sys/conf/kmod.mk

   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 # KMODISLOADED  Command to check whether a kernel module is
  32 #               loaded [/sbin/kldstat -q -n]
  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 # KERNBUILDDIR
  48 #               Set to the location of the kernel build directory where
  49 #               the opt_*.h files, .o's and kernel winds up.
  50 #
  51 # +++ targets +++
  52 #
  53 #       install:
  54 #               install the kernel module; if the Makefile
  55 #               does not itself define the target install, the targets
  56 #               beforeinstall and afterinstall may also be used to cause
  57 #               actions immediately before and after the install target
  58 #               is executed.
  59 #
  60 #       load:
  61 #               Load a module.
  62 #
  63 #       unload:
  64 #               Unload a module.
  65 #
  66 #       reload:
  67 #               Unload if loaded, then load.
  68 #
  69
  70 AWK?=           awk
  71 KMODLOAD?=      /sbin/kldload
  72 KMODUNLOAD?=    /sbin/kldunload
  73 KMODISLOADED?=  /sbin/kldstat -q -n
  74 OBJCOPY?=       objcopy
  75
  76 .include <bsd.init.mk>
  77 # Grab all the options for a kernel build. For backwards compat, we need to
  78 # do this after bsd.own.mk.
  79 .include "kern.opts.mk"
  80 .include <bsd.compiler.mk>
  81 .include "config.mk"
  82
  83 # Search for kernel source tree in standard places.
  84 .if empty(KERNBUILDDIR)
  85 .if !defined(SYSDIR)
  86 .for _dir in ${SRCTOP:D${SRCTOP}/sys} \
  87     ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
  88 .if !defined(SYSDIR) && exists(${_dir}/kern/)
  89 SYSDIR= ${_dir:tA}
  90 .endif
  91 .endfor
  92 .endif
  93 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
  94 .error "can't find kernel source tree"
  95 .endif
  96 .endif
  97
  98 .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S .m
  99
 100 # amd64 and mips use direct linking for kmod, all others use shared binaries
 101 .if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips
 102 __KLD_SHARED=yes
 103 .else
 104 __KLD_SHARED=no
 105 .endif
 106
 107 .if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
 108 CFLAGS+=        -fno-strict-aliasing
 109 .endif
 110 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} < 50000
 111 WERROR?=        -Wno-error
 112 .else
 113 WERROR?=        -Werror
 114 .endif
 115
 116 CFLAGS+=        ${WERROR}
 117 CFLAGS+=        -D_KERNEL
 118 CFLAGS+=        -DKLD_MODULE
 119 .if defined(MODULE_TIED)
 120 CFLAGS+=        -DKLD_TIED
 121 .endif
 122
 123 # Don't use any standard or source-relative include directories.
 124 NOSTDINC=       -nostdinc
 125 CFLAGS:=        ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*}
 126 .if defined(KERNBUILDDIR)
 127 CFLAGS+=        -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h
 128 .endif
 129
 130 # Add -I paths for system headers.  Individual module makefiles don't
 131 # need any -I paths for this.  Similar defaults for .PATH can't be
 132 # set because there are no standard paths for non-headers.
 133 CFLAGS+=        -I. -I${SYSDIR} -I${SYSDIR}/contrib/ck/include
 134
 135 CFLAGS.gcc+=    -finline-limit=${INLINE_LIMIT}
 136 CFLAGS.gcc+=    -fms-extensions
 137 CFLAGS.gcc+= --param inline-unit-growth=100
 138 CFLAGS.gcc+= --param large-function-growth=1000
 139
 140 # Disallow common variables, and if we end up with commons from
 141 # somewhere unexpected, allocate storage for them in the module itself.
