[PATCH] add comment in wait_for_sysfs to explain the structure better.

[thirdparty/systemd.git] / Makefile

# Makefile for udev
#
# Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#

# Set the following to control the use of syslog
# Set it to `false' to remove all logging
USE_LOG = true

# Set the following to `true' to log the debug
# and make a unstripped, unoptimized  binary.
# Leave this set to `false' for production use.
DEBUG = false

# Set this to compile with Security-Enhanced Linux support.
USE_SELINUX = false

ROOT =          udev
DAEMON =        udevd
SENDER =        udevsend
INFO =          udevinfo
TESTER =        udevtest
STARTER =       udevstart
RULER =         udevruler
WAIT =          wait_for_sysfs
VERSION =       033_bk
INSTALL_DIR =   /usr/local/bin
RELEASE_NAME =  $(ROOT)-$(VERSION)
LOCAL_CFG_DIR = etc/udev
HOTPLUG_EXEC =  $(ROOT)

DESTDIR =

KERNEL_DIR = /lib/modules/${shell uname -r}/build

# override this to make udev look in a different location for it's config files
prefix =
exec_prefix =   ${prefix}
etcdir =        ${prefix}/etc
sbindir =       ${exec_prefix}/sbin
usrbindir =     ${exec_prefix}/usr/bin
mandir =        ${prefix}/usr/share/man
hotplugdir =    ${etcdir}/hotplug.d/default
configdir =     ${etcdir}/udev
initdir =       ${etcdir}/init.d
dev_ddir =      ${etcdir}/dev.d
srcdir = .

INSTALL = /usr/bin/install -c
INSTALL_PROGRAM = ${INSTALL}
INSTALL_DATA  = ${INSTALL} -m 644
INSTALL_SCRIPT = ${INSTALL_PROGRAM}

# To build any of the extras programs, run with:
#       make EXTRAS="extras/a extras/b" 
EXTRAS=

# place to put our device nodes
udevdir = ${prefix}/udev

# Comment out this line to build with something other 
# than the local version of klibc
#USE_KLIBC = true

# set up PWD so that older versions of make will work with our build.
PWD = $(shell pwd)

# If you are running a cross compiler, you may want to set this
# to something more interesting, like "arm-linux-".  If you want
# to compile vs uClibc, that can be done here as well.
CROSS = #/usr/i386-linux-uclibc/usr/bin/i386-uclibc-
CC = $(CROSS)gcc
LD = $(CROSS)gcc
AR = $(CROSS)ar
STRIP = $(CROSS)strip
RANLIB = $(CROSS)ranlib

export CROSS CC AR STRIP RANLIB CFLAGS LDFLAGS LIB_OBJS ARCH_LIB_OBJS CRT0

# code taken from uClibc to determine the current arch
ARCH := ${shell $(CC) -dumpmachine | sed -e s'/-.*//' -e 's/i.86/i386/' -e 's/sparc.*/sparc/' \
        -e 's/arm.*/arm/g' -e 's/m68k.*/m68k/' -e 's/powerpc/ppc/g'}

# code taken from uClibc to determine the gcc include dir
GCCINCDIR := ${shell LC_ALL=C $(CC) -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp"}

# code taken from uClibc to determine the libgcc.a filename
GCC_LIB := $(shell $(CC) -print-libgcc-file-name )

# use '-Os' optimization if available, else use -O2
OPTIMIZATION := ${shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
                then echo "-Os"; else echo "-O2" ; fi}

# add -Wredundant-decls when libsysfs gets cleaned up
WARNINGS := -Wall 

CFLAGS := -pipe -Dasmlinkage=

# set up the proper tdb spinlock code if we can
ifeq ($(strip $(ARCH)),i386)
        CFLAGS += -DUSE_SPINLOCKS -DINTEL_SPINLOCKS
endif

ifeq ($(strip $(USE_LOG)),true)
        CFLAGS  += -DLOG
endif

# if DEBUG is enabled, then we do not strip or optimize
ifeq ($(strip $(DEBUG)),true)
        CFLAGS  += -O1 -g -DDEBUG -D_GNU_SOURCE
        LDFLAGS += -Wl,-warn-common
        STRIPCMD = /bin/true -Since_we_are_debugging
else
        CFLAGS  += $(OPTIMIZATION) -fomit-frame-pointer -D_GNU_SOURCE
        LDFLAGS += -s -Wl,-warn-common
        STRIPCMD = $(STRIP) -s --remove-section=.note --remove-section=.comment
endif

