+my $globals_inited_from_config;
+sub _init_globals_from_config {
+  return if $globals_inited_from_config;
+  $globals_inited_from_config = 1;
+
+  my $cfg = $::lx_office_conf{debug} || {};
+
+  $global_level = NONE() if $cfg->{global_level} =~ /NONE/;
+  foreach my $level (grep { $_} split(m/\s+/, $cfg->{global_level})) {
+    $global_level |= eval "${level}()";
+  }
+
+  $watch_form = $cfg->{watch_form};
+  $file_name  = $cfg->{file_name} || "/tmp/lx-office-debug.log";
+}
+