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/6.1/sys/conf/kmod.mk 158179 2006-04-30 16:44:43Z cvs2svn $ 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 # DESTDIR The tree where the module gets installed. [not set] 42 # 43 # +++ targets +++ 44 # 45 # install: 46 # install the kernel module; if the Makefile 47 # does not itself define the target install, the targets 48 # beforeinstall and afterinstall may also be used to cause 49 # actions immediately before and after the install target 50 # is executed. 51 # 52 # load: 53 # Load a module. 54 # 55 # unload: 56 # Unload a module. 57 # 58 59 AWK?= awk 60 KMODLOAD?= /sbin/kldload 61 KMODUNLOAD?= /sbin/kldunload 62 OBJCOPY?= objcopy 63 64 .if defined(KMODDEPS) 65 .error "Do not use KMODDEPS on 5.0+; use MODULE_VERSION/MODULE_DEPEND" 66 .endif 67 68 .include <bsd.init.mk> 69 70 .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S 71 72 .if ${CC} == "icc" 73 CFLAGS:= ${CFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/} 74 .else 75 . if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing) 76 CFLAGS+= -fno-strict-aliasing 77 . endif 78 WERROR?= -Werror 79 .endif 80 CFLAGS+= ${WERROR} 81 CFLAGS+= -D_KERNEL 82 CFLAGS+= -DKLD_MODULE 83 84 # Don't use any standard or source-relative include directories. 85 .if ${CC} == "icc" 86 NOSTDINC= -X 87 .else 88 NOSTDINC= -nostdinc 89 .endif 90 CFLAGS:= ${CFLAGS:N-I*} ${NOSTDINC} -I- ${INCLMAGIC} ${CFLAGS:M-I*} 91 .if defined(KERNBUILDDIR) 92 CFLAGS+= -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h 93 .endif 94 95 # Add -I paths for system headers. Individual module makefiles don't 96 # need any -I paths for this. Similar defaults for .PATH can't be 97 # set because there are no standard paths for non-headers. 98 CFLAGS+= -I. -I@ 99 100 # Add -I path for altq headers as they are included via net/if_var.h 101 # for example. 102 CFLAGS+= -I@/contrib/altq 103 104 # Add a -I path to standard headers like <stddef.h>. Use a relative 105 # path to src/include if possible. If the @ symlink hasn't been built 106 # yet, then we can't tell if the relative path exists. Add both the 107 # potential relative path and an absolute path in that case. 108 .if exists(@) 109 .if exists(@/../include) 110 CFLAGS+= -I@/../include 111 .else 112 CFLAGS+= -I${DESTDIR}/usr/include 113 .endif 114 .else # !@ 115 CFLAGS+= -I@/../include -I${DESTDIR}/usr/include 116 .endif # @ 117 118 .if ${CC} != "icc" 119 CFLAGS+= -finline-limit=${INLINE_LIMIT} 120 .endif 121 122 # Disallow common variables, and if we end up with commons from 123 # somewhere unexpected, allocate storage for them in the module itself. 124 .if ${CC} != "icc" 125 CFLAGS+= -fno-common 126 .endif 127 LDFLAGS+= -d -warn-common 128 129 CFLAGS+= ${DEBUG_FLAGS} 130 .if ${MACHINE_ARCH} == amd64 131 CFLAGS+= -fno-omit-frame-pointer 132 .endif 133 134 .if ${MACHINE_ARCH} == "powerpc" 135 CFLAGS+= -mlongcall -fno-omit-frame-pointer 136 .endif 137 138 .if defined(FIRMWS) 139 .if !exists(@) 140 ${KMOD:S/$/.c/}: @ 141 .else 142 ${KMOD:S/$/.c/}: @/tools/fw_stub.awk 143 .endif 144 ${AWK} -f @/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} 145 146 SRCS+= ${KMOD:S/$/.c/} 147 CLEANFILES+= ${KMOD:S/$/.c/} 148 149 .for _firmw in ${FIRMWS} 150 ${_firmw:C/\:.*$/.fwo/}: ${_firmw:C/\:.*$//} 151 @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}} 152 @if [ -e ${_firmw:C/\:.*$//} ]; then \ 153 ${LD} -b binary ${LDFLAGS} -r -d -o ${.TARGET} \ 154 ${_firmw:C/\:.*$//}; \ 155 else \ 156 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \ 157 ${LD} -b binary ${LDFLAGS} -r -d -o ${.TARGET} \ 158 ${_firmw:C/\:.*$//}; \ 159 rm ${_firmw:C/\:.*$//}; \ 160 fi 161 162 OBJS+= ${_firmw:C/\:.