1# From: @(#)bsd.prog.mk 5.26 (Berkeley) 6/25/91 2# $FreeBSD$ 3# 4# The include file <bsd.kmod.mk> handles building and installing loadable 5# kernel modules. 6# 7# 8# +++ variables +++ 9# 10# CLEANFILES Additional files to remove for the clean and cleandir targets. 11# 12# EXPORT_SYMS A list of symbols that should be exported from the module, 13# or the name of a file containing a list of symbols, or YES 14# to export all symbols. If not defined, no symbols are 15# exported. 16# 17# KMOD The name of the kernel module to build. 18# 19# KMODDIR Base path for kernel modules (see kld(4)). [/boot/kernel] 20# 21# KMODOWN Module file owner. [${BINOWN}] 22# 23# KMODGRP Module file group. [${BINGRP}] 24# 25# KMODMODE Module file mode. [${BINMODE}] 26# 27# KMODLOAD Command to load a kernel module [/sbin/kldload] 28# 29# KMODUNLOAD Command to unload a kernel module [/sbin/kldunload] 30# 31# MFILES Optionally a list of interfaces used by the module. 32# This file contains a default list of interfaces. 33# 34# PROG The name of the kernel module to build. 35# If not supplied, ${KMOD}.ko is used. 36# 37# SRCS List of source files. 38# 39# FIRMWS List of firmware images in format filename:shortname:version 40# 41# FIRMWARE_LICENSE 42# Set to the name of the license the user has to agree on in 43# order to use this firmware. See /usr/share/doc/legal 44# 45# DESTDIR The tree where the module gets installed. [not set] 46# 47# +++ targets +++ 48# 49# install: 50# install the kernel module; if the Makefile 51# does not itself define the target install, the targets 52# beforeinstall and afterinstall may also be used to cause 53# actions immediately before and after the install target 54# is executed. 55# 56# load: 57# Load a module. 58# 59# unload: 60# Unload a module. 61# 62 63AWK?= awk 64KMODLOAD?= /sbin/kldload 65KMODUNLOAD?= /sbin/kldunload 66OBJCOPY?= objcopy 67 68.include <bsd.init.mk> 69# Grab all the options for a kernel build. For backwards compat, we need to 70# do this after bsd.own.mk. 71.include "kern.opts.mk" 72.include <bsd.compiler.mk> 73.include "config.mk" 74 75.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S 76 77# amd64 and mips use direct linking for kmod, all others use shared binaries 78.if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips 79__KLD_SHARED=yes 80.else 81__KLD_SHARED=no 82.endif 83 84.if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing) 85CFLAGS+= -fno-strict-aliasing 86.endif 87WERROR?= -Werror 88CFLAGS+= ${WERROR} 89CFLAGS+= -D_KERNEL 90CFLAGS+= -DKLD_MODULE 91 92# Don't use any standard or source-relative include directories. 93NOSTDINC= -nostdinc 94CFLAGS:= ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*} 95.if defined(KERNBUILDDIR) 96CFLAGS+= -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h 97.endif 98 99# Add -I paths for system headers. Individual module makefiles don't 100# need any -I paths for this. Similar defaults for .PATH can't be 101# set because there are no standard paths for non-headers. 102CFLAGS+= -I. -I${SYSDIR} 103 104CFLAGS.gcc+= -finline-limit=${INLINE_LIMIT} 105CFLAGS.gcc+= -fms-extensions 106CFLAGS.gcc+= --param inline-unit-growth=100 107CFLAGS.gcc+= --param large-function-growth=1000 108 109# Disallow common variables, and if we end up with commons from 110# somewhere unexpected, allocate storage for them in the module itself. 