114 lines
3.6 KiB
Plaintext
114 lines
3.6 KiB
Plaintext
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This is flex, the fast lexical analyzer generator.
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flex is a tool for generating scanners: programs which recognize
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lexical patterns in text.
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More information about flex as well as the latest official release of
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flex can be found at:
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http://flex.sourceforge.net/
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Bug reports should be submitted using the SourceForge Bug Tracker for
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flex at:
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http://sourceforge.net/tracker/?group_id=97492&atid=618177
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The flex codebase is kept in git at:
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https://github.com/westes/flex
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There are several mailing lists available as well:
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flex-announce@lists.sourceforge.net - where posts will be made
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announcing new releases of flex.
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flex-help@lists.sourceforge.net - where you can post questions about
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using flex
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flex-devel@lists.sourceforge.net - where you can discuss development of
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flex itself
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Find information on subscribing to the mailing lists at:
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http://sourceforge.net/mail/?group_id=97492
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The flex distribution contains the following files which may be of interest:
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README - This file.
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NEWS - current version number and list of user-visible changes.
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INSTALL - basic installation information.
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ABOUT-NLS - description of internationalization support in flex.
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COPYING - flex's copyright and license.
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doc/ - user documentation.
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examples/ - containing examples of some possible flex scanners and a
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few other things. See the file examples/README for more details.
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TODO - outstanding bug reports, desired features, etc.
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tests/ - regression tests. See TESTS/README for details.
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po/ - internationalization support files.
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You need the following tools to build flex from the maintainer's
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repository:
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compiler suite - flex is built with gcc
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bash, or a good Bourne-style shell
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m4 - m4 -p needs to work; GNU m4 and a few others are suitable
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GNU bison; to generate parse.c from parse.y
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autoconf 2.69; for handling the build system
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automake 1.12.2; for Makefile generation
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gettext 0.18; fori18n support
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help2man 1.36; to generate the flex man page
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tar, gzip, etc.; for packaging of the source distribution
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GNU texinfo 498; to build and test the flex manual
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GNU indent 2.8; for indenting the flex source the way we want it done
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Once you have all the necessary tools installed, life becomes
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simple. To prepare the flex tree for building, run the script:
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$ ./autogen.sh
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in the top level of the flex source tree.
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This script calls the various tools needed to get flex ready for the
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GNU-style configure script to be able to work.
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From this point on, building flex follows the usual configure, make,
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make install routine.
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This file is part of flex.
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This code is derived from software contributed to Berkeley by
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Vern Paxson.
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The United States Government has rights in this work pursuant
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to contract no. DE-AC03-76SF00098 between the United States
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Department of Energy and the University of California.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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Neither the name of the University nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE.
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