Cross-compiling of kernel module for ARM architecture
11,520
Solution 1
A quick fix, change from:
#include <asm/bitsperlong.h>
to:
#include <asm-generic/bitsperlong.h>
Solution 2
shell uname -r
means that this Makefile will build the module for you host(x86) system and not for ARM.
You need to specify the source directory of your ARM Kernel. You may use following Makefile to cross-compile your module.
Makefile:
CC=$(CROSS_COMPILE)gcc
# If KERNELRELEASE is defined, we've been invoked from the
# kernel build system and can use its language.
ifneq ($(KERNELRELEASE),)
obj-m := modulename.o
# Otherwise we were called directly from the command
# line; invoke the kernel build system.
else
KERNELDIR ?= /path/to/kernel/linux
PWD := $(shell pwd)
default:
${MAKE} -C ${KERNEL_SOURCE} SUBDIRS=${PWD} modules
clean:
${MAKE} -C ${KERNEL_SOURCE} SUBDIRS=${PWD} clean
endif
Author by
Admin
Updated on June 04, 2022Comments
-
Admin almost 2 years
I'm trying to make a .ko file for ARM from a linux x86 machine. I tried the following Makefile:
1 obj-m +=helloworldtest_module.o 2 modules_install: 3 make ARCH=$(ARCH) CC=$(CROSS_COMPILER) -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules 4 clean: 5 make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
... but I got an error on giving
make -f Makefile ARCH=arm CROSS_COMPILER=arm-linux-gnueabi-gcc
in command prompt as follows:make ARCH=arm CC=arm-linux-gnueabi-gcc -C /lib/modules/3.2.0-29-generic/build M=/home/terenesas/sample modules make[1]: Entering directory `/usr/src/linux-headers-3.2.0-29-generic' CC [M] /home/terenesas/sample/helloworldtest_module.o In file included from /usr/src/linux-headers-3.2.0-29-generic/arch/arm/include/asm/types.h:4:0, from include/linux/types.h:4, from include/linux/list.h:4, from include/linux/module.h:9, from /home/terenesas/sample/helloworldtest_module.c:2: include/asm-generic/int-ll64.h:11:29: fatal error: asm/bitsperlong.h: No such file or directory compilation terminated. make[2]: *** [/home/terenesas/sample/helloworldtest_module.o] Error 1 make[1]: *** [_module_/home/terenesas/sample] Error 2 make[1]: Leaving directory `/usr/src/linux-headers-3.2.0-29-generic' make: *** [modules_install] Error 2
What did I do wrong?