The Design and Implementation of the FreeBSD Operating System, Second Edition
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/5.3/sys/conf/kmod.mk 136588 2004-10-16 08:43:07Z cvs2svn $
    3 #
    4 # The include file <bsd.kmod.mk> handles installing Kernel Loadable Device
    5 # drivers (KLD's).
    6 #
    7 #
    8 # +++ variables +++
    9 #
   10 # CLEANFILES    Additional files to remove for the clean and cleandir targets.
   11 #
   12 # KMOD          The name of the kernel module to build.
   13 #
   14 # KMODDIR       Base path for kernel modules (see kld(4)). [/boot/kernel]
   15 #
   16 # KMODOWN       KLD owner. [${BINOWN}]
   17 #
   18 # KMODGRP       KLD group. [${BINGRP}]
   19 #
   20 # KMODMODE      KLD mode. [${BINMODE}]
   21 #
   22 # KMODLOAD      Command to load a kernel module [/sbin/kldload]
   23 #
   24 # KMODUNLOAD    Command to unload a kernel module [/sbin/kldunload]
   25 #
   26 # PROG          The name of the kernel module to build.
   27 #               If not supplied, ${KMOD}.o is used.
   28 #
   29 # SRCS          List of source files
   30 #
   31 # DESTDIR       Change the tree where the module gets installed. [not set]
   32 #
   33 # MFILES        Optionally a list of interfaces used by the module.
   34 #               This file contains a default list of interfaces.
   35 #
   36 # EXPORT_SYMS   A list of symbols that should be exported from the module,
   37 #               or the name of a file containing a list of symbols, or YES
   38 #               to export all symbols.  If not defined, no symbols are
   39 #               exported.
   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 KLD.
   52 #
   53 #       unload:
   54 #               Unload KLD.
   55 #
   56 # bsd.obj.mk: clean, cleandir and obj
   57 # bsd.dep.mk: cleandepend, depend and tags
   58 #
   59 
   60 AWK?=           awk
   61 KMODLOAD?=      /sbin/kldload
   62 KMODUNLOAD?=    /sbin/kldunload
   63 OBJCOPY?=       objcopy
   64 
   65 .if defined(KMODDEPS)
   66 .error "Do not use KMODDEPS on 5.0+, use MODULE_VERSION/MODULE_DEPEND"
   67 .endif
   68 
   69 .include <bsd.init.mk>
   70 
   71 .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
   72 
   73 .if ${CC} == "icc"
   74 CFLAGS:=        ${CFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
   75 .endif
   76 CFLAGS+=        -D_KERNEL
   77 CFLAGS+=        -DKLD_MODULE
   78 
   79 # Don't use any standard or source-relative include directories.
   80 # Since -nostdinc will annull any previous -I paths, we repeat all
   81 # such paths after -nostdinc.  It doesn't seem to be possible to
   82 # add to the front of `make' variable.
   83 _ICFLAGS:=      ${CFLAGS:M-I*}
   84 .if ${CC} == "icc"
   85 NOSTDINC=       -X
   86 .else
   87 NOSTDINC=       -nostdinc
   88 .endif
   89 CFLAGS+=        ${NOSTDINC} -I- ${INCLMAGIC} ${_ICFLAGS}
   90 .if defined(KERNBUILDDIR)
   91 CFLAGS+=       -include ${KERNBUILDDIR}/opt_global.h
   92 .endif
   93 
   94 # Add -I paths for system headers.  Individual KLD makefiles don't
   95 # need any -I paths for this.  Similar defaults for .PATH can't be
   96 # set because there are no standard paths for non-headers.
   97 CFLAGS+=        -I. -I@
   98 
   99 # Add -I path for altq headers as they are included via net/if_var.h
  100 # for example.
  101 CFLAGS+=        -I@/contrib/altq
  102 
  103 # Add a -I path to standard headers like <stddef.h>.  Use a relative
  104 # path to src/include if possible.  If the @ symlink hasn't been built
  105 # yet, then we can't tell if the relative path exists.  Add both the
  106 # potential relative path and an absolute path in that case.
