tlsdate tries to link against polarssl if it is availiable. However it is broken with the current version of polarssl: src/tlsdate-helper.c: In function ‘check_key_length’: src/tlsdate-helper.c:840:9: error: unknown type name ‘x509_cert’ const x509_cert *certificate; ^ [...] For now I think we should add --without-polarssl. I will report the problem upstream. When its fixed we should probably add a use flag for polarssl. I'll also ask if upstream considers polarssl to be the preferred default implementation.
Reported upstream: https://github.com/ioerror/tlsdate/issues/163 And for now disabled in 0.0.12-r1. We can re-add it without automagic behind a use flag if there is demand and upstream fixes the code.