[CMake] add_custom_target and output file dependencies

[Clifford Yapp]

On Thu, Feb 10, 2011 at 10:48 AM, David Cole <david.cole at kitware.com> wrote:
> Show us the surrounding code (i.e. -- the actual copy command)

<nods> - sorry, should have provided more detail.

This is an example file that does the copying:

      SET(FILES_TO_COPY
/home/user/brlcad/cmake/src/tclscripts/ami.tcl;/home/user/brlcad/cmake/src/tclscripts/ampi.tcl;/home/user/brlcad/cmake/src/tclscripts/cad_clrpick.tcl;/home/user/brlcad/cmake/src/tclscripts/cad_dialog.tcl;/home/user/brlcad/cmake/src/tclscripts/chkexterns.tcl;/home/user/brlcad/cmake/src/tclscripts/fs_dialog.tk;/home/user/brlcad/cmake/src/tclscripts/helpcomm.tcl;/home/user/brlcad/cmake/src/tclscripts/helplib.tcl;/home/user/brlcad/cmake/src/tclscripts/hoc.tcl;/home/user/brlcad/cmake/src/tclscripts/html_library.tcl;/home/user/brlcad/cmake/src/tclscripts/libdm.tcl;/home/user/brlcad/cmake/src/tclscripts/menu_override.tcl;/home/user/brlcad/cmake/src/tclscripts/mouse.tcl;/home/user/brlcad/cmake/src/tclscripts/vmath.tcl)
      FILE(COPY ${FILES_TO_COPY} DESTINATION
/home/user/brlcad/cmake-build/share/brlcad/7.18.1/tclscripts)

This is the subset of the macro that generates the files:

     SET(inputlist)
      FOREACH(filename ${${datalist}})
         SET(inputlist ${inputlist} ${CMAKE_CURRENT_SOURCE_DIR}/${filename})
      ENDFOREACH(filename ${${datalist}})
      SET(${targetprefix}_cmake_contents "
      SET(FILES_TO_COPY ${inputlist})
      FILE(COPY \${FILES_TO_COPY} DESTINATION
${CMAKE_BINARY_DIR}/${DATA_DIR}/${targetdir})
      ")
      FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${targetprefix}.cmake
"${${targetprefix}_cmake_contents}")
      SET(outputlist)
      FOREACH(filename ${${datalist}})
         GET_FILENAME_COMPONENT(ITEM_NAME ${filename} NAME)
         SET(outputlist ${outputlist}
${CMAKE_BINARY_DIR}/${DATA_DIR}/${targetdir}/${ITEM_NAME})
      ENDFOREACH(filename ${${datalist}})
      ADD_CUSTOM_COMMAND(
         OUTPUT ${outputlist}
         COMMAND ${CMAKE_COMMAND} -P
${CMAKE_CURRENT_BINARY_DIR}/${targetprefix}.cmake
         DEPENDS ${${datalist}}
         )
      ADD_CUSTOM_TARGET(${datalist}_cp ALL DEPENDS ${outputlist})