AC_CHECK_HEADERS(fcntl.h sys/file.h sys/time.h sys/stat.h)
ACX_HEADER_STRING
AC_CHECK_FUNCS(glob mkstemp realpath sbrk setlocale waitpid)
-AC_CHECK_FUNCS(open lseek close)
+AC_CHECK_FUNCS(getauxval open lseek close)
AC_HEADER_DIRENT
dnl AC_CHECK_HEADERS(sys/mman.h)