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/5.2/sys/conf/kmod.mk 122894 2003-11-19 05:08:27Z imp $
    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 CFLAGS+=        ${COPTS} -D_KERNEL ${CWARNFLAGS}
   74 CFLAGS+=        -DKLD_MODULE
   75 
   76 # Don't use any standard or source-relative include directories.
   77 # Since -nostdinc will annull any previous -I paths, we repeat all
   78 # such paths after -nostdinc.  It doesn't seem to be possible to
   79 # add to the front of `make' variable.
   80 _ICFLAGS:=      ${CFLAGS:M-I*}
   81 CFLAGS+=        -nostdinc -I- ${INCLMAGIC} ${_ICFLAGS}
   82 .if defined(KERNBUILDDIR)
   83 CFLAGS+=       -include ${KERNBUILDDIR}/opt_global.h
   84 .endif
   85 
   86 # Add -I paths for system headers.  Individual KLD makefiles don't
   87 # need any -I paths for this.  Similar defaults for .PATH can't be
   88 # set because there are no standard paths for non-headers.
   89 CFLAGS+=        -I. -I@
   90 
   91 # Add a -I path to standard headers like <stddef.h>.  Use a relative
   92 # path to src/include if possible.  If the @ symlink hasn't been built
   93 # yet, then we can't tell if the relative path exists.  Add both the
   94 # potential relative path and an absolute path in that case.
   95 .if exists(@)
   96 .if exists(@/../include)
   97 CFLAGS+=        -I@/../include
   98 .else
   99 CFLAGS+=        -I${DESTDIR}/usr/include
  100 .endif
  101 .else # !@
  102 CFLAGS+=        -I@/../include -I${DESTDIR}/usr/include
  103 .endif # @
  104 
  105 CFLAGS+=        -finline-limit=${INLINE_LIMIT}
  106 
  107 # Disallow common variables, and if we end up with commons from
  108 # somewhere unexpected, allocate storage for them in the module itself.
  109 CFLAGS+=        -fno-common
  110 LDFLAGS+=       -d -warn-common
  111 
  112 CFLAGS+=        ${DEBUG_FLAGS}
  113 
  114 OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
  115 
  116 .if !defined(PROG)
  117 PROG=   ${KMOD}.ko
  118 .endif
  119 
  120 .if !defined(DEBUG)
  121 FULLPROG=       ${PROG}
  122 .else
  123 FULLPROG=       ${PROG}.debug
  124 ${PROG}: ${FULLPROG}
  125         ${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
  126 .endif
  127 
  128 ${FULLPROG}: ${KMOD}.kld
  129         ${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
  130 
  131 EXPORT_SYMS?=   NO
  132 .if ${EXPORT_SYMS} != YES
  133 CLEANFILES+=    ${.OBJDIR}/export_syms
  134 .endif
  135 
  136 ${KMOD}.kld: ${OBJS}
  137         ${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
  138 .if defined(EXPORT_SYMS)
  139 .if ${EXPORT_SYMS} != YES
  140 .if ${EXPORT_SYMS} == NO
  141         touch ${.OBJDIR}/export_syms
  142 .elif !exists(${.CURDIR}/${EXPORT_SYMS})
  143         echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
  144 .else
  145         grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
  146 .endif
  147         awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
  148                 ${.OBJDIR}/export_syms | \
  149         xargs -J% ${OBJCOPY} % ${.TARGET}
  150 .endif
  151 .endif
  152 
  153 _ILINKS=@ machine
  154 
  155 all: objwarn ${PROG}
  156 
  157 beforedepend: ${_ILINKS}
  158         @rm -f .depend
  159 
  160 # Ensure that the links exist without depending on it when it exists which
  161 # causes all the modules to be rebuilt when the directory pointed to changes.
  162 .for _link in ${_ILINKS}
  163 .if !exists(${.OBJDIR}/${_link})
  164 ${OBJS}: ${_link}
  165 .endif
  166 .endfor
  167 
  168 # Search for kernel source tree in standard places.