# If we are using our version of klibc, then we need to build, link it, and then
# link udev against it statically.
# Otherwise, use glibc and link dynamically.
ifeq ($(strip $(USE_KLIBC)),true)
        KLIBC_BASE      = $(PWD)/klibc
        KLIBC_DIR       = $(KLIBC_BASE)/klibc
        INCLUDE_DIR     := $(KLIBC_BASE)/include
        LINUX_INCLUDE_DIR       := $(KERNEL_DIR)/include
        include $(KLIBC_DIR)/arch/$(ARCH)/MCONFIG
        # arch specific objects
        ARCH_LIB_OBJS = \
                        $(KLIBC_DIR)/libc.a


        CRT0 = $(KLIBC_DIR)/crt0.o
        LIBC = $(ARCH_LIB_OBJS) $(LIB_OBJS) $(CRT0)
        CFLAGS += $(WARNINGS) -nostdinc                 \
                $(OPTFLAGS)                             \
                -D__KLIBC__ -fno-builtin-printf         \
                -I$(INCLUDE_DIR)                        \
                -I$(INCLUDE_DIR)/arch/$(ARCH)           \
                -I$(INCLUDE_DIR)/bits$(BITSIZE)         \
                -I$(GCCINCDIR)                          \
                -I$(LINUX_INCLUDE_DIR)
        LIB_OBJS =
        LDFLAGS = --static --nostdlib -nostartfiles -nodefaultlibs
else
        WARNINGS += -Wshadow -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations
        CRT0 =
        LIBC =
        CFLAGS += $(WARNINGS) -I$(GCCINCDIR)
        LIB_OBJS = -lc
        LDFLAGS =
endif

ifeq ($(strip $(USE_SELINUX)),true)
        CFLAGS += -DUSE_SELINUX
        LIB_OBJS += -lselinux
endif

CFLAGS += -I$(PWD)/libsysfs

# config files automatically generated
GEN_CONFIGS =   $(LOCAL_CFG_DIR)/udev.conf

all: $(ROOT) $(SENDER) $(DAEMON) $(INFO) $(TESTER) $(WAIT) $(GEN_CONFIGS)
        @extras="$(EXTRAS)" ; for target in $$extras ; do \
                echo $$target ; \
                $(MAKE) prefix=$(prefix) \
                        LD="$(LD)" \
                        SYSFS="$(SYSFS)" \
                        KERNEL_DIR="$(KERNEL_DIR)" \
                        -C $$target $@ ; \
        done ; \

$(ARCH_LIB_OBJS) : $(CRT0)

$(CRT0):
        @if [ ! -r klibc/linux ]; then \
                ln -f -s $(KERNEL_DIR) klibc/linux; \
        fi
        $(MAKE) -C klibc SUBDIRS=klibc

TDB =   tdb/tdb.o       \
        tdb/spinlock.o

SYSFS = $(PWD)/libsysfs/sysfs_bus.o     \
        $(PWD)/libsysfs/sysfs_class.o   \
        $(PWD)/libsysfs/sysfs_device.o  \
        $(PWD)/libsysfs/sysfs_dir.o     \
        $(PWD)/libsysfs/sysfs_driver.o  \
        $(PWD)/libsysfs/sysfs_utils.o   \
        $(PWD)/libsysfs/dlist.o

OBJS =  udev_lib.o      \
        udev_config.o   \
        udev-add.o      \
        udev-remove.o   \
        udevdb.o        \
        namedev.o       \
        namedev_parse.o \
        dev_d.o         \
        $(SYSFS)        \
        $(TDB)

HEADERS =       udev.h          \
                udev_lib.h      \
                namedev.h       \
                udev_version.h  \
                udevdb.h        \
                klibc_fixups.h  \
                logging.h       \
                selinux.h       \
                list.h

ifeq ($(strip $(USE_KLIBC)),true)
        OBJS += klibc_fixups.o
        KLIBC_FIXUP = klibc_fixups.o
endif

