Make it more apparent that archive creation is not supported

1 files changed, 10 insertions, 6 deletions

diff --git a/archival/ar.c b/archival/ar.c
index b058b9ec1..44c5db035 100644
--- a/archival/ar.c
+++ b/archival/ar.c
@@ -50,11 +50,12 @@ static void header_verbose_list_ar(const file_header_t *file_header)
         printf("%s %d/%d%7d %s %s\n", &mode[1], file_header->uid, file_header->gid, (int) file_header->size, &mtime[4], file_header->name);
 }
 
-#define AR_CTX_PRINT    1
-#define AR_CTX_LIST             2
-#define AR_CTX_EXTRACT  4
-#define AR_OPT_PRESERVE_DATE    8
-#define AR_OPT_VERBOSE                  16
+#define AR_CTX_PRINT                    0x01
+#define AR_CTX_LIST                             0x02
+#define AR_CTX_EXTRACT                  0x04
+#define AR_OPT_PRESERVE_DATE    0x08
+#define AR_OPT_VERBOSE                  0x10
+#define AR_OPT_CREATE                   0x20
 
 extern int ar_main(int argc, char **argv)
 {
@@ -65,7 +66,7 @@ extern int ar_main(int argc, char **argv)
         archive_handle = init_handle();
 
         bb_opt_complementaly = "p~tx:t~px:x~pt";
-        opt = bb_getopt_ulflags(argc, argv, "ptxov");
+        opt = bb_getopt_ulflags(argc, argv, "ptxovc");
 
         if ((opt & 0x80000000UL) || (optind == argc)) {
                 bb_show_usage();
@@ -86,6 +87,9 @@ extern int ar_main(int argc, char **argv)
         if (opt & AR_OPT_VERBOSE) {
                 archive_handle->action_header = header_verbose_list_ar;
         }
+        if (opt & AR_OPT_CREATE) {
+                bb_error_msg_and_die("Archive creation not supported.  Install binutils 'ar'.");
+        }
 
         archive_handle->src_fd = bb_xopen(argv[optind++], O_RDONLY);