 142 CFLAGS+=        -fno-common
 143 LDFLAGS+=       -d -warn-common
 144
 145 .if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id}
 146 LDFLAGS+=       --build-id=sha1
 147 .endif
 148
 149 CFLAGS+=        ${DEBUG_FLAGS}
 150 .if ${MACHINE_CPUARCH} == amd64
 151 CFLAGS+=        -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
 152 .endif
 153
 154 .if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "riscv"
 155 CFLAGS+=        -fPIC
 156 .endif
 157
 158 # Temporary workaround for PR 196407, which contains the fascinating details.
 159 # Don't allow clang to use fpu instructions or registers in kernel modules.
 160 .if ${MACHINE_CPUARCH} == arm
 161 .if ${COMPILER_VERSION} < 30800
 162 CFLAGS.clang+=  -mllvm -arm-use-movt=0
 163 .else
 164 CFLAGS.clang+=  -mno-movt
 165 .endif
 166 CFLAGS.clang+=  -mfpu=none
 167 CFLAGS+=        -funwind-tables
 168 .endif
 169
 170 .if ${MACHINE_CPUARCH} == powerpc
 171 CFLAGS+=        -mlongcall -fno-omit-frame-pointer
 172 .endif
 173
 174 .if ${MACHINE_CPUARCH} == mips
 175 CFLAGS+=        -G0 -fno-pic -mno-abicalls -mlong-calls
 176 .endif
 177
 178 .if defined(DEBUG) || defined(DEBUG_FLAGS)
 179 CTFFLAGS+=      -g
 180 .endif
 181
 182 .if defined(FIRMWS)
 183 ${KMOD:S/$/.c/}: ${SYSDIR}/tools/fw_stub.awk
 184         ${AWK} -f ${SYSDIR}/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \
 185             ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE}
 186
 187 SRCS+=  ${KMOD:S/$/.c/}
 188 CLEANFILES+=    ${KMOD:S/$/.c/}
 189
 190 .for _firmw in ${FIRMWS}
 191 ${_firmw:C/\:.*$/.fwo/:T}:      ${_firmw:C/\:.*$//}
 192         @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}}
 193         @if [ -e ${_firmw:C/\:.*$//} ]; then                    \
 194                 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS}  \
 195                     -m ${LD_EMULATION} -r -d                    \
 196                     -o ${.TARGET} ${_firmw:C/\:.*$//};          \
 197         else                                                    \
 198                 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \
 199                 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS}  \
 200                     -m ${LD_EMULATION} -r -d                    \
 201                     -o ${.TARGET} ${_firmw:C/\:.*$//};          \
 202                 rm ${_firmw:C/\:.*$//};                         \
 203         fi
 204
 205 OBJS+=  ${_firmw:C/\:.*$/.fwo/:T}
 206 .endfor
 207 .endif
 208
 209 # Conditionally include SRCS based on kernel config options.
 210 .for _o in ${KERN_OPTS}
 211 SRCS+=${SRCS.${_o}}
 212 .endfor
 213
 214 OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
 215
 216 .if !defined(PROG)
 217 PROG=   ${KMOD}.ko
 218 .endif
 219
 220 .if !defined(DEBUG_FLAGS)
 221 FULLPROG=       ${PROG}
 222 .else
 223 FULLPROG=       ${PROG}.full
 224 ${PROG}: ${FULLPROG} ${PROG}.debug
 225         ${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.debug \
 226             ${FULLPROG} ${.TARGET}
 227 ${PROG}.debug: ${FULLPROG}
 228         ${OBJCOPY} --only-keep-debug ${FULLPROG} ${.TARGET}
