tools/automake/patches/100-aclocal-skip-not-existing-directories.patch

   1 --- a/aclocal.in
   2 +++ b/aclocal.in
   3 @@ -311,7 +311,8 @@ sub scan_m4_dirs ($@)
   4      {
   5        if (! opendir (DIR, $m4dir))
   6         {
   7 -         fatal "couldn't open directory `$m4dir': $!";
   8 +         msg ('override', "warning: skipping not existing directory `$m4dir'");
   9 +         next;
  10         }
  11
  12        # We reverse the directory contents so that foo2.m4 gets