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 # 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/mipse[lb]/mips/:C/armeb/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
  77 .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
  78
  79 # amd64 and mips use direct linking for kmod, all others use shared binaries
  80 .if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips
  81 __KLD_SHARED=yes
  82 .else
  83 __KLD_SHARED=no
  84 .endif
  85
  86 .if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
  87 CFLAGS+=        -fno-strict-aliasing
  88 .endif
  89 WERROR?=        -Werror
  90 CFLAGS+=        ${WERROR}
  91 CFLAGS+=        -D_KERNEL
  92 CFLAGS+=        -DKLD_MODULE
  93
  94 # Don't use any standard or source-relative include directories.
  95 CSTD=           c99
  96 NOSTDINC=       -nostdinc
  97 CFLAGS:=        ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*}
  98 .if defined(KERNBUILDDIR)
  99 CFLAGS+=        -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h
 100 .endif
 101
 102 # Add -I paths for system headers.  Individual module makefiles don't
 103 # need any -I paths for this.  Similar defaults for .PATH can't be
 104 # set because there are no standard paths for non-headers.
 105 CFLAGS+=        -I. -I@
 106
 107 # Add -I path for altq headers as they are included via net/if_var.h
 108 # for example.
 109 CFLAGS+=        -I@/contrib/altq
 110
 111 .if ${MK_CLANG_IS_CC} == "no" && ${CC:T:Mclang} != "clang"
 112 CFLAGS+=        -finline-limit=${INLINE_LIMIT}
 113 CFLAGS+= --param inline-unit-growth=100
 114 CFLAGS+= --param large-function-growth=1000
 115 .endif
 116
 117 # Disallow common variables, and if we end up with commons from
 118 # somewhere unexpected, allocate storage for them in the module itself.
 119 CFLAGS+=        -fno-common
 120 LDFLAGS+=       -d -warn-common
 121
 122 CFLAGS+=        ${DEBUG_FLAGS}
 123 .if ${MACHINE_CPUARCH} == amd64
 124 CFLAGS+=        -fno-omit-frame-pointer
 125 .endif
 126
 127 .if ${MACHINE_CPUARCH} == powerpc
 128 CFLAGS+=        -mlongcall -fno-omit-frame-pointer
 129 .endif
 130
 131 .if ${MACHINE_CPUARCH} == mips
 132 CFLAGS+=        -G0 -fno-pic -mno-abicalls -mlong-calls
 133 .endif
 134
 135 .if defined(DEBUG) || defined(DEBUG_FLAGS)
 136 CTFFLAGS+=      -g
 137 .endif
 138
 139 .if defined(FIRMWS)
 140 .if !exists(@)
 141 ${KMOD:S/$/.c/}: @
 142 .else
 143 ${KMOD:S/$/.c/}: @/tools/fw_stub.awk
 144 .endif
 145         ${AWK} -f @/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \
 146             ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE}
 147
 148 SRCS+=  ${KMOD:S/$/.c/}
 149 CLEANFILES+=    ${KMOD:S/$/.c/}
 150
 151 .for _firmw in ${FIRMWS}
 152 ${_firmw:C/\:.*$/.fwo/}:        ${_firmw:C/\:.*$//}
 153         @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}}
 154         @if [ -e ${_firmw:C/\:.*$//} ]; then                    \
 155                 ${LD} -b binary --no-warn-mismatch ${LDFLAGS}   \
 156                     -r -d -o ${.TARGET} ${_firmw:C/\:.*$//};    \
 157         else                                                    \
 158                 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \
 159                 ${LD} -b binary --no-warn-mismatch ${LDFLAGS}   \
 160                     -r -d -o ${.TARGET} ${_firmw:C/\:.*$//};    \
 161                 rm ${_firmw:C/\:.*$//};                         \
 162         fi
 163
 164 OBJS+=  ${_firmw:C/\:.*$/.fwo/}
 165 .endfor
 166 .endif
 167
 168 OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
 169
 170 .if !defined(PROG)
 171 PROG=   ${KMOD}.ko
 172 .endif
 173
 174 .if !defined(DEBUG_FLAGS)
 175 FULLPROG=       ${PROG}
 176 .else
 177 FULLPROG=       ${PROG}.debug
 178 ${PROG}: ${FULLPROG} ${PROG}.symbols
 179         ${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.symbols\
 180             ${FULLPROG} ${.TARGET}
 181 ${PROG}.symbols: ${FULLPROG}
