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Re: My plans for Bison

From: Eric S. Raymond
Subject: Re: My plans for Bison
Date: Tue, 12 Feb 2019 14:29:39 -0500
User-agent: Mutt/1.9.4 (2018-02-28)

Paul Eggert <address@hidden>:
> On 2/12/19 9:34 AM, Eric S. Raymond wrote:
> > If you're willing to assume that your target platforms are compliant
> > with C99 and POSIX-1.2001 this is actually very low-risk.
> I agree, and would be happy if Bison assumed that. However, Bison's
> configure script ports among implementation variants that postdate C99 and
> POSIX-2001. For example, './configure --enable-gcc-warnings' deduces which
> GCC warning options your compiler supports, and this set of options differs
> between GCC 8 and GCC 9, or between GCC and Clang. How would the autoconf
> cleanup address these post-2001 issues?

I'm not sure yet.  We might have to rescue some part of that scripting.

A more detailed list of the post-2001 issues would be good to have.

What do we want beyond -Wall and -Wpedantic? How does it vary by version?

In any case, the first part of the job - before touching the autoconf
part of the build itself - will be ripping out a lot of obsolete #ifdefs.
                <a href="";>Eric S. Raymond</a>

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