AC_DEFUN([gl_TIMESPEC],
[
AC_REQUIRE([AC_HEADER_TIME])
AC_CHECK_HEADERS_ONCE(sys/time.h)
gl_CHECK_TYPE_STRUCT_TIMESPEC
AC_STRUCT_ST_MTIM_NSEC
AC_REQUIRE([AC_GNU_SOURCE])
AC_CHECK_DECLS(nanosleep, , , [])
AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
[
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
AC_REQUIRE([AC_HEADER_TIME])
AC_CHECK_HEADERS_ONCE(sys/time.h)
AC_CACHE_CHECK([for struct timespec], fu_cv_sys_struct_timespec,
[AC_TRY_COMPILE(
[
],
[static struct timespec x; x.tv_sec = x.tv_nsec;],
fu_cv_sys_struct_timespec=yes,
fu_cv_sys_struct_timespec=no)
])
if test $fu_cv_sys_struct_timespec = yes; then
AC_DEFINE(HAVE_STRUCT_TIMESPEC, 1,
[Define if struct timespec is declared in <time.h>. ])
fi
])