Makefiles for loadable module development

In linux module development you should use the kernel Makefile to compile your source. You have to write a tiny Makefile to do it. Many times the module built from only one source file, but not always. To build a module download the kernel source and use the same toolchain you used in the kernel build process.

The makefile for one source code - simple.c
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CC=gcc

.PHONY: modules all

obj-m := simple.o
KERNELDIR := /path/to/linux/kernel/source
PWD := $(shell pwd)

all: modules

module:
$(MAKE) -C $(KERNELDIR) M=$(PWD) modules

clean:
rm *.ko *.o
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Makefile for many source files module
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CC=gcc

.PHONY: modules all

obj-m := multi.o
multi-objs := file1.o file2.o file3.o
KERNELDIR := /path/to/linux/kernel/source
PWD := $(shell pwd)

all: modules

module:
$(MAKE) -C $(KERNELDIR) M=$(PWD) modules

clean:
rm *.ko *.o

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