[CMake] Generated files?

[Petr Kmoch]

Hi Chris.

I believe a function should do the trick:

function(ProcessFile inFile)
  get_filename_component(outFile ${inFile} NAME_WE)
  set(outFile ${outFile}.out)
  add_custom_command(
    OUTPUT ${outFile}
    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/${inFile}
${CMAKE_CURRENT_BINARY_DIR}
    COMMAND myprog ${inFile} ${outFile}
    DEPENDS ${inFile} myprog.cpp
  )
  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${outFile} DESTINATION
share/docs)
endfunction()

(Modulo syntax errors, untested)

Petr

On Thu, Jan 29, 2015 at 4:09 PM, Chris Johnson <cxjohnson at gmail.com> wrote:

> ​I am looking for suggestions on how to solve the following problem.  I
> need a solution which is easy to understand and safe from future
> maintenance errors.
>
> There is a project directory with one C++ program and a large number of
> "input" data files.
>
> The C++ program needs to be compiled, and then run against each of the
> input files to generate an output file of the same base name but with a
> different output suffix.  E.g. from the command line it might be:
>
>     % myprog  file001.in  file001.out
>
> Finally, the output files need to be installed in the proper location.
>
> For one input file, it might look like this:
>
>     add_executable(myprog myprog.cpp)
>     add_custom_command(OUTPUT file001.out
>         COMMAND /bin/cp ${CMAKE_CURRENT_SOURCE_DIR}/file001.in .
>         COMMAND myprog file001.in file001.out
>         DEPENDS files001.in myprog.cpp
>     )
>     install(FILES ${CMAKE_CURRENT_BINARY_DIR}/file001.out DESTINATION
> share/docs)
>
>
> Listing all of the input files in my CMakeLists.txt file is not a problem,
> but it would be nice to avoid having to list the corresponding output files.
>
> How can I build a CMakeLists.txt file which will succinctly handle this
> situation?
>
> --
> Thanks,
> ..chris​
>
> --
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