[CMake] How to duplicate a source file and rename it

[J Decker]

On Fri, Sep 21, 2018 at 3:24 PM Ke Gao <ke.gao.ut at gmail.com> wrote:

> Thanks. I forgot to say my CMakeList.txt is not located together with the
> source files. So I used the following, it seems not working:
> add_custom_command( OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/../../aaa_file.c
>                            DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/../../
> file.c
>                            COMMAND ${CMAKE_COMMAND} -E copy_if_different
> ${CMAKE_CURRENT_SOURCE_DIR}/../../file.c
> ${CMAKE_CURRENT_SOURCE_DIR}/../../aaa_file.c
>     )
> Is there an easier way to do this?
>
not really...
NOt sure why it wouldn't work unless current_source_dir isn't what you
think it is.
I actually copy mine into

                           COMMAND ${CMAKE_COMMAND} -E copy_if_different
${SOURCE} ${CMAKE_BINARY_DIR}/${BASENAME}

 (basename is the path part of the ${SOURCE})

>
>
> On Fri, Sep 21, 2018 at 4:10 PM J Decker <d3ck0r at gmail.com> wrote:
>
>>
>>
>> On Fri, Sep 21, 2018 at 3:00 PM Ke Gao <ke.gao.ut at gmail.com> wrote:
>>
>>> Hi,
>>>
>>> In a project, I need to first duplicate a source file and rename it. For
>>> example, I want to change "file.c" to "aaa_file.c", and after compiling, I
>>> will delete it. This is similar to using "cp file.c aaa_file.c". How to
>>> easily do this in CMake? I found "file" command doesn't work well for this.
>>>
>>>
>> add_custom_command( OUTPUT aaa_file.c
>>                            DEPENDS file.c
>>                            COMMAND ${CMAKE_COMMAND} -E copy_if_different
>> file.c aaa_file.c
>>     )
>>
>> then you just have to reference the source file 'aaa_file.c' and it will
>> get updated if file.c is different. I also do
>>                              COMMAND ${CMAKE_COMMAND} -E touch aaa_file.c
>>
>> just to make sure it is new.
>>
>>
>>
>>> Thank you very much.
>>>
>>> --
>>>
>>> ..............................................................................................................................................
>>> Ke Gao
>>> --
>>>
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>> --
>>
>> Powered by www.kitware.com
>>
>> Please keep messages on-topic and check the CMake FAQ at:
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>>
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>>
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>
>
> --
>
> ..............................................................................................................................................
> Ke Gao
>
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