Maintaining archives with makefiles

[Donald S. Hearth]

    I need some help. I am trying to create a makefile that will maintain
    an archive. Here is what I have so far:

LIB=foo.a

OBJECTS= \
                $(LIB)(foo1.o) \
                $(LIB)(foo2.o) \
                $(LIB)(foo3.o)

$(LIB): $(OBJECTS)
        $(CC) -c $(CFLAGS) $(?:.o=.c)
        ar crv ../../lib/$(LIB) `lorder *.o | tsort`
        $(RANLIB) $(LIB)
        rm -f *.o

.c.a :;

    The problem with this makefile is that if foo2.c has a compiler error,
    after I fix the problem and rerun make, all three source files get 
    remade. Now, for 3 source files, it is no big deal, but if there are
    100 or more source files, it can be a BIG pain. Can somebody suggest
    a solution to this problem?

-- 
***************************************************************************
*  Donald S. Hearth        *   address: hearth at unify.com                  *
*  UNIFY Corporation       *                                              *
*  Sacramento, CA          *   Go 49ers, A's, and LA Kings!               *