Re: compiler warnings on AIX and Solaris

[Denis Ovsienko via tcpdump-workers <tcpdump-workers () lists tcpdump org>]

> --- Begin Message ---
>
>
> From: Denis Ovsienko <denis () ovsienko info>
>
> Date: Sun, 25 Jul 2021 13:14:18 +0100
>
> On Sat, 24 Jul 2021 10:55:19 -0700
> Guy Harris <gharris () sonic net> wrote:
>
> [...]
>
> > If there's a way to force XL C to treat it as a hard error, we need
> > to update the AC_LBL_CHECK_UNKNOWN_WARNING_OPTION_ERROR autoconf
> > macro to set the compiler up to use it when testing whether compiler
> > options are supported.
> >
> > If there *isn't* a way to do that, the configure-script test also
> > needs to scan the standard error of the compilation and look for the
> > warning, and treat that as an indication of lack of support as well.
> > (I think the equivalent test provided as part of CMake may already do
> > that.)
>
> The current master branch produces a much cleaner output for "make -s"
> with XL C, thank you!
>
> -- 
>     Denis Ovsienko
>
> --- End Message ---
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