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: releng/6.0/sys/conf/kmod.mk 151060 2005-10-07 13:55:58Z glebius $ 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 # DESTDIR The tree where the module gets installed. [not set] 40 # 41 # +++ targets +++ 42 # 43 # install: 44 # install the kernel module; if the Makefile 45 # does not itself define the target install, the targets 46 # beforeinstall and afterinstall may also be used to cause 47 # actions immediately before and after the install target 48 # is executed. 49 # 50 # load: 51 # Load a module. 52 # 53 # unload: 54 # Unload a module. 55 # 56 57 AWK?= awk 58 KMODLOAD?= /sbin/kldload 59 KMODUNLOAD?= /sbin/kldunload 60 OBJCOPY?= objcopy 61 62 .if defined(KMODDEPS) 63 .error "Do not use KMODDEPS on 5.0+; use MODULE_VERSION/MODULE_DEPEND" 64 .endif 65 66 .include <bsd.init.mk> 67 68 .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S 69 70 .if ${CC} == "icc" 71 CFLAGS:= ${CFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/} 72 .else 73 . if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing) 74 CFLAGS+= -fno-strict-aliasing 75 . endif 76 WERROR?= -Werror 77 .endif 78 CFLAGS+= ${WERROR} 79 CFLAGS+= -D_KERNEL 80 CFLAGS+= -DKLD_MODULE 81 82 # Don't use any standard or source-relative include directories. 83 # Since -nostdinc will annull any previous -I paths, we repeat all 84 # such paths after -nostdinc. It doesn't seem to be possible to 85 # add to the front of `make' variable. 86 _ICFLAGS:= ${CFLAGS:M-I*} 87 .if ${CC} == "icc" 88 NOSTDINC= -X 89 .else 90 NOSTDINC= -nostdinc 91 .endif 92 CFLAGS+= ${NOSTDINC} -I- ${INCLMAGIC} ${_ICFLAGS} 93 .if defined(KERNBUILDDIR) 94 CFLAGS+= -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h 95 .endif 96 97 # Add -I paths for system headers. Individual module makefiles don't 98 # need any -I paths for this. Similar defaults for .PATH can't be 99 # set because there are no standard paths for non-headers. 100 CFLAGS+= -I. -I@ 101 102 # Add -I path for altq headers as they are included via net/if_var.h 103 # for example. 104 CFLAGS+= -I@/contrib/altq 105 106 # Add a -I path to standard headers like <stddef.h>. Use a relative 107 # path to src/include if possible. If the @ symlink hasn't been built 108 # yet, then we can't tell if the relative path exists. Add both the 109 # potential relative path and an absolute path in that case. 110 .if exists(@) 111 .if exists(@/../include) 112 CFLAGS+= -I@/../include 113 .else 114 CFLAGS+= -I${DESTDIR}/usr/include 115 .endif 116 .else # !@ 117 CFLAGS+= -I@/../include -I${DESTDIR}/usr/include 118 .endif # @ 119 120 .if ${CC} != "icc" 121 CFLAGS+= -finline-limit=${INLINE_LIMIT} 122 .endif 123 124 # Disallow common variables, and if we end up with commons from 125 # somewhere unexpected, allocate storage for them in the module itself. 126 .if ${CC} != "icc" 127 CFLAGS+= -fno-common 128 .endif 129 LDFLAGS+= -d -warn-common 130 131 CFLAGS+= ${DEBUG_FLAGS} 132 .if ${MACHINE_ARCH} == amd64 133 CFLAGS+= -fno-omit-frame-pointer 134 .endif 135 136 .if ${MACHINE_ARCH} == "powerpc" 137 CFLAGS+= -mlongcall -fno-omit-frame-pointer 138 .endif 139 140 OBJS+= ${SRCS:N*.h:R:S/$/.o/g} 141 142 .if !defined(PROG) 143 PROG= ${KMOD}.ko 144 .endif 145 146 .if !defined(DEBUG_FLAGS) 147 FULLPROG= ${PROG} 148 .else 149 FULLPROG= ${PROG}.debug 150 ${PROG}: ${FULLPROG} 151 ${OBJCOPY} --strip-debug ${FULLPROG} ${PROG} 152 .endif 153 154 .if ${MACHINE_ARCH} != amd64 155 ${FULLPROG}: ${KMOD}.kld 156 ${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld 157 .if !defined(DEBUG_FLAGS) 158 ${OBJCOPY} --strip-debug ${.TARGET} 159 .endif 160 .endif 161 162 EXPORT_SYMS?