Always clobber all of the output directory

tools/clean_output_directory.py

 #!/usr/bin/env python
 #
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 #
 
 import optparse
 import shutil
 import sys
 import utils
 
 HOST_OS = utils.GuessOS()
 
 def BuildOptions():
   result = optparse.OptionParser()
   result.add_option("-m", "--mode",

[ahe, 2012/11/15 11:42:21]

This option is no longer necessary.

       help='Build variants (comma-separated).',
       metavar='[all,debug,release]',
       default='all')
   result.add_option("--arch",

[ahe, 2012/11/15 11:42:21]

Ditto.

       help='Target architectures (comma-separated).',
       metavar='[all,ia32,x64,simarm,arm]',
       default='all')
   result.add_option("--os",
     help='Target OSs (comma-separated).',
     metavar='[all,host,android]',
     default='all')
   return result
 
 
@@ skipping 28 matching lines @@
       return False
   return True
 
 def Main():
   parser = BuildOptions()
   (options, args) = parser.parse_args()
   if not ProcessOptions(options):
     parser.print_help()
     return 1
 
-  # Delete the output for the targets for each requested configuration.
-  for mode in options.mode:
-    for arch in options.arch:
-      for target_os in options.os:
-        build_root = utils.GetBuildRoot(
-            HOST_OS, mode=mode, arch=arch, target_os=target_os)
-        print "Deleting %s" % (build_root)
-        shutil.rmtree(build_root, ignore_errors=True)
+  build_root = utils.GetBuildDir(HOST_OS, None)

[ahe, 2012/11/15 11:42:21]

for target_os in options.os:
  build_root = utils.GetBuildDir(HOST_OS, target_os)
  print "Deleting %s" % (build_root)
  shutil.rmtree(build_root, ignore_errors=True)

+  shutil.rmtree(build_root, ignore_errors=True)
   return 0
 
 if __name__ == '__main__':
   sys.exit(Main())