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 "kmod.opts.mk"
  77 .include <bsd.sysdir.mk>
  78
  79 .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S .m
  80
  81 # amd64 and mips use direct linking for kmod, all others use shared binaries
  82 .if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips
  83 __KLD_SHARED=yes
  84 .else
  85 __KLD_SHARED=no
  86 .endif
  87
  88 .if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
  89 CFLAGS+=        -fno-strict-aliasing
  90 .endif
  91 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} < 50000
  92 WERROR?=        -Wno-error
  93 .else
  94 WERROR?=        -Werror
  95 .endif
  96
  97 CFLAGS+=        ${WERROR}
  98 CFLAGS+=        -D_KERNEL
  99 CFLAGS+=        -DKLD_MODULE
 100 .if defined(MODULE_TIED)
 101 CFLAGS+=        -DKLD_TIED
 102 .endif
 103
 104 # Don't use any standard or source-relative include directories.
 105 NOSTDINC=       -nostdinc
 106 CFLAGS:=        ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*}
 107 .if defined(KERNBUILDDIR)
 108 CFLAGS+=        -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h
 109 .else
 110 SRCS+=          opt_global.h
 111 CFLAGS+=        -include ${.OBJDIR}/opt_global.h
 112 .endif
 113
 114 # Add -I paths for system headers.  Individual module makefiles don't
 115 # need any -I paths for this.  Similar defaults for .PATH can't be
 116 # set because there are no standard paths for non-headers.
 117 CFLAGS+=        -I. -I${SYSDIR} -I${SYSDIR}/contrib/ck/include
 118
 119 CFLAGS.gcc+=    -finline-limit=${INLINE_LIMIT}
 120 CFLAGS.gcc+=    -fms-extensions
 121 CFLAGS.gcc+= --param inline-unit-growth=100
 122 CFLAGS.gcc+= --param large-function-growth=1000
 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 CFLAGS+=        -fno-common
 127 LDFLAGS+=       -d -warn-common
 128
 129 .if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id}
 130 LDFLAGS+=       --build-id=sha1
 131 .endif
 132
 133 CFLAGS+=        ${DEBUG_FLAGS}
 134 .if ${MACHINE_CPUARCH} == amd64
 135 CFLAGS+=        -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
 136 .endif
 137
 138 .if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "riscv" || \
 139     ${MACHINE_CPUARCH} == "powerpc"
 140 CFLAGS+=        -fPIC
 141 .endif
 142
 143 # Temporary workaround for PR 196407, which contains the fascinating details.
 144 # Don't allow clang to use fpu instructions or registers in kernel modules.
 145 .if ${MACHINE_CPUARCH} == arm
 146 .if ${COMPILER_VERSION} < 30800
 147 CFLAGS.clang+=  -mllvm -arm-use-movt=0
 148 .else
 149 CFLAGS.clang+=  -mno-movt
 150 .endif
 151 CFLAGS.clang+=  -mfpu=none
 152 CFLAGS+=        -funwind-tables
 153 .endif
 154
 155 .if ${MACHINE_CPUARCH} == powerpc
 156 CFLAGS+=        -mlongcall -fno-omit-frame-pointer
 157 .if ${LINKER_TYPE} == "lld"
 158 # TOC optimization in LLD (9.0) currently breaks kernel modules, so disable it
 159 LDFLAGS+=       --no-toc-optimize
 160 .endif
 161 .endif
 162
 163 .if ${MACHINE_CPUARCH} == mips
 164 CFLAGS+=        -G0 -fno-pic -mno-abicalls -mlong-calls
 165 .endif
 166
 167 .if defined(DEBUG) || defined(DEBUG_FLAGS)
 168 CTFFLAGS+=      -g
 169 .endif
 170
 171 .if defined(FIRMWS)
 172 ${KMOD:S/$/.c/}: ${SYSDIR}/tools/fw_stub.awk
 173         ${AWK} -f ${SYSDIR}/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \
 174             ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE}
 175
 176 SRCS+=  ${KMOD:S/$/.c/}
 177 CLEANFILES+=    ${KMOD:S/$/.c/}
 178
 179 .for _firmw in ${FIRMWS}
 180 ${_firmw:C/\:.*$/.fwo/:T}:      ${_firmw:C/\:.*$//}
 181         @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}}
 182         @if [ -e ${_firmw:C/\:.*$//} ]; then                    \
 183                 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS}  \
 184                     -m ${LD_EMULATION} -r -d                    \
 185                     -o ${.TARGET} ${_firmw:C/\:.*$//};          \
 186         else                                                    \
 187                 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \
 188                 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS}  \
 189                     -m ${LD_EMULATION} -r -d                    \
 190                     -o ${.TARGET} ${_firmw:C/\:.*$//};          \
 191                 rm ${_firmw:C/\:.*$//};                         \
 192         fi
 193
 194 OBJS+=  ${_firmw:C/\:.*$/.fwo/:T}
 195 .endfor
 196 .endif
 197
 198 # Conditionally include SRCS based on kernel config options.