111CFLAGS+= -fno-common 112LDFLAGS+= -d -warn-common 113 114CFLAGS+= ${DEBUG_FLAGS} 115.if ${MACHINE_CPUARCH} == amd64 116CFLAGS+= -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer 117.endif 118 119# Temporary workaround for PR 196407, which contains the fascinating details. 120# Don't allow clang to use fpu instructions or registers in kernel modules. 121.if ${MACHINE_CPUARCH} == arm 122CFLAGS.clang+= -mllvm -arm-use-movt=0 123CFLAGS.clang+= -mfpu=none 124CFLAGS+= -funwind-tables 125.endif 126 127.if ${MACHINE_CPUARCH} == powerpc 128CFLAGS+= -mlongcall -fno-omit-frame-pointer 129.endif 130 131.if ${MACHINE_CPUARCH} == mips 132CFLAGS+= -G0 -fno-pic -mno-abicalls -mlong-calls 133.endif 134 135.if defined(DEBUG) || defined(DEBUG_FLAGS) 136CTFFLAGS+= -g 137.endif 138 139.if defined(FIRMWS) 140${KMOD:S/$/.c/}: ${SYSDIR}/tools/fw_stub.awk 141 ${AWK} -f ${SYSDIR}/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \ 142 ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE} 143 144SRCS+= ${KMOD:S/$/.c/} 145CLEANFILES+= ${KMOD:S/$/.c/} 146 147.for _firmw in ${FIRMWS} 148${_firmw:C/\:.*$/.fwo/}: ${_firmw:C/\:.*$//} 149 @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}} 150 @if [ -e ${_firmw:C/\:.*$//} ]; then \ 151 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS} \ 152 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \ 153 else \ 154 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \ 155 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS} \ 156 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \ 157 rm ${_firmw:C/\:.*$//}; \ 158 fi 159 160OBJS+= ${_firmw:C/\:.*$/.fwo/} 161.endfor 162.endif 163 164# Conditionally include SRCS based on kernel config options. 165.for _o in ${KERN_OPTS} 166SRCS+=${SRCS.${_o}} 167.endfor 168 169OBJS+= ${SRCS:N*.h:R:S/$/.o/g} 170 171.if !defined(PROG) 172PROG= ${KMOD}.ko 173.endif 174 175.if !defined(DEBUG_FLAGS) 176FULLPROG= ${PROG} 177.else 178FULLPROG= ${PROG}.debug 179${PROG}: ${FULLPROG} ${PROG}.symbols 180 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.symbols\ 181 ${FULLPROG} ${.TARGET} 182${PROG}.symbols: ${FULLPROG} 183 ${OBJCOPY} --only-keep-debug ${FULLPROG} ${.TARGET} 184.endif 185 186.if ${__KLD_SHARED} == yes 187${FULLPROG}: ${KMOD}.kld 188 ${LD} -Bshareable ${_LDFLAGS} -o ${.TARGET} ${KMOD}.kld 189.if !defined(DEBUG_FLAGS) 190 ${OBJCOPY} --strip-debug ${.TARGET} 191.endif 192.endif 193 194EXPORT_SYMS?= NO 195.if ${EXPORT_SYMS} != YES 196CLEANFILES+= export_syms 197.endif 198 199.if ${__KLD_SHARED} == yes 200${KMOD}.kld: ${OBJS} 201.else 202${FULLPROG}: ${OBJS} 203.endif 204 ${LD} ${_LDFLAGS} -r -d -o ${.TARGET} ${OBJS} 205.if ${MK_CTF} != "no" 206 ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS} 207.endif 208.if defined(EXPORT_SYMS) 209.if ${EXPORT_SYMS} != YES 210.if ${EXPORT_SYMS} == NO 211 :> export_syms 212.elif !exists(${.CURDIR}/${EXPORT_SYMS}) 213 echo ${EXPORT_SYMS} > export_syms 214.else 215 grep -v '^#' < ${EXPORT_SYMS} > export_syms 216.endif 217 awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \ 218 export_syms | xargs -J% ${OBJCOPY} % ${.TARGET} 219.endif 220.endif 221.if !defined(DEBUG_FLAGS) && ${__KLD_SHARED} == no 222 ${OBJCOPY} --strip-debug ${.TARGET} 223.endif 224 225_ILINKS=machine 226.if ${MACHINE} != ${MACHINE_CPUARCH} 227_ILINKS+=${MACHINE_CPUARCH} 228.endif 229.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64" 230_ILINKS+=x86 231.endif 232CLEANFILES+=${_ILINKS} 233 234all: objwarn ${PROG} 235 236beforedepend: ${_ILINKS} 237 238# Ensure that the links exist without depending on it when it exists which 239# causes all the modules to be rebuilt when the directory pointed to changes. 240.for _link in ${_ILINKS} 241.if !exists(${.OBJDIR}/${_link}) 242${OBJS}: ${_link} 243.endif 244.endfor 245 246# Search for kernel source tree in standard places. 247.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys 248.if !defined(SYSDIR) && exists(${_dir}/kern/) 249SYSDIR= ${_dir} 250.endif 251.endfor 252.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) 253.error "can't find kernel source tree" 254.endif 255 256.NOPATH: ${_ILINKS} 257 258${_ILINKS}: 259 @case ${.TARGET} in \ 260 machine) \ 261 path=${SYSDIR}/${MACHINE}/include ;; \ 262 *) \ 263 path=${SYSDIR}/${.TARGET:T}/include ;; \ 264 esac ; \ 265 path=`(cd $$path && /bin/pwd)` ; \ 266 ${ECHO} ${.TARGET:T} "->" $$path ; \ 267 ln -sf $$path ${.TARGET:T} 268 269CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} 270 271.if defined(DEBUG_FLAGS) 272CLEANFILES+= ${FULLPROG} ${PROG}.symbols 273.endif 274 275.if !target(install) 276 277_INSTALLFLAGS:= ${INSTALLFLAGS} 278.for ie in ${INSTALLFLAGS_EDIT} 279_INSTALLFLAGS:= ${_INSTALLFLAGS${ie}} 280.endfor 281 282.if !target(realinstall) 283realinstall: _kmodinstall 284.ORDER: beforeinstall _kmodinstall 285_kmodinstall: 286 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 287 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR} 288.if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no" 289 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 290 ${_INSTALLFLAGS} ${PROG}.symbols ${DESTDIR}${KMODDIR} 291.endif 292 293.include <bsd.links.mk> 294 295.if !defined(NO_XREF) 296afterinstall: _kldxref 297.ORDER: realinstall _kldxref 298.ORDER: _installlinks _kldxref 299_kldxref: 300 @if type kldxref >/dev/null 2>&1; then \ 301 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \ 302 kldxref ${DESTDIR}${KMODDIR}; \ 303 fi 304.endif 305.endif # !target(realinstall) 306 307.endif # !target(install) 308 309.if !target(load) 310load: ${PROG} 311 ${KMODLOAD} -v ${.OBJDIR}/${PROG} 312.endif 313 314.if !target(unload) 315unload: 316 ${KMODUNLOAD} -v ${PROG} 317.endif 318 319.if defined(KERNBUILDDIR) 320.PATH: ${KERNBUILDDIR} 321CFLAGS+= -I${KERNBUILDDIR} 322.for _src in ${SRCS:Mopt_*.h} 323CLEANFILES+= ${_src} 324.if !target(${_src}) 325${_src}: 326 ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET} 327.endif 328.endfor 329.else 330.for _src in ${SRCS:Mopt_*.h} 331CLEANFILES+= ${_src} 332.if !target(${_src}) 333${_src}: 334 :> ${.TARGET} 335.endif 336.endfor 337.endif 338 339# Respect configuration-specific C flags. 340CFLAGS+= ${CONF_CFLAGS} 341 342MFILES?= dev/acpica/acpi_if.m dev/acpi_support/acpi_wmi_if.m \ 343 dev/agp/agp_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \ 344 dev/fb/fb_if.m dev/gpio/gpio_if.m dev/gpio/gpiobus_if.m \ 345 dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \ 346 dev/mbox/mbox_if.m dev/mmc/mmcbr_if.m dev/mmc/mmcbus_if.m \ 347 dev/mii/miibus_if.m dev/mvs/mvs_if.m dev/ofw/ofw_bus_if.m \ 348 dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \ 349 dev/pci/pci_iov_if.m dev/pci/pcib_if.m dev/ppbus/ppbus_if.m \ 350 dev/sdhci/sdhci_if.m dev/smbus/smbus_if.m dev/spibus/spibus_if.m \ 351 dev/sound/pci/hda/hdac_if.m \ 352 dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \ 353 dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m \ 354 dev/sound/midi/mpu_if.m dev/sound/midi/mpufoi_if.m \ 355 dev/sound/midi/synth_if.m dev/usb/usb_if.m isa/isa_if.m \ 356 kern/bus_if.m kern/clock_if.m \ 357 kern/cpufreq_if.m kern/device_if.m kern/serdev_if.m \ 358 libkern/iconv_converter_if.m opencrypto/cryptodev_if.m \ 359 pc98/pc98/canbus_if.m dev/etherswitch/mdio_if.m 360 361.for _srcsrc in ${MFILES} 362.for _ext in c h 363.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}} 364CLEANFILES+= ${_src} 365.if !target(${_src}) 366${_src}: ${SYSDIR}/tools/makeobjops.awk ${SYSDIR}/${_srcsrc} 367 ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${SYSDIR}/${_srcsrc} -${_ext} 368.endif 369.endfor # _src 370.endfor # _ext 371.endfor # _srcsrc 372 373.if !empty(SRCS:Mvnode_if.c) 374CLEANFILES+= vnode_if.c 375vnode_if.c: ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src 376 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -c 377.endif 378 379.if !empty(SRCS:Mvnode_if.h) 380CLEANFILES+= vnode_if.h vnode_if_newproto.h vnode_if_typedef.h 381vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: ${SYSDIR}/tools/vnode_if.awk \ 382 ${SYSDIR}/kern/vnode_if.src 383vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h 384 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -h 385vnode_if_newproto.h: 386 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -p 387vnode_if_typedef.h: 388 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -q 389.endif 390 391.for _i in mii pccard 392.if !empty(SRCS:M${_i}devs.h) 393CLEANFILES+= ${_i}devs.h 394${_i}devs.h: ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs 395 ${AWK} -f ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs 396.endif 397.endfor # _i 398 399.if !empty(SRCS:Musbdevs.h) 400CLEANFILES+= usbdevs.h 401usbdevs.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs 402 ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -h 403.endif 404 405.if !empty(SRCS:Musbdevs_data.h) 406CLEANFILES+= usbdevs_data.h 407usbdevs_data.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs 408 ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -d 409.endif 410 411.if !empty(SRCS:Macpi_quirks.h) 412CLEANFILES+= acpi_quirks.h 413acpi_quirks.h: ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks 414 ${AWK} -f ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks 415.endif 416 417.if !empty(SRCS:Massym.s) 418CLEANFILES+= assym.s genassym.o 419assym.s: genassym.o 420.if defined(KERNBUILDDIR) 421genassym.o: opt_global.h 422.endif 423assym.s: ${SYSDIR}/kern/genassym.sh 424 sh ${SYSDIR}/kern/genassym.sh genassym.o > ${.TARGET} 425genassym.o: ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c 426genassym.o: ${SRCS:Mopt_*.h} 427 ${CC} -c ${CFLAGS:N-fno-common} \ 428 ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c 429.endif 430 431lint: ${SRCS} 432 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c} 433 434.if defined(KERNBUILDDIR) 435${OBJS}: opt_global.h 436.endif 437 438.include <bsd.dep.mk> 439 440cleandepend: cleanilinks 441# .depend needs include links so we remove them only together. 442cleanilinks: 443 rm -f ${_ILINKS} 444 445.if !exists(${.OBJDIR}/${DEPENDFILE}) 446${OBJS}: ${SRCS:M*.h} 447.endif 448 449.include <bsd.obj.mk> 450.include "kern.mk" 451