  169 .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
  170 .if !defined(SYSDIR) && exists(${_dir}/kern)
  171 SYSDIR= ${_dir}
  172 .endif
  173 .endfor
  174 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
  175 .error "can't find kernel source tree"
  176 .endif
  177 
  178 ${_ILINKS}:
  179         @case ${.TARGET} in \
  180         machine) \
  181                 path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
  182         @) \
  183                 path=${SYSDIR} ;; \
  184         esac ; \
  185         path=`(cd $$path && /bin/pwd)` ; \
  186         ${ECHO} ${.TARGET} "->" $$path ; \
  187         ln -s $$path ${.TARGET}
  188 
  189 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
  190 
  191 .if defined(DEBUG)
  192 CLEANFILES+= ${FULLPROG}
  193 .endif
  194 
  195 .if !target(install)
  196 
  197 _INSTALLFLAGS:= ${INSTALLFLAGS}
  198 .for ie in ${INSTALLFLAGS_EDIT}
  199 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
  200 .endfor
  201 
  202 .if defined(DEBUG)
  203 install.debug:
  204         cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
  205 .endif
  206 
  207 .if !target(realinstall)
  208 realinstall: _kmodinstall
  209 .ORDER: beforeinstall _kmodinstall
  210 .if defined(DEBUG) && defined(INSTALL_DEBUG)
  211 _kmodinstall:
  212         ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
  213             ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
  214 .else
  215 _kmodinstall:
  216         ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
  217             ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
  218 
  219 .include <bsd.links.mk>
  220 
  221 .if !defined(NO_XREF)
  222 afterinstall: _kldxref
  223 .ORDER: realinstall _kldxref
  224 .ORDER: _installlinks _kldxref
  225 _kldxref:
  226         @if type kldxref >/dev/null 2>&1; then \
  227                 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
  228                 kldxref ${DESTDIR}${KMODDIR}; \
  229         fi
  230 .endif
  231 .endif
  232 .endif !target(realinstall)
  233 
  234 .endif !target(install)
  235 
  236 .if !target(load)
  237 load:   ${PROG}
  238         ${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
  239 .endif
  240 
  241 .if !target(unload)
  242 unload:
  243         ${KMODUNLOAD} -v ${KMOD}
  244 .endif
  245 
  246 .if defined(KERNBUILDDIR)
  247 .PATH: ${KERNBUILDDIR}
  248 CFLAGS += -I${KERNBUILDDIR}
  249 .for _src in ${SRCS:Mopt_*.h}
  250 CLEANFILES+=    ${_src}
  251 .if !target(${_src})
  252 ${_src}:
  253         ln -s ${KERNBUILDDIR}/${_src} ${.TARGET}
  254 .endif
  255 .endfor
  256 .else
  257 .for _src in ${SRCS:Mopt_*.h}
  258 CLEANFILES+=    ${_src}
  259 .if !target(${_src})
  260 ${_src}:
  261         touch ${.TARGET}
  262 .endif
  263 .endfor
  264 .endif
  265 
  266 MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
  267     dev/iicbus/iicbus_if.m isa/isa_if.m \
  268     libkern/iconv_converter_if.m \
  269     dev/mii/miibus_if.m \
  270     dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
  271     dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
  272     dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
  273     dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m \
  274     opencrypto/crypto_if.m pc98/pc98/canbus_if.m dev/uart/uart_if.m
  275 
  276 .for _srcsrc in ${MFILES}
  277 .for _ext in c h
  278 .for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
  279 CLEANFILES+=    ${_src}
  280 .if !target(${_src})
  281 .if !exists(@)
  282 ${_src}: @
  283 .endif
  284 .if exists(@)
  285 ${_src}: @/tools/makeobjops.awk @/${_srcsrc}
  286 .endif
  287         ${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
  288 .endif
  289 .endfor # _src
  290 .endfor # _ext
  291 .endfor # _srcsrc
  292 
  293 .for _ext in c h
  294 .if ${SRCS:Mvnode_if.${_ext}} != ""
  295 CLEANFILES+=    vnode_if.${_ext}
  296 .if !exists(@)
  297 vnode_if.${_ext}: @
  298 .endif
  299 .if exists(@)
  300 vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
  301 .endif
  302         ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
  303 .endif
  304 .endfor
  305 
  306 .if ${SRCS:Mmiidevs.h} != ""
  307 CLEANFILES+=    miidevs.h
  308 .if !exists(@)
  309 miidevs.h: @
  310 .endif
  311 .if exists(@)
  312 miidevs.h: @/tools/devlist2h.awk @/dev/mii/miidevs
  313 .endif
  314         ${AWK} -f @/tools/devlist2h.awk @/dev/mii/miidevs
  315 .endif
  316 
  317 regress:
  318 
  319 lint: ${SRCS}
  320         ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
  321 
  322 .include <bsd.dep.mk>
  323 
  324 .if !exists(${.OBJDIR}/${DEPENDFILE})
  325 ${OBJS}: ${SRCS:M*.h}
  326 .endif
  327 
  328 .include <bsd.obj.mk>
  329 .include "kern.mk"

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