"""distutils.emxccompiler Provides the EMXCCompiler class, a subclass of UnixCCompiler thathandles the EMX port of the GNU C compiler to OS/2.""" # 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__ = "$Id: emxccompiler.py 34786 2003-12-02 12:17:59Z aimacintyre $" import os,sys,copyfrom distutils.ccompiler import gen_preprocess_options, gen_lib_optionsfrom distutils.unixccompiler import UnixCCompilerfrom distutils.file_util import write_filefrom distutils.errors import DistutilsExecError, CompileError, UnknownFileErrorfrom distutils import log class EMXCCompiler (UnixCCompiler):     compiler_type = 'emx'    obj_extension = ".obj"    static_lib_extension = ".lib"    shared_lib_extension = ".dll"    static_lib_format = "%s%s"    shared_lib_format = "%s%s"    res_extension = ".res"      # compiled resource file    exe_extension = ".exe"     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("Python's GCC status: %s (details: %s)" %                         (status, details))        if status is not CONFIG_H_OK:            self.warn(                "Python's pyconfig.h doesn't seem to support your compiler.  " +                ("Reason: %s." % details) +                "Compiling may fail because of undefined preprocessor macros.")         (self.gcc_version, self.ld_version) = \            get_versions()        self.debug_print(self.compiler_type + ": gcc %s, ld %s\n" %                         (self.gcc_version,                          self.ld_version) )         # Hard-code GCC because that's what this is all about.        # XXX optimization, warnings etc. should be customizable.        self.set_executables(compiler='gcc -Zomf -Zmt -O3 -fomit-frame-pointer -mprobe -Wall',                             compiler_so='gcc -Zomf -Zmt -O3 -fomit-frame-pointer -mprobe -Wall',                             linker_exe='gcc -Zomf -Zmt -Zcrtdll',                             linker_so='gcc -Zomf -Zmt -Zcrtdll -Zdll')         # want the gcc library statically linked (so that we don't have        # to distribute a version dependent on the compiler we have)        self.dll_libraries=["gcc"]     # __init__ ()     def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts):        if ext == '.rc':            # gcc requires '.rc' compiled to binary ('.res') files !!!            try:                self.spawn(["rc", "-r", src])            except DistutilsExecError, msg:                raise CompileError, msg        else: # for other files use the C-compiler            try:                self.spawn(self.compiler_so + cc_args + [src, '-o', 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'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'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 + ".def")             # Generate .def file            contents = [                "LIBRARY %s INITINSTANCE TERMINSTANCE" % \                os.path.splitext(os.path.basename(output_filename))[0],                "DATA MULTIPLE NONSHARED",                "EXPORTS"]            for sym in export_symbols:                contents.append('  "%s"' % sym)            self.execute(write_file, (def_file, contents),                         "writing %s" % 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 == "gcc")):         # 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 < stripped_file < ??100KB        #   unstripped_file = stripped_file + XXX KB        #  ( XXX=254 for a typical python extension))        if not debug:            extra_preargs.append("-s")         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=''):        if output_dir is None: output_dir = ''        obj_names = []        for src_name in source_filenames:            # use normcase to make sure '.rc' is really '.rc' and not '.RC'            (base, ext) = os.path.splitext (os.path.normcase(src_name))            if ext not in (self.src_extensions + ['.rc']):                raise UnknownFileError, \                      "unknown file type '%s' (from '%s')" % \                      (ext, src_name)            if strip_dir:                base = os.path.basename (base)            if ext == '.rc':                # 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 = '%s.lib' % lib        longlib = 'lib%s.lib' % lib    # this form very rare         # get EMX's default library directory search path        try:            emx_dirs = os.environ['LIBRARY_PATH'].split(';')        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't find it in *any* of 'dirs'        return None # class EMXCCompiler  # Because these compilers aren't configured in Python's pyconfig.h file by# default, we should at least warn the user if he is using a unmodified# version. CONFIG_H_OK = "ok"CONFIG_H_NOTOK = "not ok"CONFIG_H_UNCERTAIN = "uncertain" def check_config_h():     """Check if the current Python installation (specifically, pyconfig.h)    appears amenable to building extensions with GCC.  Returns a tuple    (status, details), where 'status' is one of the following constants:      CONFIG_H_OK        all is well, go ahead and compile      CONFIG_H_NOTOK        doesn't look good      CONFIG_H_UNCERTAIN        not sure -- unable to read pyconfig.h    'details' is a human-readable string explaining the situation.     Note there are two ways to conclude "OK": either 'sys.version' contains    the string "GCC" (implying that this Python was built with GCC), or the    installed "pyconfig.h" contains the string "__GNUC__".    """     # XXX since this function also checks sys.version, it's not strictly a    # "pyconfig.h" 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,"GCC") >= 0:        return (CONFIG_H_OK, "sys.version mentions 'GCC'")     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)        s = f.read()        f.close()     except IOError, exc:        # if we can't read this file, we cannot say it is wrong        # the compiler will complain later about this file as missing        return (CONFIG_H_UNCERTAIN,                "couldn't read '%s': %s" % (fn, exc.strerror))     else:        # "pyconfig.h" contains an "#ifdef __GNUC__" or something similar        if string.find(s,"__GNUC__") >= 0:            return (CONFIG_H_OK, "'%s' mentions '__GNUC__'" % fn)        else:            return (CONFIG_H_NOTOK, "'%s' does not mention '__GNUC__'" % fn)  def get_versions():    """ Try to find out the versions of gcc and ld.        If not possible it returns None for it.    """    from distutils.version import StrictVersion    from distutils.spawn import find_executable    import re     gcc_exe = find_executable('gcc')    if gcc_exe:        out = os.popen(gcc_exe + ' -dumpversion','r')        out_string = out.read()        out.close()        result = re.search('(\d+\.\d+\.\d+)',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)