[mirror_edk2.git] / AppPkg / Applications / Python / Python-2.7.2 / Lib / distutils / command / build_ext.py

"""distutils.command.build_ext\r
\r
Implements the Distutils 'build_ext' command, for building extension\r
modules (currently limited to C extensions, should accommodate C++\r
extensions ASAP)."""\r
\r
# This module should be kept compatible with Python 2.1.\r
\r
__revision__ = "$Id$"\r
\r
import sys, os, string, re\r
from types import *\r
from site import USER_BASE, USER_SITE\r
from distutils.core import Command\r
from distutils.errors import *\r
from distutils.sysconfig import customize_compiler, get_python_version\r
from distutils.dep_util import newer_group\r
from distutils.extension import Extension\r
from distutils.util import get_platform\r
from distutils import log\r
\r
if os.name == 'nt':\r
    from distutils.msvccompiler import get_build_version\r
    MSVC_VERSION = int(get_build_version())\r
\r
# An extension name is just a dot-separated list of Python NAMEs (ie.\r
# the same as a fully-qualified module name).\r
extension_name_re = re.compile \\r
    (r'^[a-zA-Z_][a-zA-Z_0-9]*(\.[a-zA-Z_][a-zA-Z_0-9]*)*$')\r
\r
\r
def show_compilers ():\r
    from distutils.ccompiler import show_compilers\r
    show_compilers()\r
\r
\r
class build_ext (Command):\r
\r
    description = "build C/C++ extensions (compile/link to build directory)"\r
\r
    # XXX thoughts on how to deal with complex command-line options like\r
    # these, i.e. how to make it so fancy_getopt can suck them off the\r
    # command line and make it look like setup.py defined the appropriate\r
    # lists of tuples of what-have-you.\r
    #   - each command needs a callback to process its command-line options\r
    #   - Command.__init__() needs access to its share of the whole\r
    #     command line (must ultimately come from\r
    #     Distribution.parse_command_line())\r
    #   - it then calls the current command class' option-parsing\r
    #     callback to deal with weird options like -D, which have to\r
    #     parse the option text and churn out some custom data\r
    #     structure\r
    #   - that data structure (in this case, a list of 2-tuples)\r
    #     will then be present in the command object by the time\r
    #     we get to finalize_options() (i.e. the constructor\r
    #     takes care of both command-line and client options\r
    #     in between initialize_options() and finalize_options())\r
\r
    sep_by = " (separated by '%s')" % os.pathsep\r
    user_options = [\r
        ('build-lib=', 'b',\r
         "directory for compiled extension modules"),\r
        ('build-temp=', 't',\r
         "directory for temporary files (build by-products)"),\r
        ('plat-name=', 'p',\r
         "platform name to cross-compile for, if supported "\r
         "(default: %s)" % get_platform()),\r
        ('inplace', 'i',\r
         "ignore build-lib and put compiled extensions into the source " +\r
         "directory alongside your pure Python modules"),\r
        ('include-dirs=', 'I',\r
         "list of directories to search for header files" + sep_by),\r
        ('define=', 'D',\r
         "C preprocessor macros to define"),\r
        ('undef=', 'U',\r
         "C preprocessor macros to undefine"),\r
        ('libraries=', 'l',\r
         "external C libraries to link with"),\r
        ('library-dirs=', 'L',\r
         "directories to search for external C libraries" + sep_by),\r
        ('rpath=', 'R',\r
         "directories to search for shared C libraries at runtime"),\r
        ('link-objects=', 'O',\r
         "extra explicit link objects to include in the link"),\r
        ('debug', 'g',\r
         "compile/link with debugging information"),\r
        ('force', 'f',\r
         "forcibly build everything (ignore file timestamps)"),\r
        ('compiler=', 'c',\r
         "specify the compiler type"),\r
        ('swig-cpp', None,\r
         "make SWIG create C++ files (default is C)"),\r
        ('swig-opts=', None,\r
         "list of SWIG command line options"),\r
        ('swig=', None,\r
         "path to the SWIG executable"),\r
        ('user', None,\r
         "add user include, library and rpath"),\r
        ]\r
\r
    boolean_options = ['inplace', 'debug', 'force', 'swig-cpp', 'user']\r
\r
    help_options = [\r
        ('help-compiler', None,\r
         "list available compilers", show_compilers),\r
        ]\r
\r
    def initialize_options (self):\r
        self.extensions = None\r
        self.build_lib = None\r
        self.plat_name = None\r
        self.build_temp = None\r
        self.inplace = 0\r
        self.package = None\r
\r
        self.include_dirs = None\r
        self.define = None\r
        self.undef = None\r
        self.libraries = None\r
        self.library_dirs = None\r
        self.rpath = None\r
        self.link_objects = None\r
