[CMake] Wanted: Interface link options

[Petr Kmoch]

Hi Andres.

I cannot comment on the property request itself, but you should be able to
work around its absence by using `-` instead of `/` to introduce the linker
option - the Visual Studio tools understand both, AFAIK.

Petr


On Fri, Jun 13, 2014 at 1:42 PM, Anders Lindgren <andlind at gmail.com> wrote:

> Hi!
>
> I have a third party-library only available in Release flavor. When
> building a Debug configuration, I need to pass the option
> /NODEFAULTLIB:libcmt to the Visual Studio linker.
>
> I have been playing around with the new target interface system. However,
> I'm missing a way for a library to specify linker options, that would
> transitively affect targets that use the library (just like the
> INTERFACE_COMPILE_OPTIONS and INTERFACE_LINK_LIBRARIES do for compiler
> options and libraries, respectively).
>
> So, I suggest adding a INTERFACE_LINK_OPTIONS target property. That way I
> would add the library using:
>
>     add_library(the_library.lib STATIC IMPORTED)
>     set_property(TARGET the_library.lib
>       PROPERTY INTERFACE_LINK_OPTIONS
> $<$<CONFIG:Debug>:/NODEFAULTLIB:libcmt>)
>
> In addition, there are two properties, COMPILE_FLAGS and COMPILE_OPTIONS,
> with the difference that the latter understands generator expressions. I
> also suggest adding a LINK_OPTIONS along the same lines.
>
> (Note that the INTERFACE_LINK_LIBRARIES property is designed to contain
> both libraries and linker options. However, an entry is only interpreted as
> an option if it starts with a "-", which is not the case for Visual Studio
> options.)
>
> Sincerely,
>     Anders Lindgren
>
>
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