In order for libtls to run with the gcrypt libraryi, additionally the
random, pem, gcm, hmac, kdf, x509, constraints, and the curve2519
plugins are needed.
The botan library additionally need the hmac (for HMAC_MD5), x509 and
constraints plugins.
The wolfssl library additionally need the pkcs1, pkcs8, x509 and constraints
plugins.