It just can't copy to the same source directory.
On Fri, Sep 21, 2018 at 4:32 PM J Decker <d3c...@gmail.com> wrote:
>
>
> On Fri, Sep 21, 2018 at 3:29 PM J Decker <d3c...@gmail.com> wrote:
>
>>
>>
>> On Fri, Sep 21, 2018 at 3:24 PM Ke Gao <ke.gao...@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
>>
>
> It also wouldn't work if you didn't use
> ${CMAKE_CURRENT_SORUCE_DIR}/../../aaa_file.c in another target.
> (and by the same path... which is partially why I copy into BINARY_DIR,
> then it's in a known place for all projects int he tree
>
>>
>>
>
>> 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 <d3c...@gmail.com> wrote:
>>>
>>>>
>>>>
>>>> On Fri, Sep 21, 2018 at 3:00 PM Ke Gao <ke.gao...@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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>>>>
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>>>> Please keep messages on-topic and check the CMake FAQ at:
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>>>
>>>
>>> --
>>>
>>> ..............................................................................................................................................
>>> Ke Gao
>>>
>>
--
..............................................................................................................................................
Ke Gao
--
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