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
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1 # From: @(#)bsd.prog.mk 5.26 (Berkeley) 6/25/91 2 # $FreeBSD: releng/10.2/sys/conf/kmod.mk 278678 2015-02-13 15:41:28Z ian $ 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, ${KMOD}.ko is used. 36 # 37 # SRCS List of source files. 38 # 39 # FIRMWS List of firmware images in format filename:shortname:version 40 # 41 # FIRMWARE_LICENSE 42 # Set to the name of the license the user has to agree on in 43 # order to use this firmware. See /usr/share/doc/legal 44 # 45 # DESTDIR The tree where the module gets installed. [not set] 46 # 47 # +++ targets +++ 48 # 49 # install: 50 # install the kernel module; if the Makefile 51 # does not itself define the target install, the targets 52 # beforeinstall and afterinstall may also be used to cause 53 # actions immediately before and after the install target 54 # is executed. 55 # 56 # load: 57 # Load a module. 58 # 59 # unload: 60 # Unload a module. 61 # 62 63 # backwards compat option for older systems. 64 MACHINE_CPUARCH?=${MACHINE_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb)?/arm/:C/powerpc64/powerpc/} 65 66 AWK?= awk 67 KMODLOAD?= /sbin/kldload 68 KMODUNLOAD?= /sbin/kldunload 69 OBJCOPY?= objcopy 70 71 .if defined(KMODDEPS) 72 .error "Do not use KMODDEPS on 5.0+; use MODULE_VERSION/MODULE_DEPEND" 73 .endif 74 75 .include <bsd.init.mk> 76 .include <bsd.compiler.mk> 77 78 .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S 79 80 # amd64 and mips use direct linking for kmod, all others use shared binaries 81 .if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips 82 __KLD_SHARED=yes 83 .else 84 __KLD_SHARED=no 85 .endif 86 87 .if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing) 88 CFLAGS+= -fno-strict-aliasing 89 .endif 90 WERROR?= -Werror 91 CFLAGS+= ${WERROR} 92 CFLAGS+= -D_KERNEL 93 CFLAGS+= -DKLD_MODULE 94 95 # Don't use any standard or source-relative include directories. 96 CSTD= c99 97 NOSTDINC= -nostdinc 98 CFLAGS:= ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*} 99 .if defined(KERNBUILDDIR) 100 CFLAGS+= -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h 101 .endif 102 103 # Add -I paths for system headers. Individual module makefiles don't 104 # need any -I paths for this. Similar defaults for .PATH can't be 105 # set because there are no standard paths for non-headers. 106 CFLAGS+= -I. -I@ 107 108 # Add -I path for altq headers as they are included via net/if_var.h 109 # for example. 110 CFLAGS+= -I@/contrib/altq 111 112 .if ${COMPILER_TYPE} != "clang" 113 CFLAGS+= -finline-limit=${INLINE_LIMIT} 114 CFLAGS+= --param inline-unit-growth=100 115 CFLAGS+= --param large-function-growth=1000 116 .endif 117 118 # Disallow common variables, and if we end up with commons from 119 # somewhere unexpected, allocate storage for them in the module itself. 120 CFLAGS+= -fno-common 121 LDFLAGS+= -d -warn-common 122 123 CFLAGS+= ${DEBUG_FLAGS} 124 .if ${MACHINE_CPUARCH} == amd64 125 CFLAGS+= -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer 126 .endif 127 128 # Temporary workaround for PR 196407, which contains the fascinating details. 129 # Don't allow clang to use fpu instructions or registers in kernel modules. 