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/10.0/sys/conf/kmod.mk 253072 2013-07-09 08:42:02Z avg $ 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 .if ${MACHINE_CPUARCH} == powerpc 129 CFLAGS+= -mlongcall -fno-omit-frame-pointer 130 .endif 131 132 .if ${MACHINE_CPUARCH} == mips 133 CFLAGS+= -G0 -fno-pic -mno-abicalls -mlong-calls 134 .endif 135 136 .if defined(DEBUG) || defined(DEBUG_FLAGS) 137 CTFFLAGS+= -g 138 .endif 139 140 .if defined(FIRMWS) 141 .if !exists(@) 142 ${KMOD:S/$/.c/}: @ 143 .else 144 ${KMOD:S/$/.c/}: @/tools/fw_stub.awk 145 .endif 146 ${AWK} -f @/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \ 147 ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE} 148 149 SRCS+= ${KMOD:S/$/.c/} 150 CLEANFILES+= ${KMOD:S/$/.c/} 151 152 .for _firmw in ${FIRMWS} 153 ${_firmw:C/\:.*$/.fwo/}: ${_firmw:C/\:.*$//} 154 @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}} 155 @if [ -e ${_firmw:C/\:.*$//} ]; then \ 156 ${LD} -b binary --no-warn-mismatch ${LDFLAGS} \ 157 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \ 158 else \ 159 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \ 160 ${LD} -b binary --no-warn-mismatch ${LDFLAGS} \ 161 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \ 162 rm ${_firmw:C/\:.*$//}; \ 163 fi 164 165 OBJS+= ${_firmw:C/\:.*$/.fwo/} 166 .endfor 167 .endif 168 169 OBJS+= ${SRCS:N*.h:R:S/$/.o/g} 170 171 .if !defined(PROG) 172 PROG= ${KMOD}.ko 173 .endif 174 175 .if !defined(DEBUG_FLAGS) 176 FULLPROG= ${PROG} 177 .else 178 FULLPROG= ${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 193 194 EXPORT_SYMS?= NO 195 .if ${EXPORT_SYMS} != YES 196 CLEANFILES+= 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 defined(MK_CTF) && ${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 232 233 all: objwarn ${PROG} 234 235 beforedepend: ${_ILINKS} 236 237 # Ensure that the links exist without depending on it when it exists which 238 # causes all the modules to be rebuilt when the directory pointed to changes. 239 .for _link in ${_ILINKS} 240 .if !exists(${.OBJDIR}/${_link}) 241 ${OBJS}: ${_link} 242 .endif 243 .endfor 244 245 # Search for kernel source tree in standard places. 246 .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys 247 .if !defined(SYSDIR) && exists(${_dir}/kern/) 248 SYSDIR= ${_dir} 249 .endif 250 .endfor 251 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) 252 .error "can't find kernel source tree" 253 .endif 254 255 ${_ILINKS}: 256 @case ${.TARGET} in \ 257 machine) \ 258 path=${SYSDIR}/${MACHINE}/include ;; \ 259 @) \ 260 path=${SYSDIR} ;; \ 261 *) \ 262 path=${SYSDIR}/${.TARGET}/include ;; \ 263 esac ; \ 264 path=`(cd $$path && /bin/pwd)` ; \ 265 ${ECHO} ${.TARGET} "->" $$path ; \ 266 ln -sf $$path ${.TARGET} 267 268 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} 269 270 .if defined(DEBUG_FLAGS) 271 CLEANFILES+= ${FULLPROG} ${PROG}.symbols 272 .endif 273 274 .if !target(install) 275 276 _INSTALLFLAGS:= ${INSTALLFLAGS} 277 .for ie in ${INSTALLFLAGS_EDIT} 278 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}} 279 .endfor 280 281 .if !target(realinstall) 282 realinstall: _kmodinstall 283 .ORDER: beforeinstall _kmodinstall 284 _kmodinstall: 285 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 286 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR} 287 .if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no" 288 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 289 ${_INSTALLFLAGS} ${PROG}.symbols ${DESTDIR}${KMODDIR} 290 .endif 291 292 .include <bsd.links.mk> 293 294 .if !defined(NO_XREF) 295 afterinstall: _kldxref 296 .ORDER: realinstall _kldxref 297 .ORDER: _installlinks _kldxref 298 _kldxref: 299 @if type kldxref >/dev/null 2>&1; then \ 300 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \ 301 kldxref ${DESTDIR}${KMODDIR}; \ 302 fi 303 .endif 304 .endif # !target(realinstall) 305 306 .endif # !target(install) 307 308 .if !target(load) 309 load: ${PROG} 310 ${KMODLOAD} -v ${.OBJDIR}/${PROG} 311 .endif 312 313 .if !target(unload) 314 unload: 315 ${KMODUNLOAD} -v ${PROG} 316 .endif 317 318 .if defined(KERNBUILDDIR) 319 .PATH: ${KERNBUILDDIR} 320 CFLAGS+= -I${KERNBUILDDIR} 321 .for _src in ${SRCS:Mopt_*.h} 322 CLEANFILES+= ${_src} 323 .if !target(${_src}) 324 ${_src}: 325 ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET} 326 .endif 327 .endfor 328 .else 329 .for _src in ${SRCS:Mopt_*.h} 330 CLEANFILES+= ${_src} 331 .if !target(${_src}) 332 ${_src}: 333 :> ${.TARGET} 334 .endif 335 .endfor 336 .endif 337 338 # Respect configuration-specific C flags. 