[CMake] install files generator expression

[Petr Kmoch]

Hi Lars.

The DESTINATION parameter of install() accepts only a single argument,
which means it's tripping on the line break between the two genexes. Make
it one argument:

INSTALL(FILES ${qt5_locations}
  DESTINATION
    $<$<PLATFORM_ID:Windows>:bin>$<$<PLATFORM_ID:Linux>:lib>
  COMPONENT runtime)

This should work.

Petr


On Wed, 9 Jan 2019 at 12:29, Lars <laasunde at hotmail.com> wrote:

> Hello,
>
> We use find_package command in config mode to find Qt 5.11 libraries. The
> libraries are available as imported (Qt5::Core etc).
>
> Our understand is that CMake does not support install of imported targets.
> Therefore we use get_target_property to find actual location of library and
> Install(Files ...) to install the files.
>
> The install command looks like this (and works);
> INSTALL(FILES ${qt5_locations} DESTINATION "bin" COMPONENT runtime)
>
> The documentation states that DESTINATION supports generator expression.
> We would like to use generator expression to install libraries in "bin" on
> Windows and "lib" on Linux but have not be able to accomplish this task.
> The below command generated the following error message "Install files
> given unknown argument  $<$<PLATFORM_ID:Linux>:lib>". We have tried other
> variants but none of them work.
>
> INSTALL(FILES ${qt5_locations}
>   DESTINATION
>     $<$<PLATFORM_ID:Windows>:bin>
>     $<$<PLATFORM_ID:Linux>:lib>
>   COMPONENT runtime)
>
> Appreicate any input.
>
> kind regards, Lars
>
>
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