efl

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# macro to create a eolian generated c source file
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#
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# macro adds a generate rule, which depends on the original file the rule will output file.x
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#
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# The passed include snippet will just be added to the command
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macro(_rule_eox file include deps)
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    add_custom_command(
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       OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/${file}.x
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       COMMAND eolian_gen ${include} -g c -o c:${CMAKE_CURRENT_SOURCE_DIR}/${file}.x ${CMAKE_CURRENT_SOURCE_DIR}/${file}
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       DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${file}
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       DEPENDS ${deps}
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    )
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endmacro()
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# macro to create a eolian generated header file
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#
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# other details are like the eox rule
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macro(_rule_eoh file include deps)
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    add_custom_command(
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       OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/${file}.h
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       COMMAND eolian_gen ${include} -g h -o h:${CMAKE_CURRENT_SOURCE_DIR}/${file}.h ${CMAKE_CURRENT_SOURCE_DIR}/${file}
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       DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${file}
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       DEPENDS ${deps}
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    )
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endmacro()
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# Can be used to create .eo.x , .eo.h, .eot.h generator rules.
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# <file>.eo files are generated into <file>.eo.x and <file>.eo.h files
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# <file>.eot files are generated into <file>.eot.h files
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# The standard include path of efl eolian files is automatically added to the includes
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#
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# build_files - A list of files
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# relative_include_dirs - A list of dirs to include
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#
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# If one of the included files is changed the file will be rebuilded at the next
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# make call
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#
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# The macro scans for .eo files, hey have to be in the build_files.
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# The generator rules are just executed if the file is a dependecy of some lib/executable.
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function(eo_rule_create build_files relative_include_dirs)
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   string(REPLACE "\n" "" EOLIAN_EO_DIR_WITHOUT_NEWLINE "${EOLIAN_EO_DIR}")
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   # add std includes
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   list(APPEND include_dirs
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      ${EOLIAN_EO_DIR_WITHOUT_NEWLINE}
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    )
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   # convert relative to absolute
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   foreach(relative_include_dir ${relative_include_dirs})
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      list(APPEND include_dirs
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        ${CMAKE_CURRENT_SOURCE_DIR}/${relative_include_dir}
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      )
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   endforeach()
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   # work with the absolute paths
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   foreach(include_cmd ${include_dirs})
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      # build include cmd
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      string(CONCAT includes "${includes}" " -I${include_cmd}")
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      # fetch dep files
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      file(GLOB_RECURSE files "${include_cmd}/*.eo")
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      foreach(file ${files})
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        list(APPEND dep_files ${file})
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      endforeach()
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   endforeach()
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   string(REPLACE " " ";" includes "${includes}")
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   foreach(file ${build_files})
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      get_filename_component(ext ${file} EXT)
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      if (ext MATCHES "^\\.eo$")
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         _rule_eoh("${file}" "${includes}" "${dep_files}")
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         _rule_eox("${file}" "${includes}" "${dep_files}")
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      endif()
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      if (ext MATCHES "^\\.eot$")
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         _rule_eoh("${file}" "${includes}" "${dep_files}")
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      endif()
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    endforeach()
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endfunction()
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