While building LibreOffice with GCC 5.1, I'm seeing hundreds of warnings: warning: ‘template<class> class std::auto_ptr’ is deprecated [-Wdeprecated-declarations] template<class T> T * get_pointer(std::auto_ptr<T> const& p) Here is more info: http://www.cplusplus.com/reference/memory/auto_ptr/
These come from your system's boost. There is nothing we can do about them.