Poking around with the CVS version of autoconf I've discovered that a future release will support option checking and it will generate errors if it encounters an option it doesn't know about. Unfortunately we use XE_MERGED_ARG instead of the standard API, so all of our options will fail. This patch expands XE_MERGED_ARG to register the --with and --enable forms of our options with the option checking list so that they are processed properly. This change is ignored by autoconf 2.60 and earlier and using those versions produces an copy of configure that's identical to what's currently in CVS. Malcolm ChangeLog addition: 2006-12-27 Malcolm Purvis <malcolmp(a)xemacs.org&gt; * configure.ac (XE_MERGED_ARG): Register --enable and --with forms with the option checking list. xemacs-autoconf-2.5 source patch: Diff command: cvs -q diff -u Files affected: configure.ac =================================================================== RCS Index: configure.ac =================================================================== RCS file: /pack/xemacscvs/XEmacs/xemacs/configure.ac,v retrieving revision 1.52 diff -u -r1.52 configure.ac --- configure.ac 2006/12/11 19:44:11 1.52 +++ configure.ac 2006/12/27 12:09:13 ＠＠ -252,6 +252,10 ＠＠ --without-FEATURE do not use FEATURE (same as --with-FEATURE=no) --disable-FEATURE alias for --without-FEATURE]])dnl m4_divert_once([HELP_ENABLE], m4_bpatsubst([[$2]],[--enable\([^ ]+\) ],[--with\1 ]))dnl +dnl Register both forms with the option checking list. +dnl Options are only checked with autoconf > 2.61. +m4_append_uniq([_AC_USER_OPTS], [enable_]m4_bpatsubst([$1], -, _), [:])dnl +m4_append_uniq([_AC_USER_OPTS], [with_]m4_bpatsubst([$1], -, _), [:])dnl # If --with-$1 or --without-$1 were given then copy the value to the # equivalent enable_$1 variable. if test "[${with_]m4_bpatsubst([$1], -, _)+set}" = set; then -- Malcolm Purvis <malcolmp(a)xemacs.org&gt; _______________________________________________ XEmacs-Patches mailing list XEmacs-Patches(a)xemacs.org http://calypso.tux.org/cgi-bin/mailman/listinfo/xemacs-patches