Officially, the operating system that was available on that Mac at the time that you bought it is the oldest version of macOS that can run on that Mac. It's likely that an older OS won't include.
The history of macOS, Apple's current Mac operating system originally named Mac OS X until 2012 and then OS X until 2016, began with the company's project to replace its 'classic' Mac OS.That system, up to and including its final release Mac OS 9, was a direct descendant of the operating system Apple had used in its Macintosh computers since their introduction in 1984. GNU Bison Introduction to Bison. Bison is a general-purpose parser generator that converts an annotated context-free grammar into a deterministic LR or generalized LR (GLR) parser employing LALR(1) parser tables. As an experimental feature, Bison can also generate IELR(1) or canonical LR(1) parser tables. Once you are proficient with Bison, you. Go to the Bison page and download the latest version of Bison. Extract the compressed file to a somewhat permanent location on your machine (e.g. Build the Bison Binary Open a terminal window and navigate to the folder you setup in the download step.
Bison is a general-purpose parser generator that converts an annotated context-free grammar into a deterministic LR or generalized LR (GLR) parser employing LALR(1) parser tables. As an experimental feature, Bison can also generate IELR(1) or canonical LR(1) parser tables. Once you are proficient with Bison, you can use it to develop a wide range of language parsers, from those used in simple desk calculators to complex programming languages.
Bison is upward compatible with Yacc: all properly-written Yacc grammars ought to work with Bison with no change. Anyone familiar with Yacc should be able to use Bison with little trouble. You need to be fluent in C or C++ programming in order to use Bison. Java is also supported as an experimental feature.
Bisoncan be found on the main GNU ftp server:http://ftp.gnu.org/gnu/bison/(via HTTP) andftp://ftp.gnu.org/gnu/bison/(via FTP). It can also be foundon the GNU mirrors;pleaseusea mirror if possible.
Documentation forBisonis available online, asis documentation for most GNU software. You mayalso find more information aboutBisonby runninginfo bisonorman bison,or by looking at/usr/share/doc/bison/,/usr/local/doc/bison/,or similar directories on your system. A brief summary is available byrunning bison --help.
Bisonhas the following mailing lists:
Announcements aboutBisonand most other GNU software are made oninfo-gnu(archive).
Security reports that should not be made immediately public can besent directly to the maintainer. If there is no response to an urgentissue, you can escalate to the generalsecuritymailing list for advice.
Development ofBison,and GNU in general, is a volunteer effort, and you can contribute. Forinformation, please read How to help GNU. If you'dlike to get involved, it's a good idea to join the discussion mailinglist (see above).
Bisonis free software; you can redistribute it and/or modify it under theterms of the GNU General Public License as published by the FreeSoftware Foundation; either version 3 of the License, or (at youroption) any later version.