Add a warning to dllwrap that it is deprecated.

PR 20979
	* dllwrap.c (main): Deprecate and warn the use of dllwrap.

binutils/ChangeLog

@@ -1,3 +1,8 @@
+2020-11-20  Linda Zhang  <lindasc@qq.com>
+
+	PR 20979
+	* dllwrap.c (main): Deprecate and warn the use of dllwrap.
+
 2020-11-20  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
 
 	* testsuite/binutils-all/readelf-maskos-1a.d: Fix test for unrecognized

binutils/dllwrap.c

@@ -639,6 +639,9 @@ main (int argc, char **argv)
   bindtextdomain (PACKAGE, LOCALEDIR);
   textdomain (PACKAGE);
 
+  warn (_("WARNING: %s is deprecated, use gcc -shared or ld -shared instead\n"),
+	prog_name);
+
   expandargv (&argc, &argv);
 
   saved_argv = (char **) xmalloc (argc * sizeof (char*));