I'm trying to cross-compile (arm64) a custom module on my linux box. So what I did so far is:
- install the target Kernel sources
- install the cross-compiler
- enable module and build the Kernels with the cross-compiler. So far, so good, at the end I have an "Image" file correctly built
Now, I'm trying to build my module. I move in the folder where I have the sources. This is the Makefile:
bj-m := my_module.o PWD := $(shell pwd) DEBUG := 1 my_module-objs += my_module_core.o my_module_utils.o ccflags-y += -O2 -Wall -DDEBUG all: make ARCH=arm64 CROSS_COMPILE=$(CROSS) -C $(KERNEL) M=$(PWD) modules
Then I try to run the build with
make KERNEL=/tmp/linux-kernel-src/ CROSS=aarch64-linux-gnu-
and I get this result:
make: Entering directory '/tmp/linux-kernel-src' Building modules, stage 2. MODPOST 0 modules make: Leaving directory '/tmp/linux-kernel-src'
So it looks like I have no errors, but the build process is just skipping all the files contained in my current folder which should be compiled and nothing happens.
I think I'm missing something obvious...but I'm not catching what...do you have any idea?
I saw another post with a very similar issue (Building kernel module), but this had a square bracket in the path and this is not my case.
Thanks a lot!