def _find_existing_fcompiler(compiler_types, osname=None, platform=None, requiref90=False, c_compiler=None):
    from numpy.distutils.core import get_distribution

    dist = get_distribution(always=True)
    for compiler_type in compiler_types:
        v = None
        try:
            c = new_fcompiler(plat=platform, compiler=compiler_type, c_compiler=c_compiler)
            c.customize(dist)
            v = c.get_version()
            if requiref90 and c.compiler_f90 is None:
                v = None
                new_compiler = c.suggested_f90_compiler
                if new_compiler:
                    log.warn(
                        "Trying %r compiler as suggested by %r "
                        "compiler for f90 support." % (compiler_type, new_compiler)
                    )
                    c = new_fcompiler(plat=platform, compiler=new_compiler, c_compiler=c_compiler)
                    c.customize(dist)
                    v = c.get_version()
                    if v is not None:
                        compiler_type = new_compiler
            if requiref90 and c.compiler_f90 is None:
                raise ValueError("%s does not support compiling f90 codes, " "skipping." % (c.__class__.__name__))
        except DistutilsModuleError:
            log.debug("_find_existing_fcompiler: compiler_type='%s' raised DistutilsModuleError", compiler_type)
        except CompilerNotFound:
            log.debug("_find_existing_fcompiler: compiler_type='%s' not found", compiler_type)
        if v is not None:
            return compiler_type
    return None

def CCompiler_get_version(self, force=0, ok_status=[0]):
    """ Compiler version. Returns None if compiler is not available. """
    if not force and hasattr(self,'version'):
        return self.version
    try:
        version_cmd = self.version_cmd
    except AttributeError:
        return None
    cmd = ' '.join(version_cmd)
    try:
        matcher = self.version_match
    except AttributeError:
        try:
            pat = self.version_pattern
        except AttributeError:
            return None
        def matcher(version_string):
            m = re.match(pat, version_string)
            if not m:
                return None
            version = m.group('version')
            return version

    status, output = exec_command(cmd,use_tee=0)
    version = None
    if status in ok_status:
        version = matcher(output)
        if not version:
            log.warn("Couldn't match compiler version for %r" % (output,))
        else:
            version = LooseVersion(version)
    self.version = version
    return version

def CCompiler_customize(self, dist, need_cxx=0):
    """
    Do any platform-specific customization of a compiler instance.

    This method calls `distutils.sysconfig.customize_compiler` for
    platform-specific customization, as well as optionally remove a flag
    to suppress spurious warnings in case C++ code is being compiled.

    Parameters
    ----------
    dist : object
        This parameter is not used for anything.
    need_cxx : bool, optional
        Whether or not C++ has to be compiled. If so (True), the
        ``"-Wstrict-prototypes"`` option is removed to prevent spurious
        warnings. Default is False.

    Returns
    -------
    None

    Notes
    -----
    All the default options used by distutils can be extracted with::

      from distutils import sysconfig
      sysconfig.get_config_vars('CC', 'CXX', 'OPT', 'BASECFLAGS',
                                'CCSHARED', 'LDSHARED', 'SO')

    """
    # See FCompiler.customize for suggested usage.
    log.info('customize %s' % (self.__class__.__name__))
    customize_compiler(self)
    if need_cxx:
        # In general, distutils uses -Wstrict-prototypes, but this option is
        # not valid for C++ code, only for C.  Remove it if it's there to
        # avoid a spurious warning on every compilation.  All the default
        # options used by distutils can be extracted with:

        # from distutils import sysconfig
        # sysconfig.get_config_vars('CC', 'CXX', 'OPT', 'BASECFLAGS',
        # 'CCSHARED', 'LDSHARED', 'SO')
        try:
            self.compiler_so.remove('-Wstrict-prototypes')
        except (AttributeError, ValueError):
            pass

        if hasattr(self,'compiler') and 'cc' in self.compiler[0]:
            if not self.compiler_cxx:
                if self.compiler[0].startswith('gcc'):
                    a, b = 'gcc', 'g++'
                else:
                    a, b = 'cc', 'c++'
                self.compiler_cxx = [self.compiler[0].replace(a,b)]\
                                    + self.compiler[1:]
        else:
            if hasattr(self,'compiler'):
                log.warn("#### %s #######" % (self.compiler,))
            log.warn('Missing compiler_cxx fix for '+self.__class__.__name__)
    return