        self.debug = None\r
        self.force = None\r
        self.compiler = None\r
        self.swig = None\r
        self.swig_cpp = None\r
        self.swig_opts = None\r
        self.user = None\r
\r
    def finalize_options(self):\r
        from distutils import sysconfig\r
\r
        self.set_undefined_options('build',\r
                                   ('build_lib', 'build_lib'),\r
                                   ('build_temp', 'build_temp'),\r
                                   ('compiler', 'compiler'),\r
                                   ('debug', 'debug'),\r
                                   ('force', 'force'),\r
                                   ('plat_name', 'plat_name'),\r
                                   )\r
\r
        if self.package is None:\r
            self.package = self.distribution.ext_package\r
\r
        self.extensions = self.distribution.ext_modules\r
\r
        # Make sure Python's include directories (for Python.h, pyconfig.h,\r
        # etc.) are in the include search path.\r
        py_include = sysconfig.get_python_inc()\r
        plat_py_include = sysconfig.get_python_inc(plat_specific=1)\r
        if self.include_dirs is None:\r
            self.include_dirs = self.distribution.include_dirs or []\r
        if isinstance(self.include_dirs, str):\r
            self.include_dirs = self.include_dirs.split(os.pathsep)\r
\r
        # Put the Python "system" include dir at the end, so that\r
        # any local include dirs take precedence.\r
        self.include_dirs.append(py_include)\r
        if plat_py_include != py_include:\r
            self.include_dirs.append(plat_py_include)\r
\r
        if isinstance(self.libraries, str):\r
            self.libraries = [self.libraries]\r
\r
        # Life is easier if we're not forever checking for None, so\r
        # simplify these options to empty lists if unset\r
        if self.libraries is None:\r
            self.libraries = []\r
        if self.library_dirs is None:\r
            self.library_dirs = []\r
        elif type(self.library_dirs) is StringType:\r
            self.library_dirs = string.split(self.library_dirs, os.pathsep)\r
\r
        if self.rpath is None:\r
            self.rpath = []\r
        elif type(self.rpath) is StringType:\r
            self.rpath = string.split(self.rpath, os.pathsep)\r
\r
        # for extensions under windows use different directories\r
        # for Release and Debug builds.\r
        # also Python's library directory must be appended to library_dirs\r
        if os.name == 'nt':\r
            # the 'libs' directory is for binary installs - we assume that\r
            # must be the *native* platform.  But we don't really support\r
            # cross-compiling via a binary install anyway, so we let it go.\r
            self.library_dirs.append(os.path.join(sys.exec_prefix, 'libs'))\r
            if self.debug:\r
                self.build_temp = os.path.join(self.build_temp, "Debug")\r
            else:\r
                self.build_temp = os.path.join(self.build_temp, "Release")\r
\r
            # Append the source distribution include and library directories,\r
            # this allows distutils on windows to work in the source tree\r
            self.include_dirs.append(os.path.join(sys.exec_prefix, 'PC'))\r
            if MSVC_VERSION == 9:\r
                # Use the .lib files for the correct architecture\r
                if self.plat_name == 'win32':\r
                    suffix = ''\r
                else:\r
                    # win-amd64 or win-ia64\r
                    suffix = self.plat_name[4:]\r
                new_lib = os.path.join(sys.exec_prefix, 'PCbuild')\r
                if suffix:\r
                    new_lib = os.path.join(new_lib, suffix)\r
                self.library_dirs.append(new_lib)\r
\r
            elif MSVC_VERSION == 8:\r
                self.library_dirs.append(os.path.join(sys.exec_prefix,\r
                                         'PC', 'VS8.0'))\r
            elif MSVC_VERSION == 7:\r
                self.library_dirs.append(os.path.join(sys.exec_prefix,\r
                                         'PC', 'VS7.1'))\r
            else:\r
                self.library_dirs.append(os.path.join(sys.exec_prefix,\r
                                         'PC', 'VC6'))\r
\r
        # OS/2 (EMX) doesn't support Debug vs Release builds, but has the\r
        # import libraries in its "Config" subdirectory\r
        if os.name == 'os2':\r
            self.library_dirs.append(os.path.join(sys.exec_prefix, 'Config'))\r
\r
        # for extensions under Cygwin and AtheOS Python's library directory must be\r
        # appended to library_dirs\r
        if sys.platform[:6] == 'cygwin' or sys.platform[:6] == 'atheos':\r
            if sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")):\r
