的boost ::支持ASIO :: SSL链接错误在Xcode 4

Question

我有一个简单的项目的Xcode，它实际上并没有做任何事情，只是包括boost::asio::ssl：

// main.cpp 

#include <iostream> 
#include <string> 
#include <boost/asio.hpp> 
#include <boost/asio/ssl.hpp> 

using namespace std ; 

int main (int argc, const char * argv []) { 
    return 0 ; 
} 

我已经将其与libssl.dylib和链接libboost_system.dylib，建设时得到这样的：

Undefined symbols for architecture x86_64: 
    "_CONF_modules_unload", referenced from: 
     boost::asio::ssl::detail::openssl_init_base::do_init::~do_init() in main.o 
    "_CRYPTO_cleanup_all_ex_data", referenced from: 
     boost::asio::ssl::detail::openssl_init_base::do_init::~do_init() in main.o 
    "_CRYPTO_num_locks", referenced from: 
     boost::asio::ssl::detail::openssl_init_base::do_init::do_init() in main.o 
    "_CRYPTO_set_id_callback", referenced from: 
     boost::asio::ssl::detail::openssl_init_base::do_init::do_init() in main.o 
     boost::asio::ssl::detail::openssl_init_base::do_init::~do_init() in main.o 
    "_CRYPTO_set_locking_callback", referenced from: 
     boost::asio::ssl::detail::openssl_init_base::do_init::do_init() in main.o 
     boost::asio::ssl::detail::openssl_init_base::do_init::~do_init() in main.o 
    "_ENGINE_cleanup", referenced from: 
     boost::asio::ssl::detail::openssl_init_base::do_init::~do_init() in main.o 
    "_ERR_free_strings", referenced from: 
     boost::asio::ssl::detail::openssl_init_base::do_init::~do_init() in main.o 
    "_ERR_reason_error_string", referenced from: 
     boost::asio::error::detail::ssl_category::message(int) const in main.o 
    "_ERR_remove_state", referenced from: 
     boost::asio::ssl::detail::openssl_init_base::do_init::~do_init() in main.o 
    "_EVP_cleanup", referenced from: 
     boost::asio::ssl::detail::openssl_init_base::do_init::~do_init() in main.o 
    "_OPENSSL_add_all_algorithms_noconf", referenced from: 
     boost::asio::ssl::detail::openssl_init_base::do_init::do_init() in main.o 
ld: symbol(s) not found for architecture x86_64 
clang: error: linker command failed with exit code 1 (use -v to see invocation) 

有我错过了一些其他图书馆或别的东西，我忽略了？

Answer 1

我认为你需要对libcrypto链接以及-lcrypto