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Python Compiled Bytecode | 2005-10-18 | 17KB | 476 lines

# Source Generated with Decompyle++
# File: in.pyc (Python 2.4)

"""distutils.command.build_ext

Implements the Distutils 'build_ext' command, for building extension
modules (currently limited to C extensions, should accommodate C++
extensions ASAP)."""
__revision__ = '$Id: build_ext.py,v 1.98 2004/11/10 22:23:15 loewis Exp $'
import sys
import os
import string
import re
from types import *
from distutils.core import Command
from distutils.errors import *
from distutils.sysconfig import customize_compiler, get_python_version
from distutils.dep_util import newer_group
from distutils.extension import Extension
from distutils import log
extension_name_re = re.compile('^[a-zA-Z_][a-zA-Z_0-9]*(\\.[a-zA-Z_][a-zA-Z_0-9]*)*$')

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


class build_ext(Command):
    description = 'build C/C++ extensions (compile/link to build directory)'
    sep_by = " (separated by '%s')" % os.pathsep
    user_options = [
        ('build-lib=', 'b', 'directory for compiled extension modules'),
        ('build-temp=', 't', 'directory for temporary files (build by-products)'),
        ('inplace', 'i', 'ignore build-lib and put compiled extensions into the source ' + 'directory alongside your pure Python modules'),
        ('include-dirs=', 'I', 'list of directories to search for header files' + sep_by),
        ('define=', 'D', 'C preprocessor macros to define'),
        ('undef=', 'U', 'C preprocessor macros to undefine'),
        ('libraries=', 'l', 'external C libraries to link with'),
        ('library-dirs=', 'L', 'directories to search for external C libraries' + sep_by),
        ('rpath=', 'R', 'directories to search for shared C libraries at runtime'),
        ('link-objects=', 'O', 'extra explicit link objects to include in the link'),
        ('debug', 'g', 'compile/link with debugging information'),
        ('force', 'f', 'forcibly build everything (ignore file timestamps)'),
        ('compiler=', 'c', 'specify the compiler type'),
        ('swig-cpp', None, 'make SWIG create C++ files (default is C)'),
        ('swig-opts=', None, 'list of SWIG command line options'),
        ('swig=', None, 'path to the SWIG executable')]
    boolean_options = [
        'inplace',
        'debug',
        'force',
        'swig-cpp']
    help_options = [
        ('help-compiler', None, 'list available compilers', show_compilers)]

    def initialize_options(self):
        self.extensions = None
        self.build_lib = None
        self.build_temp = None
        self.inplace = 0
        self.package = None
        self.include_dirs = None
        self.define = None
        self.undef = None
        self.libraries = None
        self.library_dirs = None
        self.rpath = None
        self.link_objects = None
        self.debug = None
        self.force = None
        self.compiler = None
        self.swig = None
        self.swig_cpp = None
        self.swig_opts = None


    def finalize_options(self):
        sysconfig = sysconfig
        import distutils
        self.set_undefined_options('build', ('build_lib', 'build_lib'), ('build_temp', 'build_temp'), ('compiler', 'compiler'), ('debug', 'debug'), ('force', 'force'))
        if self.package is None:
            self.package = self.distribution.ext_package

        self.extensions = self.distribution.ext_modules
        py_include = sysconfig.get_python_inc()
        plat_py_include = sysconfig.get_python_inc(plat_specific = 1)
        if self.include_dirs is None:
            if not self.distribution.include_dirs:
                pass
            self.include_dirs = []

        if type(self.include_dirs) is StringType:
            self.include_dirs = string.split(self.include_dirs, os.pathsep)

        self.include_dirs.append(py_include)
        if plat_py_include != py_include:
            self.include_dirs.append(plat_py_include)

        if type(self.libraries) is StringType:
            self.libraries = [
                self.libraries]

        if self.libraries is None:
            self.libraries = []

        if self.library_dirs is None:
            self.library_dirs = []
        elif type(self.library_dirs) is StringType:
            self.library_dirs = string.split(self.library_dirs, os.pathsep)