                # building third party extensions\r
                self.library_dirs.append(os.path.join(sys.prefix, "lib",\r
                                                      "python" + get_python_version(),\r
                                                      "config"))\r
            else:\r
                # building python standard extensions\r
                self.library_dirs.append('.')\r
\r
        # for extensions under Linux or Solaris with a shared Python library,\r
        # Python's library directory must be appended to library_dirs\r
        sysconfig.get_config_var('Py_ENABLE_SHARED')\r
        if ((sys.platform.startswith('linux') or sys.platform.startswith('gnu')\r
             or sys.platform.startswith('sunos'))\r
            and sysconfig.get_config_var('Py_ENABLE_SHARED')):\r
            if sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")):\r
                # building third party extensions\r
                self.library_dirs.append(sysconfig.get_config_var('LIBDIR'))\r
            else:\r
                # building python standard extensions\r
                self.library_dirs.append('.')\r
\r
        # The argument parsing will result in self.define being a string, but\r
        # it has to be a list of 2-tuples.  All the preprocessor symbols\r
        # specified by the 'define' option will be set to '1'.  Multiple\r
        # symbols can be separated with commas.\r
\r
        if self.define:\r
            defines = self.define.split(',')\r
            self.define = map(lambda symbol: (symbol, '1'), defines)\r
\r
        # The option for macros to undefine is also a string from the\r
        # option parsing, but has to be a list.  Multiple symbols can also\r
        # be separated with commas here.\r
        if self.undef:\r
            self.undef = self.undef.split(',')\r
\r
        if self.swig_opts is None:\r
            self.swig_opts = []\r
        else:\r
            self.swig_opts = self.swig_opts.split(' ')\r
\r
        # Finally add the user include and library directories if requested\r
        if self.user:\r
            user_include = os.path.join(USER_BASE, "include")\r
            user_lib = os.path.join(USER_BASE, "lib")\r
            if os.path.isdir(user_include):\r
                self.include_dirs.append(user_include)\r
            if os.path.isdir(user_lib):\r
                self.library_dirs.append(user_lib)\r
                self.rpath.append(user_lib)\r
\r
    def run(self):\r
        from distutils.ccompiler import new_compiler\r
\r
        # 'self.extensions', as supplied by setup.py, is a list of\r
        # Extension instances.  See the documentation for Extension (in\r
        # distutils.extension) for details.\r
        #\r
        # For backwards compatibility with Distutils 0.8.2 and earlier, we\r
        # also allow the 'extensions' list to be a list of tuples:\r
        #    (ext_name, build_info)\r
        # where build_info is a dictionary containing everything that\r
        # Extension instances do except the name, with a few things being\r
        # differently named.  We convert these 2-tuples to Extension\r
        # instances as needed.\r
\r
        if not self.extensions:\r
            return\r
\r
        # If we were asked to build any C/C++ libraries, make sure that the\r
        # directory where we put them is in the library search path for\r
        # linking extensions.\r
        if self.distribution.has_c_libraries():\r
            build_clib = self.get_finalized_command('build_clib')\r
            self.libraries.extend(build_clib.get_library_names() or [])\r
            self.library_dirs.append(build_clib.build_clib)\r
\r
        # Setup the CCompiler object that we'll use to do all the\r
        # compiling and linking\r
        self.compiler = new_compiler(compiler=self.compiler,\r
                                     verbose=self.verbose,\r
                                     dry_run=self.dry_run,\r
                                     force=self.force)\r
        customize_compiler(self.compiler)\r
        # If we are cross-compiling, init the compiler now (if we are not\r
        # cross-compiling, init would not hurt, but people may rely on\r
        # late initialization of compiler even if they shouldn't...)\r
        if os.name == 'nt' and self.plat_name != get_platform():\r
            self.compiler.initialize(self.plat_name)\r
\r
        # And make sure that any compile/link-related options (which might\r
        # come from the command-line or from the setup script) are set in\r
        # that CCompiler object -- that way, they automatically apply to\r
        # all compiling and linking done here.\r
        if self.include_dirs is not None:\r
            self.compiler.set_include_dirs(self.include_dirs)\r
        if self.define is not None:\r
