error: undefined symbol ... during make

[jsulm]

@elbnacht Well, you're passing arguments to the compiler which it does not know

[elbnacht]

I thought the makefile is simple (without any arguments):

# makefile for a wdt_dio kernel module
#
CC := emcc

obj-m += wdt_dio.o

KDIR := /lib/modules/$(shell uname -r)/build
CDIR := $(shell pwd)

all:
	$(MAKE) -C $(KDIR) SUBDIRS=$(CDIR) modules
clean:

[lorn.potter]

Emscripten/wasm does not have access to the kernel, so trying to build kernel modules for wasm will not work. It lives in the web browser sandbox alongside javascript.