 182         ${OBJCOPY} --only-keep-debug ${FULLPROG} ${.TARGET}
 183 .endif
 184
 185 .if ${__KLD_SHARED} == yes
 186 ${FULLPROG}: ${KMOD}.kld
 187         ${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
 188 .if !defined(DEBUG_FLAGS)
 189         ${OBJCOPY} --strip-debug ${.TARGET}
 190 .endif
 191 .endif
 192
 193 EXPORT_SYMS?=   NO
 194 .if ${EXPORT_SYMS} != YES
 195 CLEANFILES+=    export_syms
 196 .endif
 197
 198 .if ${__KLD_SHARED} == yes
 199 ${KMOD}.kld: ${OBJS}
 200 .else
 201 ${FULLPROG}: ${OBJS}
 202 .endif
 203         ${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
 204 .if defined(MK_CTF) && ${MK_CTF} != "no"
 205         ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS}
 206 .endif
 207 .if defined(EXPORT_SYMS)
 208 .if ${EXPORT_SYMS} != YES
 209 .if ${EXPORT_SYMS} == NO
 210         :> export_syms
 211 .elif !exists(${.CURDIR}/${EXPORT_SYMS})
 212         echo ${EXPORT_SYMS} > export_syms
 213 .else
 214         grep -v '^#' < ${EXPORT_SYMS} > export_syms
 215 .endif
 216         awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
 217             export_syms | xargs -J% ${OBJCOPY} % ${.TARGET}
 218 .endif
 219 .endif
 220 .if !defined(DEBUG_FLAGS) && ${__KLD_SHARED} == no
 221         ${OBJCOPY} --strip-debug ${.TARGET}
 222 .endif
 223
 224 _ILINKS=@ machine
 225 .if ${MACHINE} != ${MACHINE_CPUARCH}
 226 _ILINKS+=${MACHINE_CPUARCH}
 227 .endif
 228 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
 229 _ILINKS+=x86
 230 .endif
 231
 232 all: objwarn ${PROG}
 233
 234 beforedepend: ${_ILINKS}
 235
 236 # Ensure that the links exist without depending on it when it exists which
 237 # causes all the modules to be rebuilt when the directory pointed to changes.
 238 .for _link in ${_ILINKS}
 239 .if !exists(${.OBJDIR}/${_link})
 240 ${OBJS}: ${_link}
 241 .endif
 242 .endfor
 243
 244 # Search for kernel source tree in standard places.
 245 .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
 246 .if !defined(SYSDIR) && exists(${_dir}/kern/)
 247 SYSDIR= ${_dir}
 248 .endif
 249 .endfor
 250 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
 251 .error "can't find kernel source tree"
 252 .endif
 253
 254 ${_ILINKS}:
 255         @case ${.TARGET} in \
 256         machine) \
 257                 path=${SYSDIR}/${MACHINE}/include ;; \
 258         @) \
 259                 path=${SYSDIR} ;; \
 260         *) \
 261                 path=${SYSDIR}/${.TARGET}/include ;; \
 262         esac ; \
 263         path=`(cd $$path && /bin/pwd)` ; \
 264         ${ECHO} ${.TARGET} "->" $$path ; \
 265         ln -sf $$path ${.TARGET}
 266
 267 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS}
 268
 269 .if defined(DEBUG_FLAGS)
 270 CLEANFILES+= ${FULLPROG} ${PROG}.symbols
 271 .endif
 272
 273 .if !target(install)
 274
 275 _INSTALLFLAGS:= ${INSTALLFLAGS}
 276 .for ie in ${INSTALLFLAGS_EDIT}
 277 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
 278 .endfor
 279
 280 .if !target(realinstall)
 281 realinstall: _kmodinstall
 282 .ORDER: beforeinstall _kmodinstall
 283 _kmodinstall:
 284         ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
 285             ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
 286 .if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && \
 287     (defined(MK_KERNEL_SYMBOLS) && ${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/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \
 344         dev/mmc/mmcbr_if.m dev/mmc/mmcbus_if.m \
 345         dev/mii/miibus_if.m dev/mvs/mvs_if.m dev/ofw/ofw_bus_if.m \
 346         dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
 347         dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
 348         dev/sound/pci/hda/hdac_if.m \
 349         dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
 350         dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m \
 351         dev/sound/midi/mpu_if.m dev/sound/midi/mpufoi_if.m \
