main-target class main-target : abstract-target { rule generate ( property-set ) # Methods inherited from abstract-target rule name ( ) rule project ( ) rule location ( ) rule full-name ( ) } A main-target represents a named top-level target in a Jamfile. generate Main Target Method rule generate ( property-set ) Overrides abstract-target.generate. Select an alternative for this main target, by finding all alternatives whose requirements are satisfied by property-set and picking the one with the longest requirements set. Returns the result of calling generate on that alternative. On success, returns: a property-set with the usage requirements to be applied to dependents a list of produced virtual targets, which may be empty.