[CMake] MSVC7.1 static link question

[Luigi Calori]

Philip Lowman ha scritto:
> On Wed, Feb 11, 2009 at 8:54 AM, Brad King <brad.king at kitware.com 
> <mailto:brad.king at kitware.com>> wrote:
>
>     Philip Lowman wrote:
>
>         On Tue, Feb 10, 2009 at 1:01 PM, Brad King
>         <brad.king at kitware.com <mailto:brad.king at kitware.com>    CMake
>         2.6 makes it easy to export targets from one project (either its
>
>            build tree or install tree) for use by another project.
>
>         Is this the easiest way to register dependencies of IMPORTED
>         static libraries against each other?  I'm just curious if
>         there are plans to make target_link_libraries() work for this
>         or is there a technical problem allowing it?
>
>
>     I do not plan to allow target_link_libraries for this.  One must use
>     IMPORTED_LINK_INTERFACE_LIBRARIES.  However, it is easier than your
>     example makes it because the property can name other imported
>     targets:
>
>
>     add_library(baz STATIC IMPORTED)
>     set_target_properties(baz PROPERTIES
>        IMPORTED_LOCATION_RELEASE ${CMAKE_CURRENT_SOURCE_DIR}/libbaz.a
>        IMPORTED_LOCATION_DEBUG   ${CMAKE_CURRENT_SOURCE_DIR}/libbazd.a)
>
>     add_library(bar STATIC IMPORTED)
>     set_target_properties(bar PROPERTIES
>        IMPORTED_LOCATION_RELEASE ${CMAKE_CURRENT_SOURCE_DIR}/libbar.a
>        IMPORTED_LOCATION_DEBUG   ${CMAKE_CURRENT_SOURCE_DIR}/libbard.a
>        IMPORTED_LINK_INTERFACE_LIBRARIES baz) # <-- dependency is here
>
I' ma bit confused, just to make clear: the proposed import method  are 
used in the  final projects that USES the libraries.
by install(EXPORT) the needed code is hidden in a config--baz--cmake 
file that is evaluated inby the final project tha so does not have to 
rely on FindBAZ script.
But effectively this is just a way to hide the fact that  the final 
project  links to both libbaz and libbar

The specification of dependency lib as a STATIC_LIBRARY_FLAGS produce a 
bigger library tha has both baz and bar, and can be used straight, at 
least under VS7.1

I appreciate the IMPORT and EXPORT stuff and will try to use that (could 
we use that also for the whole OpenSceneGraph itself ? what do you think 
Philip?)
Nevertheless the STATIC_LIBRARY_FLAGS seems much simpler

Thanks
>
> Yes, thanks for pointing that out, that is much simpler.
>
>     Note if the outside project is also created by CMake, the
>     install(EXPORT)
>     feature can generate the proper import code for it.
>
>  
> Yes, I hope to play with that feature soon.  Thanks.
>
> -- 
> Philip Lowman