Optionally it may use the following libraries:
* libtasn1: For ASN.1 parsing (a copy is included, if not found), https://www.gnu.org/software/libtasn1/
-* p11-kit: for smart card support, https://p11-glue.freedesktop.org/p11-kit.html
+* p11-kit: for smart card support, https://p11-glue.github.io/p11-glue/p11-kit.html
* libtspi: for Trusted Platform Module (TPM) support, https://trousers.sourceforge.net/
* libunbound: For DNSSEC/DANE support, https://unbound.net/
* libz: For compression support, https://www.zlib.net/
* [Perl](https://www.cpan.org/)
* [Nettle](https://www.lysator.liu.se/~nisse/nettle/)
* [Guile](https://www.gnu.org/software/guile/)
-* [p11-kit](https://p11-glue.freedesktop.org/p11-kit.html)
+* [p11-kit](https://p11-glue.github.io/p11-glue/p11-kit.html)
* [gperf](https://www.gnu.org/software/gperf/)
* [libtasn1](https://www.gnu.org/software/libtasn1/) (optional)
* [Libidn2](https://www.gnu.org/software/libidn/#libidn2) (optional, for internationalization of DNS, IDNA 2008)