  107 .if exists(@)
  108 .if exists(@/../include)
  109 CFLAGS+=        -I@/../include
  110 .else
  111 CFLAGS+=        -I${DESTDIR}/usr/include
  112 .endif
  113 .else # !@
  114 CFLAGS+=        -I@/../include -I${DESTDIR}/usr/include
  115 .endif # @
  116 
  117 .if ${CC} != "icc"
  118 CFLAGS+=        -finline-limit=${INLINE_LIMIT}
  119 .endif
  120 
  121 # Disallow common variables, and if we end up with commons from
  122 # somewhere unexpected, allocate storage for them in the module itself.
  123 .if ${CC} != "icc"
  124 CFLAGS+=        -fno-common
  125 .endif
  126 LDFLAGS+=       -d -warn-common
  127 
  128 CFLAGS+=        ${DEBUG_FLAGS}
  129 
  130 OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
  131 
  132 .if !defined(PROG)
  133 PROG=   ${KMOD}.ko
  134 .endif
  135 
  136 .if !defined(DEBUG_FLAGS)
  137 FULLPROG=       ${PROG}
  138 .else
  139 FULLPROG=       ${PROG}.debug
  140 ${PROG}: ${FULLPROG}
  141         ${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
  142 .endif
  143 
  144 .if ${MACHINE_ARCH} != amd64
  145 ${FULLPROG}: ${KMOD}.kld
  146         ${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
  147 .if !defined(DEBUG_FLAGS)
  148         ${OBJCOPY} --strip-debug ${.TARGET}
  149 .endif
  150 .endif
  151 
  152 EXPORT_SYMS?=   NO
  153 .if ${EXPORT_SYMS} != YES
  154 CLEANFILES+=    ${.OBJDIR}/export_syms
  155 .endif
  156 
  157 .if ${MACHINE_ARCH} != amd64
  158 ${KMOD}.kld: ${OBJS}
  159 .else
  160 ${FULLPROG}: ${OBJS}
  161 .endif
  162         ${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
  163 .if defined(EXPORT_SYMS)
  164 .if ${EXPORT_SYMS} != YES
  165 .if ${EXPORT_SYMS} == NO
  166         touch ${.OBJDIR}/export_syms
  167 .elif !exists(${.CURDIR}/${EXPORT_SYMS})
  168         echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
  169 .else
  170         grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
  171 .endif
  172         awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
  173                 ${.OBJDIR}/export_syms | \
  174         xargs -J% ${OBJCOPY} % ${.TARGET}
  175 .endif
  176 .endif
  177 .if !defined(DEBUG_FLAGS) && ${MACHINE_ARCH} == amd64
  178         ${OBJCOPY} --strip-debug ${.TARGET}
  179 .endif
  180 
  181 _ILINKS=@ machine
  182 
  183 all: objwarn ${PROG}
  184 
  185 beforedepend: ${_ILINKS}
  186         @rm -f .depend
  187 
  188 # Ensure that the links exist without depending on it when it exists which
  189 # causes all the modules to be rebuilt when the directory pointed to changes.
  190 .for _link in ${_ILINKS}
  191 .if !exists(${.OBJDIR}/${_link})
  192 ${OBJS}: ${_link}
  193 .endif
  194 .endfor
  195 
  196 # Search for kernel source tree in standard places.
