rule filtered-target ( name : message + : sources + : requirements * )

{

    message $(name)-message : warning: $(message) ;

    alias $(name) : $(sources) : $(requirements) ;

    alias $(name) : $(name)-message ;

    local p = [ project.current ] ;

    $(p).mark-target-as-explicit $(name) ;

    $(p).mark-target-as-explicit $(name)-message ;

}

    for local l in $(libraries)

    {

        if $(l) = locale

        {

            filtered-target $(l)-for-install :

                Skipping Boost.Locale library with threading=single. :

                libs/$(l)/build : <threading>multi ;

        }

        else if $(l) = wave

        {

            filtered-target $(l)-for-install :

                Skipping Boost.Wave library with threading=single. :

                libs/$(l)/build : <threading>multi ;

        }

        else if $(l) = thread

        {

            filtered-target $(l)-for-install :

                Skipping Boost.Thread library with threading=single. :

                libs/$(l)/build : <threading>multi ;

        }

        else

        {

            alias $(l)-for-install : libs/$(l)/build ; 

        }

    }

    local library-targets = $(libraries)-for-install ;