Failing to build example for Mac

[dhruvkakadiya]

Trying nakama-cpp client SDK for Mac and it's failing to build.

Undefined symbols for architecture x86_64:
  "_CFErrorCopyDescription", referenced from:
      (anonymous namespace)::getSSLErrorDescription(int) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_CFErrorCreate", referenced from:
      (anonymous namespace)::getSSLErrorDescription(int) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_CFRelease", referenced from:
      ix::SocketAppleSSL::close() in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
      (anonymous namespace)::getSSLErrorDescription(int) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_CFStringGetCString", referenced from:
      (anonymous namespace)::getSSLErrorDescription(int) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_CFStringGetSystemEncoding", referenced from:
      (anonymous namespace)::getSSLErrorDescription(int) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_SSLClose", referenced from:
      ix::SocketAppleSSL::close() in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_SSLCreateContext", referenced from:
      ix::SocketAppleSSL::connect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, std::__1::function<bool ()> const&) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_SSLHandshake", referenced from:
      ix::SocketAppleSSL::connect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, std::__1::function<bool ()> const&) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_SSLRead", referenced from:
      ix::SocketAppleSSL::recv(void*, unsigned long) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_SSLSetConnection", referenced from:
      ix::SocketAppleSSL::connect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, std::__1::function<bool ()> const&) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_SSLSetIOFuncs", referenced from:
      ix::SocketAppleSSL::connect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, std::__1::function<bool ()> const&) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_SSLSetPeerDomainName", referenced from:
      ix::SocketAppleSSL::connect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, std::__1::function<bool ()> const&) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_SSLSetProtocolVersionMin", referenced from:
      ix::SocketAppleSSL::connect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, std::__1::function<bool ()> const&) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_SSLWrite", referenced from:
      ix::SocketAppleSSL::send(char*, unsigned long) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_kCFAllocatorDefault", referenced from:
      ix::SocketAppleSSL::connect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, std::__1::function<bool ()> const&) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
      (anonymous namespace)::getSSLErrorDescription(int) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
  "_kCFErrorDomainOSStatus", referenced from:
      (anonymous namespace)::getSSLErrorDescription(int) in libixwebsocket.a(IXSocketAppleSSL.cpp.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
ninja: build stopped: subcommand failed.

[Dimon4eg]

Have you added libssl.a and libcrypto.a to link libraries?

[dhruvkakadiya]

Thank you. Looks like linking of OpenSSL and Crypto is not enough for Mac so needed to link few other libraries(related to Apple specific secure sockets) to get it compiled fine.

find_package(OpenSSL REQUIRED)
target_link_libraries(nakama-cmake-client-example PUBLIC OpenSSL::SSL OpenSSL::Crypto)
target_link_libraries(nakama-cmake-client-example PUBLIC "-framework foundation" "-framework security")

[dhruvkakadiya]

So probably better to link OpenSSL and Crypto libraries inside CMakeLists.txt along with if OS is Apple then link "-framework foundation" "-framework security" as well.

[Dimon4eg]

Fixed in master branch