Makefile

   1 # change KERNELSRC to the location of your kernel build tree only if
   2 # autodetection does not work
   3 #KERNELSRC=/usr/src/linux
   4 #KERNELSRC=/usr/src/kernel-source-2.4.21-acpi-i2c-lmsensors
   5 KERNELSRC?=/lib/modules/`uname -r`/build
   6 KERNELVERSION=$(shell for f in $(KERNELSRC)/include/linux/{utsrelease.h,version.h}; do \
   7         test -f $$f && awk -F\" '/RELEASE/ {print $$2}' $$f && break; \
   8         done)
   9
  10 KERNELMAJOR=$(shell echo $(KERNELVERSION)|head -c3)
  11 KBUILD_BASENAME=
  12
  13 # next line is for kernel 2.6, if you integrate the driver in the kernel tree
  14 # /usr/src/linux/drivers/acer_acpi - or something similar
  15 # don't forget to add the following line to the parent dir's Makefile:
  16 # (/usr/src/linux/drivers/Makefile)
  17 # obj-m                           += acer_acpi/
  18 obj-m += acer_acpi.o
  19
  20 CC=gcc
  21 CFLAGS+=-c -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer -fno-strict-aliasing -fno-common -pipe
  22 INCLUDE=-I$(KERNELSRC)/include
  23
  24 ifneq ($(KERNELMAJOR), 2.6)
  25 exit:
  26 endif
  27
  28 TARGET := acer_acpi.ko
  29 SOURCE := acer_acpi.c
  30
  31 all: $(TARGET)
  32
  33 exit:
  34         @echo "No support for 2.4 series kernels"
  35
  36 help:
  37         @echo Possible targets:
  38         @echo -e all\\t- default target, builds kernel module
  39         @echo -e install\\t- copies module binary to /lib/modules/$(KERNELVERSION)/extra/
  40         @echo -e clean\\t- removes all binaries and temporary files
  41
  42 acer_acpi.ko: $(SOURCE)
  43         $(MAKE) -C $(KERNELSRC) SUBDIRS=$(PWD) modules
  44
  45 acer_acpi.o: $(SOURCE)
  46         $(CC) $(INCLUDE) $(CFLAGS) -DMODVERSIONS -DMODULE -D__KERNEL__ -o $(TARGET) $(SOURCE)
  47
  48 clean:
  49         rm -f *~ *.o *.s *.ko *.mod.c .*.cmd Module.symvers
  50         rm -rf .tmp_versions
  51
  52 load:   $(TARGET)
  53         insmod $(TARGET)
  54
  55 unload:
  56         rmmod acer_acpi
  57
  58 install: $(TARGET)
  59         mkdir -p ${DESTDIR}/lib/modules/$(KERNELVERSION)/extra
  60         cp -v $(TARGET) ${DESTDIR}/lib/modules/$(KERNELVERSION)/extra/
  61         depmod -a