 def finalize_options(self):
     log.info("unifing config_fc, config, build_clib, build_ext, build commands --fcompiler options")
     build_clib = self.get_finalized_command("build_clib")
     build_ext = self.get_finalized_command("build_ext")
     config = self.get_finalized_command("config")
     build = self.get_finalized_command("build")
     cmd_list = [self, config, build_clib, build_ext, build]
     for a in ["fcompiler"]:
         l = []
         for c in cmd_list:
             v = getattr(c, a)
             if v is not None:
                 if not isinstance(v, str):
                     v = v.compiler_type
                 if v not in l:
                     l.append(v)
         if not l:
             v1 = None
         else:
             v1 = l[0]
         if len(l) > 1:
             log.warn("  commands have different --%s options: %s" ", using first in list as default" % (a, l))
         if v1:
             for c in cmd_list:
                 if getattr(c, a) is None:
                     setattr(c, a, v1)

def generate_a_cython_source(self, base, ext_name, source, extension):
        if self.inplace or not have_cython():
            target_dir = os.path.dirname(base)
        else:
            target_dir = appendpath(self.build_src, os.path.dirname(base))
        target_file = os.path.join(target_dir, ext_name + '.c')
        depends = [source] + extension.depends
        if self.force or newer_group(depends, target_file, 'newer'):
            if have_cython():
                import Cython.Compiler.Main
                log.info("cythonc:> %s: %s " % (target_dir, target_file))
                log.info("cwd %s " % (os.getcwd()))
                self.mkpath(target_dir)
                options = Cython.Compiler.Main.CompilationOptions(
                    defaults=Cython.Compiler.Main.default_options,
                    include_path=extension.include_dirs,
                    output_file=target_file
                    )
                #log.info('\n'.join([s + ' ' + str(getattr(options, s)) for s in dir(options)]))
                # avoid calling compile_single, because it will give wrong module names.
                cython_result = Cython.Compiler.Main.compile([source],
                                                           options=options)
                if cython_result.num_errors != 0:
                    raise DistutilsError("%d errors while compiling %r with Cython" \
                          % (cython_result.num_errors, source))
            elif os.path.isfile(target_file):
                log.warn("Cython required for compiling %r but not available,"\
                         " using old target %r"\
                         % (source, target_file))
            else:
                raise DistutilsError("Cython required for compiling %r"\
                                     " but notavailable" % (source,))
        return target_file

def _find_existing_fcompiler(compilers, osname=None, platform=None, requiref90=None):
    for compiler in compilers:
        v = None
        try:
            c = new_fcompiler(plat=platform, compiler=compiler)
            c.customize()
            v = c.get_version()
            if requiref90 and c.compiler_f90 is None:
                v = None
                new_compiler = c.suggested_f90_compiler
                if new_compiler:
                    log.warn('Trying %r compiler as suggested by %r compiler for f90 support.' % (compiler, new_compiler))
                    c = new_fcompiler(plat=platform, compiler=new_compiler)
                    c.customize()
                    v = c.get_version()
                    if v is not None:
                        compiler = new_compiler
            if requiref90 and c.compiler_f90 is None:
                raise ValueError,'%s does not support compiling f90 codes, skipping.' \
                      % (c.__class__.__name__)
        except DistutilsModuleError:
            pass
        except Exception, msg:
            log.warn(msg)
        if v is not None:
            return compiler

def new_fcompiler(plat=None,
                  compiler=None,
                  verbose=0,
                  dry_run=0,
                  force=0,
                  requiref90=False,
                  c_compiler = None):
    """Generate an instance of some FCompiler subclass for the supplied
    platform/compiler combination.
    """
    load_all_fcompiler_classes()
    if plat is None:
        plat = os.name
    if compiler is None:
        compiler = get_default_fcompiler(plat, requiref90=requiref90,
                                         c_compiler=c_compiler)
    if compiler in fcompiler_class:
        module_name, klass, long_description = fcompiler_class[compiler]
    elif compiler in fcompiler_aliases:
        module_name, klass, long_description = fcompiler_aliases[compiler]
    else:
        msg = "don't know how to compile Fortran code on platform '%s'" % plat
        if compiler is not None:
            msg = msg + " with '%s' compiler." % compiler
            msg = msg + " Supported compilers are: %s)" \
                  % (','.join(fcompiler_class.keys()))
        log.warn(msg)
        return None

