Added empty sink for wireshark sink
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index e4ed842..867dfdc 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -38,6 +38,7 @@
     misc_utils/controlled_rotator_cc_impl.cc
     misc_utils/controlled_const_source_f_impl.cc
     misc_utils/message_printer_impl.cc
+    misc_utils/wireshark_sink_impl.cc
 )
 
 add_library(gnuradio-gsm SHARED ${gsm_sources})