[CMake] Fwd: File(write and add_custom_command

[norulez at me.com]

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> Von: norulez at me.com
> Datum: 23. Dezember 2011 16:15:37 MEZ
> An: David Cole <david.cole at kitware.com>
> Betreff: Re: [CMake] File(write and add_custom_command
> 
> I'll give it a try
> 
> Great thanks
> 
> Am 23.12.2011 um 16:10 schrieb David Cole <david.cole at kitware.com>:
> 
>> You cannot put a function in CMakeLists.txt and then simply call that
>> function with add_custom_command.
>> 
>> add_custom_command runs a command line tool. The custom command runs
>> later at build time. It does not run while cmake is running, it runs
>> later.
>> 
>> What you can do is write a CMake script file like this:
>> 
>> # begin CallXyz.cmake
>> function(xyz arg1 arg2 ...)
>> ...
>> endfunction()
>> 
>> xyz("arg1value" "arg2value")
>> # end CallXyz.cmake
>> 
>> And then use cmake -P like I said in my previous reply.
>> 
>> Is there a problem with hosting this function in its own file? Seems
>> like a reasonable thing to do to me...
>> 
>> 
>> On Fri, Dec 23, 2011 at 10:02 AM,  <norulez at me.com> wrote:
>>> Thanks,
>>> 
>>> When i create a function, can i call it with add_custom_command to avoid extra files?
>>> 
>>> Best Regards
>>> 
>>> Am 23.12.2011 um 15:29 schrieb David Cole <david.cole at kitware.com>:
>>> 
>>>> If you need to, pass -D args as well:
>>>> 
>>>> add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/output.txt
>>>>   COMMAND ${CMAKE_COMMAND}
>>>> -Dfilename=${CMAKE_CURRENT_BINARY_DIR}/output.txt -P
>>>> ${dir}/filewrite.cmake
>>>>   DEPENDS ${dir}/filewrite.cmake ${other_files_too_maybe}
>>>> )
>>>> 
>>>> 
>>>> On Fri, Dec 23, 2011 at 9:28 AM, David Cole <david.cole at kitware.com> wrote:
>>>>> Yes.
>>>>> 
>>>>> Put it in a *.cmake script file, and then call:
>>>>> 
>>>>> add_custom_command(OUTPUT ...
>>>>>   COMMAND ${CMAKE_COMMAND} -P ${dir}/filewrite.cmake
>>>>>   DEPENDS ${dir}/filewrite.cmake ${other_files_too_maybe}
>>>>> )
>>>>> 
>>>>> You cannot call it directly from custom command, because it needs a
>>>>> CMake process around it. If you want to call CMake at build time to
>>>>> run a -P script, it's quite reasonable to do so.
>>>>> 
>>>>> 
>>>>> HTH,
>>>>> David
>>>>> 
>>>>> 
>>>>> On Fri, Dec 23, 2011 at 9:22 AM,  <norulez at me.com> wrote:
>>>>>> Hi,
>>>>>> 
>>>>>> is it possible to use file(write...) for a add_custom_command or add_custom_target?
>>>>>> 
>>>>>> Thanks in advance
>>>>>> 
>>>>>> Best Regards
>>>>>> NuRulez
>>>>>> 
>>>>>> P.S.: Merry Christmas and a happy new year
>>>>>> --
>>>>>> 
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>>>>>> 
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