Documentation is broken

[rgaudin]

Since #574, the documentation can not be generated as the auto-doc part (doxygen) is broken

/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1_entry_range.rst:19: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:class:: template<EntryOrder order> zim::Archive::EntryRange'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1_entry_range.rst:19: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline explicit  EntryRange (const std::shared_ptr< FileImpl > file, entry_index_type begin, entry_index_type end)'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1_entry_range.rst:19: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline iterator< order > begin () const'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1_entry_range.rst:19: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline iterator< order > end () const'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1iterator.rst:28: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:class:: template<EntryOrder order> zim::Archive::iterator : public std::iterator< std::bidirectional_iterator_tag, Entry >'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1iterator.rst:28: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline explicit  iterator (const std::shared_ptr< FileImpl > file, entry_index_type idx)'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1iterator.rst:28: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline  iterator (const iterator< order > &other)'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1iterator.rst:28: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline bool operator== (const iterator< order > &it) const'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1iterator.rst:28: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline bool operator!= (const iterator< order > &it) const'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1iterator.rst:28: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline iterator< order > & operator++ ()'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1iterator.rst:28: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline iterator< order > operator++ (int)'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1iterator.rst:28: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline iterator< order > & operator-- ()'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1iterator.rst:28: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline iterator< order > operator-- (int)'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1iterator.rst:28: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline const Entry & operator* () const'.
/Users/reg/src/libzim/docs/api/classzim_1_1_archive_1_1iterator.rst:28: WARNING: Duplicate C++ declaration, also defined at api/classzim_1_1_archive:24.
Declaration is '.. cpp:function:: inline const Entry * operator-> () const'.

You can check the log at https://readthedocs.org/projects/libzim/builds/14216625/