Hans Leidekker (@hans) commented about dlls/bcrypt/gnutls.c:
const gnutls_datum_t *, const gnutls_datum_t *, const gnutls_datum_t *, const gnutls_datum_t *, const gnutls_datum_t *, const gnutls_datum_t *);
static int (*pgnutls_privkey_decrypt_data)(gnutls_privkey_t, unsigned int flags, const gnutls_datum_t *, gnutls_datum_t *); +static int (*pgnutls_pubkey_encrypt_data)(gnutls_pubkey_t, unsigned int flags, const gnutls_datum_t *, gnutls_datum_t *);
This function is available since 3.0, please put it under the right header. While you're at it you could also move gnutls_privkey_decrypt_data under the 2.12 header.