On 20 Oct 2022 09:32, Tsukasa OI wrote:
> Clang generates a warning if there is a function declaration/definition
> with zero arguments. Such declarations/definitions without a prototype (an
> argument list) are deprecated forms of indefinite arguments
> ("-Wdeprecated-non-prototype"). On the default configuration, it causes a
> build failure (unless "--disable-werror" is specified).
> 
> Such getrusage function declarations are placed in three files under sim/ppc
> and to avoid defining those on the modern environments, this commit will
> make the configuration script to find the known declaration of getrusage
> and defines HAVE_DECL_GETRUSAGE if it finds one.
> 
> If we find one (and we *will* in most modern environments), we don't need
> to rely on the deprecated declarations.
> ---
>  sim/config.h.in  |  4 ++++
>  sim/configure    | 32 ++++++++++++++++++++++++++++++++
>  sim/configure.ac | 10 ++++++++++
>  3 files changed, 46 insertions(+)

you didn't actually fix the bad prototypes in the ppc code -- just delete them.
pretty sure once you do, you won't need any of these changes.
-mike