Make string and char pointers comparable

gcc/elna-spec.cc

@@ -1,3 +1,20 @@
+/* elna-spec.c -- Specific flags and argument handling of the Elna front end.
+   Copyright (C) 2025 Free Software Foundation, Inc.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
 void
 lang_specific_driver (struct cl_decoded_option ** /* in_decoded_options */,
 		      unsigned int * /* in_decoded_options_count */,