[2.0] GNUTLS error 3.+

[SeLEct-]

Hello.
I was getting this error with the latest version of gnutls on apt resp while trying to make.
I'm now using version 2.8.5 and can build without any errors.
So it seems it "breaks" somewhere along 2.8.5 and 3.0.11.

Locating include directory for package gnutls for module m_ssl_gnutls.cpp... -I/usr/include/p11-kit-1   -DVERSION_GNUTLS="3.0.11" (version 3.0.11)
Locating library directory for package gnutls for module m_ssl_gnutls.cpp... -lgnutls   (version 3.0.11)
 BUILD:modules/m_ssl_gnutls.cpp /home/user/inspircd/src/modules/m_ssl_gnutls.cpp: In member function âvirtua               l void ModuleSSLGnuTLS::OnModuleRehash(User*, const string&)â: /home/user/inspircd/src/modules/m_ssl_gnutls.cpp:308:3: warning: âvoid gnutls_certificate_client_set_retrieve_function(gnutls_certificate_credentials_t, int   (*)(gnutls_session_t, const gnutls_datum_t*, int, const gnutls_pk_algorithm_t*,int, gnutls_retr_st*))â is deprecated (declared at /usr/include/gnutls/compat.h:184) [-Wdeprecated-declarations] /home/user/inspircd/src/modules/m_ssl_gnutls.cpp:308:76: warning: âvoid gnutls_certificate_client_set_retrieve_function(gnutls_certificate_credentials_t, in  t (*)(gnutls_session_t, const gnutls_datum_t*, int, const gnutls_pk_algorithm_t*, int, gnutls_retr_st*))â is deprecated (declared at /usr/include/gnutls/compat.h:184) [-Wdeprecated-declarations]

[attilamolnar]

-Wdeprecated-declarations shouldn't be enabled when compiling m_ssl_gnutls