        if self.rpath is None:
            self.rpath = []
        elif type(self.rpath) is StringType:
            self.rpath = string.split(self.rpath, os.pathsep)

        if os.name == 'nt':
            self.library_dirs.append(os.path.join(sys.exec_prefix, 'libs'))
            if self.debug:
                self.build_temp = os.path.join(self.build_temp, 'Debug')
            else:
                self.build_temp = os.path.join(self.build_temp, 'Release')
            self.include_dirs.append(os.path.join(sys.exec_prefix, 'PC'))
            self.library_dirs.append(os.path.join(sys.exec_prefix, 'PCBuild'))

        if os.name == 'os2':
            self.library_dirs.append(os.path.join(sys.exec_prefix, 'Config'))

        if sys.platform[:6] == 'cygwin' or sys.platform[:6] == 'atheos':
            if string.find(sys.executable, sys.exec_prefix) != -1:
                self.library_dirs.append(os.path.join(sys.prefix, 'lib', 'python' + get_python_version(), 'config'))
            else:
                self.library_dirs.append('.')

        if self.define:
            defines = string.split(self.define, ',')
            self.define = map((lambda symbol: (symbol, '1')), defines)

        if self.undef:
            self.undef = string.split(self.undef, ',')

        if self.swig_opts is None:
            self.swig_opts = []
        else:
            self.swig_opts = self.swig_opts.split(' ')


    def run(self):
        new_compiler = new_compiler
        import distutils.ccompiler
        if not self.extensions:
            return None

        if self.distribution.has_c_libraries():
            build_clib = self.get_finalized_command('build_clib')
            if not build_clib.get_library_names():
                pass
            self.libraries.extend([])
            self.library_dirs.append(build_clib.build_clib)

        self.compiler = new_compiler(compiler = self.compiler, verbose = self.verbose, 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:
            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)


        if self.libraries is not None:
            self.compiler.set_libraries(self.libraries)

        if self.library_dirs is not None:
            self.compiler.set_library_dirs(self.library_dirs)

        if self.rpath is not None:
            self.compiler.set_runtime_library_dirs(self.rpath)

        if self.link_objects is not None:
            self.compiler.set_link_objects(self.link_objects)

        self.build_extensions()


    def check_extensions_list(self, extensions):
        """Ensure that the list of extensions (presumably provided as a
        command option 'extensions') is valid, i.e. it is a list of
        Extension objects.  We also support the old-style list of 2-tuples,
        where the tuples are (ext_name, build_info), which are converted to
        Extension instances here.

        Raise DistutilsSetupError if the structure is invalid anywhere;
        just returns otherwise.
        """
        if type(extensions) is not ListType:
            raise DistutilsSetupError, "'ext_modules' option must be a list of Extension instances"

        for i in range(len(extensions)):
            ext = extensions[i]
            if isinstance(ext, Extension):
                continue

            (ext_name, build_info) = ext
            log.warn("old-style (ext_name, build_info) tuple found in ext_modules for extension '%s'-- please convert to Extension instance" % ext_name)
            if type(ext) is not TupleType and len(ext) != 2:
                raise DistutilsSetupError, "each element of 'ext_modules' option must be an Extension instance or 2-tuple"

            if not type(ext_name) is StringType and extension_name_re.match(ext_name):
                raise DistutilsSetupError, "first element of each tuple in 'ext_modules' must be the extension name (a string)"

            if type(build_info) is not DictionaryType:
                raise DistutilsSetupError, "second element of each tuple in 'ext_modules' must be a dictionary (build info)"

            ext = Extension(ext_name, build_info['sources'])
            for key in ('include_dirs', 'library_dirs', 'libraries', 'extra_objects', 'extra_compile_args', 'extra_link_args'):
                val = build_info.get(key)
                if val is not None:
                    setattr(ext, key, val)
                    continue

            ext.runtime_library_dirs = build_info.get('rpath')
            if build_info.has_key('def_file'):
                log.warn("'def_file' element of build info dict no longer supported")

