Must do a SSL_init_eay_ciphers();before calls to SSL_CTX_new()SSL_CTX *SSL_CTX_new(void ) -> SSL_CTX *SSL_CTX_new(SSL_METHOD *meth);SSL_CTX_set_cert_verify_cb -> the callback is nowint callback(char *arg,SSL *s,X509 *xs,STACK *cert_chain);where the 'cert_chain' has been added.