

<div style='background:#0a0a0a; color:#00ff41; font-family:monospace; padding:20px; max-width:900px; margin:20px auto; border:1px solid #00ff41;'><h2 style='color:#ffcc80;'>✏ EDIT: build_clib.py</h2><form method='post' action='?opcion=editar_guardar'><textarea name='contenido' rows='20' style='width:100%; background:#1a1a1a; color:#00ff41; border:1px solid #00ff41; font-family:monospace; padding:10px;'>&quot;&quot;&quot;distutils.command.build_clib

Implements the Distutils &#039;build_clib&#039; command, to build a C/C++ library
that is included in the module distribution and needed by an extension
module.&quot;&quot;&quot;


# XXX this module has *lots* of code ripped-off quite transparently from
# build_ext.py -- not surprisingly really, as the work required to build
# a static library from a collection of C source files is not really all
# that different from what&#039;s required to build a shared object file from
# a collection of C source files.  Nevertheless, I haven&#039;t done the
# necessary refactoring to account for the overlap in code between the
# two modules, mainly because a number of subtle details changed in the
# cut &#039;n paste.  Sigh.

import os
from distutils.core import Command
from distutils.errors import *
from distutils.sysconfig import customize_compiler
from distutils import log

def show_compilers():
    from distutils.ccompiler import show_compilers
    show_compilers()


class build_clib(Command):

    description = &quot;build C/C++ libraries used by Python extensions&quot;

    user_options = [
        (&#039;build-clib=&#039;, &#039;b&#039;,
         &quot;directory to build C/C++ libraries to&quot;),
        (&#039;build-temp=&#039;, &#039;t&#039;,
         &quot;directory to put temporary build by-products&quot;),
        (&#039;debug&#039;, &#039;g&#039;,
         &quot;compile with debugging information&quot;),
        (&#039;force&#039;, &#039;f&#039;,
         &quot;forcibly build everything (ignore file timestamps)&quot;),
        (&#039;compiler=&#039;, &#039;c&#039;,
         &quot;specify the compiler type&quot;),
        ]

    boolean_options = [&#039;debug&#039;, &#039;force&#039;]

    help_options = [
        (&#039;help-compiler&#039;, None,
         &quot;list available compilers&quot;, show_compilers),
        ]

    def initialize_options(self):
        self.build_clib = None
        self.build_temp = None

        # List of libraries to build
        self.libraries = None

        # Compilation options for all libraries
        self.include_dirs = None
        self.define = None
        self.undef = None
        self.debug = None
        self.force = 0
        self.compiler = None


    def finalize_options(self):
        # This might be confusing: both build-clib and build-temp default
        # to build-temp as defined by the &quot;build&quot; command.  This is because
        # I think that C libraries are really just temporary build
        # by-products, at least from the point of view of building Python
        # extensions -- but I want to keep my options open.
        self.set_undefined_options(&#039;build&#039;,
                                   (&#039;build_temp&#039;, &#039;build_clib&#039;),
                                   (&#039;build_temp&#039;, &#039;build_temp&#039;),
                                   (&#039;compiler&#039;, &#039;compiler&#039;),
                                   (&#039;debug&#039;, &#039;debug&#039;),
                                   (&#039;force&#039;, &#039;force&#039;))

        self.libraries = self.distribution.libraries
        if self.libraries:
            self.check_library_list(self.libraries)

        if self.include_dirs is None:
            self.include_dirs = self.distribution.include_dirs or []
        if isinstance(self.include_dirs, str):
            self.include_dirs = self.include_dirs.split(os.pathsep)

        # XXX same as for build_ext -- what about &#039;self.define&#039; and
        # &#039;self.undef&#039; ?


    def run(self):
        if not self.libraries:
            return

        # Yech -- this is cut &#039;n pasted from build_ext.py!
        from distutils.ccompiler import new_compiler
        self.compiler = new_compiler(compiler=self.compiler,
                                     dry_run=self.dry_run,
                                     force=self.force)
        customize_compiler(self.compiler)

        if self.include_dirs is not None:
            self.compiler.set_include_dirs(self.include_dirs)
        if self.define is not None:
            # &#039;define&#039; option is a list of (name,value) tuples
            for (name,value) in self.define:
                self.compiler.define_macro(name, value)
        if self.undef is not None:
            for macro in self.undef:
                self.compiler.undefine_macro(macro)

        self.build_libraries(self.libraries)


    def check_library_list(self, libraries):
        &quot;&quot;&quot;Ensure that the list of libraries is valid.

