Merged revisions 70910 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r70910 | tarek.ziade | 2009-03-31 17:27:23 -0500 (Tue, 31 Mar 2009) | 1 line

  #5583 Added optional Extensions in Distutils
........

Lib/distutils/extension.py

@@ -82,6 +82,9 @@ class Extension:
       language : string
         extension language (i.e. "c", "c++", "objc"). Will be detected
         from the source extensions if not provided.
+      optional : boolean
+        specifies that a build failure in the extension should not abort the
+        build process, but simply not install the failing extension.
     """
 
     # When adding arguments to this constructor, be sure to update
@@ -100,6 +103,7 @@ class Extension:
                   swig_opts = None,
                   depends=None,
                   language=None,
+                  optional=None,
                   **kw                      # To catch unknown keywords
                  ):
         assert isinstance(name, str), "'name' must be a string"
@@ -122,6 +126,7 @@ class Extension:
         self.swig_opts = swig_opts or []
         self.depends = depends or []
         self.language = language
+        self.optional = optional
 
         # If there are unknown keyword options, warn about them
         if len(kw):