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diff --git a/tools/scons-1.2.0/engine/SCons/Tool/dvips.py b/tools/scons-1.2.0/engine/SCons/Tool/dvips.py
new file mode 100644
index 0000000..db763f1
--- /dev/null
+++ b/tools/scons-1.2.0/engine/SCons/Tool/dvips.py
@@ -0,0 +1,88 @@
+"""SCons.Tool.dvips
+
+Tool-specific initialization for dvips.
+
+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/dvips.py 3842 2008/12/20 22:59:52 scons"
+
+import SCons.Action
+import SCons.Builder
+import SCons.Tool.dvipdf
+import SCons.Util
+
+def DviPsFunction(target = None, source= None, env=None):
+    result = SCons.Tool.dvipdf.DviPdfPsFunction(PSAction,target,source,env)
+    return result
+
+def DviPsStrFunction(target = None, source= None, env=None):
+    """A strfunction for dvipdf that returns the appropriate
+    command string for the no_exec options."""
+    if env.GetOption("no_exec"):
+        result = env.subst('$PSCOM',0,target,source)
+    else:
+        result = ''
+    return result
+
+PSAction = None
+DVIPSAction = None
+PSBuilder = None
+
+def generate(env):
+    """Add Builders and construction variables for dvips to an Environment."""
+    global PSAction
+    if PSAction is None:
+        PSAction = SCons.Action.Action('$PSCOM', '$PSCOMSTR')
+
+    global DVIPSAction
+    if DVIPSAction is None:
+        DVIPSAction = SCons.Action.Action(DviPsFunction, strfunction = DviPsStrFunction)
+
+    global PSBuilder
+    if PSBuilder is None:
+        PSBuilder = SCons.Builder.Builder(action = PSAction,
+                                          prefix = '$PSPREFIX',
+                                          suffix = '$PSSUFFIX',
+                                          src_suffix = '.dvi',
+                                          src_builder = 'DVI',
+                                          single_source=True)
+
+    env['BUILDERS']['PostScript'] = PSBuilder
+    
+    env['DVIPS']      = 'dvips'
+    env['DVIPSFLAGS'] = SCons.Util.CLVar('')
+    # I'm not quite sure I got the directories and filenames right for variant_dir
+    # We need to be in the correct directory for the sake of latex \includegraphics eps included files.
+    env['PSCOM']      = 'cd ${TARGET.dir} && $DVIPS $DVIPSFLAGS -o ${TARGET.file} ${SOURCE.file}'
+    env['PSPREFIX'] = ''
+    env['PSSUFFIX'] = '.ps'
+
+def exists(env):
+    return env.Detect('dvips')