libressl: the latest openssl x509 funcs are not in libressl

#define OPENSSL_NO_SSL2

#endif

#if OPENSSL_VERSION_NUMBER >= 0x10100000L /* 1.1.0+ */

#if (OPENSSL_VERSION_NUMBER >= 0x10100000L) && /* OpenSSL 1.1.0+ */ \

  !defined(LIBRESSL_VERSION_NUMBER)

#define SSLeay_add_ssl_algorithms() SSL_library_init()

#define SSLeay() OpenSSL_version_num()

#define SSLEAY_VERSION_NUMBER OPENSSL_VERSION_NUMBER

#define HAVE_X509_GET0_EXTENSIONS 1 /* added in 1.1.0 -pre1 */

#endif

#if OPENSSL_VERSION_NUMBER >= 0x1000200fL /* 1.0.2 or later */

#if (OPENSSL_VERSION_NUMBER >= 0x1000200fL) && /* 1.0.2 or later */ \

  !defined(LIBRESSL_VERSION_NUMBER)

#define HAVE_X509_GET0_SIGNATURE 1

#endif