Re: [Flex-help] yyget_lineno missing in lex.yy.c

[Will E. <wes...@gm...>]

I have a vague memory that there was some cleanup regarding lex compatibility, but short of git bisect or re-reading the NEWS file, I couldn't tell you when that was.

On Wednesday,  6 July 2016,  6:40 pm -0400, John Gibson <joh...@gm...> wrote:

> Thanks, Will. 
> 
> I don't have Ubuntu, so I'm just going off info I got from the user. We've been using yyget_lineno and friends for a while. It certainly works in 2.5.35 using the -l flag. 
> 
> I'll ask my colleagues about losing lex compat. mode. Not sure whether this is still really necessary for us. The original code for this project does date from the mid'80s, though. ;-)
> 
> John
> 
> 
> > On Jul 6, 2016, at 6:22 PM, Will Estes <wes...@gm...> wrote:
> > 
> > You said Ubuntu 16.04 includes flex 2.5.4? That's ancient and the tokens you mention weren't added till after 2.5.4.
> > 
> > Is that right, though? Seems odd that Ubuntu would be shipping that old version of flex.
> > 
> > But the lex compatibility mode is your problem. The tokens you list are not a part of "lex"; they're a part of "flex". That is, they're in the list of things that gets left out if you say you want "lex".
> > 
> >> On Wednesday,  6 July 2016,  3:13 pm -0400, John Gibson <joh...@gm...> wrote:
> >> 
> >> Hi,
> >> 
> >> The project I work with (https://github.com/rtcmix/rtcmix) embeds a lexer built with flex. This builds correctly using flex 2.5.35 (macOS) and all previous versions. We use the lex compatibility mode flag (-l).
> >> 
> >> Recently, we received a report from a user on Ubuntu 16.04, which includes flex 2.5.4, about not being able to build our software. The problem is that the yyget_lineno, yyset_lineno, and yylex_destroy functions are not included in the lex.yy.c file generated by flex 2.5.4. Adding "%option yylineno" at the top of our .l file did not help -- not surprisingly, since the docs say that lex compat. mode already implies %option yylineno. We use no other options.
> >> 
> >> Is there something simple that I'm missing here? Has something changed that requires us to compile differently than we've had to before? Or is there something missing in this user's installation?
> >> 
> >> Thanks much,
> >> John
> >> 
> >> 
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> > Will Estes
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-- 
Will Estes
Flex Project Maintainer
wes...@gm...
https://github.com/westes/flex