That latest failure looked like this: 12. tools.at:556: testing ... ./tools.at:559: autoupdate --version | sed 's/.*) //;q' stdout: 2.59c ./tools.at:564: echo "AC_PREREQ(1.0)" | autoupdate - ./tools.at:567: echo "AC_PREREQ($autoupdate_version)" | autoupdate - ./tools.at:570: echo "AC_PREREQ(999.99)" | autoupdate - stderr: /tmp/au822.1499/stdin:1: error: Autoconf version 999.99 or higher is required /tmp/au822.1499/stdin:1: the top level autoupdate: failed to run /bin/m4: Invalid seek on non-seekable object This error message comes from Perl, and makes it look like the Perl system function cannot run /bin/m4. That sounds like an error in your setup somehow. Still, it is a bit odd that the other tests succeeded, whereas this one failed. Perhaps you can investigate it more? Perhaps Perl cannot run system("echo foo | /bin/m4")? _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf