src/zmqpp/socket.cpp: In member function ‘bool zmqpp::socket::send(const string&, bool)’:
src/zmqpp/socket.cpp:122:68: warning: ‘bool zmqpp::socket::send(const string&, int)’ is deprecated [-Wdeprecated-declarations]
  return send(str, (dont_block) ? socket::dont_wait : socket::normal);
                                                                    ^
In file included from src/zmqpp/socket.cpp:24:0:
src/zmqpp/socket.hpp:292:7: note: declared here
  bool send(std::string const& string, int const flags);
       ^~~~
src/zmqpp/socket.cpp: In member function ‘bool zmqpp::socket::receive(std::__cxx11::string&, bool)’:
src/zmqpp/socket.cpp:128:71: warning: ‘bool zmqpp::socket::receive(std::__cxx11::string&, int)’ is deprecated [-Wdeprecated-declarations]
  return receive(str, (dont_block) ? socket::dont_wait : socket::normal);
                                                                       ^
In file included from src/zmqpp/socket.cpp:24:0:
src/zmqpp/socket.hpp:307:7: note: declared here
  bool receive(std::string& string, int const flags);
       ^~~~~~~
In file included from src/zmqpp/curve.cpp:17:0:
/home/conan/w/cci_PR-4487/.conan/data/zeromq/4.3.3/_/_/package/0144a3b0aceb8edb5e63295c432a8de8020ab1b7/include/zmq_utils.h:46:84: note: #pragma message: Warning: zmq_utils.h is deprecated. All its functionality is provided by zmq.h.
   "Warning: zmq_utils.h is deprecated. All its functionality is provided by zmq.h.")
                                                                                    ^
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY


CMakeFiles/test_package.dir/test_package.cpp.o: In function `main':
/home/conan/w/cci_PR-4487/1/690c45f2-13ed-4528-9609-0fe2ea825c13/recipes/zmqpp/all/test_package/test_package.cpp:6: undefined reference to `zmqpp::version()'
collect2: error: ld returned 1 exit status
make[2]: *** [bin/test_package] Error 1
make[1]: *** [CMakeFiles/test_package.dir/all] Error 2
make: *** [all] Error 2
ERROR: zmqpp/4.2.0 (test package): Error in build() method, line 12
	cmake.build()
	ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-4487/1/690c45f2-13ed-4528-9609-0fe2ea825c13/recipes/zmqpp/all/test_package/build/6dde2e951d159f9a1d31f039eac5d31189049372' '--' '-j3'