Re: [PATCH 1/3] configure.ac: check 'tv_nsec' field in 'struct stat'

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On Thu, Jan 8, 2015 at 3:00 PM, Reuben Hawkins <reubenhwk@xxxxxxxxx> wrote:
> Detect 'tv_nsec' field in 'struct stat' and set Makefile variable
> NO_NSEC appropriately.
>
> A side-effect of the above detection is that we also determine
> whether 'stat.st_mtimespec' is available, so, as a bonus, set the
> Makefile variable USE_ST_TIMESPEC, as well.
>
> Signed-off-by: Reuben Hawkins <reubenhwk@xxxxxxxxx>

These patches may or may not deserve a Helped-by:.

With or without the Helped-by: and the minor style fix-up below...

Reviewed-by: Eric Sunshine <sunshine@xxxxxxxxxxxxxx>

Thanks for the perseverance.

For convenience of other reviewers: This is v3. v1 through v3 are
threaded together here:
http://thread.gmane.org/gmane.comp.version-control.git/261619

> ---
> diff --git a/configure.ac b/configure.ac
> index 6af9647..210eb4e 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -754,6 +754,19 @@ AC_CHECK_TYPES([struct itimerval],
>  [#include <sys/time.h>])
>  GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL])
>  #
> +# Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists.
> +# Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor
> +# stat.st_mtimespec.tv_nsec exists.
> +AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec])
> +AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec])
> +if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes ; then

Style: For consistency with all other 'if' conditionals in
configure.ac, drop the space before the semicolon.

> +       USE_ST_TIMESPEC=YesPlease
> +       GIT_CONF_SUBST([USE_ST_TIMESPEC])
> +elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes ; then

Ditto.

> +       NO_NSEC=YesPlease
> +       GIT_CONF_SUBST([NO_NSEC])
> +fi
> +#
>  # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
>  AC_CHECK_MEMBER(struct dirent.d_ino,
>  [NO_D_INO_IN_DIRENT=],
> --
> 2.2.0.68.g8f72f0c.dirty
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