ALTZONE
# if 2 <= ALTZONE + TZ_TIME_T
# if ALTZONE
# if ALTZONE
#ifndef ALTZONE
# if ALTZONE
#if 2 <= ALTZONE + (TZ_TIME_T || !HAVE_POSIX_DECLS)
#if defined TM_GMTOFF || USG_COMPAT || ALTZONE
# if ALTZONE