    compiler = klass(verbose=verbose, dry_run=dry_run, force=force)
    compiler.c_compiler = c_compiler
    return compiler

    def generate_a_pyrex_source(self, base, ext_name, source, extension):
        if self.inplace or not have_pyrex():
            target_dir = os.path.dirname(base)
        else:
            target_dir = appendpath(self.build_src, os.path.dirname(base))
        target_file = os.path.join(target_dir, ext_name + ".c")
        depends = [source] + extension.depends
        if self.force or newer_group(depends, target_file, "newer"):
            if have_pyrex():
                import Pyrex.Compiler.Main

                log.info("pyrexc:> %s" % (target_file))
                self.mkpath(target_dir)
                options = Pyrex.Compiler.Main.CompilationOptions(
                    defaults=Pyrex.Compiler.Main.default_options,
                    include_path=extension.include_dirs,
                    output_file=target_file,
                )
                pyrex_result = Pyrex.Compiler.Main.compile(source, options=options)
                if pyrex_result.num_errors != 0:
                    raise DistutilsError("%d errors while compiling %r with Pyrex" % (pyrex_result.num_errors, source))
            elif os.path.isfile(target_file):
                log.warn(
                    "Pyrex required for compiling %r but not available," " using old target %r" % (source, target_file)
                )
            else:
                raise DistutilsError("Pyrex required for compiling %r" " but notavailable" % (source,))
        return target_file

def generate_def(dll, dfile):
    """Given a dll file location,  get all its exported symbols and dump them
    into the given def file.

    The .def file will be overwritten"""
    dump = dump_table(dll)
    for i in range(len(dump)):
        if _START.match(dump[i].decode()):
            break
    else:
        raise ValueError("Symbol table not found")

    syms = []
    for j in range(i+1, len(dump)):
        m = _TABLE.match(dump[j].decode())
        if m:
            syms.append((int(m.group(1).strip()), m.group(2)))
        else:
            break

    if len(syms) == 0:
        log.warn('No symbols found in %s' % dll)

    d = open(dfile, 'w')
    d.write('LIBRARY        %s\n' % os.path.basename(dll))
    d.write(';CODE          PRELOAD MOVEABLE DISCARDABLE\n')
    d.write(';DATA          PRELOAD SINGLE\n')
    d.write('\nEXPORTS\n')
    for s in syms:
        #d.write('@%d    %s\n' % (s[0], s[1]))
        d.write('%s\n' % s[1])
    d.close()

def _build_import_library_x86():
    """ Build the import libraries for Mingw32-gcc on Windows
    """
    lib_name = "python%d%d.lib" % tuple(sys.version_info[:2])
    lib_file = os.path.join(sys.prefix, 'libs', lib_name)
    out_name = "libpython%d%d.a" % tuple(sys.version_info[:2])
    out_file = os.path.join(sys.prefix, 'libs', out_name)
    if not os.path.isfile(lib_file):
        log.warn('Cannot build import library: "%s" not found' % (lib_file))
        return
    if os.path.isfile(out_file):
        log.debug('Skip building import library: "%s" exists' % (out_file))
        return
    log.info('Building import library (ARCH=x86): "%s"' % (out_file))

    from numpy.distutils import lib2def

    def_name = "python%d%d.def" % tuple(sys.version_info[:2])
    def_file = os.path.join(sys.prefix, 'libs', def_name)
    nm_cmd = '%s %s' % (lib2def.DEFAULT_NM, lib_file)
    nm_output = lib2def.getnm(nm_cmd)
    dlist, flist = lib2def.parse_nm(nm_output)
    lib2def.output_def(dlist, flist, lib2def.DEF_HEADER, open(def_file, 'w'))

    dll_name = "python%d%d.dll" % tuple(sys.version_info[:2])
    args = (dll_name, def_file, out_file)
    cmd = 'dlltool --dllname %s --def %s --output-lib %s' % args
    status = os.system(cmd)
    # for now, fail silently
    if status:
        log.warn('Failed to build import library for gcc. Linking will fail.')
    return

def package_check(pkg_name, version=None,
                  optional=False,
                  checker=LooseVersion,
                  version_getter=None,
                  ):
    ''' Check if package `pkg_name` is present, and correct version

