[CMake] GenerateExportHeader for module library

[Stephen Kelly]

Gregoire Aujay wrote:

> Hello,
> 
> I am doing my tests with visual 2008 and mingw.
> 
> As far as I understand a module is like a shared library that cannot be
> linked. Instead it is dynamically loaded and then we find and use symbols
> in it. It is like doing the linker's job manually at runtime.
> 
> If nothing is exported from my module then I do cannot find any symbol in
> it. Or at least I do not know how to do so.
> 
> I modified the GenerateExportHeader module to be able to export symbols
> from my MODULE:
> 
>   # if(${type} STREQUAL "MODULE")
>     # message(WARNING "This macro should not be used with libraries of
>     # type MODULE") return()
>   # endif()
>   if(NOT ${type} STREQUAL "STATIC_LIBRARY" AND NOT ${type} STREQUAL
>   "SHARED_LIBRARY" AND NOT ${type} STREQUAL "MODULE_LIBRARY")
>     message(WARNING "This macro can only be used with libraries")
>     return()
>   endif()
> 
> 
> Regards,
> 
> Gregoire
> 

Please file a bug report so that this is not forgotten. 

Ideally also provide some code to test it. I'm not familiar with how plugins 
should be loaded in a cross-platform way (without Qt, that is).

Thanks,

Steve.