/* Unless ISL_ARG_SKIP_HELP is set, check if any of the arguments is
* equal to "--help" and if so call print_help_and_exit.
*/
-void check_help(struct isl_args *args, int argc, char **argv, void *opt,
+static void check_help(struct isl_args *args, int argc, char **argv, void *opt,
unsigned flags)
{
int i;