Bison builds some pre-existing parser software into your program.
Two of the parsers included with this program are covered by the GNU General
Public License (the GPL). Thus, they can only be built into programs that are
themselves covered by the GPL. Fortunately, there are two other parsers
that are covered by a much less restrictive license.

The files /usr/lib/bison.simple and /usr/lib/bison.hairy contain the parsers
that are covered by the GPL, and are documented in the bison(1) manual page
and in an info file that can be read with the command "info bison".

The parsers with the less restrictive license are generated by the "mkparser"
and "mkparserclass" commands, and are part of the Debian "bison-parsers"
package. "mkparser" generates a C parser, and "mkparserclass" generates a
C++ class containing a parser. The documentation on these parsers can be found
in /usr/doc/bison-parsers/parser.doc.gz and
/usr/doc/bison-parsers/parserclass.doc.gz .

For license information, read the file /usr/doc/copyright/bison, and
/usr/doc/copyright/bison-parsers . The full text of the GPL is in
/usr/doc/copyright/GPL.
