[CMake] Associating files with command

[Ryan Pavlik]

  You were close:

here's a function to handle the wrapping - could stick this in the 
Findtolua.cmake file that you've hopefully made.

function wrap_tolua(outvar)
     set(outfiles)
     foreach(in ${ARGN})
         get_filename_component(inAbs ${in} ABSOLUTE)
         get_filename_component(basename ${in} NAME_WE)
         set(outfile 
"${CMAKE_CURRENT_BINARY_DIR}/generated_${basename}.cpp")
         list(APPEND outfile "${outfile}")
         add_custom_command(OUTPUT "${outfile}"
             COMMAND ${TOLUA_EXECUTABLE} -o "${outfile}" -n ${basename} 
"${inAbs}"
             DEPENDS "${inAbs}"
             COMMENT "Wrapping ${basename} with tolua")
     endforeach()
     set(${outvar} ${outfiles} PARENT_SCOPE)
endfunction()


Then, to do your example:

find_package(tolua REQUIRED)

wrap_tolua(TOLUA_WRAPPED_SRC math.pkg another.pkg)
add_library(myLib theMain.cpp ${TOLUA_WRAPPED_SRC})

(This is similar to how Qt and FLTK builds take place.)

Hope this helps!  Please share your find module with this code added and 
tweaked, if needed - thanks!

Ryan

On 08/31/2010 02:44 PM, Anders Backman wrote:
> Hi all.
>
> I have a directory of .pkg files to be processed by tolua. This in 
> turn generates a bunch of cpp files, which I then link into a library.
>
> My problem right now is that, I would like to generate a project, 
> where each .pkg is associated with a custom command, so that I in 
> visual studio (for exampel) can "compile" each .pkg file individually.
>
> I have managed to create a library, and to get all the generated cpp 
> file associated to the library+a custom target command which is 
> executed PRE_BUILD to the library.
> But thats not quite what I would like. Because then I cant just 
> compile one .pkg file if I edit it. Using the above approach, requires 
> me to build the whole project, which compiles ALL .pkg files 
> associated to it, not what I want. I want to setup a proper dependency 
> chain, so that If a .pkg file is modified, the corresponding 
> "generated"_xx.cpp is generated, and the project is linked.
>
> So I guess Im looking for something like:
>
> add_library(myLib theMain.cpp
>    generated_math.cpp
>    math.pkg
> )
>
> set_source_files_properties(generated_math.cpp GENERATED)
>
> being able to tell CMake that .pkg files are treated in a certain way:
> The command that I want to execute for each .pkg is:
>
> tolua -o generated_math.cpp -n math math.pkg
>
> So any hints on how to do this?
> I can certainly do this in VisualStudio, adding .pkg files to the 
> project, and setting the build events on it, but I need a portable 
> solution...
>
> /A
>
>
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-- 
Ryan Pavlik
HCI Graduate Student
Virtual Reality Applications Center
Iowa State University

http://academic.cleardefinition.com
http://rpavlik.youcanbook.me

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