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      Linking a binary from source files that were compiled with different RTTI flags
      is not a very good idea and may lead to a lot of surprises. However if there
      is a very strong need, TypeIndex library provides a solution for mixing sources:
      just define BOOST_TYPE_INDEX_FORCE_NO_RTTI_COMPATIBILITY
      macro. This would lead to usage of same type_index class (boost::typeindex::ctti_type_index
      or boost::typeindex::stl_type_index) all around the project.
    
| ![[Note]](../../../doc/src/images/note.png) | Note | 
|---|---|
| 
        Do not forget to rebuild all the projects
        with  | 
      You must know that linking RTTI on and RTTI off binaries may succeed even without
      defining the BOOST_TYPE_INDEX_FORCE_NO_RTTI_COMPATIBILITY
      macro, but that does not mean that you'll get a working binary. Such actions
      may break the One Definition Rule. Take a look at the table below, that shows
      how the boost::type_index get_integer(); function will look like with different RTTI
      flags:
    
| RTTI on | RTTI off | 
|---|---|
| 
                 | 
                 | 
Such differences are usually not detected by linker and lead to errors at runtime.
| ![[Warning]](../../../doc/src/images/warning.png) | Warning | 
|---|---|
| 
        Even with  |