 199 .for _o in ${KERN_OPTS}
 200 SRCS+=${SRCS.${_o}}
 201 .endfor
 202
 203 OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
 204
 205 .if !defined(PROG)
 206 PROG=   ${KMOD}.ko
 207 .endif
 208
 209 .if !defined(DEBUG_FLAGS)
 210 FULLPROG=       ${PROG}
 211 .else
 212 FULLPROG=       ${PROG}.full
 213 ${PROG}: ${FULLPROG} ${PROG}.debug
 214         ${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.debug \
 215             ${FULLPROG} ${.TARGET}
 216 ${PROG}.debug: ${FULLPROG}
 217         ${OBJCOPY} --only-keep-debug ${FULLPROG} ${.TARGET}
 218 .endif
 219
 220 .if ${__KLD_SHARED} == yes
 221 ${FULLPROG}: ${KMOD}.kld
 222         ${LD} -m ${LD_EMULATION} -Bshareable -znotext -znorelro ${_LDFLAGS} \
 223             -o ${.TARGET} ${KMOD}.kld
 224 .if !defined(DEBUG_FLAGS)
 225         ${OBJCOPY} --strip-debug ${.TARGET}
 226 .endif
 227 .endif
 228
 229 EXPORT_SYMS?=   NO
 230 .if ${EXPORT_SYMS} != YES
 231 CLEANFILES+=    export_syms
 232 .endif
 233
 234 .if exists(${SYSDIR}/conf/ldscript.kmod.${MACHINE_ARCH})
 235 LDSCRIPT_FLAGS?= -T ${SYSDIR}/conf/ldscript.kmod.${MACHINE_ARCH}
 236 .endif
 237
 238 .if ${__KLD_SHARED} == yes
 239 ${KMOD}.kld: ${OBJS}
 240 .else
 241 ${FULLPROG}: ${OBJS}
 242 .endif
 243         ${LD} -m ${LD_EMULATION} ${_LDFLAGS} ${LDSCRIPT_FLAGS} -r -d \
 244             -o ${.TARGET} ${OBJS}
 245 .if ${MK_CTF} != "no"
 246         ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS}
 247 .endif
 248 .if defined(EXPORT_SYMS)
 249 .if ${EXPORT_SYMS} != YES
 250 .if ${EXPORT_SYMS} == NO
 251         :> export_syms
 252 .elif !exists(${.CURDIR}/${EXPORT_SYMS})
 253         echo -n "${EXPORT_SYMS:@s@$s${.newline}@}" > export_syms
 254 .else
 255         grep -v '^#' < ${EXPORT_SYMS} > export_syms
 256 .endif
 257         ${AWK} -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
 258             export_syms | xargs -J% ${OBJCOPY} % ${.TARGET}
 259 .endif
 260 .endif # defined(EXPORT_SYMS)
 261 .if defined(PREFIX_SYMS)
 262         ${AWK} -v prefix=${PREFIX_SYMS} -f ${SYSDIR}/conf/kmod_syms_prefix.awk \
 263             ${.TARGET} /dev/null | xargs -J% ${OBJCOPY} % ${.TARGET}
 264 .endif
 265 .if !defined(DEBUG_FLAGS) && ${__KLD_SHARED} == no
 266         ${OBJCOPY} --strip-debug ${.TARGET}
 267 .endif
 268
 269 .if ${COMPILER_TYPE} == "clang" || \
 270     (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 60000)
 271 _MAP_DEBUG_PREFIX= yes
 272 .endif
 273
 274 _ILINKS=machine
 275 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
 276 _ILINKS+=x86
 277 .endif
 278 CLEANFILES+=${_ILINKS}
 279
 280 all: ${PROG}
 281
 282 beforedepend: ${_ILINKS}
 283 beforebuild: ${_ILINKS}
 284
 285 # Ensure that the links exist without depending on it when it exists which
 286 # causes all the modules to be rebuilt when the directory pointed to changes.
