As discussed on python-dev, don't remove Python-ast.[ch] with distclean

even though they are generated.  Since these files require Python 2.2+,
it's possible they can't be created on a fresh system.

diff --git a/Makefile.pre.in b/Makefile.pre.in
index 80fc894a6816c3104552426817433621b652d280..259cd8707a6fa51270493a287097c7a3e94731f4 100644 (file)
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -988,10 +988,10 @@ clobber: clean
 
 # Make things extra clean, before making a distribution:
 # remove all generated files, even Makefile[.pre]
+# Keep configure and Python-ast.[ch], it's possible they can't be generated
 distclean: clobber
        -rm -f core Makefile Makefile.pre buildno config.status \
                Modules/Setup Modules/Setup.local Modules/Setup.config
-       -rm -f $(AST_H) $(AST_C)
        find $(srcdir) '(' -name '*.fdc' -o -name '*~' \
                           -o -name '[@,#]*' -o -name '*.old' \
                           -o -name '*.orig' -o -name '*.rej' \