 229 .endif
 230
 231 .if ${__KLD_SHARED} == yes
 232 ${FULLPROG}: ${KMOD}.kld
 233         ${LD} -m ${LD_EMULATION} -Bshareable -znotext ${_LDFLAGS} \
 234             -o ${.TARGET} ${KMOD}.kld
 235 .if !defined(DEBUG_FLAGS)
 236         ${OBJCOPY} --strip-debug ${.TARGET}
 237 .endif
 238 .endif
 239
 240 EXPORT_SYMS?=   NO
 241 .if ${EXPORT_SYMS} != YES
 242 CLEANFILES+=    export_syms
 243 .endif
 244
 245 .if ${__KLD_SHARED} == yes
 246 ${KMOD}.kld: ${OBJS}
 247 .else
 248 ${FULLPROG}: ${OBJS}
 249 .endif
 250         ${LD} -m ${LD_EMULATION} ${_LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
 251 .if ${MK_CTF} != "no"
 252         ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS}
 253 .endif
 254 .if defined(EXPORT_SYMS)
 255 .if ${EXPORT_SYMS} != YES
 256 .if ${EXPORT_SYMS} == NO
 257         :> export_syms
 258 .elif !exists(${.CURDIR}/${EXPORT_SYMS})
 259         echo -n "${EXPORT_SYMS:@s@$s${.newline}@}" > export_syms
 260 .else
 261         grep -v '^#' < ${EXPORT_SYMS} > export_syms
 262 .endif
 263         ${AWK} -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
 264             export_syms | xargs -J% ${OBJCOPY} % ${.TARGET}
 265 .endif
 266 .endif # defined(EXPORT_SYMS)
 267 .if defined(PREFIX_SYMS)
 268         ${AWK} -v prefix=${PREFIX_SYMS} -f ${SYSDIR}/conf/kmod_syms_prefix.awk \
 269             ${.TARGET} /dev/null | xargs -J% ${OBJCOPY} % ${.TARGET}
 270 .endif
 271 .if !defined(DEBUG_FLAGS) && ${__KLD_SHARED} == no
 272         ${OBJCOPY} --strip-debug ${.TARGET}
 273 .endif
 274
 275 .if ${COMPILER_TYPE} == "clang" || \
 276     (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 60000)
 277 _MAP_DEBUG_PREFIX= yes
 278 .endif
 279
 280 _ILINKS=machine
 281 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
 282 _ILINKS+=${MACHINE_CPUARCH}
 283 .endif
 284 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
 285 _ILINKS+=x86
 286 .endif
 287 CLEANFILES+=${_ILINKS}
 288
 289 all: ${PROG}
 290
 291 beforedepend: ${_ILINKS}
 292 beforebuild: ${_ILINKS}
 293
 294 # Ensure that the links exist without depending on it when it exists which
 295 # causes all the modules to be rebuilt when the directory pointed to changes.
 296 # Ensure that debug info references the path in the source tree.
 297 .for _link in ${_ILINKS}
 298 .if !exists(${.OBJDIR}/${_link})
 299 OBJS_DEPEND_GUESS+=     ${_link}
 300 .endif
 301 .if defined(_MAP_DEBUG_PREFIX)
 302 .if ${_link} == "machine"
 303 CFLAGS+= -fdebug-prefix-map=./machine=${SYSDIR}/${MACHINE}/include
 304 .else
 305 CFLAGS+= -fdebug-prefix-map=./${_link}=${SYSDIR}/${_link}/include
 306 .endif
 307 .endif
 308 .endfor
 309
 310 .NOPATH: ${_ILINKS}
 311
 312 ${_ILINKS}:
 313         @case ${.TARGET} in \
 314         machine) \
 315                 path=${SYSDIR}/${MACHINE}/include ;; \
 316         *) \
 317                 path=${SYSDIR}/${.TARGET:T}/include ;; \
 318         esac ; \
 319         path=`(cd $$path && /bin/pwd)` ; \
 320         ${ECHO} ${.TARGET:T} "->" $$path ; \
 321         ln -fns $$path ${.TARGET:T}
 322
 323 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS}
