Re: [CMake] Force copy of files

[Eric Noulard]

2016-10-14 19:34 GMT+02:00 Aaron Boxer :

> I have the following lines in my cmake file
>
>
> foreach(f ${MyFiles})
>   add_custom_command(TARGET ${OPENJPEG_PLUGIN_NAME} PRE_BUILD
>  COMMAND ${CMAKE_COMMAND} -E
>  copy ${f} $)
> endforeach()
>
> in order to copy MyFiles to MyFolder.
>
>
> If these files already exist, I would like copy to overwrite the old file.
> Is there a flag to pass to copy to force this to overwrite?
>

I don't think so since the "-E copy" already has the behaviour you describe.
i.e. it will overwrite the file in any case.

Th only variant you have is the copy_if_different which may avoid changing
the timestamp of a file which didn't change.

-- 
Eric
-- 

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Re: [CMake] Force copy of files

[David Cole via CMake]

"copy" should always overwrite.

"copy_if_different" will conditionally overwrite, only if the contents
of the two files are different.

If "copy" was not overwriting something when it should have been,
please send steps to reproduce the issue, because that would be a bug.


HTH,
David C.



On Fri, Oct 14, 2016 at 1:47 PM, Aaron Boxer  wrote:
> Never mind, figured this one out:
>
> use copy_if_different
>
> On Fri, Oct 14, 2016 at 1:34 PM, Aaron Boxer  wrote:
>>
>> I have the following lines in my cmake file
>>
>>
>> foreach(f ${MyFiles})
>>   add_custom_command(TARGET ${OPENJPEG_PLUGIN_NAME} PRE_BUILD
>>  COMMAND ${CMAKE_COMMAND} -E
>>  copy ${f} $)
>> endforeach()
>>
>> in order to copy MyFiles to MyFolder.
>>
>>
>> If these files already exist, I would like copy to overwrite the old file.
>> Is there a flag to pass to copy to force this to overwrite?
>>
>> Thanks!
>> Aaron
>
>
>
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>
> Powered by www.kitware.com
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> Please keep messages on-topic and check the CMake FAQ at:
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Re: [CMake] Force copy of files

[Aaron Boxer]

Never mind, figured this one out:

use copy_if_different

On Fri, Oct 14, 2016 at 1:34 PM, Aaron Boxer  wrote:

> I have the following lines in my cmake file
>
>
> foreach(f ${MyFiles})
>   add_custom_command(TARGET ${OPENJPEG_PLUGIN_NAME} PRE_BUILD
>  COMMAND ${CMAKE_COMMAND} -E
>  copy ${f} $)
> endforeach()
>
> in order to copy MyFiles to MyFolder.
>
>
> If these files already exist, I would like copy to overwrite the old file.
> Is there a flag to pass to copy to force this to overwrite?
>
> Thanks!
> Aaron
>
-- 

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