[CMake] add_custom_commmand TARGET is unknown

[Mark Abraham]

Hi,

CMakeLists.txt files are processed from start to finish, so if you want to
refer to a target created in a subdirectory, then you need to have added
that subdirectory before using that target.

Mark
On 16/04/2015 1:25 am, "Daniel Dilts" <diltsman at gmail.com> wrote:

> I have a function  that does something like this:
>
> add_dependencies(${LibraryName} SomeTarget)
> add_custom_command(TARGET SomeTarget PRE_BUILD
>   COMMAND MyExecutable.exe
>   USES_TERMINAL
>   )
>
> It creates the dependency without any issues, but it gives the following
> error on the custom command:
>
> CMake Error at CMakeLists.txt:37 (add_custom_command):
>   The target name "SomeTarget" is unknown in this context.
>
> SomeTarget is created using add_library later in the build system.
>
> Is there some way to make this work?  SomeTarget is created deeper in the
> build system (3-5 directories down).
>
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