339 CFLAGS+= ${CONF_CFLAGS} 340 341 MFILES?= dev/acpica/acpi_if.m dev/acpi_support/acpi_wmi_if.m \ 342 dev/agp/agp_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \ 343 dev/gpio/gpio_if.m dev/gpio/gpiobus_if.m \ 344 dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \ 345 dev/mmc/mmcbr_if.m dev/mmc/mmcbus_if.m \ 346 dev/mii/miibus_if.m dev/mvs/mvs_if.m dev/ofw/ofw_bus_if.m \ 347 dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \ 348 dev/pci/pcib_if.m dev/ppbus/ppbus_if.m \ 349 dev/sdhci/sdhci_if.m dev/smbus/smbus_if.m \ 350 dev/sound/pci/hda/hdac_if.m \ 351 dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \ 352 dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m \ 353 dev/sound/midi/mpu_if.m dev/sound/midi/mpufoi_if.m \ 354 dev/sound/midi/synth_if.m dev/usb/usb_if.m isa/isa_if.m \ 355 kern/bus_if.m kern/clock_if.m \ 356 kern/cpufreq_if.m kern/device_if.m kern/serdev_if.m \ 357 libkern/iconv_converter_if.m opencrypto/cryptodev_if.m \ 358 pc98/pc98/canbus_if.m dev/etherswitch/mdio_if.m 359 360 .for _srcsrc in ${MFILES} 361 .for _ext in c h 362 .for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}} 363 CLEANFILES+= ${_src} 364 .if !target(${_src}) 365 .if !exists(@) 366 ${_src}: @ 367 .else 368 ${_src}: @/tools/makeobjops.awk @/${_srcsrc} 369 .endif 370 ${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext} 371 .endif 372 .endfor # _src 373 .endfor # _ext 374 .endfor # _srcsrc 375 376 .if !empty(SRCS:Mvnode_if.c) 377 CLEANFILES+= vnode_if.c 378 .if !exists(@) 379 vnode_if.c: @ 380 .else 381 vnode_if.c: @/tools/vnode_if.awk @/kern/vnode_if.src 382 .endif 383 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -c 384 .endif 385 386 .if !empty(SRCS:Mvnode_if.h) 387 CLEANFILES+= vnode_if.h vnode_if_newproto.h vnode_if_typedef.h 388 .if !exists(@) 389 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @ 390 .else 391 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @/tools/vnode_if.awk \ 392 @/kern/vnode_if.src 393 .endif 394 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h 395 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -h 396 vnode_if_newproto.h: 397 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -p 398 vnode_if_typedef.h: 399 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -q 400 .endif 401 402 .for _i in mii pccard 403 .if !empty(SRCS:M${_i}devs.h) 404 CLEANFILES+= ${_i}devs.h 405 .if !exists(@) 406 ${_i}devs.h: @ 407 .else 408 ${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs 409 .endif 410 ${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs 411 .endif 412 .endfor # _i 413 414 .if !empty(SRCS:Musbdevs.h) 415 CLEANFILES+= usbdevs.h 416 .if !exists(@) 417 usbdevs.h: @ 418 .else 419 usbdevs.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs 420 .endif 421 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -h 422 .endif 423 424 .if !empty(SRCS:Musbdevs_data.h) 425 CLEANFILES+= usbdevs_data.h 426 .if !exists(@) 427 usbdevs_data.h: @ 428 .else 429 usbdevs_data.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs 430 .endif 431 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -d 432 .endif 433 434 .if !empty(SRCS:Macpi_quirks.h) 435 CLEANFILES+= acpi_quirks.h 436 .if !exists(@) 437 acpi_quirks.h: @ 438 .else 439 acpi_quirks.h: @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks 440 .endif 441 ${AWK} -f @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks 442 .endif 443 444 .if !empty(SRCS:Massym.s) 445 CLEANFILES+= assym.s genassym.o 446 assym.s: genassym.o 447 .if defined(KERNBUILDDIR) 448 genassym.o: opt_global.h 449 .endif 450 .if !exists(@) 451 assym.s: @ 452 .else 453 assym.s: @/kern/genassym.sh 454 .endif 455 sh @/kern/genassym.sh genassym.o > ${.TARGET} 456 .if exists(@) 457 genassym.o: @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c 458 .endif 459 genassym.o: @ machine ${SRCS:Mopt_*.h} 460 ${CC} -c ${CFLAGS:N-fno-common} \ 461 @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c 462 .endif 463 464 lint: ${SRCS} 465 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c} 466 467 .if defined(KERNBUILDDIR) 468 ${OBJS}: opt_global.h 469 .endif 470 471 .include <bsd.dep.mk> 472 473 cleandepend: cleanilinks 474 # .depend needs include links so we remove them only together. 475 cleanilinks: 476 rm -f ${_ILINKS} 477 478 .if !exists(${.OBJDIR}/${DEPENDFILE}) 479 ${OBJS}: ${SRCS:M*.h} 480 .endif 481 482 .include <bsd.obj.mk> 483 .include "kern.mk"
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