

<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: emxccompiler.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.emxccompiler

Provides the EMXCCompiler class, a subclass of UnixCCompiler that
handles the EMX port of the GNU C compiler to OS/2.
&quot;&quot;&quot;

# issues:
#
# * OS/2 insists that DLLs can have names no longer than 8 characters
#   We put export_symbols in a def-file, as though the DLL can have
#   an arbitrary length name, but truncate the output filename.
#
# * only use OMF objects and use LINK386 as the linker (-Zomf)
#
# * always build for multithreading (-Zmt) as the accompanying OS/2 port
#   of Python is only distributed with threads enabled.
#
# tested configurations:
#
# * EMX gcc 2.81/EMX 0.9d fix03

__revision__ = &quot;$Id$&quot;

import os,sys,copy
from distutils.ccompiler import gen_preprocess_options, gen_lib_options
from distutils.unixccompiler import UnixCCompiler
from distutils.file_util import write_file
from distutils.errors import DistutilsExecError, CompileError, UnknownFileError
from distutils import log

class EMXCCompiler (UnixCCompiler):

    compiler_type = &#039;emx&#039;
    obj_extension = &quot;.obj&quot;
    static_lib_extension = &quot;.lib&quot;
    shared_lib_extension = &quot;.dll&quot;
    static_lib_format = &quot;%s%s&quot;
    shared_lib_format = &quot;%s%s&quot;
    res_extension = &quot;.res&quot;      # compiled resource file
    exe_extension = &quot;.exe&quot;

    def __init__ (self,
                  verbose=0,
                  dry_run=0,
                  force=0):

        UnixCCompiler.__init__ (self, verbose, dry_run, force)

        (status, details) = check_config_h()
        self.debug_print(&quot;Python&#039;s GCC status: %s (details: %s)&quot; %
                         (status, details))
        if status is not CONFIG_H_OK:
            self.warn(
                &quot;Python&#039;s pyconfig.h doesn&#039;t seem to support your compiler.  &quot; +
                (&quot;Reason: %s.&quot; % details) +
                &quot;Compiling may fail because of undefined preprocessor macros.&quot;)

        (self.gcc_version, self.ld_version) = \
            get_versions()
        self.debug_print(self.compiler_type + &quot;: gcc %s, ld %s\n&quot; %
                         (self.gcc_version,
                          self.ld_version) )

        # Hard-code GCC because that&#039;s what this is all about.
        # XXX optimization, warnings etc. should be customizable.
        self.set_executables(compiler=&#039;gcc -Zomf -Zmt -O3 -fomit-frame-pointer -mprobe -Wall&#039;,
                             compiler_so=&#039;gcc -Zomf -Zmt -O3 -fomit-frame-pointer -mprobe -Wall&#039;,
                             linker_exe=&#039;gcc -Zomf -Zmt -Zcrtdll&#039;,
                             linker_so=&#039;gcc -Zomf -Zmt -Zcrtdll -Zdll&#039;)

        # want the gcc library statically linked (so that we don&#039;t have
        # to distribute a version dependent on the compiler we have)
        self.dll_libraries=[&quot;gcc&quot;]

    # __init__ ()

    def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts):
        if ext == &#039;.rc&#039;:
            # gcc requires &#039;.rc&#039; compiled to binary (&#039;.res&#039;) files !!!
            try:
                self.spawn([&quot;rc&quot;, &quot;-r&quot;, src])
            except DistutilsExecError, msg:
                raise CompileError, msg
        else: # for other files use the C-compiler
            try:
                self.spawn(self.compiler_so + cc_args + [src, &#039;-o&#039;, obj] +
                           extra_postargs)
            except DistutilsExecError, msg:
                raise CompileError, msg

    def link (self,
              target_desc,
              objects,
              output_filename,
              output_dir=None,
              libraries=None,
              library_dirs=None,
              runtime_library_dirs=None,
              export_symbols=None,
              debug=0,
              extra_preargs=None,
              extra_postargs=None,
              build_temp=None,
              target_lang=None):

        # use separate copies, so we can modify the lists
        extra_preargs = copy.copy(extra_preargs or [])
        libraries = copy.copy(libraries or [])
        objects = copy.copy(objects or [])

        # Additional libraries
        libraries.extend(self.dll_libraries)

        # handle export symbols by creating a def-file
        # with executables this only works with gcc/ld as linker
        if ((export_symbols is not None) and
            (target_desc != self.EXECUTABLE)):
            # (The linker doesn&#039;t do anything if output is up-to-date.
            # So it would probably better to check if we really need this,
            # but for this we had to insert some unchanged parts of
            # UnixCCompiler, and this is not what we want.)