# header files automatically generated
GEN_HEADERS =   udev_version.h

# Rules on how to create the generated header files
udev_version.h:
        @echo \#define UDEV_VERSION             \"$(VERSION)\" > $@
        @echo \#define UDEV_ROOT                \"$(udevdir)/\" >> $@
        @echo \#define UDEV_DB                  \"$(udevdir)/.udev.tdb\" >> $@
        @echo \#define UDEV_CONFIG_DIR          \"$(configdir)\" >> $@
        @echo \#define UDEV_CONFIG_FILE         \"$(configdir)/udev.conf\" >> $@
        @echo \#define UDEV_RULES_FILE          \"$(configdir)/rules.d\" >> $@
        @echo \#define UDEV_PERMISSION_FILE     \"$(configdir)/permissions.d\" >> $@
        @echo \#define UDEV_LOG_DEFAULT         \"yes\" >> $@
        @echo \#define UDEV_BIN                 \"$(DESTDIR)$(sbindir)/udev\" >> $@
        @echo \#define UDEVD_BIN                \"$(DESTDIR)$(sbindir)/udevd\" >> $@

# Rules on how to create the generated config files
$(LOCAL_CFG_DIR)/udev.conf:
        sed -e "s:@udevdir@:$(udevdir):" -e "s:@configdir@:$(configdir):" < $(LOCAL_CFG_DIR)/udev.conf.in > $@

GEN_MANPAGES   = udev.8
GEN_MANPAGESIN = udev.8.in
# Rules on how to create the man pages
$(GEN_MANPAGES): $(GEN_MANPAGESIN)
        sed -e "s:@udevdir@:$(udevdir):" < $@.in > $@


$(OBJS): $(GEN_HEADERS)
$(ROOT).o: $(GEN_HEADERS)
$(TESTER).o: $(GEN_HEADERS)
$(INFO).o: $(GEN_HEADERS)
$(DAEMON).o: $(GEN_HEADERS)
$(SENDER).o: $(GEN_HEADERS)
$(STARTER).o: $(GEN_HEADERS)

$(ROOT): $(LIBC) $(ROOT).o $(STARTER).o $(OBJS) $(HEADERS) $(GEN_MANPAGES)
        $(LD) $(LDFLAGS) -o $@ $(CRT0) udev.o udevstart.o $(OBJS) $(LIB_OBJS) $(ARCH_LIB_OBJS)
        $(STRIPCMD) $@

$(TESTER): $(LIBC) $(TESTER).o $(OBJS) $(HEADERS)
        $(LD) $(LDFLAGS) -o $@ $(CRT0) udevtest.o $(OBJS) $(LIB_OBJS) $(ARCH_LIB_OBJS)
        $(STRIPCMD) $@

$(INFO): $(LIBC) $(INFO).o $(OBJS) $(HEADERS)
        $(LD) $(LDFLAGS) -o $@ $(CRT0) udevinfo.o udev_lib.o udev_config.o udevdb.o $(SYSFS) $(TDB) $(LIB_OBJS) $(ARCH_LIB_OBJS)
        $(STRIPCMD) $@

$(DAEMON): $(LIBC) $(DAEMON).o $(OBJS) udevd.h
        $(LD) $(LDFLAGS) -o $@ $(CRT0) udevd.o udev_lib.o $(KLIBC_FIXUP) $(LIB_OBJS) $(ARCH_LIB_OBJS)
        $(STRIPCMD) $@

$(SENDER): $(LIBC) $(SENDER).o $(OBJS) udevd.h
        $(LD) $(LDFLAGS) -o $@ $(CRT0) udevsend.o udev_lib.o $(LIB_OBJS) $(ARCH_LIB_OBJS)
        $(STRIPCMD) $@

$(RULER): $(LIBC) $(RULER).o $(OBJS) $(HEADERS)
        $(LD) $(LDFLAGS) -o $@ $(CRT0) udevruler.o udev_lib.o udev_config.o udevdb.o $(SYSFS) $(TDB) $(LIB_OBJS) $(ARCH_LIB_OBJS) -lnewt
        $(STRIPCMD) $@

