1--- a/aclocal.in 2+++ b/aclocal.in 3@@ -314,6 +314,12 @@ sub scan_m4_dirs ($@) 4 5 foreach my $m4dir (@dirlist) 6 { 7+ if (! -d $m4dir) 8+ { 9+ msg ('override', "warning: skipping not existing directory `$m4dir'"); 10+ next; 11+ } 12+ 13 if (! opendir (DIR, $m4dir)) 14 { 15 fatal "couldn't open directory `$m4dir': $!"; 16