            # we want to put some files in the same directory as the
            # object files are, build_temp doesn&#039;t help much
            # where are the object files
            temp_dir = os.path.dirname(objects[0])
            # name of dll to give the helper files the same base name
            (dll_name, dll_extension) = os.path.splitext(
                os.path.basename(output_filename))

            # generate the filenames for these files
            def_file = os.path.join(temp_dir, dll_name + &quot;.def&quot;)

            # Generate .def file
            contents = [
                &quot;LIBRARY %s INITINSTANCE TERMINSTANCE&quot; % \
                os.path.splitext(os.path.basename(output_filename))[0],
                &quot;DATA MULTIPLE NONSHARED&quot;,
                &quot;EXPORTS&quot;]
            for sym in export_symbols:
                contents.append(&#039;  &quot;%s&quot;&#039; % sym)
            self.execute(write_file, (def_file, contents),
                         &quot;writing %s&quot; % def_file)

            # next add options for def-file and to creating import libraries
            # for gcc/ld the def-file is specified as any other object files
            objects.append(def_file)

        #end: if ((export_symbols is not None) and
        #        (target_desc != self.EXECUTABLE or self.linker_dll == &quot;gcc&quot;)):

        # who wants symbols and a many times larger output file
        # should explicitly switch the debug mode on
        # otherwise we let dllwrap/ld strip the output file
        # (On my machine: 10KB &lt; stripped_file &lt; ??100KB
        #   unstripped_file = stripped_file + XXX KB
        #  ( XXX=254 for a typical python extension))
        if not debug:
            extra_preargs.append(&quot;-s&quot;)

        UnixCCompiler.link(self,
                           target_desc,
                           objects,
                           output_filename,
                           output_dir,
                           libraries,
                           library_dirs,
                           runtime_library_dirs,
                           None, # export_symbols, we do this in our def-file
                           debug,
                           extra_preargs,
                           extra_postargs,
                           build_temp,
                           target_lang)

    # link ()

    # -- Miscellaneous methods -----------------------------------------

    # override the object_filenames method from CCompiler to
    # support rc and res-files
    def object_filenames (self,
                          source_filenames,
                          strip_dir=0,
                          output_dir=&#039;&#039;):
        if output_dir is None: output_dir = &#039;&#039;
        obj_names = []
        for src_name in source_filenames:
            # use normcase to make sure &#039;.rc&#039; is really &#039;.rc&#039; and not &#039;.RC&#039;
            (base, ext) = os.path.splitext (os.path.normcase(src_name))
            if ext not in (self.src_extensions + [&#039;.rc&#039;]):
                raise UnknownFileError, \
                      &quot;unknown file type &#039;%s&#039; (from &#039;%s&#039;)&quot; % \
                      (ext, src_name)
            if strip_dir:
                base = os.path.basename (base)
            if ext == &#039;.rc&#039;:
                # these need to be compiled to object files
                obj_names.append (os.path.join (output_dir,
                                            base + self.res_extension))
            else:
                obj_names.append (os.path.join (output_dir,
                                            base + self.obj_extension))
        return obj_names

    # object_filenames ()

    # override the find_library_file method from UnixCCompiler
    # to deal with file naming/searching differences
    def find_library_file(self, dirs, lib, debug=0):
        shortlib = &#039;%s.lib&#039; % lib
        longlib = &#039;lib%s.lib&#039; % lib    # this form very rare