$(WAIT): $(WAIT).o $(OBJS) $(HEADERS) $(LIBC)
        $(LD) $(LDFLAGS) -o $@ $(CRT0) $(WAIT).o $(SYSFS) $(LIB_OBJS) $(ARCH_LIB_OBJS)
        $(STRIPCMD) $@

clean:
        -find . \( -not -type d \) -and \( -name '*~' -o -name '*.[oas]' \) -type f -print \
         | xargs rm -f 
        -rm -f core $(ROOT) $(GEN_HEADERS) $(GEN_CONFIGS) $(GEN_MANPAGES) $(INFO) $(DAEMON) $(SENDER) $(TESTER) $(RULER) $(WAIT)
        $(MAKE) -C klibc clean
        @extras="$(EXTRAS)" ; for target in $$extras ; do \
                echo $$target ; \
                $(MAKE) prefix=$(prefix) LD="$(LD)" SYSFS="$(SYSFS)" \
                        -C $$target $@ ; \
        done ; \

spotless: clean
        $(MAKE) -C klibc spotless
        -rm -f klibc/linux

DISTFILES = $(shell find . \( -not -name '.' \) -print | grep -v -e CVS -e "\.tar\.gz$" -e "\/\." -e releases -e BitKeeper -e SCCS -e "\.tdb$" -e test/sys | sort )
DISTDIR := $(RELEASE_NAME)
srcdir = .
release: clean
        -rm -rf $(DISTDIR)
        mkdir $(DISTDIR)
        chmod 777 $(DISTDIR)
        bk export $(DISTDIR)
        tar -c $(DISTDIR) | gzip -9 > $(RELEASE_NAME).tar.gz
        rm -rf $(DISTDIR)
        @echo "$(RELEASE_NAME).tar.gz created"


small_release: $(DISTFILES) clean
#       @echo $(DISTFILES)
        @-rm -rf $(DISTDIR)
        @mkdir $(DISTDIR)
        @-chmod 777 $(DISTDIR)
        @for file in $(DISTFILES); do                   \
                if test -d $$file; then                 \
                        mkdir $(DISTDIR)/$$file;        \
                else                                    \
                        cp -p $$file $(DISTDIR)/$$file; \
                fi;                                     \
        done
        @tar -c $(DISTDIR) | gzip -9 > $(RELEASE_NAME).tar.gz
        @rm -rf $(DISTDIR)
        @echo "Built $(RELEASE_NAME).tar.gz"


install-initscript: etc/init.d/udev etc/init.d/udev.debian etc/init.d/udev.init.LSB
        @if [ -f /etc/redhat-release ]; then \
                $(INSTALL_DATA) -D etc/init.d/udev $(DESTDIR)$(initdir)/udev; \
        elif [ -f /etc/SuSE-release ]; then \
                $(INSTALL_DATA) -D etc/init.d/udev.init.LSB $(DESTDIR)$(initdir)/udev; \
        elif [ -f /etc/debian_version ]; then \
                $(INSTALL_DATA) -D etc/init.d/udev.debian $(DESTDIR)$(initdir)/udev; \
        fi

install-config:
        $(INSTALL) -d $(DESTDIR)$(configdir)/rules.d
        $(INSTALL) -d $(DESTDIR)$(configdir)/permissions.d
        @if [ ! -r $(DESTDIR)$(configdir)/udev.conf ]; then \
                echo $(INSTALL_DATA) $(LOCAL_CFG_DIR)/udev.conf $(DESTDIR)$(configdir); \
                $(INSTALL_DATA) $(LOCAL_CFG_DIR)/udev.conf $(DESTDIR)$(configdir); \
        fi
        @if [ ! -r $(DESTDIR)$(configdir)/rules.d/50-udev.rules ]; then \
                echo $(INSTALL_DATA) $(LOCAL_CFG_DIR)/udev.rules $(DESTDIR)$(configdir)/rules.d/50-udev.rules; \
                $(INSTALL_DATA) $(LOCAL_CFG_DIR)/udev.rules $(DESTDIR)$(configdir)/rules.d/50-udev.rules; \
        fi
        @if [ ! -r $(DESTDIR)$(configdir)/permissions.d/50-udev.permissions ]; then \
                echo $(INSTALL_DATA) $(LOCAL_CFG_DIR)/udev.permissions $(DESTDIR)$(configdir)/permissions.d/50-udev.permissions; \
                $(INSTALL_DATA) $(LOCAL_CFG_DIR)/udev.permissions $(DESTDIR)$(configdir)/permissions.d/50-udev.permissions; \
        fi

install-dev.d:
        $(INSTALL) -d $(DESTDIR)$(dev_ddir)/default
        $(INSTALL_PROGRAM) -D etc/dev.d/net/hotplug.dev $(DESTDIR)$(dev_ddir)/net/hotplug.dev