    Parameters
    ----------
    pkg_name : str
       name of package as imported into python
    version : {None, str}, optional
       minimum version of the package that we require. If None, we don't
       check the version.  Default is None
    optional : {False, True}, optional
       If False, raise error for absent package or wrong version;
       otherwise warn
    checker : callable, optional
       callable with which to return comparable thing from version
       string.  Default is ``distutils.version.LooseVersion``
    version_getter : {None, callable}:
       Callable that takes `pkg_name` as argument, and returns the
       package version string - as in::
       
          ``version = version_getter(pkg_name)``

       If None, equivalent to::

          mod = __import__(pkg_name); version = mod.__version__``
    '''
    if version_getter is None:
        def version_getter(pkg_name):
            mod = __import__(pkg_name)
            return mod.__version__
    try:
        mod = __import__(pkg_name)
    except ImportError:
        if not optional:
            raise RuntimeError('Cannot import package "%s" '
                               '- is it installed?' % pkg_name)
        log.warn('Missing optional package "%s"; '
                 'you may get run-time errors' % pkg_name)
        return
    if not version:
        return
    try:
        have_version = version_getter(pkg_name)
    except AttributeError:
        raise RuntimeError('Cannot find version for %s' % pkg_name)
    if checker(have_version) < checker(version):
        v_msg = 'You have version %s of package "%s"' \
            ' but we need version >= %s' % (
            have_version,
            pkg_name,
            version,
            )
        if optional:
            log.warn(v_msg + '; you may get run-time errors')
        else:
            raise RuntimeError(v_msg)

    def _libs_with_msvc_and_fortran(self, fcompiler, c_libraries,
                                    c_library_dirs):
        if fcompiler is None:
            return

        for libname in c_libraries:
            if libname.startswith('msvc'):
                continue
            fileexists = False
            for libdir in c_library_dirs or []:
                libfile = os.path.join(libdir, '%s.lib' % (libname))
                if os.path.isfile(libfile):
                    fileexists = True
                    break
            if fileexists:
                continue
            # make g77-compiled static libs available to MSVC
            fileexists = False
            for libdir in c_library_dirs:
                libfile = os.path.join(libdir, 'lib%s.a' % (libname))
                if os.path.isfile(libfile):
                    # copy libname.a file to name.lib so that MSVC linker
                    # can find it
                    libfile2 = os.path.join(self.build_temp, libname + '.lib')
                    copy_file(libfile, libfile2)
                    if self.build_temp not in c_library_dirs:
                        c_library_dirs.append(self.build_temp)
                    fileexists = True
                    break
            if fileexists:
                continue
            log.warn('could not find library %r in directories %s'
                     % (libname, c_library_dirs))

        # Always use system linker when using MSVC compiler.
        f_lib_dirs = []
        for dir in fcompiler.library_dirs:
            # correct path when compiling in Cygwin but with normal Win
            # Python
            if dir.startswith('/usr/lib'):
                try:
                    dir = subprocess.check_output(['cygpath', '-w', dir])
                except (OSError, subprocess.CalledProcessError):
                    pass
                else:
                    dir = filepath_from_subprocess_output(dir)
            f_lib_dirs.append(dir)
        c_library_dirs.extend(f_lib_dirs)

        # make g77-compiled static libs available to MSVC
        for lib in fcompiler.libraries:
            if not lib.startswith('msvc'):
                c_libraries.append(lib)
                p = combine_paths(f_lib_dirs, 'lib' + lib + '.a')
                if p:
                    dst_name = os.path.join(self.build_temp, lib + '.lib')
                    if not os.path.isfile(dst_name):
                        copy_file(p[0], dst_name)
                    if self.build_temp not in c_library_dirs:
                        c_library_dirs.append(self.build_temp)

def CCompiler_customize(self, dist, need_cxx=0):
    # See FCompiler.customize for suggested usage.
    log.info('customize %s' % (self.__class__.__name__))
    customize_compiler(self)
    if need_cxx:
        # In general, distutils uses -Wstrict-prototypes, but this option is
        # not valid for C++ code, only for C.  Remove it if it's there to
        # avoid a spurious warning on every compilation.  All the default
        # options used by distutils can be extracted with:

