Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/conf/kmod.mk
Version:
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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 # 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, ${KMOD}.ko is used. 39 # 40 # SRCS List of source files. 41 # 42 # FIRMWS List of firmware images in format filename:shortname:version 43 # 44 # FIRMWARE_LICENSE 45 # Set to the name of the license the user has to agree on in 46 # order to use this firmware. See /usr/share/doc/legal 47 # 48 # DESTDIR The tree where the module gets installed. [not set] 49 # 50 # +++ targets +++ 51 # 52 # install: 53 # install the kernel module; if the Makefile 54 # does not itself define the target install, the targets 55 # beforeinstall and afterinstall may also be used to cause 56 # actions immediately before and after the install target 57 # is executed. 58 # 59 # load: 60 # Load a module. 61 # 62 # unload: 63 # Unload a module. 64 # 65 # reload: 66 # Unload if loaded, then load. 67 # 68 69 # backwards compat option for older systems. 70 MACHINE_CPUARCH?=${MACHINE_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb)?/arm/:C/powerpc64/powerpc/} 71 72 AWK?= awk 73 KMODLOAD?= /sbin/kldload 74 KMODUNLOAD?= /sbin/kldunload 75 KMODISLOADED?= /sbin/kldstat -q -n 76 OBJCOPY?= 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) 95 CFLAGS+= -fno-strict-aliasing 96 .endif 97 WERROR?= -Werror 98 CFLAGS+= ${WERROR} 99 CFLAGS+= -D_KERNEL 100 CFLAGS+= -DKLD_MODULE 101 102 # Don't use any standard or source-relative include directories. 103 CSTD= c99 104 NOSTDINC= -nostdinc 105 CFLAGS:= ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*} 106 .if defined(KERNBUILDDIR) 107 CFLAGS+= -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. 113 CFLAGS+= -I. -I@ 114 115 # Add -I path for altq headers as they are included via net/if_var.h 116 # for example. 117 CFLAGS+= -I@/contrib/altq 118 119 .if ${COMPILER_TYPE} != "clang" 120 CFLAGS+= -finline-limit=${INLINE_LIMIT} 121 CFLAGS+= --param inline-unit-growth=100 122 CFLAGS+= --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. 127 CFLAGS+= -fno-common 128 LDFLAGS+= -d -warn-common 129 130 CFLAGS+= ${DEBUG_FLAGS} 131 .if ${MACHINE_CPUARCH} == amd64 132 CFLAGS+= -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 138 CFLAGS.clang+= -mllvm -arm-use-movt=0 139 CFLAGS.clang+= -mfpu=none 140 .endif 141 142 .if ${MACHINE_CPUARCH} == powerpc 143 CFLAGS+= -mlongcall -fno-omit-frame-pointer 144 .endif 145 146 .if ${MACHINE_CPUARCH} == mips 147 CFLAGS+= -G0 -fno-pic -mno-abicalls -mlong-calls 148 .endif 149 150 .if defined(DEBUG) || defined(DEBUG_FLAGS) 151 CTFFLAGS+= -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} 162 163 SRCS+= ${KMOD:S/$/.c/} 164 CLEANFILES+= ${KMOD:S/$/.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 178 179 OBJS+= ${_firmw:C/\:.*$/.fwo/:T} 180 .endfor 181 .endif 182 183 OBJS+= ${SRCS:N*.h:R:S/$/.o/g} 184 185 .if !defined(PROG) 186 PROG= ${KMOD}.ko 187 .endif 188 189 .if !defined(DEBUG_FLAGS) 190 FULLPROG= ${PROG} 191 .else 192 FULLPROG= ${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 207 208 EXPORT_SYMS?= NO 209 .if ${EXPORT_SYMS} != YES 210 CLEANFILES+= 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 246 247 all: objwarn ${PROG} 248 249 beforedepend: ${_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/) 262 SYSDIR= ${_dir} 263 .endif 264 .endfor 265 .if !defined(SYSDIR) || !exists(${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 286 287 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} 288 289 .if defined(DEBUG_FLAGS) 290 CLEANFILES+= ${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) 301 realinstall: _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) 314 afterinstall: _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) 328 load: ${PROG} 329 ${KMODLOAD} -v ${.OBJDIR}/${PROG} 330 .endif 331 332 .if !target(unload) 333 unload: 334 if ${KMODISLOADED} ${PROG} ; then ${KMODUNLOAD} -v ${PROG} ; fi 335 .endif 336 337 .if !target(reload) 338 reload: unload load 339 .endif 340 341 .if defined(KERNBUILDDIR) 342 .PATH: ${KERNBUILDDIR} 343 CFLAGS+= -I${KERNBUILDDIR} 344 .for _src in ${SRCS:Mopt_*.h} 345 CLEANFILES+= ${_src} 346 .if !target(${_src}) 347 ${_src}: 348 ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET} 349 .endif 350 .endfor 351 .else 352 .for _src in ${SRCS:Mopt_*.h} 353 CLEANFILES+= ${_src} 354 .if !target(${_src}) 355 ${_src}: 356 :> ${.TARGET} 357 .endif 358 .endfor 359 .endif 360 361 # Respect configuration-specific C flags. 362 CFLAGS+= ${ARCH_FLAGS} ${CONF_CFLAGS} 363 364 MFILES?= 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}} 387 CLEANFILES+= ${_src} 388 .if !target(${_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) 401 CLEANFILES+= vnode_if.c 402 .if !exists(@) 403 vnode_if.c: @ 404 .else 405 vnode_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) 411 CLEANFILES+= vnode_if.h vnode_if_newproto.h vnode_if_typedef.h 412 .if !exists(@) 413 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @ 414 .else 415 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @/tools/vnode_if.awk \ 416 @/kern/vnode_if.src 417 .endif 418 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h 419 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -h 420 vnode_if_newproto.h: 421 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -p 422 vnode_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) 428 CLEANFILES+= ${_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) 439 CLEANFILES+= usbdevs.h 440 .if !exists(@) 441 usbdevs.h: @ 442 .else 443 usbdevs.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) 449 CLEANFILES+= usbdevs_data.h 450 .if !exists(@) 451 usbdevs_data.h: @ 452 .else 453 usbdevs_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) 459 CLEANFILES+= acpi_quirks.h 460 .if !exists(@) 461 acpi_quirks.h: @ 462 .else 463 acpi_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) 469 CLEANFILES+= assym.s genassym.o 470 assym.s: genassym.o 471 .if defined(KERNBUILDDIR) 472 genassym.o: opt_global.h 473 .endif 474 .if !exists(@) 475 assym.s: @ 476 .else 477 assym.s: @/kern/genassym.sh 478 .endif 479 sh @/kern/genassym.sh genassym.o > ${.TARGET} 480 .if exists(@) 481 genassym.o: @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c 482 .endif 483 genassym.o: @ machine ${SRCS:Mopt_*.h} 484 ${CC} -c ${CFLAGS:N-fno-common} \ 485 @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c 486 .endif 487 488 lint: ${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> 496 497 cleandepend: cleanilinks 498 # .depend needs include links so we remove them only together. 499 cleanilinks: 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"
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