From: Baptiste Jonglez <baptiste--git@jonglez.org>
Date: Sat, 12 Jul 2014 05:50:52 +0000 (+0900)
Subject: Print a meaningful error when -M is used but SO_MARK is not supported
X-Git-Tag: v0.86~11^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F52%2Fhead;p=thirdparty%2Fmtr.git

Print a meaningful error when -M is used but SO_MARK is not supported
---

diff --git a/mtr.c b/mtr.c
index cad2ca0..417caf6 100644
--- a/mtr.c
+++ b/mtr.c
@@ -491,6 +491,10 @@ void parse_arg (int argc, char **argv)
         exit(EXIT_FAILURE);
       }
       break;
+#else
+    case 'M':
+      fprintf( stderr, "SO_MARK not enabled.\n" );
+      break;
 #endif
     }
   }