bison

[Ryan Schmidt]

On Aug 18, 2020, at 22:45, Takeshi Enomoto wrote:

> I experienced a build error probably due to the behaviour of a recent
> version of bison.
> 
> Is anyone in the list aware of the changes in bison?
> 
> I fixed udunits by using Berkeley Yacc (byacc).
> metview requires bison, so I used /usr/bin/bison to avoid errors due
> to bison 3.7.1 of MacPorts.
> I know that relying on system tools is vulnerable.
> It would be nice if the newer version of bison had a compatibility option.

Does the discussion and patch here help?

https://trac.macports.org/ticket/60978

If you can patch udunits, metview, and any others in a similar way to be compatible with bison 3.7, that would be preferable.