-#serial 19
+#serial 20
dnl This macro is intended to be used solely in this file.
dnl These are the prerequisite macros for GNU's strftime.c replacement.
AC_TYPE_MBSTATE_T
AC_REQUIRE([gl_TM_GMTOFF])
+ AC_REQUIRE([gl_FUNC_TZSET_CLOBBER])
])
dnl From Jim Meyering.