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Re: [PATCH] Revert 'Fix logic error in _AC_PROG_LEX_YYTEXT_DECL (#109320

From: Zack Weinberg
Subject: Re: [PATCH] Revert 'Fix logic error in _AC_PROG_LEX_YYTEXT_DECL (#109320)'
Date: Thu, 16 Jul 2020 14:52:25 -0400

On Thu, Jul 16, 2020 at 2:47 PM Ross Burton <> wrote:
> On Thu, 16 Jul 2020 at 19:41, Zack Weinberg <> wrote:
> > Can we slow down a bit please?  I had written out a patch (basically
> > equivalent to what's now in trunk) and I am in the process of setting
> > up a cross-compilation environment to validate the fix for certain,
> > but this is going to take several hours.
> >
> > I believe that what's in trunk now should work fine for
> > cross-compilation of programs that don't require yywrap, even if there
> > is no target libfl, even for source tarballs that don't ship lex.yy.c,
> > as long as the flex program is available in the build environment.  If
> > that's not the scenario you're talking about, Ross, please clarify,
> > but I don't see how a tarball that doesn't ship the generated scanner
> > could ever have worked with no flex at all.
> Build-testing current master now. Will report back later: I love Yocto
> but it is annoying to work on something like autoconf as that causes a
> toolchain rebuild...

Thanks for testing.  I will proceed with my own tests in parallel.

I pushed another change but it just revises the manual section for
AC_PROG_LEX some more.


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