Compiling refpolicy base module

/usr/bin/checkmodule base.conf -o tmp/base.mod

/usr/bin/checkmodule:  loading policy configuration from base.conf

base.conf:1:ERROR 'syntax error' at token 'attribute' on line 1:

attribute auth_file_type;

attribute boolean_type;

attribute can_change_object_identity;

attribute can_change_process_identity;

attribute can_change_process_role;

attribute can_dump_kernel;

attribute can_load_kernmodule;

attribute can_load_policy;