Cross compiling a kernel module

Question

I\'m trying to cross compile a helloworld kernel (2.6.x) module for ARM architecture on my intel x86 host.

The codesourcery tool chain for ARM is located at: /ho

Answer 1

adding export at the end of your Makefile variable declarations will make them available to subshells. and add the dash to the CROSS_COMPILE prefix as JayM pointed out, and M instead of SUBDIRS as user502515 answered.

and it's generally a good idea to use := rather than = in a Makefile, so the variable only gets interpolated once. really doesn't matter in this particular case though.

ARCH := arm
CROSS_COMPILE := arm-none-linux-gnueabi-
obj-m := Hello.o
KDIR := /home/ravi/workspace/hawk/linux-omapl1
PWD := $(shell pwd)
export
default:
          $(MAKE) -C $(KDIR) M=$(PWD) modules
clean:
          $(MAKE) -C $(KDIR) M=$(PWD) clean