AC_CHECK_HEADERS([mntent.h sys/mnttab.h sys/vfstab.h sys/mntctl.h sys/sysctl.h fstab.h])
AC_CHECK_HEADERS([sys/uio.h sys/mkdev.h])
AC_CHECK_HEADERS([linux/magic.h])
+AC_CHECK_HEADERS([sys/prctl.h])
# check for structure fields
AC_CHECK_MEMBERS([struct stat.st_mtimensec, struct stat.st_mtim.tv_nsec, struct stat.st_atimensec, struct stat.st_atim.tv_nsec, struct stat.st_ctimensec, struct stat.st_ctim.tv_nsec])