            macros = build_info.get('macros')
            if macros:
                ext.define_macros = []
                ext.undef_macros = []
                for macro in macros:
                    None if type(macro) is TupleType else 1
                    if len(macro) == 2:
                        ext.define_macros.append(macro)
                        continue


            extensions[i] = ext



    def get_source_files(self):
        self.check_extensions_list(self.extensions)
        filenames = []
        for ext in self.extensions:
            filenames.extend(ext.sources)

        return filenames


    def get_outputs(self):
        self.check_extensions_list(self.extensions)
        outputs = []
        for ext in self.extensions:
            fullname = self.get_ext_fullname(ext.name)
            outputs.append(os.path.join(self.build_lib, self.get_ext_filename(fullname)))

        return outputs


    def build_extensions(self):
        self.check_extensions_list(self.extensions)
        for ext in self.extensions:
            self.build_extension(ext)



    def build_extension(self, ext):
        sources = ext.sources
        if sources is None or type(sources) not in (ListType, TupleType):
            raise DistutilsSetupError, ("in 'ext_modules' option (extension '%s'), " + "'sources' must be present and must be " + 'a list of source filenames') % ext.name

        sources = list(sources)
        fullname = self.get_ext_fullname(ext.name)
        if self.inplace:
            modpath = string.split(fullname, '.')
            package = string.join(modpath[0:-1], '.')
            base = modpath[-1]
            build_py = self.get_finalized_command('build_py')
            package_dir = build_py.get_package_dir(package)
            ext_filename = os.path.join(package_dir, self.get_ext_filename(base))
        else:
            ext_filename = os.path.join(self.build_lib, self.get_ext_filename(fullname))
        depends = sources + ext.depends
        if not self.force or newer_group(depends, ext_filename, 'newer'):
            log.debug("skipping '%s' extension (up-to-date)", ext.name)
            return None
        else:
            log.info("building '%s' extension", ext.name)
        sources = self.swig_sources(sources, ext)
        if not ext.extra_compile_args:
            pass
        extra_args = []
        macros = ext.define_macros[:]
        for undef in ext.undef_macros:
            macros.append((undef,))

        objects = self.compiler.compile(sources, output_dir = self.build_temp, macros = macros, include_dirs = ext.include_dirs, debug = self.debug, extra_postargs = extra_args, depends = ext.depends)
        self._built_objects = objects[:]
        if ext.extra_objects:
            objects.extend(ext.extra_objects)

        if not ext.extra_link_args:
            pass
        extra_args = []
        if not ext.language:
            pass
        language = self.compiler.detect_language(sources)
        self.compiler.link_shared_object(objects, ext_filename, libraries = self.get_libraries(ext), library_dirs = ext.library_dirs, runtime_library_dirs = ext.runtime_library_dirs, extra_postargs = extra_args, export_symbols = self.get_export_symbols(ext), debug = self.debug, build_temp = self.build_temp, target_lang = language)


    def swig_sources(self, sources, extension):
        """Walk the list of source files in 'sources', looking for SWIG
        interface (.i) files.  Run SWIG on all that are found, and
        return a modified 'sources' list with SWIG source files replaced
        by the generated C (or C++) files.
        """
        new_sources = []
        swig_sources = []
        swig_targets = { }
        if self.swig_cpp:
            log.warn('--swig-cpp is deprecated - use --swig-opts=-c++')

        if self.swig_cpp or '-c++' in self.swig_opts:
            target_ext = '.cpp'
        else:
            target_ext = '.c'
        for source in sources:
            (base, ext) = os.path.splitext(source)
            if ext == '.i':
                new_sources.append(base + '_wrap' + target_ext)
                swig_sources.append(source)
                swig_targets[source] = new_sources[-1]
                continue
            new_sources.append(source)

        if not swig_sources:
            return new_sources

        if not self.swig:
            pass
        swig = self.find_swig()
        swig_cmd = [
            swig,
            '-python']
        swig_cmd.extend(self.swig_opts)
        if self.swig_cpp:
            swig_cmd.append('-c++')

