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.

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 # 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 )

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

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

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A typical use for this macro would be:

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

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