Intel e1000e网卡Makefile实例

################################################################################
#
# Intel PRO/1000 Linux driver
# Copyright(c) 1999 - 2017 Intel Corporation.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms and conditions of the GNU General Public License,
# version 2, as published by the Free Software Foundation.
#
# This program is distributed in the hope it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
# more details.
#
# The full GNU General Public License is included in this distribution in
# the file called "COPYING".
#
# Contact Information:
# Linux NICS
# e1000-devel Mailing List
# Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
#
################################################################################


###########################################################################
# Driver files
FAMILYC = 82571.c ich8lan.c 80003es2lan.c
FAMILYH = 82571.h ich8lan.h 80003es2lan.h


# core driver files
CFILES = netdev.c ethtool.c param.c $(FAMILYC) \
         mac.c nvm.c phy.c manage.c kcompat.c
HFILES = e1000.h hw.h regs.h defines.h \
         mac.h nvm.h phy.h manage.h $(FAMILYH) kcompat.h
ifeq (,$(BUILD_KERNEL))
BUILD_KERNEL=$(shell uname -r)
endif


DRIVER_NAME = e1000e


###########################################################################
# Environment tests


# Kernel Search Path
# All the places we look for kernel source
KSP :=  /lib/modules/$(BUILD_KERNEL)/build \
        /lib/modules/$(BUILD_KERNEL)/source \
        /lib/modules/$(BUILD_KERNEL)-default/build \
        /usr/src/linux-$(BUILD_KERNEL) \
        /usr/src/linux-$($(BUILD_KERNEL) | sed 's/-.*//') \
        /usr/src/kernel-headers-$(BUILD_KERNEL) \
        /usr/src/kernel-source-$(BUILD_KERNEL) \
        /usr/src/linux-$($(BUILD_KERNEL) | sed 's/\([0-9]*\.[0-9]*\)\..*/\1/') \
        /usr/src/linux


# prune the list down to only values that exist
# and have an include/linux sub-directory
test_dir = $(shell [ -e $(dir)/include/linux ] && echo $(dir))
KSP := $(foreach dir, $(KSP), $(test_dir))


# we will use this first valid entry in the search path
ifeq (,$(KSRC))
  KSRC := $(firstword $(KSP))
endif


ifeq (,$(KSRC))
  $(warning *** Kernel header files not in any of the expected locations.)
  $(warning *** Install the appropriate kernel development package, e.g.)
  $(error kernel-devel, for building kernel modules and try again)
else
ifeq (/lib/modules/$(BUILD_KERNEL)/source, $(KSRC))
  KOBJ :=  /lib/modules/$(BUILD_KERNEL)/build
else
  KOBJ :=  $(KSRC)
endif
endif


# Version file Search Path
VSP :=  $(KOBJ)/include/generated/utsrelease.h \
        $(KOBJ)/include/linux/utsrelease.h \
        $(KOBJ)/include/linux/version.h \
        $(KOBJ)/include/generated/uapi/linux/version.h \
        /boot/vmlinuz.version.h


# Config file Search Path
CSP :=  $(KOBJ)/include/generated/autoconf.h \
        $(KOBJ)/include/linux/autoconf.h \
        /boot/vmlinuz.autoconf.h


# prune the lists down to only files that exist
test_file = $(shell [ -f $(file) ] && echo $(file))
VSP := $(foreach file, $(VSP), $(test_file))
CSP := $(foreach file, $(CSP), $(test_file))


# and use the first valid entry in the Search Paths
ifeq (,$(VERSION_FILE))
  VERSION_FILE := $(firstword $(VSP))
endif
ifeq (,$(CONFIG_FILE))
  CONFIG_FILE := $(firstword $(CSP))
endif


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


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


# pick a compiler
ifneq (,$(findstring egcs-2.91.66, $(shell cat /proc/version)))
  CC := kgcc gcc cc
else
  CC := gcc cc
endif
test_cc = $(shell $(cc) --version > /dev/null 2>&1 && echo $(cc))
CC := $(foreach cc, $(CC), $(test_cc))
CC := $(firstword $(CC))
ifeq (,$(CC))
  $(error Compiler not found)
endif


