[CMake] How to add a target link library, but only for a custom configuration ?

[Glenn Coombs]

Thanks for that link Michael.  It doesn't please me, but I can confirm that
it does work :-)  It's a nice hack around a deficiency in cmake.  I ended up
using this code:

# First create a dummy library to hang the pthreads
# dependency on via the IMPORTED_LINK_INTERFACE_LIBRARIES property.
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/pthreads_dummy.c "")
add_library(pthreads_dummy STATIC
${CMAKE_CURRENT_BINARY_DIR}/pthreads_dummy.c)

# make sure the dummy library gets built
add_dependencies(systemc pthreads_dummy)

# export the dummy library so we can include it as an imported target
export(TARGETS pthreads_dummy NAMESPACE imported FILE
importedpthreads_dummy.cmake)
include(${CMAKE_CURRENT_BINARY_DIR}/importedpthreads_dummy.cmake)

# use the imported target to add pthread dependency for the DEBUGPTHREADS
config
set_target_properties(importedpthreads_dummy
    PROPERTIES
    IMPORTED_LINK_INTERFACE_LIBRARIES_DEBUGPTHREADS ${PTHREADS_LIBRARIES})

target_link_libraries(myLib importedpthreads_dummy)

which is a lot of extra lines when all I really want is something like this:

target_link_libraries(myLib CONFIG DebugPthreads pthreads)

--
Glenn


On 26 April 2011 15:15, Michael Hertling <mhertling at online.de> wrote:

>
> There is a possibility with an intermediate empty static library which
> gets reimported into the project and equipped with the target property
> IMPORTED_LINK_INTERFACE_LIBRARIES_<CONFIG>, but I don't know if that
> approach will please you... ;) Anyway, see [1] for the details.
>
> Regards,
>
> Michael
>
> [1] http://www.mail-archive.com/cmake@cmake.org/msg34680.html
>
> PS: Empty static libraries aren't allowed on Windows; use
>
> FILE(WRITE ${CMAKE_BINARY_DIR}/dummy.c "")
> ADD_LIBRARY(dummy STATIC dummy.c)
>
> to satisfy the Visual Studio tools.
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