** New macros:
* AC_CACHE_VAL to share results of tests between configure runs.
-* AC_CONFIG_AUX, AC_CANON_SYSTEM, AC_SUBST_FILE, AC_MAKE_LINKS to
+* AC_CONFIG_AUXDIR, AC_CANON_SYSTEM, AC_SUBST_FILE, AC_MAKE_LINKS to
support deciding unguessable features based on the host and target types.
* AC_CONFIG_SUBDIRS to recursively configure a source tree.
* AC_TEST_LINK which should be used instead of AC_COMPILE_CHECK, in
order to use results caching.
+* AC_ARG_ENABLE and AC_ARG_WITH make AC_ENABLE and AC_WITH obsolete.
** Changed macros:
* AC_OUTPUT adds the "automatically generated" comment after "#!" lines,