The init_priority variable attribute
The variable attribute init_priority is an extension to C++ that allows you to control the initialization order of static objects defined in namespace scope across multiple compilation units.
The relative_priority is a constant integral expression between 101 and 65535, inclusive. A lower number indicates a higher priority.init_priority variable attribute syntax >>-__attribute__------------------------------------------------> >--((--+-------------------+--+-------------------------+--))-->< +-init_priority-----+ '-(--relative_priority--)-' '-__init_priority__-'