            # 'define' option is a list of (name,value) tuples\r
            for (name, value) in self.define:\r
                self.compiler.define_macro(name, value)\r
        if self.undef is not None:\r
            for macro in self.undef:\r
                self.compiler.undefine_macro(macro)\r
        if self.libraries is not None:\r
            self.compiler.set_libraries(self.libraries)\r
        if self.library_dirs is not None:\r
            self.compiler.set_library_dirs(self.library_dirs)\r
        if self.rpath is not None:\r
            self.compiler.set_runtime_library_dirs(self.rpath)\r
        if self.link_objects is not None:\r
            self.compiler.set_link_objects(self.link_objects)\r
\r
        # Now actually compile and link everything.\r
        self.build_extensions()\r
\r
    def check_extensions_list(self, extensions):\r
        """Ensure that the list of extensions (presumably provided as a\r
        command option 'extensions') is valid, i.e. it is a list of\r
        Extension objects.  We also support the old-style list of 2-tuples,\r
        where the tuples are (ext_name, build_info), which are converted to\r
        Extension instances here.\r
\r
        Raise DistutilsSetupError if the structure is invalid anywhere;\r
        just returns otherwise.\r
        """\r
        if not isinstance(extensions, list):\r
            raise DistutilsSetupError, \\r
                  "'ext_modules' option must be a list of Extension instances"\r
\r
        for i, ext in enumerate(extensions):\r
            if isinstance(ext, Extension):\r
                continue                # OK! (assume type-checking done\r
                                        # by Extension constructor)\r
\r
            if not isinstance(ext, tuple) or len(ext) != 2:\r
                raise DistutilsSetupError, \\r
                      ("each element of 'ext_modules' option must be an "\r
                       "Extension instance or 2-tuple")\r
\r
            ext_name, build_info = ext\r
\r
            log.warn(("old-style (ext_name, build_info) tuple found in "\r
                      "ext_modules for extension '%s'"\r
                      "-- please convert to Extension instance" % ext_name))\r
\r
            if not (isinstance(ext_name, str) and\r
                    extension_name_re.match(ext_name)):\r
                raise DistutilsSetupError, \\r
                      ("first element of each tuple in 'ext_modules' "\r
                       "must be the extension name (a string)")\r
\r
            if not isinstance(build_info, dict):\r
                raise DistutilsSetupError, \\r
                      ("second element of each tuple in 'ext_modules' "\r
                       "must be a dictionary (build info)")\r
\r
            # OK, the (ext_name, build_info) dict is type-safe: convert it\r
            # to an Extension instance.\r
            ext = Extension(ext_name, build_info['sources'])\r
\r
            # Easy stuff: one-to-one mapping from dict elements to\r
            # instance attributes.\r
            for key in ('include_dirs', 'library_dirs', 'libraries',\r
                        'extra_objects', 'extra_compile_args',\r
                        'extra_link_args'):\r
                val = build_info.get(key)\r
                if val is not None:\r
                    setattr(ext, key, val)\r
\r
            # Medium-easy stuff: same syntax/semantics, different names.\r
            ext.runtime_library_dirs = build_info.get('rpath')\r
            if 'def_file' in build_info:\r
                log.warn("'def_file' element of build info dict "\r
                         "no longer supported")\r
\r
            # Non-trivial stuff: 'macros' split into 'define_macros'\r
            # and 'undef_macros'.\r
            macros = build_info.get('macros')\r
            if macros:\r
                ext.define_macros = []\r
                ext.undef_macros = []\r
                for macro in macros:\r
                    if not (isinstance(macro, tuple) and len(macro) in (1, 2)):\r
                        raise DistutilsSetupError, \\r
                              ("'macros' element of build info dict "\r
                               "must be 1- or 2-tuple")\r
                    if len(macro) == 1:\r
                        ext.undef_macros.append(macro[0])\r
                    elif len(macro) == 2:\r
                        ext.define_macros.append(macro)\r
\r
            extensions[i] = ext\r
\r
    def get_source_files(self):\r
        self.check_extensions_list(self.extensions)\r
        filenames = []\r
\r
        # Wouldn't it be neat if we knew the names of header files too...\r
        for ext in self.extensions:\r
            filenames.extend(ext.sources)\r
\r
        return filenames\r
\r
    def get_outputs(self):\r
        # Sanity check the 'extensions' list -- can't assume this is being\r
