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This is release 2.4 of flex. See "version.h" for the exact patch-level. See the file "NEWS" to find out what is new in this Flex release. 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). Note that flex is distributed under a copyright very similar to that of BSD Unix, and not under the GNU General Public License (GPL), except for the "configure" script, which is covered by the GPL. Many thanks to the 2.4 pre-testers for finding a bunch of bugs and helping increase/test portability: Francois Pinard, Nathan Zelle, Gavin Nicol, Chris Thewalt, and Matthew Jacob. Please send bug reports and feedback to: Vern Paxson ICSD, 46A/1123 Lawrence Berkeley Laboratory 1 Cyclotron Rd. Berkeley, CA 94720 vern@ee.lbl.gov The flex distribution consists of the following files: README This message NEWS Differences between the various releases INSTALL General installation information COPYING flex's copyright configure.in, configure, Makefile.in, install.sh, mkinstalldirs elements of the "autoconf" auto-configuration process flexdef.h, parse.y, scan.l, ccl.c, dfa.c, ecs.c, gen.c, main.c, misc.c, nfa.c, sym.c, tblcmp.c, yylex.c source files version.h version of this flex release flex.skl flex scanner skeleton mkskel.sh script for converting flex.skl to C source file skel.c liballoc.c libmain.c flex library (-lfl) sources libyywrap.c initscan.c pre-flex'd version of scan.l FlexLexer.h header file for C++ lexer class flexdoc.1 full user documentation flex.1 reference documentation MISC/ a directory containing miscellaneous contributions. See MISC/README for details.