= NO 163 .if ${EXPORT_SYMS} != YES 164 CLEANFILES+= export_syms 165 .endif 166 167 .if ${MACHINE_ARCH} != amd64 168 ${KMOD}.kld: ${OBJS} 169 .else 170 ${FULLPROG}: ${OBJS} 171 .endif 172 ${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS} 173 .if defined(EXPORT_SYMS) 174 .if ${EXPORT_SYMS} != YES 175 .if ${EXPORT_SYMS} == NO 176 touch export_syms 177 .elif !exists(${.CURDIR}/${EXPORT_SYMS}) 178 echo ${EXPORT_SYMS} > export_syms 179 .else 180 grep -v '^#' < ${EXPORT_SYMS} > export_syms 181 .endif 182 awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \ 183 export_syms | xargs -J% ${OBJCOPY} % ${.TARGET} 184 .endif 185 .endif 186 .if !defined(DEBUG_FLAGS) && ${MACHINE_ARCH} == amd64 187 ${OBJCOPY} --strip-debug ${.TARGET} 188 .endif 189 190 _ILINKS=@ machine 191 .if ${MACHINE} != ${MACHINE_ARCH} 192 _ILINKS+=${MACHINE_ARCH} 193 .endif 194 195 all: objwarn ${PROG} 196 197 beforedepend: ${_ILINKS} 198 199 # Ensure that the links exist without depending on it when it exists which 200 # causes all the modules to be rebuilt when the directory pointed to changes. 201 .for _link in ${_ILINKS} 202 .if !exists(${.OBJDIR}/${_link}) 203 ${OBJS}: ${_link} 204 .endif 205 .endfor 206 207 # Search for kernel source tree in standard places. 208 .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys 209 .if !defined(SYSDIR) && exists(${_dir}/kern/) 210 SYSDIR= ${_dir} 211 .endif 212 .endfor 213 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) 214 .error "can't find kernel source tree" 215 .endif 216 217 ${_ILINKS}: 218 @case ${.TARGET} in \ 219 ${MACHINE_ARCH}) \ 220 path=${SYSDIR}/${MACHINE_ARCH}/include ;; \ 221 machine) \ 222 path=${SYSDIR}/${MACHINE}/include ;; \ 223 @) \ 224 path=${SYSDIR} ;; \ 225 esac ; \ 226 path=`(cd $$path && /bin/pwd)` ; \ 227 ${ECHO} ${.TARGET} "->" $$path ; \ 228 ln -s $$path ${.TARGET} 229 230 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} 231 232 .if defined(DEBUG_FLAGS) 233 CLEANFILES+= ${FULLPROG} 234 .endif 235 236 .if !target(install) 237 238 _INSTALLFLAGS:= ${INSTALLFLAGS} 239 .for ie in ${INSTALLFLAGS_EDIT} 240 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}} 241 .endfor 242 243 .if !target(install.debug) && defined(DEBUG_FLAGS) 244 install.debug: 245 cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install 246 .endif 247 248 .if !target(realinstall) 249 realinstall: _kmodinstall 250 .ORDER: beforeinstall _kmodinstall 251 _kmodinstall: 252 .if defined(DEBUG_FLAGS) && defined(INSTALL_DEBUG) 253 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 254 ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR} 255 .else 256 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 257 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR} 258 259 .include <bsd.links.mk> 260 261 .if !defined(NO_XREF) 262 afterinstall: _kldxref 263 .ORDER: realinstall _kldxref 264 .ORDER: _installlinks _kldxref 265 _kldxref: 266 @if type kldxref >/dev/null 2>&1; then \ 267 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \ 268 kldxref ${DESTDIR}${KMODDIR}; \ 269 fi 270 .endif 271 .endif 272 .endif # !target(realinstall) 273 274 .endif # !target(install) 275 276 .if !target(load) 277 load: ${PROG} 278 ${KMODLOAD} -v ${.OBJDIR}/${PROG} 279 .endif 280 281 .if !target(unload) 282 unload: 283 ${KMODUNLOAD} -v ${PROG} 284 .endif 285 286 .if defined(KERNBUILDDIR) 287 .PATH: ${KERNBUILDDIR} 288 CFLAGS+= -I${KERNBUILDDIR} 289 .for _src in ${SRCS:Mopt_*.h} 290 CLEANFILES+= ${_src} 291 .if !target(${_src}) 292 ${_src}: 293 ln -s ${KERNBUILDDIR}/${_src} ${.TARGET} 294 .endif 295 .endfor 296 .else 297 .for _src in ${SRCS:Mopt_*.h} 298 CLEANFILES+= ${_src} 299 .if !target(${_src}) 300 ${_src}: 301 touch ${.TARGET} 302 .endif 303 .endfor 304 .endif 305 306 MFILES?