CMakeMacroGatherProjectFiles

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This macro recursively collects the files from a project directory and caches the list for future use. Tailor the extensions that are included in the list according to your needs.

---

  # add extra sources to the defined project
  MACRO ( GatherProjectFiles ProjectName ProjectDir ProjectSources )
  
    #look for the cache file
    SET ( FoundCacheFile "FoundCacheFile-NOTFOUND" )
    FIND_FILE ( FoundCacheFile ${ProjectName}Sources.cmake PATHS ${CMAKE_CURRENT_BINARY_DIR} NO_DEFAULT_PATH NO_CMAKE_ENVIRONMENT_PATH NO_CMAKE_PATH NO_SYSTEM_ENVIRONMENT_PATH NO_CMAKE_SYSTEM_PATH)
  
    IF ( FoundCacheFile )
      # read cached file list
      MESSAGE ( STATUS "    Found cache file ${FoundCacheFile}" )
      INCLUDE ( ${CMAKE_CURRENT_BINARY_DIR}/${ProjectName}Sources.cmake )
  
    ELSE ( FoundCacheFile )
      # get the file lists
      SET ( Dir ${CMAKE_HOME_DIRECTORY}/${ProjectDir} )
  
      # add your other extensions here (this could be probably done nicer)
      FILE ( GLOB_RECURSE DirSources ${Dir}/*.c ${Dir}/*.cpp ${Dir}/*.h ${Dir}/*.inl ${Dir}/*.rc ${Dir}/*.ico )
  
      # write cached file list
      MESSAGE ( STATUS "    Generating ${ProjectName}Sources.cmake" )
      STRING ( CONFIGURE "@DirSources@" TempString @ONLY )
      STRING ( REPLACE ";" " " "DirSourcesAsString" "${TempString}" )
      CONFIGURE_FILE ( ${CMAKE_HOME_DIRECTORY}/CMake/SourceFilesTemplate.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/${ProjectName}Sources.cmake @ONLY )
  
    ENDIF ( FoundCacheFile )
    SET ( "${ProjectSources}" ${DirSources} )
  ENDMACRO ( GatherProjectFiles )

---

The template file (located in CMAKE_HOME_DIRECTORY\CMake\SourceFilesTemplate.cmake.in) looks like this:

  # Cache source files
  
  # All sources
  SET ( DirSources @DirSourcesAsString@ )

---

A typical use for this macro would be:

  GatherProjectFiles ( MyLib src/MyLib MyLibSources )
  ADD_LIBRARY (MyLib SHARED ${MyLibSources} )

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