[CMake] Linked Imported Library in Visual Studio Showing NOTFOUND

[Petr Kmoch]

Hi Dustyn,

ELF platforms link against .so files, but Windows links against import
libraries (.lib files) assocaited with DLLs. Does the target 'bar' have the
IMPORTED_IMPLIB property set up correctly? (See
https://cmake.org/cmake/help/latest/prop_tgt/IMPORTED_IMPLIB.html )

Petr

On Tue, 16 Apr 2019 at 21:37, Dustyn Blasig <dustyn at blasig.us> wrote:

> Hi All,
>
> I'm trying to debug an issues where an imported shared library is showing
> up in the linker command as not found, but within the CMake generation the
> target seems to exist.
>
> # CMakeLists.txt ####################
>
> include(bar.cmake)
>
> add_library(foo SHARED)
>
> if(TARGET bar)
>   target_link_libraries(foo PUBLIC bar)
> endif()
>
> # bar.cmake #######################
>
> add_library(bar SHARED IMPORTED)
>
> ...
>
>
> On Linux, the link command contains the correct *-L<bar path>* and *-lbar*
> options. However, on Windows (Visual Studio) the linker command has
> "bar-NOTFOUND" instead of bar.lib as it should, even though bar should only
> be added as a dependency *if* it exists.
>
> How can I debug why this would happen? Is there a way to have CMake dump
> more information about that target?
>
> Thanks!
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