All global variables in main should start with g_

src/main.c

@@ -1685,7 +1685,7 @@ int main(int argc, char *argv[])
     init_server_name(argc, (const char **)argv);
     start_civetweb(argc, argv);
     printf("%s started on port(s) %s with web root [%s]\n",
-           g_server_name, mg_get_option(ctx, "listening_ports"),
+           g_server_name, mg_get_option(g_ctx, "listening_ports"),
            mg_get_option(g_ctx, "document_root"));
     while (g_exit_flag == 0) {
         sleep(1);