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hi..

Submitted by Anonymous
on March 21, 2007 - 2:40am

make is giving this error "command commence before target"
here is my make file

ifneq($(KERNELRELEASE),)
CC=gcc
MODCFLAGS := -Wall -DMODULE -D__KERNEL__ -DLINUX
obj-m := hello.o
$(CC) $(MODCFLAGS) -c hello.c

else
KERNELDIR ?= /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
default:
$(MAKE) -C $(KERNELDIR) M=$(PWD) modules

endif

here iam trying to build kernel module hello.c which displays hello world frm kernel space.
can any body help me plz...

thanx in advance

‹ 2.6.20.x dims my laptop-screen DMA driver for linux 2.6.14 ›

hello..

strcmp
on
March 21, 2007 - 3:30am

my dog ate my keyboard

plz help

:)

Bad Makefile

swm (not verified)
on
March 22, 2007 - 4:06pm

I am not very familiar with makefiles but I can tell you what is causing the error. The following Makefile runs ok on my system.

ifneq ($(KERNELRELEASE),)
	obj-m := hello.o
	CC=gcc
	MODCFLAGS := -Wall -DMODULE -D__KERNEL__ -DLINUX
#	$(CC) $(MODCFLAGS) -c hello.c

else
	KERNELDIR ?= /lib/modules/$(shell uname -r)/build
	PWD := $(shell pwd)
default:
	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules

endif

Note the space after "ifneq". If you are not already doing so, reference http://lwn.net/images/pdf/LDD3/ch02.pdf

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