make: Remaking Loaded Objects

 
 12.2.2 How Loaded Objects Are Remade
 ------------------------------------
 
 Loaded objects undergo the same re-make procedure as makefiles (See
 How Makefiles Are Remade Remaking Makefiles.).  If any loaded object is
 recreated, then 'make' will start from scratch and re-read all the
 makefiles, and reload the object files again.  It is not necessary for
 the loaded object to do anything special to support this.
 
    It's up to the makefile author to provide the rules needed for
 rebuilding the loaded object.