyconfig.h
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return (os.path.join(prefix, "include") + os.path.pathsep +
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os.path.join(prefix, "PC"))
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return os.path.join(prefix, "include")
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else:
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raise DistutilsPlatformError(
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"I don't know where Python installs its C header files "
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"on platform '%s'" % os.name)
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def get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
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"""Return the directory containing the Python library (standard or
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site additions).
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If 'plat_specific' is true, return the directory containing
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platform-specific modules, i.e. any module from a non-pure-Python
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module distribution; otherwise, return the platform-shared library
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directory. If 'standard_lib' is true, return the directory
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containing standard Python library modules; otherwise, return the
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directory for site-specific modules.
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If 'prefix' is supplied, use it instead of sys.base_prefix or
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sys.base_exec_prefix -- i.e., ignore 'plat_specific'.
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"""
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if prefix is None:
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if standard_lib:
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prefix = plat_specific and BASE_EXEC_PREFIX or BASE_PREFIX
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else:
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prefix = plat_specific and EXEC_PREFIX or PREFIX
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if os.name == "posix":
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if plat_specific or standard_lib:
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# Platform-specific modules (any module from a non-pure-Python
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# module distribution) or standard Python library modules.
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libdir = sys.platlibdir
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else:
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# Pure Python
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libdir = "lib"
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libpython = os.path.join(prefix, libdir,
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"python" + get_python_version())
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if standard_lib:
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return libpython
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else:
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return os.path.join(libpython, "site-packages")
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elif os.name == "nt":
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if standard_lib:
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return os.path.join(prefix, "Lib")
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else:
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return os.path.join(prefix, "Lib", "site-packages")
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else:
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raise DistutilsPlatformError(
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"I don't know where Python installs its library "
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"on platform '%s'" % os.name)
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