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Altera_Forum's avatar
Altera_Forum
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20 years ago

Makefile for simple linux device driver

Hello everyone, i'm trying to write a device driver. It is an external driver. It should be load with insmod in an running system. My problem is, that i cannot build the module (I sta...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

ifneq ($(KERNELRELEASE),)#  kbuild part of makefile
obj-m := mymodule.o
else#  Normal Makefile
ARCH := nios2nommu
CROSS_COMPILE := nios2-elf-
KERNELDIR := $(KERNEL_PLUGIN)/linux-2.6.x
BUILDDIR := /cygdrive/d/MyKernel
all::
  $(MAKE) -C $(KERNELDIR) M=`pwd` O=$(BUILDDIR) -O $@
endif

Give the above a try. I added a couple of variables (ARCH and CROSS_COMPILE)... and I've made sure that all you're variables are referenced using the standard $() syntax for Makefiles. Don't forget to add a "TAB" to the $(MAKE) line.