sim: erc32: ignore --sysroot that gdb passes down

sim/erc32/ChangeLog

@@ -1,3 +1,7 @@
+2011-06-09  Mike Frysinger  <vapier@gentoo.org>
+
+	* interf.c (sim_open): Accept and ignore `--sysroot=...'.
+
 2011-06-01  Joel Brobecker  <brobecker@adacore.com>
 
 	* interf.c (sim_complete_command): New stub function.

sim/erc32/interf.c

@@ -234,6 +234,9 @@ sim_open (kind, callback, abfd, argv)
 		if ((stat + 1) < argc) {
 		    freq = strtol(argv[++stat], (char **)NULL, 0);
 		}
+	    } else
+	    if (strncmp(argv[stat], "--sysroot=", sizeof("--sysroot=") - 1) == 0) {
+		/* Ignore until we start to support this.  */
 	    } else {
 		(*sim_callback->printf_filtered) (sim_callback,
 						  "unknown option %s\n",