Re: [PATCH v2] meson: Avoid implicit declaration of functions

[Peter Maydell]

On Mon, 29 May 2023 at 15:13, Michal Privoznik <mprivozn@redhat.com> wrote:
>
> While detecting a presence of a function via 'cc.links()'
> gives desired result (i.e. detects whether function is present),
> it also produces a warning on systems where the function is not
> present (into meson-log.txt), e.g.:
>
>   qemu.git/build/meson-private/tmph74x3p38/testfile.c:2:34: \
>   warning: implicit declaration of function 'malloc_trim' 
> [-Wimplicit-function-declaration]

You should say why this matters, because in general warnings
in meson-log.txt are normal and expected. The only reason
we care about these particular warnings is because some
downstream distros are parsing logs for 'implicit declaration
of function' warnings as part of the "modern C" transition.

thanks
-- PMM