Makefile - Only Makes One of Two Libs - c

Question

I am new to makefile and am trying to compile several files.
First is called s-chat and the others are RWT (reader-writer) and DP (dining philosopher). They both use my list library, but s-chat needs it to compile with the -m32 flags.
This is what I tried to do: I called one libMonitor.a using lib-adders.o, lib_movers.o, lib_removers.o. The other one is liblist_32 using lib_adders_32.o, lib_removers_32.o, lib_movers_32.o. For some reason, only the first of these two libraries is made, and the other says it cannot find its first dependency.
PTHREADS = /student/cmpt332/pthreads
RTT = /student/cmpt332/rtt
CC = gcc
CFLAGS = -g
CPPFLAGS = -std=c90 -Wall -pedantic
.PHONEY: all clean
ARCH = $(shell uname -sm | tr -d ' ')
ifeq ($(ARCH),SunOS)
ARCH = $(PLATFORM)
PROCESSOR = "$(shell uname -p)"
ifeq ($(PROCESSOR),i386)
ARCH = i86pc
endif
endif
all: s-chat reader-writer-test dining-philosophers-test
RWT_OBJS = reader-writer_$(ARCH).o reader-writer-monitor_$(ARCH).o Monitor_$(ARCH).o libMonitor_$(ARCH).a
reader-writer-test: CPPFLAGS += -I$(PTHREADS)
reader-writer-test: LDFLAGS += -L$(PTHREADS)/lib/$(ARCH)
reader-writer-test: LDLIBS += -lpthreads
reader-writer-test: $(RWT_OBJS)
$(CC) $(LDFLAGS) $^ $(LDLIBS) -o $#
reader-writer_$(ARCH).o: reader-writer.c reader_writer_monitor.h Monitor.h
reader-writer-monitor_$(ARCH).o: reader-writer-monitor.c reader_writer_monitor.h Monitor.h
DP_OBJS = dining-philosophers_$(ARCH).o dining-philosophers-monitor_$(ARCH).o Monitor_$(ARCH).o libMonitor_$(ARCH).a
dining-philosophers-test: CPPFLAGS += -I$(PTHREADS)
dining-philosophers-test: LDFLAGS += -L$(PTHREADS)/lib/$(ARCH)
dining-philosophers-test: LDLIBS += -lpthreads
dining-philosophers-test: $(DP_OBJS)
$(CC) $(LDFLAGS) $^ $(LDLIBS) -o $#
dining-philosophers_$(ARCH).o: dining-philosophers.c dining_philosophers_monitor.h Monitor.h
dining-philosophers-monitor_$(ARCH).o: dining-philosophers-monitor.c dining_philosophers_monitor.h Monitor.h
Monitor_$(ARCH).o: Monitor.c Monitor.h
list_adders.o: list_adders.c list.h
list_movers.o: list_movers.c list.h
list_removers.o: list_removers.c list.h
libMonitor_$(ARCH).a: list_adders.o list_movers.o list_removers.o
ar rcs $# $^
list_adders_32.o: CFLAGS += -m32
list_adders_32.o: LDFLAGS += -m32
list_adders_32.o: list_adders.c list.h
list_movers_32.o: CFLAGS += -m32
list_movers_32.o: LDFLAGS += -m32
list_movers_32.o: list_movers.c list.h
list_removers_32.o: CFLAGS += -m32
list_removers_32.o: LDFLAGS += -m32
list_removers_32.o: list_removers.c list.h
liblist_32_$(ARCH).a: list_adders_32.o list_movers_32.o list_removers_32.o
ar rcs $# $^
s-chat: CPPFLAGS += -I$(RTT)/include
s-chat: CFLAGS += -m32
s-chat: LDFLAGS += -L$(RTT)/lib/$(ARCH) -m32
s-chat: LDLIBS += -lRtt -lRttUtils
s-chat: s-chat.o liblist_32_$(ARCH).a
s-chat.o: s-chat.c
%_$(ARCH).o %_32_$(ARCH).o %.o %_32.o: %.c
$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $# $<
%: %.o
$(CC) $(LDFLAGS) $(LDLIBS) $^ -o $#
clean:
rm -rf *.o *.a reader-writer-test dining-philosophers-test s-chat
This is the error I get:
ar rcs libMonitor_Linuxx86_64.a list_adders.o list_movers.o list_removers.o
ar: list_adders.o: No such file or directory
Makefile:66: recipe for target 'libMonitor_Linuxx86_64.a' failed
make: *** [libMonitor_Linuxx86_64.a] Error 1
And if I make s-chat last, libMonitor is made, but I get the exact same error with liblist_32 and it says it can't find list_adders_32.o
Anyone know what's going on and how to fix this?
Thanks in advance!!

Answer 1

https://www.gnu.org/software/make/manual/make.html#Pattern-Intro
If a pattern rule has multiple targets, make knows that the rule’s recipe is responsible for making all of the targets. The recipe is executed only once to make all the targets.
%_$(ARCH).o %_32_$(ARCH).o %.o %_32.o: %.c
$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $# $<
Should be something like
%_$(ARCH).o: %.c
$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $# $<
%_32_$(ARCH).o: %.c
$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $# $<
%.o: %.c
$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $# $<
%_32.o: %.c
$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $# $<
But since it seems like all of your sources are in the same directory anyway, you could just delete these rules completely because make already has a built-in rule for %.o: %.c.