mirror of
https://github.com/coreutils/coreutils.git
synced 2025-01-07 08:33:23 +08:00
40 lines
1.0 KiB
Plaintext
40 lines
1.0 KiB
Plaintext
#serial 2
|
|
|
|
dnl From Jim Meyering.
|
|
dnl Check for the nanosleep function.
|
|
dnl If not found, use the supplied replacement.
|
|
dnl
|
|
|
|
AC_DEFUN(jm_FUNC_NANOSLEEP,
|
|
[
|
|
# Solaris 2.5.1 needs -lposix4 to get the nanosleep function.
|
|
# Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
|
|
AC_SEARCH_LIBS(nanosleep, [rt posix4])
|
|
|
|
AC_CACHE_CHECK([whether nanosleep works],
|
|
jm_cv_func_nanosleep_works,
|
|
[AC_TRY_RUN([
|
|
# include <time.h>
|
|
|
|
int
|
|
main ()
|
|
{
|
|
struct timespec ts_sleep, ts_remaining;
|
|
ts_sleep.tv_sec = 0;
|
|
ts_sleep.tv_nsec = 1;
|
|
exit (nanosleep (&ts_sleep, &ts_remaining) == 0 ? 0 : 1);
|
|
}
|
|
],
|
|
jm_cv_func_nanosleep_works=yes,
|
|
jm_cv_func_nanosleep_works=no,
|
|
dnl When crosscompiling, assume the worst.
|
|
jm_cv_func_nanosleep_works=yes)
|
|
])
|
|
if test $jm_cv_func_nanosleep_works = no; then
|
|
AC_SUBST(LIBOBJS)
|
|
LIBOBJS="$LIBOBJS nanosleep.$ac_objext"
|
|
AC_DEFINE_UNQUOTED(nanosleep, gnu_nanosleep,
|
|
[Define to gnu_nanosleep if the replacement function should be used.])
|
|
fi
|
|
])
|