114 lines
4.8 KiB
TeX
114 lines
4.8 KiB
TeX
\section{\module{distutils.sysconfig} ---
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System configuration information}
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\declaremodule{standard}{distutils.sysconfig}
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\modulesynopsis{Low-level access to configuration information of the
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Python interpreter.}
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\moduleauthor{Fred L. Drake, Jr.}{fdrake@acm.org}
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\moduleauthor{Greg Ward}{gward@python.net}
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\sectionauthor{Fred L. Drake, Jr.}{fdrake@acm.org}
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The \module{distutils.sysconfig} module provides access to Python's
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low-level configuration information. The specific configuration
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variables available depend heavily on the platform and configuration.
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The specific variables depend on the build process for the specific
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version of Python being run; the variables are those found in the
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\file{Makefile} and configuration header that are installed with
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Python on \UNIX{} systems. The configuration header is called
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\file{pyconfig.h} for Python versions starting with 2.2, and
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\file{config.h} for earlier versions of Python.
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Some additional functions are provided which perform some useful
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manipulations for other parts of the \module{distutils} package.
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\begin{datadesc}{PREFIX}
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The result of \code{os.path.normpath(sys.prefex)}.
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\end{datadesc}
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\begin{datadesc}{EXEC_PREFIX}
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The result of \code{os.path.normpath(sys.exec_prefex)}.
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\end{datadesc}
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\begin{funcdesc}{get_config_var}{name}
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Return the value of a single variable. This is equivalent to
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\code{get_config_vars().get(\var{name})}.
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\end{funcdesc}
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\begin{funcdesc}{get_config_vars}{\moreargs}
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Return a set of variable definitions. If there are no arguments,
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this returns a dictionary mapping names of configuration variables
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to values. If arguments are provided, they should be strings, and
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the return value will be a sequence giving the associated values.
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If a given name does not have a corresponding value, \code{None}
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will be included for that variable.
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\end{funcdesc}
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\begin{funcdesc}{get_config_h_filename}{}
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Return the full path name of the configuration header. For \UNIX,
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this will be the header generated by the \program{configure} script;
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for other platforms the header will have been supplied directly by
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the Python source distribution. The file is a platform-specific
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text file.
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\end{funcdesc}
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\begin{funcdesc}{get_makefile_filename}{}
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Return the full path name of the \file{Makefile} used to build
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Python. For \UNIX, this will be a file generated by the
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\program{configure} script; the meaning for other platforms will
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vary. The file is a platform-specific text file, if it exists.
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This function is only useful on \POSIX{} platforms.
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\end{funcdesc}
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\begin{funcdesc}{get_python_inc}{\optional{plat_specific\optional{, prefix}}}
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Return the directory for either the general or platform-dependent C
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include files. If \var{plat_specific} is true, the
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platform-dependent include directory is returned; if false or
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omitted, the platform-independent directory is returned. If
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\var{prefix} is given, it is used as either the prefix instead of
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\constant{PREFIX}, or as the exec-prefix instead of
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\constant{EXEC_PREFIX} if \var{plat_specific} is true.
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\end{funcdesc}
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\begin{funcdesc}{get_python_lib}{\optional{plat_specific\optional{,
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standard_lib\optional{, prefix}}}}
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Return the directory for either the general or platform-dependent
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library installation. If \var{plat_specific} is true, the
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platform-dependent include directory is returned; if false or
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omitted, the platform-independent directory is returned. If
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\var{prefix} is given, it is used as either the prefix instead of
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\constant{PREFIX}, or as the exec-prefix instead of
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\constant{EXEC_PREFIX} if \var{plat_specific} is true. If
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\var{standard_lib} is true, the directory for the standard library
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is returned rather than the directory for the installation of
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third-party extensions.
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\end{funcdesc}
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The following function is only intended for use within the
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\module{distutils} package.
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\begin{funcdesc}{customize_compiler}{compiler}
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Do any platform-specific customization of a
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\class{distutils.ccompiler.CCompiler} instance.
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This function is only needed on \UNIX{} at this time, but should be
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called consistently to support forward-compatibility. It inserts
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the information that varies across \UNIX{} flavors and is stored in
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Python's \file{Makefile}. This information includes the selected
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compiler, compiler and linker options, and the extension used by the
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linker for shared objects.
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\end{funcdesc}
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This function is even more special-purpose, and should only be used
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from Python's own build procedures.
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\begin{funcdesc}{set_python_build}{}
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Inform the \module{distutils.sysconfig} module that it is being used
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as part of the build process for Python. This changes a lot of
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relative locations for files, allowing them to be located in the
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build area rather than in an installed Python.
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\end{funcdesc}
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