 287 # Ensure that debug info references the path in the source tree.
 288 .for _link in ${_ILINKS}
 289 .if !exists(${.OBJDIR}/${_link})
 290 OBJS_DEPEND_GUESS+=     ${_link}
 291 .endif
 292 .if defined(_MAP_DEBUG_PREFIX)
 293 .if ${_link} == "machine"
 294 CFLAGS+= -fdebug-prefix-map=./machine=${SYSDIR}/${MACHINE}/include
 295 .else
 296 CFLAGS+= -fdebug-prefix-map=./${_link}=${SYSDIR}/${_link}/include
 297 .endif
 298 .endif
 299 .endfor
 300
 301 .NOPATH: ${_ILINKS}
 302
 303 ${_ILINKS}:
 304         @case ${.TARGET} in \
 305         machine) \
 306                 path=${SYSDIR}/${MACHINE}/include ;; \
 307         *) \
 308                 path=${SYSDIR}/${.TARGET:T}/include ;; \
 309         esac ; \
 310         path=`(cd $$path && /bin/pwd)` ; \
 311         ${ECHO} ${.TARGET:T} "->" $$path ; \
 312         ln -fns $$path ${.TARGET:T}
 313
 314 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS}
 315
 316 .if defined(DEBUG_FLAGS)
 317 CLEANFILES+= ${FULLPROG} ${PROG}.debug
 318 .endif
 319
 320 .if !target(install)
 321
 322 _INSTALLFLAGS:= ${INSTALLFLAGS}
 323 .for ie in ${INSTALLFLAGS_EDIT}
 324 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
 325 .endfor
 326
 327 .if !target(realinstall)
 328 KERN_DEBUGDIR?= ${DEBUGDIR}
 329 realinstall: _kmodinstall
 330 .ORDER: beforeinstall _kmodinstall
 331 _kmodinstall: .PHONY
 332         ${INSTALL} -T release -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
 333             ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}/
 334 .if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
 335         ${INSTALL} -T debug -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
 336             ${_INSTALLFLAGS} ${PROG}.debug ${DESTDIR}${KERN_DEBUGDIR}${KMODDIR}/
 337 .endif
 338
 339 .include <bsd.links.mk>
 340
 341 .if !defined(NO_XREF)
 342 afterinstall: _kldxref
 343 .ORDER: realinstall _kldxref
 344 .ORDER: _installlinks _kldxref
 345 _kldxref: .PHONY
 346         @if type kldxref >/dev/null 2>&1; then \
 347                 ${ECHO} ${KLDXREF_CMD} ${DESTDIR}${KMODDIR}; \
 348                 ${KLDXREF_CMD} ${DESTDIR}${KMODDIR}; \
 349         fi
 350 .endif
 351 .endif # !target(realinstall)
 352
 353 .endif # !target(install)
 354
 355 .if !target(load)
 356 load: ${PROG} .PHONY
 357         ${KMODLOAD} -v ${.OBJDIR}/${PROG}
 358 .endif
 359
 360 .if !target(unload)
 361 unload: .PHONY
 362         if ${KMODISLOADED} ${PROG} ; then ${KMODUNLOAD} -v ${PROG} ; fi
 363 .endif
 364
 365 .if !target(reload)
 366 reload: unload load .PHONY
 367 .endif
 368
 369 .if defined(KERNBUILDDIR)
 370 .PATH: ${KERNBUILDDIR}
 371 CFLAGS+=        -I${KERNBUILDDIR}
 372 .for _src in ${SRCS:Mopt_*.h}
 373 CLEANFILES+=    ${_src}
 374 .if !target(${_src})
 375 ${_src}:
 376         ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET}
 377 .endif
 378 .endfor