        # done in the same run as a 'build_extensions()' call (in fact, we\r
        # can probably assume that it *isn't*!).\r
        self.check_extensions_list(self.extensions)\r
\r
        # And build the list of output (built) filenames.  Note that this\r
        # ignores the 'inplace' flag, and assumes everything goes in the\r
        # "build" tree.\r
        outputs = []\r
        for ext in self.extensions:\r
            outputs.append(self.get_ext_fullpath(ext.name))\r
        return outputs\r
\r
    def build_extensions(self):\r
        # First, sanity-check the 'extensions' list\r
        self.check_extensions_list(self.extensions)\r
\r
        for ext in self.extensions:\r
            self.build_extension(ext)\r
\r
    def build_extension(self, ext):\r
        sources = ext.sources\r
        if sources is None or type(sources) not in (ListType, TupleType):\r
            raise DistutilsSetupError, \\r
                  ("in 'ext_modules' option (extension '%s'), " +\r
                   "'sources' must be present and must be " +\r
                   "a list of source filenames") % ext.name\r
        sources = list(sources)\r
\r
        ext_path = self.get_ext_fullpath(ext.name)\r
        depends = sources + ext.depends\r
        if not (self.force or newer_group(depends, ext_path, 'newer')):\r
            log.debug("skipping '%s' extension (up-to-date)", ext.name)\r
            return\r
        else:\r
            log.info("building '%s' extension", ext.name)\r
\r
        # First, scan the sources for SWIG definition files (.i), run\r
        # SWIG on 'em to create .c files, and modify the sources list\r
        # accordingly.\r
        sources = self.swig_sources(sources, ext)\r
\r
        # Next, compile the source code to object files.\r
\r
        # XXX not honouring 'define_macros' or 'undef_macros' -- the\r
        # CCompiler API needs to change to accommodate this, and I\r
        # want to do one thing at a time!\r
\r
        # Two possible sources for extra compiler arguments:\r
        #   - 'extra_compile_args' in Extension object\r
        #   - CFLAGS environment variable (not particularly\r
        #     elegant, but people seem to expect it and I\r
        #     guess it's useful)\r
        # The environment variable should take precedence, and\r
        # any sensible compiler will give precedence to later\r
        # command line args.  Hence we combine them in order:\r
        extra_args = ext.extra_compile_args or []\r
\r
        macros = ext.define_macros[:]\r
        for undef in ext.undef_macros:\r
            macros.append((undef,))\r
\r
        objects = self.compiler.compile(sources,\r
                                         output_dir=self.build_temp,\r
                                         macros=macros,\r
                                         include_dirs=ext.include_dirs,\r
                                         debug=self.debug,\r
                                         extra_postargs=extra_args,\r
                                         depends=ext.depends)\r
\r
        # XXX -- this is a Vile HACK!\r
        #\r
        # The setup.py script for Python on Unix needs to be able to\r
        # get this list so it can perform all the clean up needed to\r
        # avoid keeping object files around when cleaning out a failed\r
        # build of an extension module.  Since Distutils does not\r
        # track dependencies, we have to get rid of intermediates to\r
        # ensure all the intermediates will be properly re-built.\r
        #\r
        self._built_objects = objects[:]\r
\r
        # Now link the object files together into a "shared object" --\r
        # of course, first we have to figure out all the other things\r
        # that go into the mix.\r
        if ext.extra_objects:\r
            objects.extend(ext.extra_objects)\r
        extra_args = ext.extra_link_args or []\r
\r
        # Detect target language, if not provided\r
        language = ext.language or self.compiler.detect_language(sources)\r
\r
        self.compiler.link_shared_object(\r
            objects, ext_path,\r
            libraries=self.get_libraries(ext),\r
            library_dirs=ext.library_dirs,\r
            runtime_library_dirs=ext.runtime_library_dirs,\r
            extra_postargs=extra_args,\r
            export_symbols=self.get_export_symbols(ext),\r
            debug=self.debug,\r
            build_temp=self.build_temp,\r
            target_lang=language)\r
\r
\r
    def swig_sources (self, sources, extension):\r
\r
        """Walk the list of source files in 'sources', looking for SWIG\r
        interface (.i) files.  Run SWIG on all that are found, and\r
        return a modified 'sources' list with SWIG source files replaced\r
        by the generated C (or C++) files.\r
        """\r
\r
