CODEWITHSUNDEEP
linuxmodulemakefilelinkerkernel
raddirad
raddirad

Reputation: 331

Kernel Makefiel Link against Module

I am currently trying to write some Kernel Module code. I am using the functions of an existing Kernel Module. The hearders are included in my .c file but I dont know how to link my code with the Kernel Module properly

in normal userspace Makefiles I would know but not how to do this with Kernel Modules

Any suggestions?

Here's my Makefile

KERNELDIR ?= /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
INC := -I/usr/src/kernels/$(shell uname -r)/include

obj-m := scif.o 

all:
    $(MAKE) V=1 -C $(KERNELDIR) M=$(PWD) modules
clean:
    make -C $(KERNELDIR) M=$(PWD) clean

Upvotes: 0

Views: 89

Answers (1)

srd
srd

Reputation: 1267

You do not 'link' code between modules. Beside including the header files, a module can call only functions that are exported (with EXPORT_SYMBOL or EXPORT_SYMBOL_GPL ..etc) either in the main Kernel or in other modules. Also, make sure that module dependencies in modeules.dep are correct or the module will complain when it is loaded.

Upvotes: 1

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