I resolved the problem.... The clue was in the CMakeLists.txt:
- Download and install the packet:https://github.com/zeromq/cppzmq. This will bring the zmq.hpp library and the ZeroMQconfig.cmake
- Configure the CMakeLists.txt located in the top
(${SOURCE_DIRECTORY})
. Addfind_package(ZeroMQ)
in the# Find gnuradio build dependencies
. - Configure the CMakeLists.txt located in the /lib. In
target_link_libraries
includes zmq.
Build your OOT block as normal and It will recognize the zmq sockets and will disappear the problem :)