# we need to know what platform the driver is being built on
# some additional features are only built on Intel platforms
ARCH := $(shell uname -m | sed 's/i.86/i386/')
ifeq ($(ARCH),alpha)
  EXTRA_CFLAGS += -ffixed-8 -mno-fp-regs
endif
ifeq ($(ARCH),x86_64)
  EXTRA_CFLAGS += -mcmodel=kernel -mno-red-zone
endif
ifeq ($(ARCH),ppc)
  EXTRA_CFLAGS += -msoft-float
endif
ifeq ($(ARCH),ppc64)
  EXTRA_CFLAGS += -m64 -msoft-float
  LDFLAGS += -melf64ppc
endif


# extra flags for module builds
EXTRA_CFLAGS += -DDRIVER_$(shell echo $(DRIVER_NAME) | tr '[a-z]' '[A-Z]')
EXTRA_CFLAGS += -DDRIVER_NAME=$(DRIVER_NAME)
EXTRA_CFLAGS += -DDRIVER_NAME_CAPS=$(shell echo $(DRIVER_NAME) | tr '[a-z]' '[A-Z]')
# standard flags for module builds
EXTRA_CFLAGS += -DLINUX -D__KERNEL__ -DMODULE -O2 -pipe -Wall
EXTRA_CFLAGS += -I$(KSRC)/include -I.
EXTRA_CFLAGS += $(shell [ -f $(KSRC)/include/linux/modversions.h ] && \
            echo "-DMODVERSIONS -DEXPORT_SYMTAB \
                  -include $(KSRC)/include/linux/modversions.h")


EXTRA_CFLAGS += $(CFLAGS_EXTRA)


RHC := $(KSRC)/include/linux/rhconfig.h
ifneq (,$(wildcard $(RHC)))
  # 7.3 typo in rhconfig.h
  ifneq (,$(shell $(CC) $(EXTRA_CFLAGS) -E -dM $(RHC) | grep __module__bigmem))
EXTRA_CFLAGS += -D__module_bigmem
  endif
endif


# get the kernel version - we use this to find the correct install path
KVER := $(shell $(CC) $(EXTRA_CFLAGS) -E -dM $(VERSION_FILE) | grep UTS_RELEASE | \
        awk '{ print $$3 }' | sed 's/\"//g')


# assume source symlink is the same as build, otherwise adjust KOBJ
ifneq (,$(wildcard /lib/modules/$(KVER)/build))
ifneq ($(KSRC),$(shell cd /lib/modules/$(KVER)/build ; pwd -P))
  KOBJ=/lib/modules/$(KVER)/build
endif
endif


KVER_CODE := $(shell $(CC) $(EXTRA_CFLAGS) -E -dM $(VSP) 2>/dev/null |\
grep -m 1 LINUX_VERSION_CODE | awk '{ print $$3 }' | sed 's/\"//g')


RHEL_CODE := $(shell $(CC) $(EXTRA_CFLAGS) -E -dM $(VSP) 2>/dev/null |\
grep -m 1 RHEL_RELEASE_CODE | awk '{ print $$3 }')


# Determine SLE_LOCALVERSION_CODE for SuSE SLE (needed by kcompat)
# This assumes SuSE will continue setting CONFIG_LOCALVERSION to the string
# appended to the stable kernel version on which their kernel is based with
# additional versioning information (up to 3 numbers) and a kernel type,
# e.g. CONFIG_LOCALVERSION=-1.2.3-default
ifeq (1,$(shell ${CC} -E -dM ${CONFIG_FILE} 2> /dev/null |\
          grep -m 1 CONFIG_SUSE_KERNEL | awk '{ print $$3 }'))
  LOCALVERSION := $(shell ${CC} -E -dM ${CONFIG_FILE} 2> /dev/null |\
                    grep -m 1 CONFIG_LOCALVERSION | awk '{ print $$3 }' |\
                    cut -d'-' -f2)
  LOCALVER_A := $(shell echo ${LOCALVERSION} | cut -d'.' -f1)
  LOCALVER_B := $(shell echo ${LOCALVERSION} | cut -d'.' -f2)
  LOCALVER_C := $(shell echo ${LOCALVERSION} | cut -d'.' -f3)
  SLE_LOCALVERSION_CODE := $(shell expr ${LOCALVER_A} \* 65536 + \
                                        0${LOCALVER_B} \* 256 + 0${LOCALVER_C})
  EXTRA_CFLAGS += -DSLE_LOCALVERSION_CODE=${SLE_LOCALVERSION_CODE}
endif


