GSSAPI plugin fails to build : error: invalid conversion from ‘int’ to ‘krb5_enctype {aka ENCTYPE}’

[ 74%] Building CXX object plugin/auth_gssapi/CMakeFiles/auth_gssapi.dir/gssapi_server.cc.o  [58/1847]

cd /var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql-abi_x86_64.amd64/plugin/auth_gssapi && /usr/bin/x86_64-pc-linux-gnu-g++  -DHAVE_CONFIG_H -DMYSQL_DYNAMIC_PLUGIN -DPLUGIN_GSSAPI -Dauth_gssapi_EXPORTS -I/var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql-abi_x86_64.amd64/include -I/var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/include -I/var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/sql   -O2 -pipe -g -felide-constructors -fno-strict-aliasing  -pie -fPIC -Wl,-z,relro,-z,now -fstack-protector --param=ssp-buffer-size=4 -fno-exceptions -fno-rtti -DNDEBUG -DDBUG_OFF -fPIC   -o CMakeFiles/auth_gssapi.dir/gssapi_server.cc.o -c /var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/plugin/auth_gssapi/gssapi_server.cc

/var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/plugin/auth_gssapi/gssapi_server.cc: In function ‘char* get_default_principal_name()’:

/var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/plugin/auth_gssapi/gssapi_server.cc:61:68: error: invalid conversion from ‘int’ to ‘krb5_enctype {aka ENCTYPE}’ [-fpermissive]

   if (krb5_kt_read_service_key(context, NULL, principal, 0, 0, &key))

                                                                    ^

In file included from /usr/include/krb5.h:887:0,

                 from /var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/plugin/auth_gssapi/gssapi_server.cc:33:

/usr/include/krb5-protos.h:2844:1: note:   initializing argument 5 of ‘krb5_error_code krb5_kt_read_service_key(krb5_context, krb5_pointer, krb5_princ

ipal, krb5_kvno, krb5_enctype, krb5_keyblock**)’

 krb5_kt_read_service_key (

 ^

/var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/plugin/auth_gssapi/gssapi_server.cc:73:5: warning: ‘void krb5_free_unparsed_name(krb5_context, char*)’ is deprecated [-Wdeprecated-declarations]

     krb5_free_unparsed_name(context, unparsed_name);

     ^

In file included from /usr/include/krb5.h:887:0,

                 from /var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/plugin/auth_gssapi/gssapi_server.cc:33:

/usr/include/krb5-protos.h:1962:1: note: declared here

 krb5_free_unparsed_name (

 ^

/var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/plugin/auth_gssapi/gssapi_server.cc:73:5: warning: ‘void krb5_free_unparsed_name(krb5_context, char

*)’ is deprecated [-Wdeprecated-declarations]

     krb5_free_unparsed_name(context, unparsed_name);

     ^

In file included from /usr/include/krb5.h:887:0,

                 from /var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/plugin/auth_gssapi/gssapi_server.cc:33:

/usr/include/krb5-protos.h:1962:1: note: declared here

 krb5_free_unparsed_name (

 ^

/var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/plugin/auth_gssapi/gssapi_server.cc:73:51: warning: ‘void krb5_free_unparsed_name(krb5_context, cha

r*)’ is deprecated [-Wdeprecated-declarations]

     krb5_free_unparsed_name(context, unparsed_name);

                                                   ^

In file included from /usr/include/krb5.h:887:0,

                 from /var/tmp/portage/dev-db/mariadb-10.1.11/work/mysql/plugin/auth_gssapi/gssapi_server.cc:33:

/usr/include/krb5-protos.h:1962:1: note: declared here

 krb5_free_unparsed_name (

 ^