diff -r 000000000000 -r ca70ae20a155 src/tools/build_utils.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/tools/build_utils.py	Tue Feb 16 10:07:05 2010 +0530
@@ -0,0 +1,65 @@
+# Copyright (c) 2009 Nokia Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import sys
+import shutil
+import win32con
+import win32api
+import zipfile
+from subprocess import call, STDOUT
+
+
+class BuildFailedException(Exception):
+    pass
+
+def deltree(top):
+    for root, dirs, files in os.walk(top, topdown=False):
+        for name in files:
+            win32api.SetFileAttributes(os.path.join(root, name),
+                                       win32con.FILE_ATTRIBUTE_NORMAL)
+            os.remove(os.path.join(root, name))
+        for name in dirs:
+            os.rmdir(os.path.join(root, name))
+    os.rmdir(top)
+
+
+def unzip_file_into_dir(file, dir):
+    if not os.path.exists(dir):
+        os.mkdir(dir, 0777)
+    zfobj = zipfile.ZipFile(file)
+    if not os.path.isdir(dir):
+        os.makedirs(dir)
+    for name in zfobj.namelist():
+        print 'Unzipping: ', os.path.abspath(os.path.join(dir, name))
+        if name.endswith('/') and \
+                 not os.path.exists(os.path.abspath(os.path.join(dir, name))):
+            os.makedirs(os.path.abspath(os.path.join(dir, name)))
+        else:
+            temp = os.path.join(os.path.abspath(dir), name)
+            if not os.path.isdir(os.path.abspath(temp)):
+                print 'Unzipping: ', os.path.abspath(temp)
+                dirname = os.path.dirname(temp)
+                if not os.path.exists(dirname):
+                    os.makedirs(dirname)
+                outfile = open(os.path.abspath(temp), 'wb')
+                outfile.write(zfobj.read(name))
+                outfile.close()
+
+
+def create_clean_env(epoc32_zip):
+    epoc_path = '\\Epoc32'
+    if os.path.exists(epoc_path):
+        shutil.rmtree(epoc_path)
+    unzip_file_into_dir(epoc32_zip, '\\')