23 lines
962 B
Makefile
23 lines
962 B
Makefile
# This is a standard makefile for building a kernel module.
|
|
# It looks a bit backwards compared to a normal makefile, but that's because
|
|
# the kernel supplies its own sub-makefile that we use to build the module.
|
|
#
|
|
# The M= option tells the kernel's makefile where to find the module's source
|
|
# files, and the -C option sets the context directory for make.
|
|
#
|
|
# The obj-m variable tells the kernel's makefile what the module's object file
|
|
# should be called. In this case, it's demo_module.o. This is how the sub-makefile
|
|
# infers the name of the module's source file.
|
|
#
|
|
# This build is highly sensitive to compiler version, and requires the system gcc
|
|
# to be the same version as the gcc that built the current kernel.
|
|
#
|
|
# For more info, see: https://www.kernel.org/doc/html/latest/kbuild/modules.html
|
|
|
|
obj-m = chardev.o
|
|
|
|
all:
|
|
make -C /lib/modules/$(shell uname -r)/build/ M=$(PWD) modules
|
|
|
|
clean:
|
|
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
|