= dev/acpica/acpi_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \ 307 dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \ 308 dev/mii/miibus_if.m dev/ofw/ofw_bus_if.m \ 309 dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \ 310 dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \ 311 dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \ 312 dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m dev/uart/uart_if.m \ 313 dev/usb/usb_if.m isa/isa_if.m \ 314 kern/bus_if.m kern/cpufreq_if.m kern/device_if.m \ 315 libkern/iconv_converter_if.m opencrypto/crypto_if.m \ 316 pc98/pc98/canbus_if.m pci/agp_if.m 317 318 .for _srcsrc in ${MFILES} 319 .for _ext in c h 320 .for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}} 321 CLEANFILES+= ${_src} 322 .if !target(${_src}) 323 .if !exists(@) 324 ${_src}: @ 325 .else 326 ${_src}: @/tools/makeobjops.awk @/${_srcsrc} 327 .endif 328 ${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext} 329 .endif 330 .endfor # _src 331 .endfor # _ext 332 .endfor # _srcsrc 333 334 .if ${SRCS:Mvnode_if.c} != "" 335 CLEANFILES+= vnode_if.c 336 .if !exists(@) 337 vnode_if.c: @ 338 .else 339 vnode_if.c: @/tools/vnode_if.awk @/kern/vnode_if.src 340 .endif 341 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -c 342 .endif 343 344 .if ${SRCS:Mvnode_if.h} != "" 345 CLEANFILES+= vnode_if.h vnode_if_newproto.h vnode_if_typedef.h 346 .if !exists(@) 347 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @ 348 .else 349 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @/tools/vnode_if.awk \ 350 @/kern/vnode_if.src 351 .endif 352 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h 353 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -h 354 vnode_if_newproto.h: 355 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -p 356 vnode_if_typedef.h: 357 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -q 358 .endif 359 360 .for _i in mii pccard 361 .if ${SRCS:M${_i}devs.h} != "" 362 CLEANFILES+= ${_i}devs.h 363 .if !exists(@) 364 ${_i}devs.h: @ 365 .else 366 ${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs 367 .endif 368 ${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs 369 .endif 370 .endfor # _i 371 372 .if ${SRCS:Musbdevs.h} != "" 373 CLEANFILES+= usbdevs.h 374 .if !exists(@) 375 usbdevs.h: @ 376 .else 377 usbdevs.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs 378 .endif 379 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -h 380 .endif 381 382 .if ${SRCS:Musbdevs_data.h} != "" 383 CLEANFILES+= usbdevs_data.h 384 .if !exists(@) 385 usbdevs_data.h: @ 386 .else 387 usbdevs_data.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs 388 .endif 389 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -d 390 .endif 391 392 .if ${SRCS:Macpi_quirks.h} != "" 393 CLEANFILES+= acpi_quirks.h 394 .if !exists(@) 395 acpi_quirks.h: @ 396 .else 397 acpi_quirks.h: @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks 398 .endif 399 ${AWK} -f @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks 400 .endif 401 402 .if ${SRCS:Massym.s} != "" 403 CLEANFILES+= assym.s genassym.o 404 assym.s: genassym.o 405 .if !exists(@) 406 assym.s: @ 407 .else 408 assym.s: @/kern/genassym.sh 409 .endif 410 sh @/kern/genassym.sh genassym.o > ${.TARGET} 411 genassym.o: @/${MACHINE_ARCH}/${MACHINE_ARCH}/genassym.c @ machine 412 ${CC} -c ${CFLAGS:N-fno-common} \ 413 @/${MACHINE_ARCH}/${MACHINE_ARCH}/genassym.c 414 .endif 415 416 lint: ${SRCS} 417 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c} 418 419 .include <bsd.dep.mk> 420 421 .if !exists(${.OBJDIR}/${DEPENDFILE}) 422 ${OBJS}: ${SRCS:M*.h} 423 .endif 424 425 .include <bsd.obj.mk> 426 .include "kern.mk"
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