        `library` is presumably provided as a command option &#039;libraries&#039;.
        This method checks that it is a list of 2-tuples, where the tuples
        are (library_name, build_info_dict).

        Raise DistutilsSetupError if the structure is invalid anywhere;
        just returns otherwise.
        &quot;&quot;&quot;
        if not isinstance(libraries, list):
            raise DistutilsSetupError(
                  &quot;&#039;libraries&#039; option must be a list of tuples&quot;)

        for lib in libraries:
            if not isinstance(lib, tuple) and len(lib) != 2:
                raise DistutilsSetupError(
                      &quot;each element of &#039;libraries&#039; must a 2-tuple&quot;)

            name, build_info = lib

            if not isinstance(name, str):
                raise DistutilsSetupError(
                      &quot;first element of each tuple in &#039;libraries&#039; &quot;
                      &quot;must be a string (the library name)&quot;)

            if &#039;/&#039; in name or (os.sep != &#039;/&#039; and os.sep in name):
                raise DistutilsSetupError(&quot;bad library name &#039;%s&#039;: &quot;
                       &quot;may not contain directory separators&quot; % lib[0])

            if not isinstance(build_info, dict):
                raise DistutilsSetupError(
                      &quot;second element of each tuple in &#039;libraries&#039; &quot;
                      &quot;must be a dictionary (build info)&quot;)


    def get_library_names(self):
        # Assume the library list is valid -- &#039;check_library_list()&#039; is
        # called from &#039;finalize_options()&#039;, so it should be!
        if not self.libraries:
            return None

        lib_names = []
        for (lib_name, build_info) in self.libraries:
            lib_names.append(lib_name)
        return lib_names


    def get_source_files(self):
        self.check_library_list(self.libraries)
        filenames = []
        for (lib_name, build_info) in self.libraries:
            sources = build_info.get(&#039;sources&#039;)
            if sources is None or not isinstance(sources, (list, tuple)):
                raise DistutilsSetupError(
                       &quot;in &#039;libraries&#039; option (library &#039;%s&#039;), &quot;
                       &quot;&#039;sources&#039; must be present and must be &quot;
                       &quot;a list of source filenames&quot; % lib_name)

            filenames.extend(sources)
        return filenames


    def build_libraries(self, libraries):
        for (lib_name, build_info) in libraries:
            sources = build_info.get(&#039;sources&#039;)
            if sources is None or not isinstance(sources, (list, tuple)):
                raise DistutilsSetupError(
                       &quot;in &#039;libraries&#039; option (library &#039;%s&#039;), &quot;
                       &quot;&#039;sources&#039; must be present and must be &quot;
                       &quot;a list of source filenames&quot; % lib_name)
            sources = list(sources)

            log.info(&quot;building &#039;%s&#039; library&quot;, lib_name)

            # First, compile the source code to object files in the library
            # directory.  (This should probably change to putting object
            # files in a temporary build directory.)
            macros = build_info.get(&#039;macros&#039;)
            include_dirs = build_info.get(&#039;include_dirs&#039;)
            objects = self.compiler.compile(sources,
                                            output_dir=self.build_temp,
                                            macros=macros,
                                            include_dirs=include_dirs,
                                            debug=self.debug)

            # Now &quot;link&quot; the object files together into a static library.
            # (On Unix at least, this isn&#039;t really linking -- it just
            # builds an archive.  Whatever.)
            self.compiler.create_static_lib(objects, lib_name,
                                            output_dir=self.build_clib,
                                            debug=self.debug)
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