On 7. Jan, 2010, at 10:51 , Nico Schlömer wrote:
> Hi,
>
> I'm writing a FintMymodule.cmake file for a set of libraries (read:
> components), and with the given examples in the official CMake/Modules
> folder it comes along nicely.
>
> One thing I couldn't figure out now is how to set link dependencies
> between the different components; that is, if I link against component
> A not only libA is required for linking but also libB and libC. With
> regular libraries I understand I can pull this is in by
> TARGET_LINK_LIBRARIES..
>
> Cheers,
> Nico
>
One quick question: Are these libraries created by you? In that case you
shouldn't write a FindMymodule.cmake, but a MymoduleConfig.cmake (see the
documentation of find_package).
Anyhow, to define the transitive link dependencies you can either use
target_link_libraries(A LINK_INTERFACE_LIBRARIES B C) if your CMake is new
enough, or you can use set_target_properties(A PROPERTIES
LINK_INTERFACE_LIBRARIES "B;C"). Both solutions require that you use
add_library(X IMPORTED) (where X = A, B and C) and set their IMPORTED_LOCATION
property to the location on the file system. All of this is full automatic if
you write a MymoduleConfig.cmake, because then you can use
install_targets(A B C EXPORT MymoduleExports
ARCHIVE DESTINATION lib
LIBRARY DESTINATION lib
RUNTIME DESTINATION bin
PUBLIC_HEADER DESTINATION include
)
install(EXPORT MymoduleExports
NAMESPACE Mymodule_
DESTINATION share/mymodule/cmake
)
which will install a file
${CMAKE_INSTALL_PREFIX}/share/mymodule/cmake/MymoduleExports.cmake containing
all the IMPORT stuff and which you can INCLUDE in your MymoduleConfig.cmake.
I hope I could help a bit, otherwise tell us which case it is and I'll be able
to help more.
Michael
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