        # from distutils import sysconfig
        # sysconfig.get_config_vars('CC', 'CXX', 'OPT', 'BASECFLAGS',
        # 'CCSHARED', 'LDSHARED', 'SO')
        print "compiler options1:", self.compiler_so
        try:
            self.compiler_so.remove('-Wstrict-prototypes')
        except (AttributeError, ValueError):
            pass
        print "compiler options2:", self.compiler_so
        if hasattr(self,'compiler') and self.compiler[0].find('cc')>=0:
            if not self.compiler_cxx:
                if self.compiler[0].startswith('gcc'):
                    a, b = 'gcc', 'g++'
                else:
                    a, b = 'cc', 'c++'
                self.compiler_cxx = [self.compiler[0].replace(a,b)]\
                                    + self.compiler[1:]
        else:
            if hasattr(self,'compiler'):
                 log.warn("#### %s #######" % (self.compiler,))
            log.warn('Missing compiler_cxx fix for '+self.__class__.__name__)
    return

def build_msvcr_library(debug=False):
    if os.name != 'nt':
        return False

    # If the version number is None, then we couldn't find the MSVC runtime at
    # all, because we are running on a Python distribution which is customed
    # compiled; trust that the compiler is the same as the one available to us
    # now, and that it is capable of linking with the correct runtime without
    # any extra options.
    msvcr_ver = msvc_runtime_major()
    if msvcr_ver is None:
        log.debug('Skip building import library: '
                  'Runtime is not compiled with MSVC')
        return False

    # Skip using a custom library for versions < MSVC 8.0
    if msvcr_ver < 80:
        log.debug('Skip building msvcr library:'
                  ' custom functionality not present')
        return False

    msvcr_name = msvc_runtime_library()
    if debug:
        msvcr_name += 'd'

    # Skip if custom library already exists
    out_name = "lib%s.a" % msvcr_name
    out_file = os.path.join(sys.prefix, 'libs', out_name)
    if os.path.isfile(out_file):
        log.debug('Skip building msvcr library: "%s" exists' %
                  (out_file,))
        return True

    # Find the msvcr dll
    msvcr_dll_name = msvcr_name + '.dll'
    dll_file = find_dll(msvcr_dll_name)
    if not dll_file:
        log.warn('Cannot build msvcr library: "%s" not found' %
                 msvcr_dll_name)
        return False

    def_name = "lib%s.def" % msvcr_name
    def_file = os.path.join(sys.prefix, 'libs', def_name)

    log.info('Building msvcr library: "%s" (from %s)' \
             % (out_file, dll_file))

    # Generate a symbol definition file from the msvcr dll
    generate_def(dll_file, def_file)

    # Create a custom mingw library for the given symbol definitions
    cmd = ['dlltool', '-d', def_file, '-l', out_file]
    retcode = subprocess.call(cmd)

    # Clean up symbol definitions
    os.remove(def_file)

    return (not retcode)

    def _libs_with_msvc_and_fortran(self, fcompiler, c_libraries, c_library_dirs):
        if fcompiler is None:
            return

        for libname in c_libraries:
            if libname.startswith("msvc"):
                continue
            fileexists = False
            for libdir in c_library_dirs or []:
                libfile = os.path.join(libdir, "%s.lib" % (libname))
                if os.path.isfile(libfile):
                    fileexists = True
                    break
            if fileexists:
                continue
            # make g77-compiled static libs available to MSVC
            fileexists = False
            for libdir in c_library_dirs:
                libfile = os.path.join(libdir, "lib%s.a" % (libname))
                if os.path.isfile(libfile):
                    # copy libname.a file to name.lib so that MSVC linker
                    # can find it
                    libfile2 = os.path.join(self.build_temp, libname + ".lib")
                    copy_file(libfile, libfile2)
                    if self.build_temp not in c_library_dirs:
                        c_library_dirs.append(self.build_temp)
                    fileexists = True
                    break
            if fileexists:
                continue
            log.warn("could not find library %r in directories %s" % (libname, c_library_dirs))

