Re: [PATCH 8/9] autoconf: Check for timer_settime

> This function will be used in a following commit.
> 
> The timer_settime function is provided in librt on some systems. We
> already use this library sometimes to get clock_gettime, so rework the
> logic so we don't link with it twice.
> 
> This function was not previously used by git. This can cause trouble for
> people on systems without timer_settime if they only rely on
> config.mak.uname. They will need to set NO_TIMER_SETTIME manually.
> 
> Add proper replacement function macros for setitimer and timer_settime
> that evaluates the arguments and fails with ENOSYS to simulate stub
> implementations. This will be useful in a following commit.
> 
> Signed-off-by: Jonas 'Sortie' Termansen <sortie@maxsi.org>
> 
> ---
> 
> This patch can be improved by finding out which systems doesn't have
> timer_settime and adding entries for them to config.mak.uname.
> 
>  Makefile          | 21 +++++++++++++++++++++
>  config.mak.uname  |  3 +++
>  configure.ac      |  8 ++++++++
>  git-compat-util.h |  8 +++++++-
>  4 files changed, 39 insertions(+), 1 deletion(-)
> 
> diff --git a/Makefile b/Makefile
> index 66329e4..5609e44 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -182,16 +182,22 @@ all::
>  #
>  # Define NO_SETITIMER if you don't have setitimer()
>  #
> +# Define NO_TIMER_SETTIME if you don't have timer_settime()
> +#
>  # Define NO_TIMER_T if you don't have timer_t.
> +# This also implies NO_SETITIMER