 379 .else
 380 .for _src in ${SRCS:Mopt_*.h}
 381 CLEANFILES+=    ${_src}
 382 .if !target(${_src})
 383 ${_src}:
 384         :> ${.TARGET}
 385 .endif
 386 .endfor
 387 .endif
 388
 389 # Add the sanitizer C flags
 390 CFLAGS+=        ${SAN_CFLAGS}
 391
 392 # Add the gcov flags
 393 CFLAGS+=        ${GCOV_CFLAGS}
 394
 395 # Respect configuration-specific C flags.
 396 CFLAGS+=        ${ARCH_FLAGS} ${CONF_CFLAGS}
 397
 398 .if !empty(SRCS:Mvnode_if.c)
 399 CLEANFILES+=    vnode_if.c
 400 vnode_if.c: ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src
 401         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -c
 402 .endif
 403
 404 .if !empty(SRCS:Mvnode_if.h)
 405 CLEANFILES+=    vnode_if.h vnode_if_newproto.h vnode_if_typedef.h
 406 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: ${SYSDIR}/tools/vnode_if.awk \
 407     ${SYSDIR}/kern/vnode_if.src
 408 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
 409         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -h
 410 vnode_if_newproto.h:
 411         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -p
 412 vnode_if_typedef.h:
 413         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -q
 414 .endif
 415
 416 # Build _if.[ch] from _if.m, and clean them when we're done.
 417 # __MPATH defined in config.mk
 418 _MFILES=${__MPATH:T:O}
 419 _MPATH=${__MPATH:H:O:u}
 420 .PATH.m: ${_MPATH}
 421 .for _i in ${SRCS:M*_if.[ch]}
 422 _MATCH=M${_i:R:S/$/.m/}
 423 _MATCHES=${_MFILES:${_MATCH}}
 424 .if !empty(_MATCHES)
 425 CLEANFILES+=    ${_i}
 426 .endif
 427 .endfor # _i
 428 .m.c:   ${SYSDIR}/tools/makeobjops.awk
 429         ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${.IMPSRC} -c
 430
 431 .m.h:   ${SYSDIR}/tools/makeobjops.awk
 432         ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${.IMPSRC} -h
 433
 434 .for _i in mii pccard
 435 .if !empty(SRCS:M${_i}devs.h)
 436 CLEANFILES+=    ${_i}devs.h
 437 ${_i}devs.h: ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs
 438         ${AWK} -f ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs
 439 .endif
 440 .endfor # _i
 441
 442 .if !empty(SRCS:Mbhnd_nvram_map.h)
 443 CLEANFILES+=    bhnd_nvram_map.h
 444 bhnd_nvram_map.h: ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.awk \
 445     ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.sh \
 446     ${SYSDIR}/dev/bhnd/nvram/nvram_map
 447 bhnd_nvram_map.h:
 448         sh ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.sh \
 449             ${SYSDIR}/dev/bhnd/nvram/nvram_map -h
 450 .endif
 451
 452 .if !empty(SRCS:Mbhnd_nvram_map_data.h)
 453 CLEANFILES+=    bhnd_nvram_map_data.h
 454 bhnd_nvram_map_data.h: ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.awk \
 455     ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.sh \
 456     ${SYSDIR}/dev/bhnd/nvram/nvram_map
