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 .›    """distutils.emxccompiler

Provides the EMXCCompiler class, a subclass of UnixCCompiler that
handles 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__ = "$Id$"

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 = '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 creati