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diff --git a/tools/scons-1.2.0/engine/SCons/Tool/jar.py b/tools/scons-1.2.0/engine/SCons/Tool/jar.py
new file mode 100644
index 0000000..be50b01
--- /dev/null
+++ b/tools/scons-1.2.0/engine/SCons/Tool/jar.py
@@ -0,0 +1,104 @@
+"""SCons.Tool.jar
+
+Tool-specific initialization for jar.
+
+There normally shouldn't be any need to import this module directly.
+It will usually be imported through the generic SCons.Tool.Tool()
+selection method.
+
+"""
+
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "src/engine/SCons/Tool/jar.py 3842 2008/12/20 22:59:52 scons"
+
+import SCons.Subst
+import SCons.Util
+
+def jarSources(target, source, env, for_signature):
+    """Only include sources that are not a manifest file."""
+    try:
+        env['JARCHDIR']
+    except KeyError:
+        jarchdir_set = False
+    else:
+        jarchdir_set = True
+        jarchdir = env.subst('$JARCHDIR', target=target, source=source)
+        if jarchdir:
+            jarchdir = env.fs.Dir(jarchdir)
+    result = []
+    for src in source:
+        contents = src.get_contents()
+        if contents[:16] != "Manifest-Version":
+            if jarchdir_set:
+                _chdir = jarchdir
+            else:
+                try:
+                    _chdir = src.attributes.java_classdir
+                except AttributeError:
+                    _chdir = None
+            if _chdir:
+                # If we are changing the dir with -C, then sources should
+                # be relative to that directory.
+                src = SCons.Subst.Literal(src.get_path(_chdir))
+                result.append('-C')
+                result.append(_chdir)
+            result.append(src)
+    return result
+
+def jarManifest(target, source, env, for_signature):
+    """Look in sources for a manifest file, if any."""
+    for src in source:
+        contents = src.get_contents()
+        if contents[:16] == "Manifest-Version":
+            return src
+    return ''
+
+def jarFlags(target, source, env, for_signature):
+    """If we have a manifest, make sure that the 'm'
+    flag is specified."""
+    jarflags = env.subst('$JARFLAGS', target=target, source=source)
+    for src in source:
+        contents = src.get_contents()
+        if contents[:16] == "Manifest-Version":
+            if not 'm' in jarflags:
+                return jarflags + 'm'
+            break
+    return jarflags
+
+def generate(env):
+    """Add Builders and construction variables for jar to an Environment."""
+    SCons.Tool.CreateJarBuilder(env)
+
+    env['JAR']        = 'jar'
+    env['JARFLAGS']   = SCons.Util.CLVar('cf')
+    env['_JARFLAGS']  = jarFlags
+    env['_JARMANIFEST'] = jarManifest
+    env['_JARSOURCES'] = jarSources
+    env['_JARCOM']    = '$JAR $_JARFLAGS $TARGET $_JARMANIFEST $_JARSOURCES'
+    env['JARCOM']     = "${TEMPFILE('$_JARCOM')}"
+    env['JARSUFFIX']  = '.jar'
+
+def exists(env):
+    return env.Detect('jar')