*$/.fwo/} 163 .endfor 164 .endif 165 166 OBJS+= ${SRCS:N*.h:R:S/$/.o/g} 167 168 .if !defined(PROG) 169 PROG= ${KMOD}.ko 170 .endif 171 172 .if !defined(DEBUG_FLAGS) 173 FULLPROG= ${PROG} 174 .else 175 FULLPROG= ${PROG}.debug 176 ${PROG}: ${FULLPROG} 177 ${OBJCOPY} --strip-debug ${FULLPROG} ${PROG} 178 .endif 179 180 .if ${MACHINE_ARCH} != amd64 181 ${FULLPROG}: ${KMOD}.kld 182 ${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld 183 .if !defined(DEBUG_FLAGS) 184 ${OBJCOPY} --strip-debug ${.TARGET} 185 .endif 186 .endif 187 188 EXPORT_SYMS?= NO 189 .if ${EXPORT_SYMS} != YES 190 CLEANFILES+= export_syms 191 .endif 192 193 .if ${MACHINE_ARCH} != amd64 194 ${KMOD}.kld: ${OBJS} 195 .else 196 ${FULLPROG}: ${OBJS} 197 .endif 198 ${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS} 199 .if defined(EXPORT_SYMS) 200 .if ${EXPORT_SYMS} != YES 201 .if ${EXPORT_SYMS} == NO 202 touch export_syms 203 .elif !exists(${.CURDIR}/${EXPORT_SYMS}) 204 echo ${EXPORT_SYMS} > export_syms 205 .else 206 grep -v '^#' < ${EXPORT_SYMS} > export_syms 207 .endif 208 awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \ 209 export_syms | xargs -J% ${OBJCOPY} % ${.TARGET} 210 .endif 211 .endif 212 .if !defined(DEBUG_FLAGS) && ${MACHINE_ARCH} == amd64 213 ${OBJCOPY} --strip-debug ${.TARGET} 214 .endif 215 216 _ILINKS=@ machine 217 .if ${MACHINE} != ${MACHINE_ARCH} 218 _ILINKS+=${MACHINE_ARCH} 219 .endif 220 221 all: objwarn ${PROG} 222 223 beforedepend: ${_ILINKS} 224 225 # Ensure that the links exist without depending on it when it exists which 226 # causes all the modules to be rebuilt when the directory pointed to changes. 227 .for _link in ${_ILINKS} 228 .if !exists(${.OBJDIR}/${_link}) 229 ${OBJS}: ${_link} 230 .endif 231 .endfor 232 233 # Search for kernel source tree in standard places. 234 .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys 235 .if !defined(SYSDIR) && exists(${_dir}/kern/) 236 SYSDIR= ${_dir} 237 .endif 238 .endfor 239 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) 240 .error "can't find kernel source tree" 241 .endif 242 243 ${_ILINKS}: 244 @case ${.TARGET} in \ 245 ${MACHINE_ARCH}) \ 246 path=${SYSDIR}/${MACHINE_ARCH}/include ;; \ 247 machine) \ 248 path=${SYSDIR}/${MACHINE}/include ;; \ 249 @) \ 250 path=${SYSDIR} ;; \ 251 esac ; \ 252 path=`(cd $$path && /bin/pwd)` ; \ 253 ${ECHO} ${.TARGET} "->" $$path ; \ 254 ln -s $$path ${.TARGET} 255 256 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} 257 258 .if defined(DEBUG_FLAGS) 259 CLEANFILES+= ${FULLPROG} 260 .endif 261 262 .if !target(install) 263 264 _INSTALLFLAGS:= ${INSTALLFLAGS} 265 .for ie in ${INSTALLFLAGS_EDIT} 266 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}} 267 .endfor 268 269 .if !target(install.debug) && defined(DEBUG_FLAGS) 270 install.debug: 271 cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install 272 .endif 273 274 .if !target(realinstall) 275 realinstall: _kmodinstall 276 .ORDER: beforeinstall _kmodinstall 277 _kmodinstall: 278 .if defined(DEBUG_FLAGS) && defined(INSTALL_DEBUG) 279 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 280 ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR} 281 .else 282 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 283 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR} 284 285 .include <bsd.links.mk> 286 287 .if !defined(NO_XREF) 288 afterinstall: _kldxref 289 .ORDER: realinstall _kldxref 290 .ORDER: _installlinks _kldxref 291 _kldxref: 292 @if type kldxref >/dev/null 2>&1; then \ 293 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \ 294 kldxref ${DESTDIR}${KMODDIR}; \ 295 fi 296 .endif 297 .endif 298 .endif # !target(realinstall) 299 300 .endif # !target(install) 301 302 .if !target(load) 303 load: ${PROG} 304 ${KMODLOAD} -v ${.OBJDIR}/${PROG} 305 .endif 306 307 .if !target(unload) 308 unload: 309 ${KMODUNLOAD} -v ${PROG} 310 .endif 311 312 .if defined(KERNBUILDDIR) 313 .PATH: ${KERNBUILDDIR} 314 CFLAGS+= -I${KERNBUILDDIR} 315 .for _src in ${SRCS:Mopt_*.h} 316 CLEANFILES+= ${_src} 317 .if !target(${_src}) 318 ${_src}: 319 ln -s ${KERNBUILDDIR}/${_src} ${.TARGET} 320 .endif 321 .endfor 322 .else 323 .for _src in ${SRCS:Mopt_*.h} 324 CLEANFILES+= ${_src} 325 .if !target(${_src}) 326 ${_src}: 327 touch ${.TARGET} 328 .endif 329 .endfor 330 .endif 331 332 MFILES?