        new_sources = []\r
        swig_sources = []\r
        swig_targets = {}\r
\r
        # XXX this drops generated C/C++ files into the source tree, which\r
        # is fine for developers who want to distribute the generated\r
        # source -- but there should be an option to put SWIG output in\r
        # the temp dir.\r
\r
        if self.swig_cpp:\r
            log.warn("--swig-cpp is deprecated - use --swig-opts=-c++")\r
\r
        if self.swig_cpp or ('-c++' in self.swig_opts) or \\r
           ('-c++' in extension.swig_opts):\r
            target_ext = '.cpp'\r
        else:\r
            target_ext = '.c'\r
\r
        for source in sources:\r
            (base, ext) = os.path.splitext(source)\r
            if ext == ".i":             # SWIG interface file\r
                new_sources.append(base + '_wrap' + target_ext)\r
                swig_sources.append(source)\r
                swig_targets[source] = new_sources[-1]\r
            else:\r
                new_sources.append(source)\r
\r
        if not swig_sources:\r
            return new_sources\r
\r
        swig = self.swig or self.find_swig()\r
        swig_cmd = [swig, "-python"]\r
        swig_cmd.extend(self.swig_opts)\r
        if self.swig_cpp:\r
            swig_cmd.append("-c++")\r
\r
        # Do not override commandline arguments\r
        if not self.swig_opts:\r
            for o in extension.swig_opts:\r
                swig_cmd.append(o)\r
\r
        for source in swig_sources:\r
            target = swig_targets[source]\r
            log.info("swigging %s to %s", source, target)\r
            self.spawn(swig_cmd + ["-o", target, source])\r
\r
        return new_sources\r
\r
    # swig_sources ()\r
\r
    def find_swig (self):\r
        """Return the name of the SWIG executable.  On Unix, this is\r
        just "swig" -- it should be in the PATH.  Tries a bit harder on\r
        Windows.\r
        """\r
\r
        if os.name == "posix":\r
            return "swig"\r
        elif os.name == "nt":\r
\r
            # Look for SWIG in its standard installation directory on\r
            # Windows (or so I presume!).  If we find it there, great;\r
            # if not, act like Unix and assume it's in the PATH.\r
            for vers in ("1.3", "1.2", "1.1"):\r
                fn = os.path.join("c:\\swig%s" % vers, "swig.exe")\r
                if os.path.isfile(fn):\r
                    return fn\r
            else:\r
                return "swig.exe"\r
\r
        elif os.name == "os2":\r
            # assume swig available in the PATH.\r
            return "swig.exe"\r
\r
        else:\r
            raise DistutilsPlatformError, \\r
                  ("I don't know how to find (much less run) SWIG "\r
                   "on platform '%s'") % os.name\r
\r
    # find_swig ()\r
\r
    # -- Name generators -----------------------------------------------\r
    # (extension names, filenames, whatever)\r
    def get_ext_fullpath(self, ext_name):\r
        """Returns the path of the filename for a given extension.\r
\r
        The file is located in `build_lib` or directly in the package\r
        (inplace option).\r
        """\r
        # makes sure the extension name is only using dots\r
        all_dots = string.maketrans('/'+os.sep, '..')\r
        ext_name = ext_name.translate(all_dots)\r
\r
        fullname = self.get_ext_fullname(ext_name)\r
        modpath = fullname.split('.')\r
        filename = self.get_ext_filename(ext_name)\r
        filename = os.path.split(filename)[-1]\r
\r
        if not self.inplace:\r
            # no further work needed\r
            # returning :\r
            #   build_dir/package/path/filename\r
            filename = os.path.join(*modpath[:-1]+[filename])\r
            return os.path.join(self.build_lib, filename)\r
\r
        # the inplace option requires to find the package directory\r
        # using the build_py command for that\r
        package = '.'.join(modpath[0:-1])\r
        build_py = self.get_finalized_command('build_py')\r
        package_dir = os.path.abspath(build_py.get_package_dir(package))\r
\r
        # returning\r
        #   package_dir/filename\r
        return os.path.join(package_dir, filename)\r
\r
    def get_ext_fullname(self, ext_name):\r
        """Returns the fullname of a given extension name.\r
\r
        Adds the `package.` prefix"""\r
        if self.package is None:\r
            return ext_name\r
        else:\r
            return self.package + '.' + ext_name\r
\r
    def get_ext_filename(self, ext_name):\r
        r"""Convert the name of an extension (eg. "foo.bar") into the name\r
        of the file from which it will be loaded (eg. "foo/bar.so", or\r
        "foo\bar.pyd").\r
        """\r
        from distutils.sysconfig import get_config_var\r
        ext_path = string.split(ext_name, '.')\r
