On OpenIndiana, Perl file locking does not work atop NFS.
* tests/tools.at (autom4te cache locking):
Expect this test to file if Perl file locking does not work.
AT_SETUP([autom4te cache locking])
+# Expect this test to fail if Perl file locking does not work.
+AT_XFAIL_IF([$PERL -I "$top_srcdir/lib" -e '
+ use Autom4te::XFile;
+ my $fh = new Autom4te::XFile "lockfile", O_RDWR|O_CREAT;
+ flock ($fh, LOCK_EX) && exit 1;
+ '])
+
# Cannot use AT_CHECK here, autotest internals could be messed up.
(echo AC_INIT; sleep 2; echo) \