Make Not Setting Prerequisite List

[Kent Wilson]

All,

I am trying to compute a prerequisite list based on
the target's name. I have tried three approaches which
I would think would work but none have. In each case
the list of prerequisites ($^) is not set and make does
not attempt any recompilation. See the attachment for
the Makefiles.

Any ideas?

TIA,

Kent

address@hidden

PGMS = pgm1
pgm1_OBJS = pgm1obj1.o pgm1obj2.o pgm1obj3.o

all: $(PGMS)
        @echo Makefile PGMS $(PGMS)

#
# case A (This doesn't set $^, but note that $($(@)_OBJS) is okay).
#
$(PGMS): $($(@)_OBJS)
        @echo $$\@ = $@, $$^ = $^, $($(@)_OBJS)

#
# case B (This works as expected)
#
#$(PGMS): $(pgm1_OBJS)
#       @echo $$\@ = $@, $$^ = $^, $($(@)_OBJS)

PGMS = pgm1 pgm2

pgm1: OBJS = pgm1obj1.o pgm1obj2.o pgm1obj3.o
pgm2: OBJS = pgm2obj1.o pgm2obj2.o pgm2obj3.o

all: $(PGMS)
        @echo Makefile PGMS $(PGMS)

#
# OBJS gets set correctly for each target but $^ does not get set.
#
$(PGMS): $(OBJS)
        @echo $$\@ = $@, $$^ = $^, $(OBJS)

PGMS = pgm1
pgm1_OBJS = pgm1obj1.o pgm1obj2.o pgm1obj3.o

all: $(PGMS)
        @echo Makefile PGMS $(PGMS)

#
# Computed variables are correct but $^ doesn't get set.
#
$(PGMS): $($(addsuffix _OBJS, $(@)))
        @echo $$\@ = $@, $$^ = $^, $($(addsuffix _OBJS,$(@)))