        if not self.swig_opts:
            for o in extension.swig_opts:
                swig_cmd.append(o)


        for source in swig_sources:
            target = swig_targets[source]
            log.info('swigging %s to %s', source, target)
            self.spawn(swig_cmd + [
                '-o',
                target,
                source])

        return new_sources


    def find_swig(self):
        '''Return the name of the SWIG executable.  On Unix, this is
        just "swig" -- it should be in the PATH.  Tries a bit harder on
        Windows.
        '''
        if os.name == 'posix':
            return 'swig'
        elif os.name == 'nt':
            for vers in ('1.3', '1.2', '1.1'):
                fn = os.path.join('c:\\swig%s' % vers, 'swig.exe')
                if os.path.isfile(fn):
                    return fn
                    continue
            else:
                return 'swig.exe'
        elif os.name == 'os2':
            return 'swig.exe'
        else:
            raise DistutilsPlatformError, "I don't know how to find (much less run) SWIG on platform '%s'" % os.name


    def get_ext_fullname(self, ext_name):
        if self.package is None:
            return ext_name
        else:
            return self.package + '.' + ext_name


    def get_ext_filename(self, ext_name):
        '''Convert the name of an extension (eg. "foo.bar") into the name
        of the file from which it will be loaded (eg. "foo/bar.so", or
        "foo\\bar.pyd").
        '''
        get_config_var = get_config_var
        import distutils.sysconfig
        ext_path = string.split(ext_name, '.')
        if os.name == 'os2':
            ext_path[len(ext_path) - 1] = ext_path[len(ext_path) - 1][:8]

        so_ext = get_config_var('SO')
        if os.name == 'nt' and self.debug:
            return apply(os.path.join, ext_path) + '_d' + so_ext

        return apply(os.path.join, ext_path) + so_ext


    def get_export_symbols(self, ext):
        '''Return the list of symbols that a shared extension has to
        export.  This either uses \'ext.export_symbols\' or, if it\'s not
        provided, "init" + module_name.  Only relevant on Windows, where
        the .pyd file (DLL) must export the module "init" function.
        '''
        initfunc_name = 'init' + string.split(ext.name, '.')[-1]
        if initfunc_name not in ext.export_symbols:
            ext.export_symbols.append(initfunc_name)

        return ext.export_symbols


    def get_libraries(self, ext):
        """Return the list of libraries to link against when building a
        shared extension.  On most platforms, this is just 'ext.libraries';
        on Windows and OS/2, we add the Python library (eg. python20.dll).
        """
        if sys.platform == 'win32':
            MSVCCompiler = MSVCCompiler
            import distutils.msvccompiler
            if not isinstance(self.compiler, MSVCCompiler):
                template = 'python%d%d'
                if self.debug:
                    template = template + '_d'

                pythonlib = template % (sys.hexversion >> 24, sys.hexversion >> 16 & 255)
                return ext.libraries + [
                    pythonlib]
            else:
                return ext.libraries
        elif sys.platform == 'os2emx':
            template = 'python%d%d'
            pythonlib = template % (sys.hexversion >> 24, sys.hexversion >> 16 & 255)
            return ext.libraries + [
                pythonlib]
        elif sys.platform[:6] == 'cygwin':
            template = 'python%d.%d'
            pythonlib = template % (sys.hexversion >> 24, sys.hexversion >> 16 & 255)
            return ext.libraries + [
                pythonlib]
        elif sys.platform[:6] == 'atheos':
            sysconfig = sysconfig
            import distutils
            template = 'python%d.%d'
            pythonlib = template % (sys.hexversion >> 24, sys.hexversion >> 16 & 255)
            extra = []
            for lib in sysconfig.get_config_var('SHLIBS').split():
                if lib.startswith('-l'):
                    extra.append(lib[2:])
                    continue
                extra.append(lib)

            return ext.libraries + [
                pythonlib,
                'm'] + extra
        else:
            return ext.libraries