[Octave-bug-tracker] [bug #55613] Build failure with bison 3.3.1

[Rik]

Follow-up Comment #4, bug #55613 (project octave):

Bison 3.0 release date was Sept. 2015.  That probably means there are some
really long-term releases that are still running versions less than 3.0, but
everybody else should be fine.

There is an explicit workaround in the release notes for Bison 3.3


*** More POSIX Yacc compatibility warnings

  More Bison specific directives are now reported with -y or -Wyacc.  This
  change was ready since the release of Bison 3.0 in September 2015.  It was
  delayed because Autoconf used to define YACC as `bison -y`, which resulted
  in numerous warnings for Bison users that use the GNU Build System.

  If you still experience that problem, either redefine YACC as `bison -o
  y.tab.c`, or pass -Wno-yacc to Bison.




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