# abort the build on kernels older than 2.4.0
ifneq (1,$(shell [ $(KVER_CODE) -ge 132096 ] && echo 1 || echo 0))
  $(error *** Aborting the build. \
          *** This driver is not supported on kernel versions older than 2.4.0)
endif


# Use NO_PTP_SUPPORT compile flag to disable IEEE-1588 PTP(documented in README)
ifneq ($(filter %NO_PTP_SUPPORT,$(CFLAGS_EXTRA)),-DNO_PTP_SUPPORT)
# Do not attempt to enable PTP on kernels that do not support it
ifeq (1,$(shell ([ $(KVER_CODE) -ge 196608 ] || [ $(RHEL_CODE) -ge 1540 ]) && echo 1 || echo 0))
include $(KOBJ)/include/config/auto.conf
ifdef CONFIG_PTP_1588_CLOCK
CFILES += ptp.c
endif # CONFIG_PTP_1588_CLOCK
endif # kernel version >= 3.0
endif # NO_PTP_SUPPORT


# set the install path
ifeq (1,$(shell [ $(KVER_CODE) -lt 197120 ] && echo 1 || echo 0))
INSTDIR := /lib/modules/$(KVER)/updates/drivers/net/$(DRIVER_NAME)
else
INSTDIR := /lib/modules/$(KVER)/updates/drivers/net/ethernet/intel/$(DRIVER_NAME)
endif


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


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


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


# Don't set gcc-i-sys.sh until after our $(shell) invocations of ${CC}
ifneq ($(wildcard ./gcc-i-sys.sh),)
GCC_I_SYS := $(shell readlink -f ./gcc-i-sys.sh)
$(shell chmod +x ${GCC_I_SYS})
export REAL_CC := ${CC}
export CC := ${GCC_I_SYS}
endif


###########################################################################
# Kernel Version Specific rules


ifeq (1,$(shell [ $(KVER_CODE) -ge 132352 ] && echo 1 || echo 0))


# Makefile for 2.5.x and newer kernel
TARGET = $(DRIVER_NAME).ko


# man page
MANSECTION = 7
MANFILE = $(TARGET:.ko=.$(MANSECTION))


ifneq ($(PATCHLEVEL),)
EXTRA_CFLAGS += $(CFLAGS_EXTRA)
obj-m += $(DRIVER_NAME).o
$(DRIVER_NAME)-objs := $(CFILES:.c=.o)
else
default:
ifeq ($(KOBJ),$(KSRC))
$(MAKE) -C $(KSRC) CC=${CC} SUBDIRS=$(shell pwd) modules
else
$(MAKE) -C $(KSRC) CC=${CC} O=$(KOBJ) SUBDIRS=$(shell pwd) modules
endif
endif


else # ifeq (1,$(shell [ $(KVER_CODE) -ge 132352 ] && echo 1 || echo 0))


# Makefile for 2.4.x kernel
TARGET = $(DRIVER_NAME).o


# man page
MANSECTION = 7
MANFILE = $(TARGET:.o=.$(MANSECTION))


# Get rid of compile warnings in kernel header files from SuSE
ifneq (,$(wildcard /etc/SuSE-release))
  EXTRA_CFLAGS += -Wno-sign-compare -fno-strict-aliasing
endif


# Get rid of compile warnings in kernel header files from fedora
ifneq (,$(wildcard /etc/fedora-release))
  EXTRA_CFLAGS += -fno-strict-aliasing
endif
CFLAGS += $(EXTRA_CFLAGS)


