Question

I use CMake to manage a project with the following layout:

ProjectA/
  include
  doc
  test
ProjectB
  include
  doc
  test

I would like to use CPack to package up a tar.gz source archive with the following layout:

include/
ProjectA/
  doc
  test
ProjectB/
  doc
  test

where the new top-level include contains all include files.

I tried achieving this by running a CMake script through CPACK_INSTALL_SCRIPT, but this script runs before the files are created. Where can I hook into CPack to get that effect?

It also seems that install has no influence on what make
package_source does, but it has an effect on make
package. Unfortunately make package will also build and package
libraries, which is something I don’t want to happen. I want a pure
source distribution ala make dist.

Answer 1

You can call install(DIRECTORY include DESTINATION include) on headers from both ProjectA and ProjectB and install them into the same dir. This would cause CPack to place them together in the generated package.

Update

Okay, i’ve managed to do this with CPACK_INSTALL_SCRIPT variable.

I’ve created following script:

set(CMAKE_SOURCE_DIR @CMAKE_SOURCE_DIR@)

execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_SOURCE_DIR}/A/ ${CMAKE_SOURCE_DIR})
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_SOURCE_DIR}/B/ ${CMAKE_SOURCE_DIR})
execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory ${CMAKE_SOURCE_DIR}/A)
execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory ${CMAKE_SOURCE_DIR}/B)

In the CMakeLists.txt i’ve populated it with actual value of CMAKE_SOURCE_DIR:

configure_file(CPackScript.cmake CPackScript.cmake @ONLY)

Finally, i’ve added set(CPACK_INSTALL_SCRIPT ${CMAKE_BINARY_DIR}/CPackScript.cmake) and voila! Generated packages now have include dir with headers from both A/ and B/, while A/ and B/ dirs don’t exist.