Ethereal-dev: Re: [Ethereal-dev] Re: fix "parse error" with Debian's flex

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From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Fri, 11 Jul 2003 00:00:21 -0700
On Fri, Jul 11, 2003 at 01:26:18AM -0400, Greg Stark wrote:
> 2.5.31 was a massive API change.

Wonderful.

> Until ethereal is ported to the new flex, if
> ever, you could try building with the flex from the flex-old package.
> 
> How to write sane dependencies given this situation is another question.

It looks as if the offending API change in question is that the
generated lexical analyzer now calls the functions with the name implied
by the -P option, rather than giving them "yy_" names and then #defining
the -P-option names as the "yy_" names.

Unfortunately, that breaks Lemon-based parsers, as they directly call
the "yy_" functions, but there's no header file redefining them.

I guess we could put those #defines in explicitly if the the "yy_" names
aren't already #defined.