CMakeUserFindWix

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  # - Try to find Windows Installer XML
  # See http://wix.sourceforge.net
  #
  # The follwoing variables are optionally searched for defaults
  #  WIX_ROOT_DIR:            Base directory of WIX2 tree to use.
  #
  # The following are set after configuration is done: 
  #  WIX_FOUND
  #  WIX_ROOT_DIR
  #  WIX_CANDLE
  #  WIX_LIGHT
  # 
  # 2009/02 Petr Pytelka (pyta at lightcomp.cz)
  #
  
  MACRO(DBG_MSG _MSG)
  #  MESSAGE(STATUS "${CMAKE_CURRENT_LIST_FILE}(${CMAKE_CURRENT_LIST_LINE}):\n ${_MSG}")
  ENDMACRO(DBG_MSG)
  
  
  # typical root dirs of installations, exactly one of them is used
  SET (WIX_POSSIBLE_ROOT_DIRS
    "${WIX_ROOT_DIR}"
    "$ENV{WIX}"
    "$ENV{WIX_ROOT_DIR}"
    "$ENV{ProgramFiles}/Windows Installer XML"
    )
  
  
  #DBG_MSG("DBG (WIX_POSSIBLE_ROOT_DIRS=${WIX_POSSIBLE_ROOT_DIRS}")
  
  #
  # select exactly ONE WIX base directory/tree 
  # to avoid mixing different version headers and libs
  #
  FIND_PATH(WIX_ROOT_DIR 
    NAMES 
    bin/candle.exe
    bin/light.exe
    PATHS ${WIX_POSSIBLE_ROOT_DIRS})
  DBG_MSG("WIX_ROOT_DIR=${WIX_ROOT_DIR}")
  
  
  #
  # Logic selecting required libs and headers
  #
  SET(WIX_FOUND OFF)
  IF(WIX_ROOT_DIR)
    SET(WIX_FOUND ON)
  ENDIF(WIX_ROOT_DIR)
  
  
  # display help message
  IF(NOT WIX_FOUND)
    # make FIND_PACKAGE friendly
    IF(NOT WIX_FIND_QUIETLY)
      IF(WIX_FIND_REQUIRED)
        MESSAGE(FATAL_ERROR
          "Windows Installer XML required but some files not found. Please specify it's location with WIX_ROOT_DIR env. variable.")
      ELSE(WIX_FIND_REQUIRED)
        MESSAGE(STATUS 
          "ERROR: Windows Installer XML was not found.")
      ENDIF(WIX_FIND_REQUIRED)
    ENDIF(NOT WIX_FIND_QUIETLY)
  ELSE(NOT WIX_FOUND)
    SET(WIX_CANDLE ${WIX_ROOT_DIR}/bin/candle.exe)
    SET(WIX_LIGHT ${WIX_ROOT_DIR}/bin/light.exe)
  #  MESSAGE(STATUS "Windows Installer XML found.")
  ENDIF(NOT WIX_FOUND)
  
  
  MARK_AS_ADVANCED(
    WIX_ROOT_DIR
    WIX_CANDLE
    WIX_LIGHT
    )
  
  #
  # Call wix compiler
  #
  # Parameters:
  #  _sources - name of list with sources
  #  _obj - name of list for target objects
  #
  MACRO(WIX_COMPILE _sources _objs _extra_dep)
    DBG_MSG("WIX compile: ${${_sources}}")
    FOREACH (_current_FILE ${${_sources}})
      GET_FILENAME_COMPONENT(_tmp_FILE ${_current_FILE} ABSOLUTE)
      GET_FILENAME_COMPONENT(_basename ${_tmp_FILE} NAME_WE)
  
      SET (SOURCE_WIX_FILE ${_tmp_FILE} )
      DBG_MSG("WIX source file: ${SOURCE_WIX_FILE}")
  
      # Check whether source exists
      IF(EXISTS ${SOURCE_WIX_FILE})
      ELSE(EXISTS ${SOURCE_WIX_FILE})
        MESSAGE(FATAL_ERROR "Path not exists: ${SOURCE_WIX_FILE}")
      ENDIF(EXISTS ${SOURCE_WIX_FILE})
  
      SET (OUTPUT_WIXOBJ ${_basename}.wixobj )
  
      DBG_MSG("WIX output: ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_WIXOBJ}")
      DBG_MSG("WIX command: ${WIX_CANDLE}")
  
      ADD_CUSTOM_COMMAND( 
        OUTPUT    ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_WIXOBJ}
        COMMAND   ${WIX_CANDLE}
        ARGS      ${WIX_CANDLE_FLAGS} ${SOURCE_WIX_FILE}
        DEPENDS   ${SOURCE_WIX_FILE} ${${_extra_dep}}
        COMMENT   "Compiling ${SOURCE_WIX_FILE} -> ${OUTPUT_WIXOBJ}"
      )
      SET(${_objs} ${${_objs}} ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_WIXOBJ} )
      DBG_MSG("WIX compile output: ${${_objs}}")
  
    ENDFOREACH (_current_FILE)
  ENDMACRO(WIX_COMPILE)
  
  #
  # Call wix compiler
  #
  # Parameters:
  #  _sources - name of list with sources
  #  _obj - name of list for target objects
  #
  MACRO(WIX_COMPILE_ALL _target _sources _extra_dep)
    DBG_MSG("WIX compile all: ${${_sources}}, dependencies: ${${_extra_dep}}")
  
    ADD_CUSTOM_COMMAND( 
        OUTPUT    ${_target}
        COMMAND   ${WIX_CANDLE}
        ARGS      ${WIX_CANDLE_FLAGS} -out "${_target}" ${${_sources}}
        DEPENDS   ${${_sources}} ${${_extra_dep}}
        COMMENT   "Compiling ${${_sources}} -> ${_target}"
      )
  
  ENDMACRO(WIX_COMPILE_ALL)
  
  
  #
  # Link MSI file
  #
  # Parameters
  #  _target - Name of target file
  #  _sources - Name of list with sources
  #
  MACRO(WIX_LINK _target _sources _loc_files)
    DBG_MSG("WIX command: ${WIX_LIGHT}\n WIX target: ${_target} objs: ${${_sources}}")
  
    SET( WIX_LINK_FLAGS_A "" )
    # Add localization
    FOREACH (_current_FILE ${${_loc_files}})
      SET( WIX_LINK_FLAGS_A ${WIX_LINK_FLAGS_A} -loc "${_current_FILE}" )
      DBG_MSG("WIX link localization: ${_current_FILE}")
    ENDFOREACH (_current_FILE)
    DBG_MSG("WIX link flags: ${WIX_LINK_FLAGS_A}")
  
    ADD_CUSTOM_COMMAND( 
        OUTPUT    ${_target}
        COMMAND   ${WIX_LIGHT}
        ARGS      ${WIX_LINK_FLAGS_A} -out "${_target}" ${${_sources}}
        DEPENDS   ${${_sources}}
        COMMENT   "Linking ${${_sources}} -> ${_target}"
      )
  
  ENDMACRO(WIX_LINK)

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