        # Always use system linker when using MSVC compiler.
        f_lib_dirs = []
        for dir in fcompiler.library_dirs:
            # correct path when compiling in Cygwin but with normal Win
            # Python
            if dir.startswith("/usr/lib"):
                s, o = exec_command(["cygpath", "-w", dir], use_tee=False)
                if not s:
                    dir = o
            f_lib_dirs.append(dir)
        c_library_dirs.extend(f_lib_dirs)

        # make g77-compiled static libs available to MSVC
        for lib in fcompiler.libraries:
            if not lib.startswith("msvc"):
                c_libraries.append(lib)
                p = combine_paths(f_lib_dirs, "lib" + lib + ".a")
                if p:
                    dst_name = os.path.join(self.build_temp, lib + ".lib")
                    if not os.path.isfile(dst_name):
                        copy_file(p[0], dst_name)
                    if self.build_temp not in c_library_dirs:
                        c_library_dirs.append(self.build_temp)

def _exec_command_posix( command,
                         use_shell = None,
                         use_tee = None,
                         **env ):
    log.debug('_exec_command_posix(...)')

    if is_sequence(command):
        command_str = ' '.join(list(command))
    else:
        command_str = command

    tmpfile = temp_file_name()
    stsfile = None
    if use_tee:
        stsfile = temp_file_name()
        filter = ''
        if use_tee == 2:
            filter = r'| tr -cd "\n" | tr "\n" "."; echo'
        command_posix = '( %s ; echo $? > %s ) 2>&1 | tee %s %s'\
                      % (command_str, stsfile, tmpfile, filter)
    else:
        stsfile = temp_file_name()
        command_posix = '( %s ; echo $? > %s ) > %s 2>&1'\
                        % (command_str, stsfile, tmpfile)
        #command_posix = '( %s ) > %s 2>&1' % (command_str,tmpfile)

    log.debug('Running os.system(%r)' % (command_posix))
    status = os.system(command_posix)

    if use_tee:
        if status:
            # if command_tee fails then fall back to robust exec_command
            log.warn('_exec_command_posix failed (status=%s)' % status)
            return _exec_command(command, use_shell=use_shell, **env)

    if stsfile is not None:
        f = open_latin1(stsfile, 'r')
        status_text = f.read()
        status = int(status_text)
        f.close()
        os.remove(stsfile)

    f = open_latin1(tmpfile, 'r')
    text = f.read()
    f.close()
    os.remove(tmpfile)

    if text[-1:]=='\n':
        text = text[:-1]

    return status, text

def build_msvcr_library(debug=False):
    if os.name != 'nt':
        return False

    msvcr_name = msvc_runtime_library()

    # Skip using a custom library for versions < MSVC 8.0
    msvcr_ver = msvc_runtime_major()
    if msvcr_ver and msvcr_ver < 80:
        log.debug('Skip building msvcr library:'
                  ' custom functionality not present')
        return False

    if debug:
        msvcr_name += 'd'

    # Skip if custom library already exists
    out_name = "lib%s.a" % msvcr_name
    out_file = os.path.join(sys.prefix, 'libs', out_name)
    if os.path.isfile(out_file):
        log.debug('Skip building msvcr library: "%s" exists' %
                  (out_file,))
        return True

    # Find the msvcr dll
    msvcr_dll_name = msvcr_name + '.dll'
    dll_file = find_dll(msvcr_dll_name)
    if not dll_file:
        log.warn('Cannot build msvcr library: "%s" not found' %
                 msvcr_dll_name)
        return False

    def_name = "lib%s.def" % msvcr_name
    def_file = os.path.join(sys.prefix, 'libs', def_name)

    log.info('Building msvcr library: "%s" (from %s)' \
             % (out_file, dll_file))

    # Generate a symbol definition file from the msvcr dll
    generate_def(dll_file, def_file)

    # Create a custom mingw library for the given symbol definitions
    cmd = ['dlltool', '-d', def_file, '-l', out_file]
    retcode = subprocess.call(cmd)

