build/test/project-test3/lib3/project-root.jam

use-project /lib2/helper : ../lib2/helper ;

import property ;

rule mfc-compile ( target : sources * : property-set * )
{
    PROPERTIES on $(target) = [ 
      property.as-path [ property.remove incidental : $(property-set) ] ] ;      
}

actions mfc-compile
{
    echo $(PROPERTIES) > $(<)
    echo $(>) >> $(<)
}

IMPORT $(__name__) : mfc-compile : : mfc-compile ;