        # OS/2 has an 8 character module (extension) limit :-(\r
        if os.name == "os2":\r
            ext_path[len(ext_path) - 1] = ext_path[len(ext_path) - 1][:8]\r
        # extensions in debug_mode are named 'module_d.pyd' under windows\r
        so_ext = get_config_var('SO')\r
        if os.name == 'nt' and self.debug:\r
            return os.path.join(*ext_path) + '_d' + so_ext\r
        return os.path.join(*ext_path) + so_ext\r
\r
    def get_export_symbols (self, ext):\r
        """Return the list of symbols that a shared extension has to\r
        export.  This either uses 'ext.export_symbols' or, if it's not\r
        provided, "init" + module_name.  Only relevant on Windows, where\r
        the .pyd file (DLL) must export the module "init" function.\r
        """\r
        initfunc_name = "init" + ext.name.split('.')[-1]\r
        if initfunc_name not in ext.export_symbols:\r
            ext.export_symbols.append(initfunc_name)\r
        return ext.export_symbols\r
\r
    def get_libraries (self, ext):\r
        """Return the list of libraries to link against when building a\r
        shared extension.  On most platforms, this is just 'ext.libraries';\r
        on Windows and OS/2, we add the Python library (eg. python20.dll).\r
        """\r
        # The python library is always needed on Windows.  For MSVC, this\r
        # is redundant, since the library is mentioned in a pragma in\r
        # pyconfig.h that MSVC groks.  The other Windows compilers all seem\r
        # to need it mentioned explicitly, though, so that's what we do.\r
        # Append '_d' to the python import library on debug builds.\r
        if sys.platform == "win32":\r
            from distutils.msvccompiler import MSVCCompiler\r
            if not isinstance(self.compiler, MSVCCompiler):\r
                template = "python%d%d"\r
                if self.debug:\r
                    template = template + '_d'\r
                pythonlib = (template %\r
                       (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff))\r
                # don't extend ext.libraries, it may be shared with other\r
                # extensions, it is a reference to the original list\r
                return ext.libraries + [pythonlib]\r
            else:\r
                return ext.libraries\r
        elif sys.platform == "os2emx":\r
            # EMX/GCC requires the python library explicitly, and I\r
            # believe VACPP does as well (though not confirmed) - AIM Apr01\r
            template = "python%d%d"\r
            # debug versions of the main DLL aren't supported, at least\r
            # not at this time - AIM Apr01\r
            #if self.debug:\r
            #    template = template + '_d'\r
            pythonlib = (template %\r
                   (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff))\r
            # don't extend ext.libraries, it may be shared with other\r
            # extensions, it is a reference to the original list\r
            return ext.libraries + [pythonlib]\r
        elif sys.platform[:6] == "cygwin":\r
            template = "python%d.%d"\r
            pythonlib = (template %\r
                   (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff))\r
            # don't extend ext.libraries, it may be shared with other\r
            # extensions, it is a reference to the original list\r
            return ext.libraries + [pythonlib]\r
        elif sys.platform[:6] == "atheos":\r
            from distutils import sysconfig\r
\r
            template = "python%d.%d"\r
            pythonlib = (template %\r
                   (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff))\r
            # Get SHLIBS from Makefile\r
            extra = []\r
            for lib in sysconfig.get_config_var('SHLIBS').split():\r
                if lib.startswith('-l'):\r
                    extra.append(lib[2:])\r
                else:\r
                    extra.append(lib)\r
            # don't extend ext.libraries, it may be shared with other\r
            # extensions, it is a reference to the original list\r
            return ext.libraries + [pythonlib, "m"] + extra\r
\r
        elif sys.platform == 'darwin':\r
            # Don't use the default code below\r
            return ext.libraries\r
        elif sys.platform[:3] == 'aix':\r
            # Don't use the default code below\r
            return ext.libraries\r
        else:\r
            from distutils import sysconfig\r
            if sysconfig.get_config_var('Py_ENABLE_SHARED'):\r
                template = "python%d.%d"\r
                pythonlib = (template %\r
                             (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff))\r
                return ext.libraries + [pythonlib]\r
            else:\r
                return ext.libraries\r
\r
# class build_ext\r