| This is flex, the fast lexical analyzer generator. |
| |
| flex is a tool for generating scanners: programs which recognize |
| lexical patterns in text. |
| |
| More information about flex as well as the latest official release of |
| 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 |
| flex at: |
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| http://sourceforge.net/tracker/?group_id=97492&atid=618177 |
| |
| 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 |
| announcing new releases of flex. |
| |
| flex-help@lists.sourceforge.net - where you can post questions about |
| using flex |
| |
| flex-devel@lists.sourceforge.net - where you can discuss development of |
| flex itself |
| |
| Find information on subscribing to the mailing lists at: |
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| http://sourceforge.net/mail/?group_id=97492 |
| |
| 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. |
| |
| examples/ - containing examples of some possible flex scanners and a |
| few other things. See the file examples/README for more details. |
| |
| TODO - outstanding bug reports, desired features, etc. |
| |
| tests/ - regression tests. See TESTS/README for details. |
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| po/ - internationalization support files. |
| |
| You need the following tools to build flex from the maintainer's |
| repository: |
| |
| compiler suite - flex is built with gcc |
| bash, or a good Bourne-style shell |
| m4 - m4 -p needs to work; GNU m4 and a few others are suitable |
| GNU bison; to generate parse.c from parse.y |
| autoconf 2.69; for handling the build system |
| automake 1.12.2; for Makefile generation |
| gettext 0.18; fori18n support |
| help2man 1.36; to generate the flex man page |
| tar, gzip, etc.; for packaging of the source distribution |
| GNU texinfo 498; to build and test the flex manual |
| GNU indent 2.8; for indenting the flex source the way we want it done |
| |
| Once you have all the necessary tools installed, life becomes |
| simple. To prepare the flex tree for building, run the script: |
| |
| $ ./autogen.sh |
| |
| in the top level of the flex source tree. |
| This script calls the various tools needed to get flex ready for the |
| GNU-style configure script to be able to work. |
| |
| From this point on, building flex follows the usual configure, make, |
| make install routine. |
| |
| This file is part of flex. |
| |
| This code is derived from software contributed to Berkeley by |
| Vern Paxson. |
| |
| The United States Government has rights in this work pursuant |
| to contract no. DE-AC03-76SF00098 between the United States |
| Department of Energy and the University of California. |
| |
| 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. |
| |
| |