Index: setuptools/extension.py

===================================================================

--- setuptools/extension.py	(revision 75864)

+++ setuptools/extension.py	(working copy)

@@ -28,6 +28,11 @@

 class Library(Extension):

     """Just like a regular Extension, but built as a library instead"""

+    def __init__(self, *args, **kwds):

+        self.force_shared = kwds.pop('force_shared', False)

+        Extension.__init__(self, *args, **kwds)

+

+

 import sys, distutils.core, distutils.extension

 distutils.core.Extension = Extension

 distutils.extension.Extension = Extension

Index: setuptools/command/build_ext.py

===================================================================

--- setuptools/command/build_ext.py	(revision 75864)

+++ setuptools/command/build_ext.py	(working copy)

@@ -85,8 +85,12 @@

         if fullname in self.ext_map:

             ext = self.ext_map[fullname]

             if isinstance(ext,Library):

+                if ext.force_shared and not use_stubs:

+                    _libtype = 'shared'

+                else:

+                    _libtype = libtype

                 fn, ext = os.path.splitext(filename)

-                return self.shlib_compiler.library_filename(fn,libtype)

+                return self.shlib_compiler.library_filename(fn,_libtype)

             elif use_stubs and ext._links_to_dynamic:

                 d,fn = os.path.split(filename)

                 return os.path.join(d,'dl-'+fn)

@@ -170,14 +174,22 @@

     def build_extension(self, ext):

         _compiler = self.compiler

         try:

+            force_shared = False

             if isinstance(ext,Library):

                 self.compiler = self.shlib_compiler

+                force_shared = ext.force_shared and not use_stubs

+                if force_shared:

+                    self.compiler.link_shared_object = \

+                        sh_link_shared_object.__get__(self.compiler)

             _build_ext.build_extension(self,ext)

             if ext._needs_stub:

                 self.write_stub(

                     self.get_finalized_command('build_py').build_lib, ext

                 )

         finally:

+            if force_shared:

+                self.compiler.link_shared_object = \

+                    link_shared_object.__get__(self.compiler)

             self.compiler = _compiler

     def links_to_dynamic(self, ext):

@@ -244,44 +256,41 @@

                 os.unlink(stub_file)

-if use_stubs or os.name=='nt':

-    # Build shared libraries

-    #

-    def link_shared_object(self, objects, output_libname, 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

-    ):  self.link(

-            self.SHARED_LIBRARY, objects, output_libname,

-            output_dir, libraries, library_dirs, runtime_library_dirs,

-            export_symbols, debug, extra_preargs, extra_postargs,

-            build_temp, target_lang

-        )

-else:

-    # Build static libraries everywhere else

-    libtype = 'static'

+def sh_link_shared_object(self, objects, output_libname, 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

+):  self.link(self.SHARED_LIBRARY, objects, output_libname,

+              output_dir, libraries, library_dirs, runtime_library_dirs,

+              export_symbols, debug, extra_preargs, extra_postargs,

+              build_temp, target_lang)

-    def link_shared_object(self, objects, output_libname, 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

-    ):

-        # XXX we need to either disallow these attrs on Library instances,

-        #     or warn/abort here if set, or something...

-        #libraries=None, library_dirs=None, runtime_library_dirs=None,

-        #export_symbols=None, extra_preargs=None, extra_postargs=None,

-        #build_temp=None

+def st_link_shared_object(self, objects, output_libname, 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

+):

+    # XXX we need to either disallow these attrs on Library instances,

+    #     or warn/abort here if set, or something...

+    #libraries=None, library_dirs=None, runtime_library_dirs=None,

+    #export_symbols=None, extra_preargs=None, extra_postargs=None,

+    #build_temp=None

-        assert output_dir is None   # distutils build_ext doesn't pass this

-        output_dir,filename = os.path.split(output_libname)

-        basename, ext = os.path.splitext(filename)

-        if self.library_filename("x").startswith('lib'):

-            # strip 'lib' prefix; this is kludgy if some platform uses

-            # a different prefix

-            basename = basename[3:]

+    assert output_dir is None   # distutils build_ext doesn't pass this

+    output_dir,filename = os.path.split(output_libname)

+    basename, ext = os.path.splitext(filename)

+    if self.library_filename("x").startswith('lib'):

+        # strip 'lib' prefix; this is kludgy if some platform uses

+        # a different prefix

+        basename = basename[3:]

-        self.create_static_lib(

-            objects, basename, output_dir, debug, target_lang

-        )

+    self.create_static_lib(objects, basename, output_dir, debug, target_lang)

+if use_stubs or os.name=='nt':

+    # Build shared libraries

+    link_shared_object = sh_link_shared_object

+else:

+    # Build static libraries everywhere else (unless force_shared)

+    libtype = 'static'

+    link_shared_object = st_link_shared_object