freebsd-dev/sys/conf/kmod.mk

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# From: @(#)bsd.prog.mk 5.26 (Berkeley) 6/25/91
1999-08-28 00:22:10 +00:00
# $FreeBSD$
#
# The include file <bsd.kmod.mk> handles installing Kernel Loadable Device
# drivers (KLD's).
#
#
# +++ variables +++
#
# CLEANFILES Additional files to remove for the clean and cleandir targets.
#
# KMOD The name of the kernel module to build.
#
# KMODDIR Base path for kernel modules (see kld(4)). [/boot/kernel]
#
# KMODOWN KLD owner. [${BINOWN}]
#
# KMODGRP KLD group. [${BINGRP}]
#
# KMODMODE KLD mode. [${BINMODE}]
#
# LINKS The list of KLD links; should be full pathnames, the
# linked-to file coming first, followed by the linked
# file. The files are hard-linked. For example, to link
# /modules/master and /modules/meister, use:
#
# LINKS= /modules/master /modules/meister
#
# KMODLOAD Command to load a kernel module [/sbin/kldload]
#
# KMODUNLOAD Command to unload a kernel module [/sbin/kldunload]
#
# PROG The name of the kernel module to build.
# If not supplied, ${KMOD}.o is used.
#
# SRCS List of source files
#
# SUBDIR A list of subdirectories that should be built as well.
# Each of the targets will execute the same target in the
# subdirectories.
#
# SYMLINKS Same as LINKS, except it creates symlinks and the
# linked-to pathname may be relative.
#
# DESTDIR, DISTDIR are set by other Makefiles (e.g. bsd.own.mk)
#
# MFILES Optionally a list of interfaces used by the module.
# This file contains a default list of interfaces.
#
# EXPORT_SYMS A list of symbols that should be exported from the module,
# or the name of a file containing a list of symbols, or YES
# to export all symbols. If not defined, no symbols are
# exported.
#
# +++ targets +++
#
# distribute:
# This is a variant of install, which will
# put the stuff into the right "distribution".
#
# install:
# install the kernel module; if the Makefile
# does not itself define the target install, the targets
# beforeinstall and afterinstall may also be used to cause
# actions immediately before and after the install target
# is executed.
#
# load:
# Load KLD.
#
# unload:
# Unload KLD.
#
# bsd.obj.mk: clean, cleandir and obj
# bsd.dep.mk: cleandepend, depend and tags
#
AWK?= awk
KMODLOAD?= /sbin/kldload
KMODUNLOAD?= /sbin/kldunload
OBJCOPY?= objcopy
.if defined(KMODDEPS)
.error "Do not use KMODDEPS on 5.0+, use MODULE_VERSION/MODULE_DEPEND"
.endif
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.include <bsd.init.mk>
.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
CFLAGS+= ${COPTS} -D_KERNEL ${CWARNFLAGS}
CFLAGS+= -DKLD_MODULE
# Don't use any standard or source-relative include directories.
# Since -nostdinc will annull any previous -I paths, we repeat all
# such paths after -nostdinc. It doesn't seem to be possible to
# add to the front of `make' variable.
_ICFLAGS:= ${CFLAGS:M-I*}
CFLAGS+= -nostdinc -I- ${INCLMAGIC} ${_ICFLAGS}
# Add -I paths for system headers. Individual KLD makefiles don't
# need any -I paths for this. Similar defaults for .PATH can't be
# set because there are no standard paths for non-headers.
CFLAGS+= -I. -I@ -I@/dev
# Add a -I path to standard headers like <stddef.h>. Use a relative
# path to src/include if possible. If the @ symlink hasn't been built
# yet, then we can't tell if the relative path exists. Add both the
# potential relative path and an absolute path in that case.
.if exists(@)
.if exists(@/../include)