 352         dev/sound/midi/synth_if.m dev/usb/usb_if.m isa/isa_if.m \
 353         kern/bus_if.m kern/clock_if.m \
 354         kern/cpufreq_if.m kern/device_if.m kern/serdev_if.m \
 355         libkern/iconv_converter_if.m opencrypto/cryptodev_if.m \
 356         pc98/pc98/canbus_if.m
 357
 358 .for _srcsrc in ${MFILES}
 359 .for _ext in c h
 360 .for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
 361 CLEANFILES+=    ${_src}
 362 .if !target(${_src})
 363 .if !exists(@)
 364 ${_src}: @
 365 .else
 366 ${_src}: @/tools/makeobjops.awk @/${_srcsrc}
 367 .endif
 368         ${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
 369 .endif
 370 .endfor # _src
 371 .endfor # _ext
 372 .endfor # _srcsrc
 373
 374 .if !empty(SRCS:Mvnode_if.c)
 375 CLEANFILES+=    vnode_if.c
 376 .if !exists(@)
 377 vnode_if.c: @
 378 .else
 379 vnode_if.c: @/tools/vnode_if.awk @/kern/vnode_if.src
 380 .endif
 381         ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -c
 382 .endif
 383
 384 .if !empty(SRCS:Mvnode_if.h)
 385 CLEANFILES+=    vnode_if.h vnode_if_newproto.h vnode_if_typedef.h
 386 .if !exists(@)
 387 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @
 388 .else
 389 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @/tools/vnode_if.awk \
 390     @/kern/vnode_if.src
 391 .endif
 392 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
 393         ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -h
 394 vnode_if_newproto.h:
 395         ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -p
 396 vnode_if_typedef.h:
 397         ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -q
 398 .endif
 399
 400 .for _i in mii pccard
 401 .if !empty(SRCS:M${_i}devs.h)
 402 CLEANFILES+=    ${_i}devs.h
 403 .if !exists(@)
 404 ${_i}devs.h: @
 405 .else
 406 ${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
 407 .endif
 408         ${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
 409 .endif
 410 .endfor # _i
 411
 412 .if !empty(SRCS:Musbdevs.h)
 413 CLEANFILES+=    usbdevs.h
 414 .if !exists(@)
 415 usbdevs.h: @
 416 .else
 417 usbdevs.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs
 418 .endif
 419         ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -h
 420 .endif
 421
 422 .if !empty(SRCS:Musbdevs_data.h)
 423 CLEANFILES+=    usbdevs_data.h
 424 .if !exists(@)
 425 usbdevs_data.h: @
 426 .else
 427 usbdevs_data.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs
 428 .endif
 429         ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -d
 430 .endif
 431
 432 .if !empty(SRCS:Macpi_quirks.h)
 433 CLEANFILES+=    acpi_quirks.h
 434 .if !exists(@)
 435 acpi_quirks.h: @
 436 .else
 437 acpi_quirks.h: @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
 438 .endif
 439         ${AWK} -f @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
 440 .endif
 441
 442 .if !empty(SRCS:Massym.s)
 443 CLEANFILES+=    assym.s genassym.o
 444 assym.s: genassym.o
 445 .if defined(KERNBUILDDIR)
 446 genassym.o: opt_global.h
 447 .endif
 448 .if !exists(@)
 449 assym.s: @
 450 .else
 451 assym.s: @/kern/genassym.sh
 452 .endif
 453         sh @/kern/genassym.sh genassym.o > ${.TARGET}
 454 .if exists(@)
 455 genassym.o: @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c
 456 .endif
 457 genassym.o: @ machine ${SRCS:Mopt_*.h}
 458         ${CC} -c ${CFLAGS:N-fno-common} \
 459             @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c
 460 .endif
 461
 462 lint: ${SRCS}
 463         ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
 464
 465 .if defined(KERNBUILDDIR)
 466 ${OBJS}: opt_global.h
 467 .endif
 468
 469 .include <bsd.dep.mk>
 470
 471 cleandepend: cleanilinks
 472 # .depend needs include links so we remove them only together.
 473 cleanilinks:
 474         rm -f ${_ILINKS}
 475
 476 .if !exists(${.OBJDIR}/${DEPENDFILE})
 477 ${OBJS}: ${SRCS:M*.h}
 478 .endif
 479
 480 .include <bsd.obj.mk>
 481 .include "kern.mk"