.SILENT: $(TARGET)
$(TARGET): $(filter-out $(TARGET), $(CFILES:.c=.o))
$(LD) $(LDFLAGS) -r $^ -o $@
echo; echo
echo "**************************************************"
echo "** $(TARGET) built for $(KVER)"
echo -n "** SMP               "
if [ "$(SMP)" = "1" ]; \
then echo "Enabled"; else echo "Disabled"; fi
echo "**************************************************"
echo


$(CFILES:.c=.o): $(HFILES) Makefile
default:
$(MAKE) CC=${CC}


endif # ifeq (1,$(shell [ $(KVER_CODE) -ge 132352 ] && echo 1 || echo 0))


ifeq (,$(MANDIR))
  # find the best place to install the man page
  MANPATH := $(shell (manpath 2>/dev/null || echo $MANPATH) | sed 's/:/ /g')
  ifneq (,$(MANPATH))
    # test based on inclusion in MANPATH
    test_dir = $(findstring $(dir), $(MANPATH))
  else
    # no MANPATH, test based on directory existence
    test_dir = $(shell [ -e $(dir) ] && echo $(dir))
  endif
  # our preferred install path
  # should /usr/local/man be in here ?
  MANDIR := /usr/share/man /usr/man
  MANDIR := $(foreach dir, $(MANDIR), $(test_dir))
  MANDIR := $(firstword $(MANDIR))
endif
ifeq (,$(MANDIR))
  # fallback to /usr/man
  MANDIR := /usr/man
endif


# depmod version for rpm builds
DEPVER := $(shell /sbin/depmod -V 2>/dev/null | \
          awk 'BEGIN {FS="."} NR==1 {print $$2}')


###########################################################################
# Build rules


$(MANFILE).gz: ../$(MANFILE)
gzip -c $< > $@


install: default $(MANFILE).gz
# remove all old versions of the driver
find $(INSTALL_MOD_PATH)/lib/modules/$(KVER) -name $(TARGET) -exec rm -f {} \; || true
find $(INSTALL_MOD_PATH)/lib/modules/$(KVER) -name $(TARGET).gz -exec rm -f {} \; || true
install -D -m 644 $(TARGET) $(INSTALL_MOD_PATH)$(INSTDIR)/$(TARGET)
ifeq (,$(INSTALL_MOD_PATH))
/sbin/depmod -a $(KVER) || true
else
  ifeq ($(DEPVER),1 )
/sbin/depmod -r $(INSTALL_MOD_PATH) -a $(KVER) || true
  else
/sbin/depmod -b $(INSTALL_MOD_PATH) -a -n $(KVER) > /dev/null || true
  endif
endif
install -D -m 644 $(MANFILE).gz $(INSTALL_MOD_PATH)$(MANDIR)/man$(MANSECTION)/$(MANFILE).gz
man -c -P'cat > /dev/null' $(MANFILE:.$(MANSECTION)=) || true


uninstall:
if [ -e $(INSTDIR)/$(TARGET) ] ; then \
   rm -f $(INSTDIR)/$(TARGET) ; \
fi
/sbin/depmod -a
if [ -e $(MANDIR)/man$(MANSECTION)/$(MANFILE).gz ] ; then \
rm -f $(MANDIR)/man$(MANSECTION)/$(MANFILE).gz ; \
fi


.PHONY: clean install


ksrc:
@echo $(KSRC)


clean:
ifeq ($(KOBJ),$(KSRC))
$(MAKE) -C $(KSRC) SUBDIRS=$(shell pwd) clean
else
$(MAKE) -C $(KSRC) O=$(KOBJ) SUBDIRS=$(shell pwd) clean
endif
rm -rf $(TARGET) $(TARGET:.ko=.o) $(TARGET:.ko=.mod.c) $(TARGET:.ko=.mod.o) $(CFILES:.c=.o) $(MANFILE).gz .*cmd .tmp_versions Module.markers Module.symvers modules.order


.NOTPARALLEL: