On Tue, Jun 22, 2004 at 01:36:18PM +0200, Christophe Lucas wrote: > Dhiman, Gaurav (Gaurav.Dhiman@ca.com) wrote: > > > > Hi, > > > > I tried what you suggested, but when I run that command it gives a lot > > of linking errors saying multiple definations of functions. > > > > I looked for the same on net and found one simple makefile containing > > the following command for linking: > > > > ld -m elf_i386 -r -o pipe.c fifo.c msg_q.c main.c > > I think the problem here is the -o (output file name), your object is in pipe.c > > When I include this linking command in my Makefile, it does not give any > > error and creates the corresponding .o file for each .c file but does > > not create the single relocatable object file through which I can load > > or unload the module. I do not get any error with following makefile, > > but at the same time it does not link the .o file to make final module. > > Please let me know what the problem is > > > > Also please explain me about -m option of 'ld', whats the use of this > > option ? > > > > I am pasting below my Makefile for your reference > > > > ****************************************** > > Makefile - Starts > > ****************************************** > > > > KERNELDIR = /usr/src/linux-2.4 > > > > CC = gcc > > > > include $(KERNELDIR)/include/linux/config.h > > > > CFLAGS = -I$(KERNELDIR)/include -D__KERNEL__ -DMODULE \ > > -O -Wall -c > > > > LFLAGS = -m elf_i386 -r -o > > OBJ=main.o pipe.o fifo.o msg_q.o > > > > > ifdef CONFIG_SMP > > CFLAGS += -DSMP > > endif > > > > all: driver.o > > > > driver.o: main.o pipe.o fifo.o msg_q.o > > ld $(LFLAGS) main.o pipe.o fifo.o msg_q.o > ld $(LFLAGS) $(OBJ) -o $@ > > instead of : > > > main.o: main.c > > $(CC) $(CFLAGS) main.c > > > > fifo.o: fifo.c > > $(CC) $(CFLAGS) fifo.c > > > > pipe.o: pipe.c > > $(CC) $(CFLAGS) pipe.c > > > > msg_q.o: msg_q.c > > $(CC) $(CFLAGS) msg_q.c > > put : > > .c.o: $(OBJ) > $(CC) $(CFLAGS) -c $< > > It is only esthetic :) > > > > > > #all: main.o pipe.o fifo.o msg_q.o > > # $(CC) $(CFLAGS) main.c pipe.c fifo.c msg_q.c > > > > clean: > > rm -f *.o *~ core > > > > ****************************************** > > Makefile - Ends > > ****************************************** > -- > Amicalement > > Christophe > > * GNU/Linux & UNIX developer and network administrator > * Membre RotomaLUG (http://www.rotomalug.org) > * Registered User #271267 > * Email: c.lucas@ifrance.com > * Web Site: http://odie.mcom.fr/~clucas/ > > -- > Kernelnewbies: Help each other learn about the Linux kernel. > Archive: http://mail.nl.linux.org/kernelnewbies/ > FAQ: http://kernelnewbies.org/faq/ > > > +++++++++++++++++++++++++++++++++++++++++++ > This Mail Was Scanned By Mail-seCure System > at the Tel-Aviv University CC. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
