remove the </dev/null in the heart of autom4te

[Stepan Kasal]

Hello,

some time ago I noticed that autom4te calls m4 with stdin redirected
to /dev/null.  The redirection was a hack to work around a problem
with CVS m4.

The bug was discussed here
http://lists.gnu.org/archive/html/m4-discuss/2006-04/threads.html
and resolved by Eric here
http://lists.gnu.org/archive/html/m4-patches/2006-09/msg00035.html

This allowed me to remove the hack from autom4te, see the attached
patch, which I committed.

Note:

This patch was one of the two pre-requisities for teaching autom4te
to handle `-' as a command line parameter.

The other one is to tell Automake/XFile.pm about `-' about it;
I'm not volunteering for that because of Perl.  ;-)

The third step would be to tell the caching in autom4te that such
runs cannot be cached.

(And then we could implement `autoconf -'.)

Have a nice day,
        Stepan Kasal

autoconf-20061024-autom4te-int.patch
Description: Text document