uninstall-dev.d:
        - rm $(dev_ddir)/net/hotplug.dev
        - rmdir $(dev_ddir)/net
        - rmdir $(dev_ddir)/default
        - rmdir $(dev_ddir)

install-man:
        $(INSTALL_DATA) -D udev.8 $(DESTDIR)$(mandir)/man8/udev.8
        $(INSTALL_DATA) -D udevinfo.8 $(DESTDIR)$(mandir)/man8/udevinfo.8
        $(INSTALL_DATA) -D udevtest.8 $(DESTDIR)$(mandir)/man8/udevtest.8
        $(INSTALL_DATA) -D udevstart.8 $(DESTDIR)$(mandir)/man8/udevstart.8
        $(INSTALL_DATA) -D udevd.8 $(DESTDIR)$(mandir)/man8/udevd.8
        - ln -f -s udevd.8 $(DESTDIR)$(mandir)/man8/udevsend.8

uninstall-man:
        - rm $(mandir)/man8/udev.8
        - rm $(mandir)/man8/udevinfo.8
        - rm $(mandir)/man8/udevtest.8
        - rm $(mandir)/man8/udevstart.8
        - rm $(mandir)/man8/udevd.8
        - rm $(mandir)/man8/udevsend.8

install: install-initscript install-config install-man install-dev.d all
        $(INSTALL) -d $(DESTDIR)$(udevdir)
        $(INSTALL) -d $(DESTDIR)$(hotplugdir)
        $(INSTALL_PROGRAM) -D $(ROOT) $(DESTDIR)$(sbindir)/$(ROOT)
        $(INSTALL_PROGRAM) -D $(DAEMON) $(DESTDIR)$(sbindir)/$(DAEMON)
        $(INSTALL_PROGRAM) -D $(SENDER) $(DESTDIR)$(sbindir)/$(SENDER)
        $(INSTALL_PROGRAM) -D $(INFO) $(DESTDIR)$(usrbindir)/$(INFO)
        $(INSTALL_PROGRAM) -D $(TESTER) $(DESTDIR)$(usrbindir)/$(TESTER)
        $(INSTALL_PROGRAM) -D $(WAIT) $(DESTDIR)$(sbindir)/$(WAIT)
        - ln -f -s $(sbindir)/udev $(DESTDIR)$(sbindir)/$(STARTER)
        - ln -f -s $(sbindir)/$(SENDER) $(DESTDIR)$(hotplugdir)/10-udev.hotplug
        - ln -f -s $(sbindir)/$(WAIT) $(DESTDIR)$(hotplugdir)/05-wait_for_sysfs.hotplug
ifndef DESTDIR
        - killall udevd
        - rm -f $(udevdir)/.udev.tdb
endif
        @extras="$(EXTRAS)" ; for target in $$extras ; do \
                echo $$target ; \
                $(MAKE) prefix=$(prefix) LD="$(LD)" SYSFS="$(SYSFS)" \
                        -C $$target $@ ; \
        done ; \

uninstall: uninstall-man uninstall-dev.d
        - rm $(hotplugdir)/10-udev.hotplug
        - rm $(hotplugdir)/05-wait_for_sysfs.hotplug
        - rm $(configdir)/rules.d/50-udev.rules
        - rm $(configdir)/permissions.d/50-udev.permissions
        - rm $(configdir)/udev.conf
        - rmdir $(configdir)/rules.d
        - rmdir $(configdir)/permissions.d
        - rmdir $(configdir)
        - rm $(initdir)/udev
        - rm $(sbindir)/$(ROOT)
        - rm $(sbindir)/$(DAEMON)
        - rm $(sbindir)/$(SENDER)
        - rm $(sbindir)/$(STARTER)
        - rm $(usrbindir)/$(INFO)
        - rm $(usrbindir)/$(TESTER)
        - rm $(usrbindir)/$(WAIT)
        - rmdir $(hotplugdir)
        - rm $(udevdir)/.udev.tdb
        - rmdir $(udevdir)
        @extras="$(EXTRAS)" ; for target in $$extras ; do \
                echo $$target ; \
                $(MAKE) prefix=$(prefix) LD="$(LD)" SYSFS="$(SYSFS)" \
                        -C $$target $@ ; \
        done ; \