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| author | Jim Meyering <jim@meyering.net> | 2002-07-17 10:47:46 +0000 |
|---|---|---|
| committer | Jim Meyering <jim@meyering.net> | 2002-07-17 10:47:46 +0000 |
| commit | 15b923a271eb54b7b07864b301a31d26f851f10b (patch) | |
| tree | 7b516b56c66204e8399b14f2d51bff90cad930fc /m4/boottime.m4 | |
| parent | 6080be67012dd10f6373edbf53f14309506e8448 (diff) | |
| download | coreutils-15b923a271eb54b7b07864b301a31d26f851f10b.tar.xz | |
New file. Extracted from sh-utils' configure.ac
and extended to work also with *BSD systems.
Diffstat (limited to 'm4/boottime.m4')
| -rw-r--r-- | m4/boottime.m4 | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/m4/boottime.m4 b/m4/boottime.m4 new file mode 100644 index 000000000..e4f405483 --- /dev/null +++ b/m4/boottime.m4 @@ -0,0 +1,37 @@ +# Determine whether this system has infrastructure for obtaining the boot time. + +# GNULIB_BOOT_TIME([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) +* ---------------------------------------------------------- +AC_DEFUN([GNULIB_BOOT_TIME], +[ + AC_CHECK_FUNCS(sysctl) + AC_CHECK_HEADERS(sys/sysctl.h) + AC_CACHE_CHECK( + [whether we can get the system boot time], + [gnulib_cv_have_boot_time], + [ + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( +[AC_INCLUDES_DEFAULT +#if HAVE_SYSCTL && HAVE_SYS_SYSCTL_H +# include <sys/param.h> /* needed for OpenBSD 3.0 */ +# include <sys/sysctl.h> +#endif +#ifdef HAVE_UTMPX_H +# include <utmpx.h> +#else +# include <utmp.h> +#endif +], +[[ +#if defined BOOT_TIME || (defined CTL_KERN && defined KERN_BOOTTIME) +/* your system *does* have the infrastructure to determine boot time */ +#else +please_tell_us_how_to_determine_boot_time_on_your_system +#endif +]])], + gnulib_cv_have_boot_time=yes, + gnulib_cv_have_boot_time=no) + ]) + AS_IF([test $gnulib_cv_have_boot_time = yes], [$1], [$2]) +]) |