[CMake] add_custom_commmand TARGET is unknown

[Daniel Dilts]

I moved the add_custom_target to the 4th line of my top-level
CMakeLists.txt.  The only lines before it are cmake_minimum_required,
project, and a single set.  I also made sure that the name of the target
matches the target name in add_custom_command and add_dependencies.  I am
still getting the same set of errors.

On Wed, Apr 15, 2015 at 6:00 PM, Mark Abraham <mark.j.abraham at gmail.com>
wrote:

> 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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