 457 bhnd_nvram_map_data.h:
 458         sh ${SYSDIR}/dev/bhnd/tools/nvram_map_gen.sh \
 459             ${SYSDIR}/dev/bhnd/nvram/nvram_map -d
 460 .endif
 461
 462 .if !empty(SRCS:Musbdevs.h)
 463 CLEANFILES+=    usbdevs.h
 464 usbdevs.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs
 465         ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -h
 466 .endif
 467
 468 .if !empty(SRCS:Musbdevs_data.h)
 469 CLEANFILES+=    usbdevs_data.h
 470 usbdevs_data.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs
 471         ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -d
 472 .endif
 473
 474 .if !empty(SRCS:Msdiodevs.h)
 475 CLEANFILES+=    sdiodevs.h
 476 sdiodevs.h: ${SYSDIR}/tools/sdiodevs2h.awk ${SYSDIR}/dev/sdio/sdiodevs
 477         ${AWK} -f ${SYSDIR}/tools/sdiodevs2h.awk ${SYSDIR}/dev/sdio/sdiodevs -h
 478 .endif
 479
 480 .if !empty(SRCS:Msdiodevs_data.h)
 481 CLEANFILES+=    sdiodevs_data.h
 482 sdiodevs_data.h: ${SYSDIR}/tools/sdiodevs2h.awk ${SYSDIR}/dev/sdio/sdiodevs
 483         ${AWK} -f ${SYSDIR}/tools/sdiodevs2h.awk ${SYSDIR}/dev/sdio/sdiodevs -d
 484 .endif
 485
 486 .if !empty(SRCS:Macpi_quirks.h)
 487 CLEANFILES+=    acpi_quirks.h
 488 acpi_quirks.h: ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks
 489         ${AWK} -f ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks
 490 .endif
 491
 492 .if !empty(SRCS:Massym.inc) || !empty(DPSRCS:Massym.inc)
 493 CLEANFILES+=    assym.inc genassym.o
 494 DEPENDOBJS+=    genassym.o
 495 DPSRCS+=        offset.inc
 496 .endif
 497 .if defined(MODULE_TIED)
 498 DPSRCS+=        offset.inc
 499 .endif
 500 .if !empty(SRCS:Moffset.inc) || !empty(DPSRCS:Moffset.inc)
 501 CLEANFILES+=    offset.inc genoffset.o
 502 DEPENDOBJS+=    genoffset.o
 503 .endif
 504 assym.inc: genassym.o
 505 offset.inc: genoffset.o
 506 assym.inc: ${SYSDIR}/kern/genassym.sh
 507         sh ${SYSDIR}/kern/genassym.sh genassym.o > ${.TARGET}
 508 genassym.o: ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c offset.inc
 509 genassym.o: ${SRCS:Mopt_*.h}
 510         ${CC} -c ${CFLAGS:N-flto:N-fno-common} \
 511             ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c
 512 offset.inc: ${SYSDIR}/kern/genoffset.sh genoffset.o
 513         sh ${SYSDIR}/kern/genoffset.sh genoffset.o > ${.TARGET}
 514 genoffset.o: ${SYSDIR}/kern/genoffset.c
 515 genoffset.o: ${SRCS:Mopt_*.h}
 516         ${CC} -c ${CFLAGS:N-flto:N-fno-common} \
 517             ${SYSDIR}/kern/genoffset.c
 518
 519 CLEANDEPENDFILES+=      ${_ILINKS}
 520 # .depend needs include links so we remove them only together.
 521 cleanilinks:
 522         rm -f ${_ILINKS}
 523
 524 OBJS_DEPEND_GUESS+= ${SRCS:M*.h}
 525 .if defined(KERNBUILDDIR)
 526 OBJS_DEPEND_GUESS+= opt_global.h
 527 .endif
 528
 529 .include <bsd.dep.mk>
 530 .include <bsd.clang-analyze.mk>
 531 .include <bsd.obj.mk>
 532 .include "kern.mk"