-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 According to Eric Blake on 3/23/2008 6:20 PM: | Rather, Autoconf 2.59 was relying on an M4 bug, which has since been | patched in autoconf: | http://git.sv.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=814d1a1 The more relevant patch is: http://git.sv.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=66931ce | | However, the m4 patch mentioned above also mentions a way to restore the | older m4 behavior, in examples/wraplifo.m4. Modulo quoting differences, | this could be used to guarantee correct autoconf 2.59 behavior on those | projects that are not yet ready to upgrade. So, for example, you could submit a patch to gcc to add this to configure.ac (or one of the files it includes), prior to calling AC_INIT: # As long as we aren't ready to upgrade to autoconf 2.60, # make sure that newer M4 will still use LIFO order: m4_define([arg1], [$1])dnl m4_define([m4_wrap], [m4_if([_$0_text], ~ [m4_define([_$0_text], [$1]m4_defn([_$0_text]))], ~ [m4_builtin([m4wrap], ~ [arg1(m4_defn([_$0_text])m4_undefine([_$0_text]))])dnl m4_define([_$0_text], [$1])])])dnl - -- Don't work too hard, make some time for fun as well! Eric Blake ebb9@xxxxxxx -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkfm+hkACgkQ84KuGfSFAYBZcACgscwBQntrSU/OSxYdja4RDOvc NgAAn1FhUyC7uLZZFjySEaBn26rk1SMB =fKfH -----END PGP SIGNATURE----- _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
