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]
  122 |  return send(str, (dont_block) ? socket::dont_wait : socket::normal);
      |                                                                    ^
In file included from src/zmqpp/socket.cpp:24:
src/zmqpp/socket.hpp:292:7: note: declared here
  292 |  bool send(std::string const& string, int const flags);
      |       ^~~~
src/zmqpp/socket.cpp: In member function ‘bool zmqpp::socket::receive(std::string&, bool)’:
src/zmqpp/socket.cpp:128:71: warning: ‘bool zmqpp::socket::receive(std::string&, int)’ is deprecated [-Wdeprecated-declarations]
  128 |  return receive(str, (dont_block) ? socket::dont_wait : socket::normal);
      |                                                                       ^
In file included from src/zmqpp/socket.cpp:24:
src/zmqpp/socket.hpp:307:7: note: declared here
  307 |  bool receive(std::string& string, int const flags);
      |       ^~~~~~~
In file included from src/zmqpp/curve.cpp:17:
/home/conan/w/cci_PR-4487/.conan/data/zeromq/4.3.3/_/_/package/3957ad2ac4dda411e720b4251429e02c81874fc4/include/zmq_utils.h:46:84: note: #pragma message: Warning: zmq_utils.h is deprecated. All its functionality is provided by zmq.h.
   46 |   "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


/usr/bin/ld: CMakeFiles/test_package.dir/test_package.cpp.o: in function `main':
test_package.cpp:(.text.startup+0x24): undefined reference to `zmqpp::version()'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/test_package.dir/build.make:103: bin/test_package] Error 1
make[1]: *** [CMakeFiles/Makefile2:95: CMakeFiles/test_package.dir/all] Error 2
make: *** [Makefile:103: 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-4487/1/1fa49be1-a5eb-4cb2-af73-c2782c5c239f/recipes/zmqpp/all/test_package/build/39ace6d7052b13d308e43a921b15acb08c07b229' '--' '-j3'