130 .if ${MACHINE_CPUARCH} == arm 131 CFLAGS.clang+= -mllvm -arm-use-movt=0 132 CFLAGS.clang+= -mfpu=none 133 .endif 134 135 .if ${MACHINE_CPUARCH} == powerpc 136 CFLAGS+= -mlongcall -fno-omit-frame-pointer 137 .endif 138 139 .if ${MACHINE_CPUARCH} == mips 140 CFLAGS+= -G0 -fno-pic -mno-abicalls -mlong-calls 141 .endif 142 143 .if defined(DEBUG) || defined(DEBUG_FLAGS) 144 CTFFLAGS+= -g 145 .endif 146 147 .if defined(FIRMWS) 148 .if !exists(@) 149 ${KMOD:S/$/.c/}: @ 150 .else 151 ${KMOD:S/$/.c/}: @/tools/fw_stub.awk 152 .endif 153 ${AWK} -f @/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \ 154 ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE} 155 156 SRCS+= ${KMOD:S/$/.c/} 157 CLEANFILES+= ${KMOD:S/$/.c/} 158 159 .for _firmw in ${FIRMWS} 160 ${_firmw:C/\:.*$/.fwo/}: ${_firmw:C/\:.*$//} 161 @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}} 162 @if [ -e ${_firmw:C/\:.*$//} ]; then \ 163 ${LD} -b binary --no-warn-mismatch ${LDFLAGS} \ 164 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \ 165 else \ 166 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \ 167 ${LD} -b binary --no-warn-mismatch ${LDFLAGS} \ 168 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \ 169 rm ${_firmw:C/\:.*$//}; \ 170 fi 171 172 OBJS+= ${_firmw:C/\:.*$/.fwo/} 173 .endfor 174 .endif 175 176 OBJS+= ${SRCS:N*.h:R:S/$/.o/g} 177 178 .if !defined(PROG) 179 PROG= ${KMOD}.ko 180 .endif 181 182 .if !defined(DEBUG_FLAGS) 183 FULLPROG= ${PROG} 184 .else 185 FULLPROG= ${PROG}.debug 186 ${PROG}: ${FULLPROG} ${PROG}.symbols 187 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.symbols\ 188 ${FULLPROG} ${.TARGET} 189 ${PROG}.symbols: ${FULLPROG} 190 ${OBJCOPY} --only-keep-debug ${FULLPROG} ${.TARGET} 191 .endif 192 193 .if ${__KLD_SHARED} == yes 194 ${FULLPROG}: ${KMOD}.kld 195 ${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld 196 .if !defined(DEBUG_FLAGS) 197 ${OBJCOPY} --strip-debug ${.TARGET} 198 .endif 199 .endif 200 201 EXPORT_SYMS?= NO 202 .if ${EXPORT_SYMS} != YES 203 CLEANFILES+= export_syms 204 .endif 205 206 .if ${__KLD_SHARED} == yes 207 ${KMOD}.kld: ${OBJS} 208 .else 209 ${FULLPROG}: ${OBJS} 210 .endif 211 ${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS} 212 .if defined(MK_CTF) && ${MK_CTF} != "no" 213 ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS} 214 .endif 215 .if defined(EXPORT_SYMS) 216 .if ${EXPORT_SYMS} != YES 217 .if ${EXPORT_SYMS} == NO 218 :> export_syms 219 .elif !exists(${.CURDIR}/${EXPORT_SYMS}) 220 echo ${EXPORT_SYMS} > export_syms 221 .else 222 grep -v '^#' < ${EXPORT_SYMS} > export_syms 223 .endif 224 awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \ 225 export_syms | xargs -J% ${OBJCOPY} % ${.TARGET} 226 .endif 227 .endif 228 .if !defined(DEBUG_FLAGS) && ${__KLD_SHARED} == no 229 ${OBJCOPY} --strip-debug ${.TARGET} 230 .endif 231 232 _ILINKS=@ machine 233 .if ${MACHINE} != ${MACHINE_CPUARCH} 234 _ILINKS+=${MACHINE_CPUARCH} 235 .endif 236 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64" 237 _ILINKS+=x86 238 .endif 239 240 all: objwarn ${PROG} 241 242 beforedepend: ${_ILINKS} 243 244 # Ensure that the links exist without depending on it when it exists which 245 # causes all the modules to be rebuilt when the directory pointed to changes. 246 .for _link in ${_ILINKS} 247 .if !exists(${.OBJDIR}/${_link}) 248 ${OBJS}: ${.OBJDIR}/${_link} 249 .endif 250 .endfor 251 252 # Search for kernel source tree in standard places. 253 .