 324
 325 .if defined(DEBUG_FLAGS)
 326 CLEANFILES+= ${FULLPROG} ${PROG}.debug
 327 .endif
 328
 329 .if !target(install)
 330
 331 _INSTALLFLAGS:= ${INSTALLFLAGS}
 332 .for ie in ${INSTALLFLAGS_EDIT}
 333 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
 334 .endfor
 335
 336 .if !target(realinstall)
 337 KERN_DEBUGDIR?= ${DEBUGDIR}
 338 realinstall: _kmodinstall
 339 .ORDER: beforeinstall _kmodinstall
 340 _kmodinstall: .PHONY
 341         ${INSTALL} -T release -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
 342             ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}/
 343 .if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
 344         ${INSTALL} -T debug -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
 345             ${_INSTALLFLAGS} ${PROG}.debug ${DESTDIR}${KERN_DEBUGDIR}${KMODDIR}/
 346 .endif
 347
 348 .include <bsd.links.mk>
 349
 350 .if !defined(NO_XREF)
 351 afterinstall: _kldxref
 352 .ORDER: realinstall _kldxref
 353 .ORDER: _installlinks _kldxref
 354 _kldxref: .PHONY
 355         @if type kldxref >/dev/null 2>&1; then \
 356                 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
 357                 kldxref ${DESTDIR}${KMODDIR}; \
 358         fi
 359 .endif
 360 .endif # !target(realinstall)
 361
 362 .endif # !target(install)
 363
 364 .if !target(load)
 365 load: ${PROG} .PHONY
 366         ${KMODLOAD} -v ${.OBJDIR}/${PROG}
 367 .endif
 368
 369 .if !target(unload)
 370 unload: .PHONY
 371         if ${KMODISLOADED} ${PROG} ; then ${KMODUNLOAD} -v ${PROG} ; fi
 372 .endif
 373
 374 .if !target(reload)
 375 reload: unload load .PHONY
 376 .endif
 377
 378 .if defined(KERNBUILDDIR)
 379 .PATH: ${KERNBUILDDIR}
 380 CFLAGS+=        -I${KERNBUILDDIR}
 381 .for _src in ${SRCS:Mopt_*.h}
 382 CLEANFILES+=    ${_src}
 383 .if !target(${_src})
 384 ${_src}:
 385         ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET}
 386 .endif
 387 .endfor
 388 .else
 389 .for _src in ${SRCS:Mopt_*.h}
 390 CLEANFILES+=    ${_src}
 391 .if !target(${_src})
 392 ${_src}:
 393         :> ${.TARGET}
 394 .endif
 395 .endfor
 396 .endif
 397
 398 # Respect configuration-specific C flags.
 399 CFLAGS+=        ${ARCH_FLAGS} ${CONF_CFLAGS}
 400
 401 .if !empty(SRCS:Mvnode_if.c)
 402 CLEANFILES+=    vnode_if.c
 403 vnode_if.c: ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src
 404         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -c
 405 .endif
 406
 407 .if !empty(SRCS:Mvnode_if.h)
 408 CLEANFILES+=    vnode_if.h vnode_if_newproto.h vnode_if_typedef.h
 409 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: ${SYSDIR}/tools/vnode_if.awk \
 410     ${SYSDIR}/kern/vnode_if.src
 411 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
 412         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -h
 413 vnode_if_newproto.h:
 414         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -p
 415 vnode_if_typedef.h:
 416         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -q
 417 .endif
 418
 419 # Build _if.[ch] from _if.m, and clean them when we're done.
