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diff --git a/tools/scons-1.2.0/engine/SCons/Tool/nasm.py b/tools/scons-1.2.0/engine/SCons/Tool/nasm.py
new file mode 100644
index 0000000..db5c107
--- /dev/null
+++ b/tools/scons-1.2.0/engine/SCons/Tool/nasm.py
@@ -0,0 +1,66 @@
+"""SCons.Tool.nasm
+
+Tool-specific initialization for nasm, the famous Netwide Assembler.
+
+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/nasm.py 3842 2008/12/20 22:59:52 scons"
+
+import SCons.Defaults
+import SCons.Tool
+import SCons.Util
+
+ASSuffixes = ['.s', '.asm', '.ASM']
+ASPPSuffixes = ['.spp', '.SPP', '.sx']
+if SCons.Util.case_sensitive_suffixes('.s', '.S'):
+    ASPPSuffixes.extend(['.S'])
+else:
+    ASSuffixes.extend(['.S'])
+
+def generate(env):
+    """Add Builders and construction variables for nasm to an Environment."""
+    static_obj, shared_obj = SCons.Tool.createObjBuilders(env)
+
+    for suffix in ASSuffixes:
+        static_obj.add_action(suffix, SCons.Defaults.ASAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+
+    for suffix in ASPPSuffixes:
+        static_obj.add_action(suffix, SCons.Defaults.ASPPAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+
+    env['AS']        = 'nasm'
+    env['ASFLAGS']   = SCons.Util.CLVar('')
+    env['ASPPFLAGS'] = '$ASFLAGS'
+    env['ASCOM']     = '$AS $ASFLAGS -o $TARGET $SOURCES'
+    env['ASPPCOM']   = '$CC $ASPPFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -c -o $TARGET $SOURCES'
+
+def exists(env):
+    return env.Detect('nasm')