[CMake] Building shared libs on visual

[Julien Michel]

dear Michael,

I was expecting something like that but as I am not very familiar with 
building libraries on windows, I was not sure wether I was right or 
wrong. Thank you very much,

Best regards,

Julien

Michael Jackson a écrit :

> Julien,
>  Funny. I wrote that wiki entry and it was a bit different when I first 
> wrote it but after some feedback I  changed the code slightly and 
> looking back at the code I don't think it would work correctly for the 
> static case.
>     Like Werner I actually use a second definition in my code:
> #if defined (_WIN32) && defined (BUILT_AS_DYNAMIC_LIB)
> #if defined(MyLibrary_EXPORTS)
> #define  MYLIB_EXPORT __declspec(dllexport)
> #else
> #define  MYLIB_EXPORT __declspec(dllimport)
> #endif /* MyLibrary_EXPORTS */
> #else /* defined (_WIN32) */
> #define MYLIB_EXPORT
> #endif
> #endif /* _MyLibrary_DLLDEFINES_H_ */
> 
> Then in the cmake code you do something like:
> # Allow the developer to select if Dynamic or Static libraries are built
> OPTION (BUILD_SHARED_LIBS "Build Shared Libraries" OFF)
> # Set the LIB_TYPE variable to STATIC
> SET (LIB_TYPE STATIC)
> IF (BUILD_SHARED_LIBS)
>   # User wants to build Dynamic Libraries, so change the LIB_TYPE 
> variable to CMake keyword 'SHARED'
>   ADD_DEFINITIONS(-DBUILD_AS_DYNAMIC_LIBRARY)
>   SET (LIB_TYPE SHARED)
> ENDIF (BUILD_SHARED_LIBS)
> 
> Which should help take care of that case for you.
> 
> Mike



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Julien MICHEL - Ingénieur d'études - Traitement d'images
CS Systèmes d'Information - Division ESPACE
Département Information Géographique & Image
Téléphone : +33 561 17 64 27
Email : julien.michel at c-s.fr

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