Forgot to add the new emxccompiler.py from Andrew I. MacIntyre's

distutils patch for OS/2.

Here it is...

Lib/distutils/emxccompiler.py

+"""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
+
+# created 2001/5/7, Andrew MacIntyre, from Rene Liebscher's cywinccompiler.py
+
+__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
+
+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 -O2 -Wall',
+                             compiler_so='gcc -Zomf -Zmt -O2 -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__ ()
+
+    # not much different of the compile method in UnixCCompiler,
+    # but we have to insert some lines in the middle of it, so
+    # we put here a adapted version of it.
+    # (If we would call compile() in the base class, it would do some 
+    # initializations a second time, this is why all is done here.)
+    def compile (self,
+                 sources,
+                 output_dir=None,
+                 macros=None,
+                 include_dirs=None,
+                 debug=0,
+                 extra_preargs=None,
+                 extra_postargs=None):
+
+        (output_dir, macros, include_dirs) = \
+            self._fix_compile_args (output_dir, macros, include_dirs)
+        (objects, skip_sources) = self._prep_compile (sources, output_dir)
+
+        # Figure out the options for the compiler command line.
+        pp_opts = gen_preprocess_options (macros, include_dirs)
+        cc_args = pp_opts + ['-c']
+        if debug:
+            cc_args[:0] = ['-g']
+        if extra_preargs:
+            cc_args[:0] = extra_preargs
+        if extra_postargs is None:
+            extra_postargs = []
+
+        # Compile all source files that weren't eliminated by
+        # '_prep_compile()'.        
+        for i in range (len (sources)):
+            src = sources[i] ; obj = objects[i]
+            ext = (os.path.splitext (src))[1]
+            if skip_sources[src]:
+                self.announce ("skipping %s (%s up-to-date)" % (src, obj))
+            else:
+                self.mkpath (os.path.dirname (obj))
+                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
+
+        # Return *all* object filenames, not just the ones we just built.
+        return objects
+
+    # compile ()
+
+
+    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):
+        
+        # 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")
+            lib_file = os.path.join(temp_dir, dll_name + ".lib")
+       
+            # 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)
+        
+    # link ()
+
+    # -- Miscellaneous methods -----------------------------------------
+
+    # overwrite the one 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 ()
+
+# 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)
+