This is flex, the fast lexical analyzer.

Read the file "INSTALL" for general installation directives.  Peek near
the beginning of the file "Makefile.in" for special DEFS values.  On most
systems, you can just run the "configure" script and type "make" to build
flex; then "make check" to test whether it built correctly; and if it did,
then "make install" to install it.

If you're feeling adventurous, you can also issue "make bigcheck" (be
prepared to wait a while). You can run the regression tests if you change to
the TESTS/ directory and issue "make" followed by "make check".

Note that flex is distributed under a copyright very similar to that of
BSD Unix, and not under the GNU General Public License (GPL).

This file is part of flex.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.

THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.

Please send bug reports and feedback to help-flex@gnu.org.

The flex distribution contains the following files which may be of interest:

README - This file.

NEWS - user visible changes between the various releases.

INSTALL - basic installation information.

COPYING - flex's copyright and license.

flex.1, flex.texi - user documentation.

RoadMap - notes for developers.

examples/ - containing examples of some possible flex scanners and a
few other things. See the file examples/README for more details.

TODO, to.do/ - outstanding bug reports, desired features, etc.

faqs/ - frequently asked questions.

tests/ - regression tests. See TESTS/README for details.