    # Clean up symbol definitions
    os.remove(def_file)

    return (not retcode)

        def generate_a_script(build_dir, script=script, config=config):
            dist = config.get_distribution()
            install_lib = dist.get_command_obj('install_lib')
            if not install_lib.finalized:
                install_lib.finalize_options()

            script_replace_text = ''
            install_lib = install_lib.install_dir
            if install_lib is not None:
                script_replace_text = '''
import sys
if %(d)r not in sys.path:
    sys.path.insert(0, %(d)r)
''' % dict(d=install_lib)
            if multiprocessing is not None:
                mp_install_lib = dirname(dirname(multiprocessing.__file__))
                script_replace_text += '''
if %(d)r not in sys.path:
    sys.path.insert(0, %(d)r)
''' % dict(d=mp_install_lib)

            start_mark = '### START UPDATE SYS.PATH ###'
            end_mark = '### END UPDATE SYS.PATH ###'
            name = basename(script)
            if name.startswith (script_prefix):
                target_name = name
            elif wininst:
                target_name = script_prefix + '_' + name
            else:
                target_name = script_prefix + '.' + splitext(name)[0]
            target = join(build_dir, target_name)
            if newer(script, target) or 1:
                log.info('Creating %r', target)
                f = open (script, 'r')
                text = f.read()
                f.close()

                i = text.find(start_mark)
                if i != -1:
                    j = text.find (end_mark)
                    if j == -1:
                        log.warn ("%r missing %r line", script, start_mark)
                    new_text = text[:i+len (start_mark)] + script_replace_text + text[j:]
                else:
                    new_text = text

                f = open(target, 'w')
                f.write(new_text)
                f.close()

def find_executable(exe, path=None, _cache={}):
    """Return full path of a executable or None.

    Symbolic links are not followed.
    """
    key = exe, path
    try:
        return _cache[key]
    except KeyError:
        pass
    log.debug("find_executable(%r)" % exe)
    orig_exe = exe

    if path is None:
        path = os.environ.get("PATH", os.defpath)
    if os.name == "posix":
        realpath = os.path.realpath
    else:
        realpath = lambda a: a

    if exe.startswith('"'):
        exe = exe[1:-1]

    suffixes = [""]
    if os.name in ["nt", "dos", "os2"]:
        fn, ext = os.path.splitext(exe)
        extra_suffixes = [".exe", ".com", ".bat"]
        if ext.lower() not in extra_suffixes:
            suffixes = extra_suffixes

    if os.path.isabs(exe):
        paths = [""]
    else:
        paths = [os.path.abspath(p) for p in path.split(os.pathsep)]

    for path in paths:
        fn = os.path.join(path, exe)
        for s in suffixes:
            f_ext = fn + s
            if not os.path.islink(f_ext):
                f_ext = realpath(f_ext)
            if os.path.isfile(f_ext) and os.access(f_ext, os.X_OK):
                log.good("Found executable %s" % f_ext)
                _cache[key] = f_ext
                return f_ext

    log.warn("Could not locate executable %s" % orig_exe)
    return None

def find_executable(exe, path=None, _cache={}):
    """Return full path of a executable or None.

    Symbolic links are not followed.
    """
    key = exe, path
    try:
        return _cache[key]
    except KeyError:
        pass
    log.debug('find_executable(%r)' % exe)
    orig_exe = exe

    if path is None:
        path = os.environ.get('PATH', os.defpath)
    if os.name=='posix':
        realpath = os.path.realpath
    else:
        realpath = lambda a:a

    if exe.startswith('"'):
        exe = exe[1:-1]

    suffixes = ['']
    if os.name in ['nt', 'dos', 'os2']:
        fn, ext = os.path.splitext(exe)
        extra_suffixes = ['.exe', '.com', '.bat']
        if ext.lower() not in extra_suffixes:
            suffixes = extra_suffixes

    if os.path.isabs(exe):
        paths = ['']
    else:
        paths = [ os.path.abspath(p) for p in path.split(os.pathsep) ]

    for path in paths:
        fn = os.path.join(path, exe)
        for s in suffixes:
            f_ext = fn+s
            if not os.path.islink(f_ext):
                f_ext = realpath(f_ext)
            if os.path.isfile(f_ext) and os.access(f_ext, os.X_OK):
                log.info('Found executable %s' % f_ext)
                _cache[key] = f_ext
                return f_ext

    log.warn('Could not locate executable %s' % orig_exe)
    return None