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys 254 .if !defined(SYSDIR) && exists(${_dir}/kern/) 255 SYSDIR= ${_dir} 256 .endif 257 .endfor 258 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) 259 .error "can't find kernel source tree" 260 .endif 261 262 .for _link in ${_ILINKS} 263 .PHONY: ${_link} 264 ${_link}: ${.OBJDIR}/${_link} 265 266 ${.OBJDIR}/${_link}: 267 @case ${.TARGET:T} in \ 268 machine) \ 269 path=${SYSDIR}/${MACHINE}/include ;; \ 270 @) \ 271 path=${SYSDIR} ;; \ 272 *) \ 273 path=${SYSDIR}/${.TARGET:T}/include ;; \ 274 esac ; \ 275 path=`(cd $$path && /bin/pwd)` ; \ 276 ${ECHO} ${.TARGET:T} "->" $$path ; \ 277 ln -sf $$path ${.TARGET:T} 278 .endfor 279 280 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} 281 282 .if defined(DEBUG_FLAGS) 283 CLEANFILES+= ${FULLPROG} ${PROG}.symbols 284 .endif 285 286 .if !target(install) 287 288 _INSTALLFLAGS:= ${INSTALLFLAGS} 289 .for ie in ${INSTALLFLAGS_EDIT} 290 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}} 291 .endfor 292 293 .if !target(realinstall) 294 realinstall: _kmodinstall 295 .ORDER: beforeinstall _kmodinstall 296 _kmodinstall: 297 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 298 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR} 299 .if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no" 300 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 301 ${_INSTALLFLAGS} ${PROG}.symbols ${DESTDIR}${KMODDIR} 302 .endif 303 304 .include <bsd.links.mk> 305 306 .if !defined(NO_XREF) 307 afterinstall: _kldxref 308 .ORDER: realinstall _kldxref 309 .ORDER: _installlinks _kldxref 310 _kldxref: 311 @if type kldxref >/dev/null 2>&1; then \ 312 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \ 313 kldxref ${DESTDIR}${KMODDIR}; \ 314 fi 315 .endif 316 .endif # !target(realinstall) 317 318 .endif # !target(install) 319 320 .if !target(load) 321 load: ${PROG} 322 ${KMODLOAD} -v ${.OBJDIR}/${PROG} 323 .endif 324 325 .if !target(unload) 326 unload: 327 ${KMODUNLOAD} -v ${PROG} 328 .endif 329 330 .if defined(KERNBUILDDIR) 331 .PATH: ${KERNBUILDDIR} 332 CFLAGS+= -I${KERNBUILDDIR} 333 .for _src in ${SRCS:Mopt_*.h} 334 CLEANFILES+= ${_src} 335 .if !target(${_src}) 336 ${_src}: 337 ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET} 338 .endif 339 .endfor 340 .else 341 .for _src in ${SRCS:Mopt_*.h} 342 CLEANFILES+= ${_src} 343 .if !target(${_src}) 344 ${_src}: 345 :> ${.TARGET} 346 .endif 347 .endfor 348 .endif 349 350 # Respect configuration-specific C flags. 351 CFLAGS+= ${CONF_CFLAGS} 352 353 MFILES?= dev/acpica/acpi_if.m dev/acpi_support/acpi_wmi_if.m \ 354 dev/agp/agp_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \ 355 dev/fb/fb_if.m dev/gpio/gpio_if.m dev/gpio/gpiobus_if.m \ 356 dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \ 357 dev/mmc/mmcbr_if.m dev/mmc/mmcbus_if.m \ 358 dev/mii/miibus_if.m dev/mvs/mvs_if.m dev/ofw/ofw_bus_if.m \ 359 dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \ 360 dev/pci/pcib_if.m dev/ppbus/ppbus_if.m \ 361 dev/sdhci/sdhci_if.m dev/smbus/smbus_if.m dev/spibus/spibus_if.m \ 362 dev/sound/pci/hda/hdac_if.m \ 363 dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \ 364 dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m \ 365 dev/sound/midi/mpu_if.m dev/sound/midi/mpufoi_if.m \ 366 dev/sound/midi/synth_if.m dev/usb/usb_if.m isa/isa_if.m \ 367 kern/bus_if.m kern/clock_if.m \ 368 kern/cpufreq_if.m kern/device_if.m kern/serdev_if.m \ 369 libkern/iconv_converter_if.m opencrypto/cryptodev_if.m \ 370 pc98/pc98/canbus_if.m dev/etherswitch/mdio_if.m 371 372 .for _srcsrc in ${MFILES} 373 .for _ext in c h 374 .for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}} 375 CLEANFILES+= ${_src} 376 .if !target(${_src}) 377 .if !exists(@) 378 ${_src}: @ 379 .else 380 ${_src}: @/tools/makeobjops.awk @/${_srcsrc} 381 .endif 382 ${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext} 383 .endif 384 .endfor # _src 385 .endfor # _ext 386 .endfor # _srcsrc 387 388 .if !empty(SRCS:Mvnode_if.c) 389 CLEANFILES+= vnode_if.c 390 .if !exists(@) 391 vnode_if.c: @ 392 .else 393 vnode_if.c: @/tools/vnode_if.awk @/kern/vnode_if.src 394 .endif 395 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -c 396 .endif 397 398 .if !empty(SRCS:Mvnode_if.h) 399 CLEANFILES+= vnode_if.h vnode_if_newproto.h vnode_if_typedef.h 400 .if !exists(@) 401 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @ 402 .else 403 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @/tools/vnode_if.awk \ 404 @/kern/vnode_if.src 405 .endif 406 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h 407 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -h 408 vnode_if_newproto.h: 409 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -p 410 vnode_if_typedef.h: 411 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -q 412 .endif 413 414 .for _i in mii pccard 415 .if !empty(SRCS:M${_i}devs.h) 416 CLEANFILES+= ${_i}devs.h 417 .if !exists(@) 418 ${_i}devs.h: @ 419 .else 420 ${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs 421 .endif 422 ${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs 423 .endif 424 .endfor # _i 425 426 .if !empty(SRCS:Musbdevs.h) 427 CLEANFILES+= usbdevs.h 428 .if !exists(@) 429 usbdevs.h: @ 430 .else 431 usbdevs.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs 432 .endif 433 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -h 434 .endif 435 436 .if !empty(SRCS:Musbdevs_data.h) 437 CLEANFILES+= usbdevs_data.h 438 .if !exists(@) 439 usbdevs_data.h: @ 440 .else 441 usbdevs_data.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs 442 .endif 443 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -d 444 .endif 445 446 .if !empty(SRCS:Macpi_quirks.h) 447 CLEANFILES+= acpi_quirks.h 448 .if !exists(@) 449 acpi_quirks.h: @ 450 .else 451 acpi_quirks.h: @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks 452 .endif 453 ${AWK} -f @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks 454 .endif 455 456 .if !empty(SRCS:Massym.s) 457 CLEANFILES+= assym.s genassym.o 458 assym.s: genassym.o 459 .if defined(KERNBUILDDIR) 460 genassym.o: opt_global.h 461 .endif 462 .if !exists(@) 463 assym.s: @ 464 .else 465 assym.s: @/kern/genassym.sh 466 .endif 467 sh @/kern/genassym.sh genassym.o > ${.TARGET} 468 .if exists(@) 469 genassym.o: @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c 470 .endif 471 genassym.o: @ machine ${SRCS:Mopt_*.h} 472 ${CC} -c ${CFLAGS:N-fno-common} \ 473 @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c 474 .endif 475 476 lint: ${SRCS} 477 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c} 478 479 .if defined(KERNBUILDDIR) 480 ${OBJS}: opt_global.h 481 .endif 482 483 .include <bsd.dep.mk> 484 485 cleandepend: cleanilinks 486 # .depend needs include links so we remove them only together. 487 cleanilinks: 488 rm -f ${_ILINKS} 489 490 .if !exists(${.OBJDIR}/${DEPENDFILE}) 491 ${OBJS}: ${SRCS:M*.h} 492 .endif 493 494 .include <bsd.obj.mk> 495 .include "kern.mk"
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