The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/conf/kern.post.mk

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    1 # $FreeBSD: stable/11/sys/conf/kern.post.mk 320298 2017-06-23 20:38:21Z bdrewery $
    2 
    3 # Part of a unified Makefile for building kernels.  This part includes all
    4 # the definitions that need to be after all the % directives except %RULES
    5 # and ones that act like they are part of %RULES.
    6 #
    7 # Most make variables should not be defined in this file.  Instead, they
    8 # should be defined in the kern.pre.mk so that port makefiles can
    9 # override or augment them.
   10 
   11 # In case the config had a makeoptions DESTDIR...
   12 .if defined(DESTDIR)
   13 MKMODULESENV+=  DESTDIR="${DESTDIR}"
   14 .endif
   15 SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;:tA}
   16 MKMODULESENV+=  KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
   17 
   18 .if defined(CONF_CFLAGS)
   19 MKMODULESENV+=  CONF_CFLAGS="${CONF_CFLAGS}"
   20 .endif
   21 
   22 .if defined(WITH_CTF)
   23 MKMODULESENV+=  WITH_CTF="${WITH_CTF}"
   24 .endif
   25 
   26 .if defined(WITH_EXTRA_TCP_STACKS)
   27 MKMODULESENV+=  WITH_EXTRA_TCP_STACKS="${WITH_EXTRA_TCP_STACKS}"
   28 .endif
   29 
   30 # Allow overriding the kernel debug directory, so kernel and user debug may be
   31 # installed in different directories. Setting it to "" restores the historical
   32 # behavior of installing debug files in the kernel directory.
   33 KERN_DEBUGDIR?= ${DEBUGDIR}
   34 
   35 .MAIN: all
   36 
   37 .for target in all clean cleandepend cleandir clobber depend install \
   38     obj reinstall tags
   39 ${target}: kernel-${target}
   40 .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
   41 ${target}: modules-${target}
   42 modules-${target}:
   43         cd $S/modules; ${MKMODULESENV} ${MAKE} \
   44             ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
   45 .endif
   46 .endfor
   47 
   48 # Handle ports (as defined by the user) that build kernel modules
   49 .if !defined(NO_MODULES) && defined(PORTS_MODULES)
   50 #
   51 # The ports tree needs some environment variables defined to match the new kernel
   52 #
   53 # Ports search for some dependencies in PATH, so add the location of the installed files
   54 LOCALBASE?=     /usr/local
   55 # SRC_BASE is how the ports tree refers to the location of the base source files
   56 .if !defined(SRC_BASE)
   57 SRC_BASE=       ${SYSDIR:H:tA}
   58 .endif
   59 # OSVERSION is used by some ports to determine build options
   60 .if !defined(OSRELDATE)
   61 # Definition copied from src/Makefile.inc1
   62 OSRELDATE!=     awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
   63                     ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
   64 .endif
   65 # Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
   66 WRKDIRPREFIX?=  ${.OBJDIR}
   67 PORTSMODULESENV=\
   68         env \
   69         -u CC \
   70         -u CXX \
   71         -u CPP \
   72         PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
   73         SRC_BASE=${SRC_BASE} \
   74         OSVERSION=${OSRELDATE} \
   75         WRKDIRPREFIX=${WRKDIRPREFIX}
   76 
   77 # The WRKDIR needs to be cleaned before building, and trying to change the target
   78 # with a :C pattern below results in install -> instclean
   79 all:
   80 .for __i in ${PORTS_MODULES}
   81         @${ECHO} "===> Ports module ${__i} (all)"
   82         cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
   83 .endfor
   84 
   85 .for __target in install reinstall clean
   86 ${__target}: ports-${__target}
   87 ports-${__target}:
   88 .for __i in ${PORTS_MODULES}
   89         @${ECHO} "===> Ports module ${__i} (${__target})"
   90         cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/install/deinstall reinstall/:C/reinstall/deinstall reinstall/}
   91 .endfor
   92 .endfor
   93 .endif
   94 
   95 .ORDER: kernel-install modules-install
   96 
   97 beforebuild: .PHONY
   98 kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
   99 
  100 kernel-cleandir: kernel-clean kernel-cleandepend
  101 
  102 kernel-clobber:
  103         find . -maxdepth 1 ! -type d ! -name version -delete
  104 
  105 kernel-obj:
  106 
  107 .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
  108 modules: modules-all
  109 
  110 .if !defined(NO_MODULES_OBJ)
  111 modules-all modules-depend: modules-obj
  112 .endif
  113 .endif
  114 
  115 .if !defined(DEBUG)
  116 FULLKERNEL=     ${KERNEL_KO}
  117 .else
  118 FULLKERNEL=     ${KERNEL_KO}.full
  119 ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
  120         ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
  121             ${FULLKERNEL} ${.TARGET}
  122 ${KERNEL_KO}.debug: ${FULLKERNEL}
  123         ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
  124 install.debug reinstall.debug: gdbinit
  125         cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
  126 
  127 # Install gdbinit files for kernel debugging.
