CamiTKInstallAllHeaders.h

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camitk_install_all_headers(){)

    set(options "")
    set(oneValueArgs COMPONENT GROUP)
    set(multiValueArgs "")
    cmake_parse_arguments(CAMITK_INSTALL_ALL_HEADERS "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN} )
  
    # The base include directories
    set(CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR ${CMAKE_BINARY_DIR}/include/${CAMITK_SHORT_VERSION_STRING})
    set(CAMITK_INSTALL_ALL_HEADERS_INSTALL_RELATIVE_DIR include/${CAMITK_SHORT_VERSION_STRING})

    # Get action, component or library name without its prefix
    set(CAMITK_INSTALL_ALL_HEADERS_TARGET_NAME ${CAMITK_INSTALL_ALL_HEADERS_COMPONENT})
    string(REGEX REPLACE "^component-|^component_|^action-|^action_|^library_|^library-" "" CAMITK_INSTALL_ALL_HEADERS_COMPONENT "${CAMITK_INSTALL_ALL_HEADERS_COMPONENT}")

    # Check group directory
    if(CAMITK_INSTALL_ALL_HEADERS_GROUP)
        # Create group directory if not already existing
        if (NOT EXISTS "${CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR}/${CAMITK_INSTALL_ALL_HEADERS_GROUP}" AND NOT CAMITK_INSTALL_ALL_HEADERS_DIRECTORY)
            add_custom_command( TARGET ${CAMITK_INSTALL_ALL_HEADERS_TARGET_NAME}
                                POST_BUILD
                                COMMAND ${CMAKE_COMMAND} -E make_directory ${CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR}/${CAMITK_INSTALL_ALL_HEADERS_GROUP}
                                COMMENT "Creating build-time group include dir ${CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR}/${CAMITK_INSTALL_ALL_HEADERS_GROUP}"
                                VERBATIM
                              )
        endif()
        # Update base dirs 
        set(CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR ${CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR}/${CAMITK_INSTALL_ALL_HEADERS_GROUP})
        set(CAMITK_INSTALL_ALL_HEADERS_INSTALL_RELATIVE_DIR ${CAMITK_INSTALL_ALL_HEADERS_INSTALL_RELATIVE_DIR}/${CAMITK_INSTALL_ALL_HEADERS_GROUP})
    endif()

    # Create component directory if not already existing
    if (NOT EXISTS "${CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR}/${CAMITK_INSTALL_ALL_HEADERS_COMPONENT}" AND NOT CAMITK_INSTALL_ALL_HEADERS_DIRECTORY)
        add_custom_command( TARGET ${CAMITK_INSTALL_ALL_HEADERS_TARGET_NAME}
                            POST_BUILD
                            COMMAND ${CMAKE_COMMAND} -E make_directory ${CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR}/${CAMITK_INSTALL_ALL_HEADERS_COMPONENT}
                            COMMENT "Creating build-time include dir ${CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR}/${CAMITK_INSTALL_ALL_HEADERS_COMPONENT}"
                            VERBATIM
                          )
    endif()
    # Update base dirs 
    set(CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR ${CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR}/${CAMITK_INSTALL_ALL_HEADERS_COMPONENT})
    set(CAMITK_INSTALL_ALL_HEADERS_INSTALL_RELATIVE_DIR ${CAMITK_INSTALL_ALL_HEADERS_INSTALL_RELATIVE_DIR}/${CAMITK_INSTALL_ALL_HEADERS_COMPONENT})
   
    # Build time installation
    file(GLOB_RECURSE HEADERS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}/ *.h)
    foreach(HEADER ${HEADERS})
        # Get the subdirectory name of the header
        string(REGEX MATCH ".*/" SUBDIR ${HEADER})
        
        # Create subdirectory if not already existing
        if(NOT EXISTS "${CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR}/${SUBDIR}" AND NOT CAMITK_INSTALL_ALL_HEADERS_${SUBDIR})
            # Create directory at build time
            add_custom_command( TARGET ${CAMITK_INSTALL_ALL_HEADERS_TARGET_NAME}
                                POST_BUILD
                                COMMAND ${CMAKE_COMMAND} -E make_directory ${CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR}/${SUBDIR}
                                COMMENT "Creating build-time include dir ${CAMITK_INSTALL_ALL_HEADERS_COMPONENT}/${SUBDIR}"
                                VERBATIM
                            )
            set(CAMITK_INSTALL_ALL_HEADERS_${SUBDIR} "CREATED") # To avoid creating the directory another time
        endif()
        
        # Install header at build time
        add_custom_command( TARGET ${CAMITK_INSTALL_ALL_HEADERS_TARGET_NAME}
                            POST_BUILD
                            COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_SOURCE_DIR}/${HEADER} ${CAMITK_INSTALL_ALL_HEADERS_BUILD_BASE_DIR}/${SUBDIR}
                            COMMENT "Installing build-time header ${CAMITK_INSTALL_ALL_HEADERS_COMPONENT}/${HEADER}"
                            VERBATIM
                          )
    endforeach()
    
    # Install time, copy all the .h directories structure
    install( DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
             COMPONENT ${CAMITK_INSTALL_ALL_HEADERS_TARGET_NAME} 
             DESTINATION ${CAMITK_INSTALL_ALL_HEADERS_INSTALL_RELATIVE_DIR}
             FILES_MATCHING 
             PATTERN "*.h"
           )   
    
end(){)