 420 # __MPATH defined in config.mk
 421 _MFILES=${__MPATH:T:O}
 422 _MPATH=${__MPATH:H:O:u}
 423 .PATH.m: ${_MPATH}
 424 .for _i in ${SRCS:M*_if.[ch]}
 425 _MATCH=M${_i:R:S/$/.m/}
 426 _MATCHES=${_MFILES:${_MATCH}}
 427 .if !empty(_MATCHES)
 428 CLEANFILES+=    ${_i}
 429 .endif
 430 .endfor # _i
 431 .m.c:   ${SYSDIR}/tools/makeobjops.awk
 432         ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${.IMPSRC} -c
 433
 434 .m.h:   ${SYSDIR}/tools/makeobjops.awk
 435         ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${.IMPSRC} -h
 436
 437 .for _i in mii pccard
 438 .if !empty(SRCS:M${_i}devs.h)
 439 CLEANFILES+=    ${_i}devs.h
 440 ${_i}devs.h: ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs
 441         ${AWK} -f ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs
 442 .endif
 443 .endfor # _i
 444
 445 .if !empty(SRCS:Mbhnd_nvram_map.h)
 446 CLEANFILES+=    bhnd_nvram_map.h
 447 bhnd_nvram_map.h: ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.awk \
 448     ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.sh \
 449     ${SYSDIR}/dev/bhnd/nvram/nvram_map
 450 bhnd_nvram_map.h:
 451         sh ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.sh \
 452             ${SYSDIR}/dev/bhnd/nvram/nvram_map -h
 453 .endif
 454
 455 .if !empty(SRCS:Mbhnd_nvram_map_data.h)
 456 CLEANFILES+=    bhnd_nvram_map_data.h
 457 bhnd_nvram_map_data.h: ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.awk \
 458     ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.sh \
 459     ${SYSDIR}/dev/bhnd/nvram/nvram_map
 460 bhnd_nvram_map_data.h:
 461         sh ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.sh \
 462             ${SYSDIR}/dev/bhnd/nvram/nvram_map -d
 463 .endif
 464
 465 .if !empty(SRCS:Musbdevs.h)
 466 CLEANFILES+=    usbdevs.h
 467 usbdevs.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs
 468         ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -h
 469 .endif
 470
 471 .if !empty(SRCS:Musbdevs_data.h)
 472 CLEANFILES+=    usbdevs_data.h
 473 usbdevs_data.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs
 474         ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -d
 475 .endif
 476
 477 .if !empty(SRCS:Macpi_quirks.h)
 478 CLEANFILES+=    acpi_quirks.h
 479 acpi_quirks.h: ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks
 480         ${AWK} -f ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks
 481 .endif
 482
 483 .if !empty(SRCS:Massym.inc) || !empty(DPSRCS:Massym.inc)
 484 CLEANFILES+=    assym.inc genassym.o
 485 DEPENDOBJS+=    genassym.o
 486 DPSRCS+=        offset.inc
 487 .endif
 488 .if defined(MODULE_TIED)
 489 DPSRCS+=        offset.inc
 490 .endif
 491 .if !empty(SRCS:Moffset.inc) || !empty(DPSRCS:Moffset.inc)
 492 CLEANFILES+=    offset.inc genoffset.o
 493 DEPENDOBJS+=    genoffset.o
 494 .endif
 495 assym.inc: genassym.o
 496 offset.inc: genoffset.o
 497 assym.inc: ${SYSDIR}/kern/genassym.sh
 498         sh ${SYSDIR}/kern/genassym.sh genassym.o > ${.TARGET}
 499 genassym.o: ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c offset.inc
 500 genassym.o: ${SRCS:Mopt_*.h}
 501         ${CC} -c ${CFLAGS:N-flto:N-fno-common} \
 502             ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c
 503 offset.inc: ${SYSDIR}/kern/genoffset.sh genoffset.o
 504         sh ${SYSDIR}/kern/genoffset.sh genoffset.o > ${.TARGET}
 505 genoffset.o: ${SYSDIR}/kern/genoffset.c
 506 genoffset.o: ${SRCS:Mopt_*.h}
 507         ${CC} -c ${CFLAGS:N-flto:N-fno-common} \
 508             ${SYSDIR}/kern/genoffset.c
 509
 510 CLEANDEPENDFILES+=      ${_ILINKS}
 511 # .depend needs include links so we remove them only together.
 512 cleanilinks:
 513         rm -f ${_ILINKS}
 514
 515 OBJS_DEPEND_GUESS+= ${SRCS:M*.h}
 516 .if defined(KERNBUILDDIR)
 517 OBJS_DEPEND_GUESS+= opt_global.h
 518 .endif
 519
 520 .include <bsd.dep.mk>
 521 .include <bsd.clang-analyze.mk>
 522 .include <bsd.obj.mk>
 523 .include "kern.mk"