- libextractor >= 0.6.1
- libmicrohttpd >= 0.9.33
- libgcrypt >= 1.6
-- libgnurl >= 7.34.0 (available from https://gnunet.org/gnurl)
+- libgnurl >= 7.35.0 (available from https://gnunet.org/gnurl)
- libunistring >= 0.9.2
- gnutls >= 3.2.12
- libidn >= 1.0