= dev/acpica/acpi_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \ 333 dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \ 334 dev/mii/miibus_if.m dev/ofw/ofw_bus_if.m \ 335 dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \ 336 dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \ 337 dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \ 338 dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m dev/uart/uart_if.m \ 339 dev/usb/usb_if.m isa/isa_if.m \ 340 kern/bus_if.m kern/cpufreq_if.m kern/device_if.m \ 341 libkern/iconv_converter_if.m opencrypto/crypto_if.m \ 342 pc98/pc98/canbus_if.m pci/agp_if.m 343 344 .for _srcsrc in ${MFILES} 345 .for _ext in c h 346 .for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}} 347 CLEANFILES+= ${_src} 348 .if !target(${_src}) 349 .if !exists(@) 350 ${_src}: @ 351 .else 352 ${_src}: @/tools/makeobjops.awk @/${_srcsrc} 353 .endif 354 ${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext} 355 .endif 356 .endfor # _src 357 .endfor # _ext 358 .endfor # _srcsrc 359 360 .if ${SRCS:Mvnode_if.c} != "" 361 CLEANFILES+= vnode_if.c 362 .if !exists(@) 363 vnode_if.c: @ 364 .else 365 vnode_if.c: @/tools/vnode_if.awk @/kern/vnode_if.src 366 .endif 367 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -c 368 .endif 369 370 .if ${SRCS:Mvnode_if.h} != "" 371 CLEANFILES+= vnode_if.h vnode_if_newproto.h vnode_if_typedef.h 372 .if !exists(@) 373 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @ 374 .else 375 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @/tools/vnode_if.awk \ 376 @/kern/vnode_if.src 377 .endif 378 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h 379 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -h 380 vnode_if_newproto.h: 381 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -p 382 vnode_if_typedef.h: 383 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -q 384 .endif 385 386 .for _i in mii pccard 387 .if ${SRCS:M${_i}devs.h} != "" 388 CLEANFILES+= ${_i}devs.h 389 .if !exists(@) 390 ${_i}devs.h: @ 391 .else 392 ${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs 393 .endif 394 ${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs 395 .endif 396 .endfor # _i 397 398 .if ${SRCS:Musbdevs.h} != "" 399 CLEANFILES+= usbdevs.h 400 .if !exists(@) 401 usbdevs.h: @ 402 .else 403 usbdevs.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs 404 .endif 405 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -h 406 .endif 407 408 .if ${SRCS:Musbdevs_data.h} != "" 409 CLEANFILES+= usbdevs_data.h 410 .if !exists(@) 411 usbdevs_data.h: @ 412 .else 413 usbdevs_data.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs 414 .endif 415 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -d 416 .endif 417 418 .if ${SRCS:Macpi_quirks.h} != "" 419 CLEANFILES+= acpi_quirks.h 420 .if !exists(@) 421 acpi_quirks.h: @ 422 .else 423 acpi_quirks.h: @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks 424 .endif 425 ${AWK} -f @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks 426 .endif 427 428 .if ${SRCS:Massym.s} != "" 429 CLEANFILES+= assym.s genassym.o 430 assym.s: genassym.o 431 .if !exists(@) 432 assym.s: @ 433 .else 434 assym.s: @/kern/genassym.sh 435 .endif 436 sh @/kern/genassym.sh genassym.o > ${.TARGET} 437 .if exists(@) 438 genassym.o: @/${MACHINE_ARCH}/${MACHINE_ARCH}/genassym.c 439 .endif 440 genassym.o: @ machine ${SRCS:Mopt_*.h} 441 ${CC} -c ${CFLAGS:N-fno-common} \ 442 @/${MACHINE_ARCH}/${MACHINE_ARCH}/genassym.c 443 .endif 444 445 lint: ${SRCS} 446 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c} 447 448 .include <bsd.dep.mk> 449 450 .if !exists(${.OBJDIR}/${DEPENDFILE}) 451 ${OBJS}: ${SRCS:M*.h} 452 .endif 453 454 .include <bsd.obj.mk> 455 .include "kern.mk"
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