  197 .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
  198 .if !defined(SYSDIR) && exists(${_dir}/kern/)
  199 SYSDIR= ${_dir}
  200 .endif
  201 .endfor
  202 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
  203 .error "can't find kernel source tree"
  204 .endif
  205 
  206 ${_ILINKS}:
  207         @case ${.TARGET} in \
  208         machine) \
  209                 path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
  210         @) \
  211                 path=${SYSDIR} ;; \
  212         esac ; \
  213         path=`(cd $$path && /bin/pwd)` ; \
  214         ${ECHO} ${.TARGET} "->" $$path ; \
  215         ln -s $$path ${.TARGET}
  216 
  217 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
  218 
  219 .if defined(DEBUG_FLAGS)
  220 CLEANFILES+= ${FULLPROG}
  221 .endif
  222 
  223 .if !target(install)
  224 
  225 _INSTALLFLAGS:= ${INSTALLFLAGS}
  226 .for ie in ${INSTALLFLAGS_EDIT}
  227 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
  228 .endfor
  229 
  230 .if defined(DEBUG_FLAGS)
  231 install.debug:
  232         cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
  233 .endif
  234 
  235 .if !target(realinstall)
  236 realinstall: _kmodinstall
  237 .ORDER: beforeinstall _kmodinstall
  238 _kmodinstall:
  239 .if defined(DEBUG_FLAGS) && defined(INSTALL_DEBUG)
  240         ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
  241             ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
  242 .else
  243         ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
  244             ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
  245 
  246 .include <bsd.links.mk>
  247 
  248 .if !defined(NO_XREF)
  249 afterinstall: _kldxref
  250 .ORDER: realinstall _kldxref
  251 .ORDER: _installlinks _kldxref
  252 _kldxref:
  253         @if type kldxref >/dev/null 2>&1; then \
  254                 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
  255                 kldxref ${DESTDIR}${KMODDIR}; \
  256         fi
  257 .endif
  258 .endif
  259 .endif !target(realinstall)
  260 
  261 .endif !target(install)
  262 
  263 .if !target(load)
  264 load:   ${PROG}
  265         ${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
  266 .endif
  267 
  268 .if !target(unload)
  269 unload:
  270         ${KMODUNLOAD} -v ${KMOD}
  271 .endif
  272 
  273 .if defined(KERNBUILDDIR)
  274 .PATH: ${KERNBUILDDIR}
  275 CFLAGS += -I${KERNBUILDDIR}
  276 .for _src in ${SRCS:Mopt_*.h}
  277 CLEANFILES+=    ${_src}
  278 .if !target(${_src})
  279 ${_src}:
  280         ln -s ${KERNBUILDDIR}/${_src} ${.TARGET}
  281 .endif
  282 .endfor
  283 .else
  284 .for _src in ${SRCS:Mopt_*.h}
  285 CLEANFILES+=    ${_src}
  286 .if !target(${_src})
  287 ${_src}:
  288         touch ${.TARGET}
  289 .endif
  290 .endfor
  291 .endif
  292 
  293 MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
  294     dev/iicbus/iicbus_if.m isa/isa_if.m \
  295     libkern/iconv_converter_if.m \
  296     dev/acpica/acpi_if.m dev/eisa/eisa_if.m dev/mii/miibus_if.m \
  297     dev/ofw/ofw_bus_if.m \
  298     dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
  299     dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
  300     dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
  301     dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m \
  302     opencrypto/crypto_if.m pc98/pc98/canbus_if.m dev/uart/uart_if.m \
  303     sparc64/pci/ofw_pci_if.m
  304 
  305 .for _srcsrc in ${MFILES}
  306 .for _ext in c h
  307 .for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
  308 CLEANFILES+=    ${_src}
  309 .if !target(${_src})
  310 .if !exists(@)
  311 ${_src}: @
  312 .endif
  313 .if exists(@)
  314 ${_src}: @/tools/makeobjops.awk @/${_srcsrc}
  315 .endif
  316         ${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
  317 .endif
  318 .endfor # _src
  319 .endfor # _ext
  320 .endfor # _srcsrc
  321 
  322 .for _ext in c h
  323 .if ${SRCS:Mvnode_if.${_ext}} != ""
  324 CLEANFILES+=    vnode_if.${_ext}
  325 .if !exists(@)
  326 vnode_if.${_ext}: @
  327 .endif
  328 .if exists(@)
  329 vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
  330 .endif
  331         ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
  332 .endif
  333 .endfor
  334 
  335 .for _i in mii pccard usb
  336 .if ${SRCS:M${_i}devs.h} != ""
  337 CLEANFILES+=    ${_i}devs.h
  338 .if !exists(@)
  339 ${_i}devs.h: @
  340 .endif
  341 .if exists(@)
  342 ${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
  343 .endif
  344         ${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
  345 .endif
  346 .endfor # _i
  347 
  348 .if ${SRCS:Macpi_quirks.h} != ""
  349 CLEANFILES+=    acpi_quirks.h
  350 .if !exists(@)
  351 acpi_quirks.h: @
  352 .endif
  353 .if exists(@)
  354 acpi_quirks.h: @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
  355 .endif
  356         ${AWK} -f @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
  357 .endif
  358 
  359 regress:
  360 
  361 lint: ${SRCS}
  362         ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
  363 
  364 .include <bsd.dep.mk>
  365 
  366 .if !exists(${.OBJDIR}/${DEPENDFILE})
  367 ${OBJS}: ${SRCS:M*.h}
  368 .endif
  369 
  370 .include <bsd.obj.mk>
  371 .include "kern.mk"

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