makefile

联想网卡驱动 linux环境下编写 初写驱动的同志参考以下

VMNS	=	1

OBJS	:= 	rhine_main.o rhine_proc.o
SRC		=	rhine_main.c rhine_proc.c
TARGET	=	rhinefet.o

KSP :=  /lib/modules/$(shell uname -r)/build \
        /usr/src/linux-$(shell uname -r) \
        /usr/src/linux-$(shell uname -r | sed 's/-.*//') \
        /usr/src/kernel-headers-$(shell uname -r) \
        /usr/src/kernel-source-$(shell uname -r) \
        /usr/src/linux-$(shell uname -r | sed 's/\([0-9]*\.[0-9]*\)\..*/\1/') \
        /usr/src/linux

ifeq ($(VMNS),1)
OBJS+=rhine_vmns.o
SRC+=rhine_vmns.c
endif

test_dir = $(shell [ -e $(dir)/include/linux ] && echo $(dir))
KSP := $(foreach dir, $(KSP), $(test_dir))

KSRC := $(firstword $(KSP))
#KSRC :=/usr/src/ksrc/RedHat/7.2/linux-2.4.7-10alt-ent
ifeq (,$(KSRC))
  $(error Linux kernel source not found)
endif

VERSION_FILE := $(KSRC)/include/linux/version.h
CONFIG_FILE  := $(KSRC)/include/linux/config.h

ifeq (,$(wildcard $(VERSION_FILE)))
  $(error Linux kernel source not configured - missing version.h)
endif

ifeq (,$(wildcard $(CONFIG_FILE)))
  $(error Linux kernel source not configured - missing config.h)
endif

ifneq (,$(findstring egcs-2.91.66, $(shell cat /proc/version)))
  CC := kgcc gcc cc
else
  CC := gcc cc
endif

test_cc = $(shell which $(cc) > /dev/null 2>&1 && echo $(cc))
CC := $(foreach cc, $(CC), $(test_cc))
CC := $(firstword $(CC))

CFLAGS += -Wall -DLINUX -D__KERNEL__ -DMODULE -DEXPORT_SYMTAB -D__NO_VERSION__ -O2 -pipe
CFLAGS += -I$(KSRC)/include -I. -Wstrict-prototypes -fomit-frame-pointer
CFLAGS += $(shell [ -f $(KSRC)/include/linux/modversions.h ] && \
            echo "-DMODVERSIONS -include $(KSRC)/include/linux/modversions.h")

KVER := $(shell $(CC) $(CFLAGS) -E -dM $(VERSION_FILE) | grep UTS_RELEASE | \
          awk '{ print $$3 }' | sed 's/\"//g')

KERVER2=$(shell uname -r | cut -d. -f2)

.SILENT: $(TARGET) clean

ifeq ($(TARGET), rhinefet.o)
	ifneq ($(KVER),$(shell uname -r))
		$(warning ***)
		$(warning *** Warning: kernel source version ($(KVER)))
		$(warning *** does not match running kernel  ($(shell uname -r)))
		$(warning *** Continuing with build,)
		$(warning *** resulting driver may not be what you want)
		$(warning ***)
	endif
endif

INSTDIR := $(shell find /lib/modules/$(KVER) -name $(TARGET) -printf "%h\n" | sort | head -1)

ifeq (,$(INSTDIR))
	ifeq (,$(KERVER2))
		ifneq (,$(wildcard /lib/modules/$(KVER)/kernel))
    		INSTDIR := /lib/modules/$(KVER)/kernel/drivers/net
		else
    		INSTDIR := /lib/modules/$(KVER)/net
  		endif
	else
		ifneq ($(KERVER2),2)
    		INSTDIR := /lib/modules/$(KVER)/kernel/drivers/net
		else
    		INSTDIR := /lib/modules/$(KVER)/net
  		endif
	endif
endif

# look for SMP in config.h
SMP := $(shell $(CC) $(CFLAGS) -E -dM $(CONFIG_FILE) | \
         grep CONFIG_SMP | awk '{ print $$3 }')
ifneq ($(SMP),1)
  SMP := 0
endif

ifeq ($(VMNS), 1)
	CFLAGS +=	-DVMNS
endif

ifeq ($(TARGET), rhinefet.o)
ifneq ($(SMP),$(shell uname -a | grep SMP > /dev/null 2>&1 && echo 1 || echo 0))
  $(warning ***)
ifeq ($(SMP),1)
  $(warning *** Warning: kernel source configuration (SMP))
  $(warning *** does not match running kernel (UP))
else
  $(warning *** Warning: kernel source configuration (UP))
  $(warning *** does not match running kernel (SMP))
endif
  $(warning *** Continuing with build,)
  $(warning *** resulting driver may not be what you want)
  $(warning ***)
endif
endif

ifeq ($(SMP), 1)
  CFLAGS += -D__SMP__
endif

$(TARGET): $(filter-out $(TARGET), $(SRC:.c=.o))
	$(LD) -r $^ -o $@
	echo; echo
	echo "**************************************************"
	echo "Build options:"
	echo "   VERSION    $(KVER)"
	echo -n "   SMP             "
	if [ "$(SMP)" = "1" ]; \
		then echo "Enabled"; else echo "Disabled"; fi
	echo -n "   VMNS            "
	if [ "$(VMNS)" = "1" ]; \
		then echo "Enabled"; else echo "Disabled"; fi
	echo "***************************************************"

install: clean $(TARGET)
	mkdir -p $(MOD_ROOT)$(INSTDIR)
	install -m 644 -o root $(TARGET) $(MOD_ROOT)$(INSTDIR)
	@if [ -f $(MOD_ROOT)$(INSTDIR)/via-rhine.o ] ; then \
		echo "*****  Move official driver via-rhine.o to via-rhine.o.backup" ; \
		echo "mv $(MOD_ROOT)$(INSTDIR)/via-rhine.o $(MOD_ROOT)$(INSTDIR)/via-rhine.o.backup";\
		mv $(MOD_ROOT)$(INSTDIR)/via-rhine.o $(MOD_ROOT)$(INSTDIR)/via-rhine.o.backup ; \
		echo ;\
	fi ;
	@if [ -f $(MOD_ROOT)$(INSTDIR)/linuxfet.o ] ; then \
		echo "*****  Move previous driver linuxfet.o to linuxfet.o.backup" ; \
		echo "mv $(MOD_ROOT)$(INSTDIR)/linuxfet.o $(MOD_ROOT)$(INSTDIR)/linuxfet.o.backup";\
		mv $(MOD_ROOT)$(INSTDIR)/linuxfet.o $(MOD_ROOT)$(INSTDIR)/linuxfet.o.backup ; \
		echo ;\
	fi ;

ifeq (,$(MOD_ROOT))
	/sbin/depmod -a || true
else
	/sbin/depmod -b $(MOD_ROOT) -a || true
endif

uninstall:
	rm -f $(INSTDIR)/$(TARGET)
	@if [ -f $(MOD_ROOT)$(INSTDIR)/via-rhine.o.backup ] ; then \
	    echo "*****  Restore official driver vai-rhine.o from $(MOD_ROOT)$(INSTDIR)".; \
		echo "mv $(MOD_ROOT)$(INSTDIR)/via-rhine.o.backup $(MOD_ROOT)$(INSTDIR)/via-rhine.o";\
	    mv $(MOD_ROOT)$(INSTDIR)/via-rhine.o.backup $(MOD_ROOT)$(INSTDIR)/via-rhine.o ;\
	fi
	/sbin/depmod -a


clean:
	rm -f $(TARGET) $(SRC:.c=.o) *~

-include .depend.mak