x86-64: improve gas diagnostic when no 32-bit target is configured

Make this similar to --64 and --x32: Check whether a suitable target
exists.

diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 74b2d25238133638d048b5af4a9794d6fc32d274..690f6ee060d1865a90c5998b87faf303bda75929 100644 (file)
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -14188,7 +14188,21 @@ md_parse_option (int c, const char *arg)
 #endif
 
     case OPTION_32:
-      default_arch = "i386";
+      {
+       const char **list, **l;
+
+       list = bfd_target_list ();
+       for (l = list; *l != NULL; l++)
+         if (strstr (*l, "-i386")
+             || strstr (*l, "-go32"))
+           {
+             default_arch = "i386";
+             break;
+           }
+       if (*l == NULL)
+         as_fatal (_("no compiled in support for ix86"));
+       free (list);
+      }
       break;
 
     case OPTION_DIVIDE: