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diff --git a/engine/SCons/Tool/fortran.py b/engine/SCons/Tool/fortran.py
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+"""SCons.Tool.fortran
+
+Tool-specific initialization for a generic Posix f77/f90 Fortran compiler.
+
+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 - 2014 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/fortran.py  2014/09/27 12:51:43 garyo"
+
+import re
+
+import SCons.Action
+import SCons.Defaults
+import SCons.Scanner.Fortran
+import SCons.Tool
+import SCons.Util
+from SCons.Tool.FortranCommon import add_all_to_env, add_fortran_to_env
+
+compilers = ['f95', 'f90', 'f77']
+
+def generate(env):
+    add_all_to_env(env)
+    add_fortran_to_env(env)
+
+    fc = env.Detect(compilers) or 'f77'
+    env['SHFORTRAN'] = fc
+    env['FORTRAN'] = fc
+
+def exists(env):
+    return env.Detect(compilers)
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4: