1# From: @(#)bsd.prog.mk 5.26 (Berkeley) 6/25/91 2# $FreeBSD: stable/10/sys/conf/kmod.mk 324643 2017-10-15 22:45:25Z brooks $ 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# KMODISLOADED Command to check whether a kernel module is 35# loaded [/sbin/kldstat -q -n] 36# 37# PROG The name of the kernel module to build. 38# If not supplied, ${KMOD}.ko is used. 39# 40# SRCS List of source files. 41# 42# FIRMWS List of firmware images in format filename:shortname:version 43# 44# FIRMWARE_LICENSE 45# Set to the name of the license the user has to agree on in 46# order to use this firmware. See /usr/share/doc/legal 47# 48# DESTDIR The tree where the module gets installed. [not set] 49# 50# +++ targets +++ 51# 52# install: 53# install the kernel module; if the Makefile 54# does not itself define the target install, the targets 55# beforeinstall and afterinstall may also be used to cause 56# actions immediately before and after the install target 57# is executed. 58# 59# load: 60# Load a module. 61# 62# unload: 63# Unload a module. 64# 65# reload: 66# Unload if loaded, then load. 67# 68 69# backwards compat option for older systems. 70MACHINE_CPUARCH?=${MACHINE_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb)?/arm/:C/powerpc64/powerpc/} 71 72AWK?= awk 73KMODLOAD?= /sbin/kldload 74KMODUNLOAD?= /sbin/kldunload 75KMODISLOADED?= /sbin/kldstat -q -n 76OBJCOPY?= objcopy 77 78.if defined(KMODDEPS) 79.error "Do not use KMODDEPS on 5.0+; use MODULE_VERSION/MODULE_DEPEND" 80.endif 81 82.include <bsd.init.mk> 83.include <bsd.compiler.mk> 84 85.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S 86 87# amd64 and mips use direct linking for kmod, all others use shared binaries 88.if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips 89__KLD_SHARED=yes 90.else 91__KLD_SHARED=no 92.endif 93 94.if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing) 95CFLAGS+= -fno-strict-aliasing 96.endif 97WERROR?= -Werror 98CFLAGS+= ${WERROR} 99CFLAGS+= -D_KERNEL 100CFLAGS+= -DKLD_MODULE 101 102# Don't use any standard or source-relative include directories. 103CSTD= c99 104NOSTDINC= -nostdinc 105CFLAGS:= ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*} 106.if defined(KERNBUILDDIR) 107CFLAGS+= -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h 108.endif 109 110# Add -I paths for system headers. Individual module makefiles don't 111# need any -I paths for this. Similar defaults for .PATH can't be 112# set because there are no standard paths for non-headers. 113CFLAGS+= -I. -I@ 114 115# Add -I path for altq headers as they are included via net/if_var.h 116# for example. 117CFLAGS+= -I@/contrib/altq 118 119.if ${COMPILER_TYPE} != "clang" 120CFLAGS+= -finline-limit=${INLINE_LIMIT} 121CFLAGS+= --param inline-unit-growth=100 122CFLAGS+= --param large-function-growth=1000 123.endif 124 125# Disallow common variables, and if we end up with commons from 126# somewhere unexpected, allocate storage for them in the module itself. 127CFLAGS+= -fno-common 128LDFLAGS+= -d -warn-common 129 130CFLAGS+= ${DEBUG_FLAGS} 131.if ${MACHINE_CPUARCH} == amd64 132CFLAGS+= -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer 133.endif 134 135# Temporary workaround for PR 196407, which contains the fascinating details. 136# Don't allow clang to use fpu instructions or registers in kernel modules. 137.if ${MACHINE_CPUARCH} == arm 138CFLAGS.clang+= -mllvm -arm-use-movt=0 139CFLAGS.clang+= -mfpu=none 140.endif 141 142.if ${MACHINE_CPUARCH} == powerpc 143CFLAGS+= -mlongcall -fno-omit-frame-pointer 144.endif 145 146.if ${MACHINE_CPUARCH} == mips 147CFLAGS+= -G0 -fno-pic -mno-abicalls -mlong-calls 148.endif 149 150.if defined(DEBUG) || defined(DEBUG_FLAGS) 151CTFFLAGS+= -g 152.endif 153 154.if defined(FIRMWS) 155.if !exists(@) 156${KMOD:S/$/.c/}: @ 157.else 158${KMOD:S/$/.c/}: @/tools/fw_stub.awk 159.endif 160 ${AWK} -f @/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \ 161 ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE} 162 163SRCS+= ${KMOD:S/$/.c/} 164CLEANFILES+= ${KMOD:S/$/.c/} 165 166.for _firmw in ${FIRMWS} 167${_firmw:C/\:.*$/.fwo/:T}: ${_firmw:C/\:.*$//} 168 @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}} 169 @if [ -e ${_firmw:C/\:.*$//} ]; then \ 170 ${LD} -b binary --no-warn-mismatch ${LDFLAGS} \ 171 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \ 172 else \ 173 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \ 174 ${LD} -b binary --no-warn-mismatch ${LDFLAGS} \ 175 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \ 176 rm ${_firmw:C/\:.*$//}; \ 177 fi 178 179OBJS+= ${_firmw:C/\:.*$/.fwo/:T} 180.endfor 181.endif 182 183OBJS+= ${SRCS:N*.h:R:S/$/.o/g} 184 185.if !defined(PROG) 186PROG= ${KMOD}.ko 187.endif 188 189.if !defined(DEBUG_FLAGS) 190FULLPROG= ${PROG} 191.else 192FULLPROG= ${PROG}.debug 193${PROG}: ${FULLPROG} ${PROG}.symbols 194 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.symbols\ 195 ${FULLPROG} ${.TARGET} 196${PROG}.symbols: ${FULLPROG} 197 ${OBJCOPY} --only-keep-debug ${FULLPROG} ${.TARGET} 198.endif 199 200.if ${__KLD_SHARED} == yes 201${FULLPROG}: ${KMOD}.kld 202 ${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld 203.if !defined(DEBUG_FLAGS) 204 ${OBJCOPY} --strip-debug ${.TARGET} 205.endif 206.endif 207 208EXPORT_SYMS?= NO 209.if ${EXPORT_SYMS} != YES 210CLEANFILES+= export_syms 211.endif 212 213.if ${__KLD_SHARED} == yes 214${KMOD}.kld: ${OBJS} 215.else 216${FULLPROG}: ${OBJS} 217.endif 218 ${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS} 219.if defined(MK_CTF) && ${MK_CTF} != "no" 220 ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS} 221.endif 222.if defined(EXPORT_SYMS) 223.if ${EXPORT_SYMS} != YES 224.if ${EXPORT_SYMS} == NO 225 :> export_syms 226.elif !exists(${.CURDIR}/${EXPORT_SYMS}) 227 echo ${EXPORT_SYMS} > export_syms 228.else 229 grep -v '^#' < ${EXPORT_SYMS} > export_syms 230.endif 231 awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \ 232 export_syms | xargs -J% ${OBJCOPY} % ${.TARGET} 233.endif 234.endif 235.if !defined(DEBUG_FLAGS) && ${__KLD_SHARED} == no 236 ${OBJCOPY} --strip-debug ${.TARGET} 237.endif 238 239_ILINKS=@ machine 240.if ${MACHINE} != ${MACHINE_CPUARCH} 241_ILINKS+=${MACHINE_CPUARCH} 242.endif 243.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64" 244_ILINKS+=x86 245.endif 246 247all: objwarn ${PROG} 248 249beforedepend: ${_ILINKS} 250 251# Ensure that the links exist without depending on it when it exists which 252# causes all the modules to be rebuilt when the directory pointed to changes. 253.for _link in ${_ILINKS} 254.if !exists(${.OBJDIR}/${_link}) 255${OBJS}: ${.OBJDIR}/${_link} 256.endif 257.endfor 258 259# Search for kernel source tree in standard places. 260.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys 261.if !defined(SYSDIR) && exists(${_dir}/kern/) 262SYSDIR= ${_dir} 263.endif 264.endfor 265.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) 266.error "can't find kernel source tree" 267.endif 268 269.for _link in ${_ILINKS} 270.PHONY: ${_link} 271${_link}: ${.OBJDIR}/${_link} 272 273${.OBJDIR}/${_link}: 274 @case ${.TARGET:T} in \ 275 machine) \ 276 path=${SYSDIR}/${MACHINE}/include ;; \ 277 @) \ 278 path=${SYSDIR} ;; \ 279 *) \ 280 path=${SYSDIR}/${.TARGET:T}/include ;; \ 281 esac ; \ 282 path=`(cd $$path && /bin/pwd)` ; \ 283 ${ECHO} ${.TARGET:T} "->" $$path ; \ 284 ln -sf $$path ${.TARGET:T} 285.endfor 286 287CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} 288 289.if defined(DEBUG_FLAGS) 290CLEANFILES+= ${FULLPROG} ${PROG}.symbols 291.endif 292 293.if !target(install) 294 295_INSTALLFLAGS:= ${INSTALLFLAGS} 296.for ie in ${INSTALLFLAGS_EDIT} 297_INSTALLFLAGS:= ${_INSTALLFLAGS${ie}} 298.endfor 299 300.if !target(realinstall) 301realinstall: _kmodinstall 302.ORDER: beforeinstall _kmodinstall 303_kmodinstall: 304 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 305 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR} 306.if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no" 307 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 308 ${_INSTALLFLAGS} ${PROG}.symbols ${DESTDIR}${KMODDIR} 309.endif 310 311.include <bsd.links.mk> 312 313.if !defined(NO_XREF) 314afterinstall: _kldxref 315.ORDER: realinstall _kldxref 316.ORDER: _installlinks _kldxref 317_kldxref: 318 @if type kldxref >/dev/null 2>&1; then \ 319 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \ 320 kldxref ${DESTDIR}${KMODDIR}; \ 321 fi 322.endif 323.endif # !target(realinstall) 324 325.endif # !target(install) 326 327.if !target(load) 328load: ${PROG} 329 ${KMODLOAD} -v ${.OBJDIR}/${PROG} 330.endif 331 332.if !target(unload) 333unload: 334 if ${KMODISLOADED} ${PROG} ; then ${KMODUNLOAD} -v ${PROG} ; fi 335.endif 336 337.if !target(reload) 338reload: unload load 339.endif 340 341.if defined(KERNBUILDDIR) 342.PATH: ${KERNBUILDDIR} 343CFLAGS+= -I${KERNBUILDDIR} 344.for _src in ${SRCS:Mopt_*.h} 345CLEANFILES+= ${_src} 346.if !target(${_src}) 347${_src}: 348 ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET} 349.endif 350.endfor 351.else 352.for _src in ${SRCS:Mopt_*.h} 353CLEANFILES+= ${_src} 354.if !target(${_src}) 355${_src}: 356 :> ${.TARGET} 357.endif 358.endfor 359.endif 360 361# Respect configuration-specific C flags. 362CFLAGS+= ${ARCH_FLAGS} ${CONF_CFLAGS} 363 364MFILES?= dev/acpica/acpi_if.m dev/acpi_support/acpi_wmi_if.m \ 365 dev/agp/agp_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \ 366 dev/fb/fb_if.m dev/gpio/gpio_if.m dev/gpio/gpiobus_if.m \ 367 dev/hyperv/vmbus/vmbus_if.m \ 368 dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \ 369 dev/mmc/mmcbr_if.m dev/mmc/mmcbus_if.m \ 370 dev/mii/miibus_if.m dev/mvs/mvs_if.m dev/ofw/ofw_bus_if.m \ 371 dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \ 372 dev/pci/pcib_if.m dev/ppbus/ppbus_if.m \ 373 dev/sdhci/sdhci_if.m dev/smbus/smbus_if.m dev/spibus/spibus_if.m \ 374 dev/sound/pci/hda/hdac_if.m \ 375 dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \ 376 dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m \ 377 dev/sound/midi/mpu_if.m dev/sound/midi/mpufoi_if.m \ 378 dev/sound/midi/synth_if.m dev/usb/usb_if.m isa/isa_if.m \ 379 kern/bus_if.m kern/clock_if.m \ 380 kern/cpufreq_if.m kern/device_if.m kern/serdev_if.m \ 381 libkern/iconv_converter_if.m opencrypto/cryptodev_if.m \ 382 pc98/pc98/canbus_if.m dev/etherswitch/mdio_if.m 383 384.for _srcsrc in ${MFILES} 385.for _ext in c h 386.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}} 387CLEANFILES+= ${_src} 388.if !target(${_src}) 389.if !exists(@) 390${_src}: @ 391.else 392${_src}: @/tools/makeobjops.awk @/${_srcsrc} 393.endif 394 ${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext} 395.endif 396.endfor # _src 397.endfor # _ext 398.endfor # _srcsrc 399 400.if !empty(SRCS:Mvnode_if.c) 401CLEANFILES+= vnode_if.c 402.if !exists(@) 403vnode_if.c: @ 404.else 405vnode_if.c: @/tools/vnode_if.awk @/kern/vnode_if.src 406.endif 407 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -c 408.endif 409 410.if !empty(SRCS:Mvnode_if.h) 411CLEANFILES+= vnode_if.h vnode_if_newproto.h vnode_if_typedef.h 412.if !exists(@) 413vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @ 414.else 415vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @/tools/vnode_if.awk \ 416 @/kern/vnode_if.src 417.endif 418vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h 419 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -h 420vnode_if_newproto.h: 421 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -p 422vnode_if_typedef.h: 423 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -q 424.endif 425 426.for _i in mii pccard 427.if !empty(SRCS:M${_i}devs.h) 428CLEANFILES+= ${_i}devs.h 429.if !exists(@) 430${_i}devs.h: @ 431.else 432${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs 433.endif 434 ${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs 435.endif 436.endfor # _i 437 438.if !empty(SRCS:Musbdevs.h) 439CLEANFILES+= usbdevs.h 440.if !exists(@) 441usbdevs.h: @ 442.else 443usbdevs.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs 444.endif 445 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -h 446.endif 447 448.if !empty(SRCS:Musbdevs_data.h) 449CLEANFILES+= usbdevs_data.h 450.if !exists(@) 451usbdevs_data.h: @ 452.else 453usbdevs_data.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs 454.endif 455 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -d 456.endif 457 458.if !empty(SRCS:Macpi_quirks.h) 459CLEANFILES+= acpi_quirks.h 460.if !exists(@) 461acpi_quirks.h: @ 462.else 463acpi_quirks.h: @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks 464.endif 465 ${AWK} -f @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks 466.endif 467 468.if !empty(SRCS:Massym.s) 469CLEANFILES+= assym.s genassym.o 470assym.s: genassym.o 471.if defined(KERNBUILDDIR) 472genassym.o: opt_global.h 473.endif 474.if !exists(@) 475assym.s: @ 476.else 477assym.s: @/kern/genassym.sh 478.endif 479 sh @/kern/genassym.sh genassym.o > ${.TARGET} 480.if exists(@) 481genassym.o: @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c 482.endif 483genassym.o: @ machine ${SRCS:Mopt_*.h} 484 ${CC} -c ${CFLAGS:N-fno-common} \ 485 @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c 486.endif 487 488lint: ${SRCS} 489 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c} 490 491.if defined(KERNBUILDDIR) 492${OBJS}: opt_global.h 493.endif 494 495.include <bsd.dep.mk> 496 497cleandepend: cleanilinks 498# .depend needs include links so we remove them only together. 499cleanilinks: 500 rm -f ${_ILINKS} 501 502.if !exists(${.OBJDIR}/${DEPENDFILE}) 503${OBJS}: ${SRCS:M*.h} 504.endif 505 506.include <bsd.obj.mk> 507.include "kern.mk" 508