func (s *LibrariesLoader) Run(ctx *types.Context) error {
	builtInLibrariesFolders := ctx.BuiltInLibrariesFolders
	builtInLibrariesFolders, err := utils.AbsolutizePaths(builtInLibrariesFolders)
	if err != nil {
		return i18n.WrapError(err)
	}
	sortedLibrariesFolders := []string{}
	sortedLibrariesFolders = utils.AppendIfNotPresent(sortedLibrariesFolders, builtInLibrariesFolders...)

	platform := ctx.TargetPlatform
	debugLevel := ctx.DebugLevel
	logger := ctx.GetLogger()

	actualPlatform := ctx.ActualPlatform
	if actualPlatform != platform {
		sortedLibrariesFolders = appendPathToLibrariesFolders(sortedLibrariesFolders, filepath.Join(actualPlatform.Folder, constants.FOLDER_LIBRARIES))
	}

	sortedLibrariesFolders = appendPathToLibrariesFolders(sortedLibrariesFolders, filepath.Join(platform.Folder, constants.FOLDER_LIBRARIES))

	librariesFolders := ctx.OtherLibrariesFolders
	librariesFolders, err = utils.AbsolutizePaths(librariesFolders)
	if err != nil {
		return i18n.WrapError(err)
	}
	sortedLibrariesFolders = utils.AppendIfNotPresent(sortedLibrariesFolders, librariesFolders...)

	ctx.LibrariesFolders = sortedLibrariesFolders

	var libraries []*types.Library
	for _, libraryFolder := range sortedLibrariesFolders {
		subFolders, err := utils.ReadDirFiltered(libraryFolder, utils.FilterDirs)
		if err != nil {
			return i18n.WrapError(err)
		}
		for _, subFolder := range subFolders {
			library, err := makeLibrary(filepath.Join(libraryFolder, subFolder.Name()), debugLevel, logger)
			if err != nil {
				return i18n.WrapError(err)
			}
			libraries = append(libraries, library)
		}
	}

	ctx.Libraries = libraries

	headerToLibraries := make(map[string][]*types.Library)
	for _, library := range libraries {
		headers, err := utils.ReadDirFiltered(library.SrcFolder, utils.FilterFilesWithExtensions(".h", ".hpp", ".hh"))
		if err != nil {
			return i18n.WrapError(err)
		}
		for _, header := range headers {
			headerFileName := header.Name()
			headerToLibraries[headerFileName] = append(headerToLibraries[headerFileName], library)
		}
	}

	ctx.HeaderToLibraries = headerToLibraries

	return nil
}