CFLAGS+= -I@/../include
.else
CFLAGS+= -I${DESTDIR}/usr/include
.endif
.else # !@
CFLAGS+= -I@/../include -I${DESTDIR}/usr/include
.endif # @
# Disallow common variables, and if we end up with commons from
# somewhere unexpected, allocate storage for them in the module itself.
CFLAGS+= -fno-common
LDFLAGS+= -d -warn-common
CFLAGS+= ${DEBUG_FLAGS}
.if ${OBJFORMAT} == elf
CLEANFILES+= setdef0.c setdef1.c setdefs.h
CLEANFILES+= setdef0.o setdef1.o
.endif
OBJS+= ${SRCS:N*.h:R:S/$/.o/g}
.if !defined(PROG)
PROG= ${KMOD}.ko
.endif
.if !defined(DEBUG)
FULLPROG= ${PROG}
.else
FULLPROG= ${PROG}.debug
${PROG}: ${FULLPROG}
${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
.endif
${FULLPROG}: ${KMOD}.kld
${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
EXPORT_SYMS?= NO
.if ${EXPORT_SYMS} != YES
CLEANFILES+= ${.OBJDIR}/export_syms
.endif
${KMOD}.kld: ${OBJS}
${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
.if defined(EXPORT_SYMS)
.if ${EXPORT_SYMS} != YES
.if ${EXPORT_SYMS} == NO
touch ${.OBJDIR}/export_syms
.elif !exists(${.CURDIR}/${EXPORT_SYMS})
echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
.else
grep -v '^#' < ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
.endif
awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
${.OBJDIR}/export_syms | \
xargs -J% ${OBJCOPY} % ${.TARGET}
.endif
.endif
_ILINKS=@ machine
all: objwarn ${PROG}
beforedepend: ${_ILINKS}
@rm -f .depend
# Ensure that the links exist without depending on it when it exists which
# causes all the modules to be rebuilt when the directory pointed to changes.
.for _link in ${_ILINKS}
.if !exists(${.OBJDIR}/${_link})
${OBJS}: ${_link}
.endif
.endfor
# Search for kernel source tree in standard places.
.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
.if !defined(SYSDIR) && exists(${_dir}/kern/)
SYSDIR= ${_dir}
.endif
.endfor
.if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
.error "can't find kernel source tree"
.endif
${_ILINKS}:
@case ${.TARGET} in \
machine) \
path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
@) \
path=${SYSDIR} ;; \
esac ; \
path=`(cd $$path && /bin/pwd)` ; \
${ECHO} ${.TARGET} "->" $$path ; \
ln -s $$path ${.TARGET}
CLEANFILES+= ${PROG} ${FULLPROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
.if !target(install)
.if !target(beforeinstall)
beforeinstall:
.endif
.if !target(afterinstall)
afterinstall:
.endif
_INSTALLFLAGS:= ${INSTALLFLAGS}
.for ie in ${INSTALLFLAGS_EDIT}
_INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
.endfor
.if defined(DEBUG)
install.debug:
cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
.endif
realinstall:
.if defined(DEBUG) && defined(INSTALL_DEBUG)
${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}/
.else
${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}/
.if defined(LINKS) && !empty(LINKS)
@set ${LINKS}; \
while test $$# -ge 2; do \
l=${DESTDIR}$$1; \
shift; \
t=${DESTDIR}$$1; \
shift; \
${ECHO} $$t -\> $$l; \
ln -f $$l $$t; \
done; true
.endif
.if defined(SYMLINKS) && !empty(SYMLINKS)
@set ${SYMLINKS}; \
while test $$# -ge 2; do \
l=$$1; \
shift; \
t=${DESTDIR}$$1; \
shift; \
${ECHO} $$t -\> $$l; \
ln -fs $$l $$t; \
done; true
.endif
.if !defined(NO_XREF)
@if type kldxref >/dev/null 2>&1; then \
${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
kldxref ${DESTDIR}${KMODDIR}; \
fi
.endif
.endif
install: afterinstall
afterinstall: realinstall
realinstall: beforeinstall
.endif
.if !target(load)
load: ${PROG}
${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
.endif
.if !target(unload)
unload:
${KMODUNLOAD} -v ${KMOD}
.endif
.for _src in ${SRCS:Mopt_*.h}
CLEANFILES+= ${_src}
.if !target(${_src})
${_src}:
touch ${.TARGET}
.endif
.endfor
MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
dev/iicbus/iicbus_if.m isa/isa_if.m \
libkern/iconv_converter_if.m \
dev/mii/miibus_if.m \
dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m
.for _srcsrc in ${MFILES}
.for _ext in c h
.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
CLEANFILES+= ${_src}
.if !target(${_src})
.if !exists(@)
${_src}: @
.endif
.if exists(@)
${_src}: @/tools/makeobjops.awk @/${_srcsrc}
.endif
${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
.endif
.endfor # _src
.endfor # _ext
.endfor # _srcsrc
.for _ext in c h
.if ${SRCS:Mvnode_if.${_ext}} != ""
CLEANFILES+= vnode_if.${_ext}
.if !exists(@)
vnode_if.${_ext}: @
.endif
.if exists(@)
vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
.endif
${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
.endif
.endfor
regress:
lint: ${SRCS}
${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
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.include <bsd.dep.mk>
.if !exists(${DEPENDFILE})
${OBJS}: ${SRCS:M*.h}
.endif
.include <bsd.obj.mk>
.include <bsd.kern.mk>