        # get EMX&#039;s default library directory search path
        try:
            emx_dirs = os.environ[&#039;LIBRARY_PATH&#039;].split(&#039;;&#039;)
        except KeyError:
            emx_dirs = []

        for dir in dirs + emx_dirs:
            shortlibp = os.path.join(dir, shortlib)
            longlibp = os.path.join(dir, longlib)
            if os.path.exists(shortlibp):
                return shortlibp
            elif os.path.exists(longlibp):
                return longlibp

        # Oops, didn&#039;t find it in *any* of &#039;dirs&#039;
        return None

# class EMXCCompiler


# Because these compilers aren&#039;t configured in Python&#039;s pyconfig.h file by
# default, we should at least warn the user if he is using a unmodified
# version.

CONFIG_H_OK = &quot;ok&quot;
CONFIG_H_NOTOK = &quot;not ok&quot;
CONFIG_H_UNCERTAIN = &quot;uncertain&quot;

def check_config_h():

    &quot;&quot;&quot;Check if the current Python installation (specifically, pyconfig.h)
    appears amenable to building extensions with GCC.  Returns a tuple
    (status, details), where &#039;status&#039; is one of the following constants:
      CONFIG_H_OK
        all is well, go ahead and compile
      CONFIG_H_NOTOK
        doesn&#039;t look good
      CONFIG_H_UNCERTAIN
        not sure -- unable to read pyconfig.h
    &#039;details&#039; is a human-readable string explaining the situation.

    Note there are two ways to conclude &quot;OK&quot;: either &#039;sys.version&#039; contains
    the string &quot;GCC&quot; (implying that this Python was built with GCC), or the
    installed &quot;pyconfig.h&quot; contains the string &quot;__GNUC__&quot;.
    &quot;&quot;&quot;

    # XXX since this function also checks sys.version, it&#039;s not strictly a
    # &quot;pyconfig.h&quot; check -- should probably be renamed...

    from distutils import sysconfig
    import string
    # if sys.version contains GCC then python was compiled with
    # GCC, and the pyconfig.h file should be OK
    if string.find(sys.version,&quot;GCC&quot;) &gt;= 0:
        return (CONFIG_H_OK, &quot;sys.version mentions &#039;GCC&#039;&quot;)

    fn = sysconfig.get_config_h_filename()
    try:
        # It would probably better to read single lines to search.
        # But we do this only once, and it is fast enough
        f = open(fn)
        try:
            s = f.read()
        finally:
            f.close()

    except IOError, exc:
        # if we can&#039;t read this file, we cannot say it is wrong
        # the compiler will complain later about this file as missing
        return (CONFIG_H_UNCERTAIN,
                &quot;couldn&#039;t read &#039;%s&#039;: %s&quot; % (fn, exc.strerror))

    else:
        # &quot;pyconfig.h&quot; contains an &quot;#ifdef __GNUC__&quot; or something similar
        if string.find(s,&quot;__GNUC__&quot;) &gt;= 0:
            return (CONFIG_H_OK, &quot;&#039;%s&#039; mentions &#039;__GNUC__&#039;&quot; % fn)
        else:
            return (CONFIG_H_NOTOK, &quot;&#039;%s&#039; does not mention &#039;__GNUC__&#039;&quot; % fn)


def get_versions():
    &quot;&quot;&quot; Try to find out the versions of gcc and ld.
        If not possible it returns None for it.
    &quot;&quot;&quot;
    from distutils.version import StrictVersion
    from distutils.spawn import find_executable
    import re

    gcc_exe = find_executable(&#039;gcc&#039;)
    if gcc_exe:
        out = os.popen(gcc_exe + &#039; -dumpversion&#039;,&#039;r&#039;)
        try:
            out_string = out.read()
        finally:
            out.close()
        result = re.search(&#039;(\d+\.\d+\.\d+)&#039;,out_string)
        if result:
            gcc_version = StrictVersion(result.group(1))
        else:
            gcc_version = None
    else:
        gcc_version = None
    # EMX ld has no way of reporting version number, and we use GCC
    # anyway - so we can link OMF DLLs
    ld_version = None
    return (gcc_version, ld_version)
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