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