Function customize_config_vars

Lib/_osx_support.py:439–477

Customize Python build configuration variables. Called internally from sysconfig with a mutable mapping containing name/value pairs parsed from the configured makefile used to build this interpreter. Returns the mapping updated as needed to reflect the environment in which the

(_config_vars)

def customize_config_vars(_config_vars):
    """Customize Python build configuration variables.

    Called internally from sysconfig with a mutable mapping
    containing name/value pairs parsed from the configured
    makefile used to build this interpreter.  Returns
    the mapping updated as needed to reflect the environment
    in which the interpreter is running; in the case of
    a Python from a binary installer, the installed
    environment may be very different from the build
    environment, i.e. different OS levels, different
    built tools, different available CPU architectures.

    This customization is performed whenever
    distutils.sysconfig.get_config_vars() is first
    called.  It may be used in environments where no
    compilers are present, i.e. when installing pure
    Python dists.  Customization of compiler paths
    and detection of unavailable archs is deferred
    until the first extension module build is
    requested (in distutils.sysconfig.customize_compiler).

    Currently called from distutils.sysconfig
    """

    if not _supports_universal_builds():
        # 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.
        _remove_universal_flags(_config_vars)

    # Allow user to override all archs with ARCHFLAGS env var
    _override_all_archs(_config_vars)

    # Remove references to sdks that are not found
    _check_for_unavailable_sdk(_config_vars)

    return _config_vars


def customize_compiler(_config_vars):