  128 gdbinit:
  129         grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
  130             sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
  131         cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
  132 .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
  133         cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
  134             ${.CURDIR}/gdbinit.machine
  135 .endif
  136 .endif
  137 
  138 ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
  139         @rm -f ${.TARGET}
  140         @echo linking ${.TARGET}
  141         ${SYSTEM_LD}
  142 .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
  143         @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
  144 .endif
  145 .if ${MK_CTF} != "no"
  146         @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
  147         @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
  148 .endif
  149 .if !defined(DEBUG)
  150         ${OBJCOPY} --strip-debug ${.TARGET}
  151 .endif
  152         ${SYSTEM_LD_TAIL}
  153 
  154 OBJS_DEPEND_GUESS+=     assym.s vnode_if.h ${BEFORE_DEPEND:M*.h} \
  155                         ${MFILES:T:S/.m$/.h/}
  156 LNFILES=        ${CFILES:T:S/.c$/.ln/}
  157 
  158 .for mfile in ${MFILES}
  159 # XXX the low quality .m.o rules gnerated by config are normally used
  160 # instead of the .m.c rules here.
  161 ${mfile:T:S/.m$/.c/}: ${mfile}
  162         ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
  163 ${mfile:T:S/.m$/.h/}: ${mfile}
  164         ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
  165 .endfor
  166 
  167 kernel-clean:
  168         rm -f *.o *.so *.pico *.ko *.s eddep errs \
  169             ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
  170             linterrs tags vers.c \
  171             vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
  172             ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
  173             ${CLEAN}
  174 
  175 lint: ${LNFILES}
  176         ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC} 2>&1 | \
  177             tee -a linterrs
  178 
  179 # This is a hack.  BFD "optimizes" away dynamic mode if there are no
  180 # dynamic references.  We could probably do a '-Bforcedynamic' mode like
  181 # in the a.out ld.  For now, this works.
  182 HACK_EXTRA_FLAGS?= -shared
  183 hack.pico: Makefile
  184         :> hack.c
  185         ${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
  186         rm -f hack.c
  187 
  188 assym.s: $S/kern/genassym.sh genassym.o
  189         NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
  190 
  191 genassym.o: $S/$M/$M/genassym.c
  192         ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/$M/$M/genassym.c
  193 
  194 ${SYSTEM_OBJS} genassym.o vers.o: opt_global.h
  195 
  196 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
  197 _meta_filemon=  1
  198 .endif
  199 # Skip reading .depend when not needed to speed up tree-walks and simple
  200 # lookups.  For install, only do this if no other targets are specified.
  201 # Also skip generating or including .depend.* files if in meta+filemon mode
  202 # since it will track dependencies itself.  OBJS_DEPEND_GUESS is still used.
  203 .if !empty(.MAKEFLAGS:M-V${_V_READ_DEPEND}) || make(*obj) || \
  204     ${.TARGETS:M*clean*} == ${.TARGETS} || \
  205     ${.TARGETS:M*install*} == ${.TARGETS} || \
  206     defined(_meta_filemon)
  207 _SKIP_READ_DEPEND=      1
  208 .MAKE.DEPENDFILE=       /dev/null
  209 .endif
  210 
  211 kernel-depend: .depend
  212 SRCS=   assym.s vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
  213         ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
  214         ${MFILES:T:S/.m$/.h/}
  215 DEPENDFILES=    .depend .depend.*
  216 DEPENDOBJS+=    ${SYSTEM_OBJS} genassym.o
  217 DEPENDFILES_OBJS=       ${DEPENDOBJS:O:u:C/^/.depend./}
  218 .if ${MAKE_VERSION} < 20160220
  219 DEPEND_MP?=     -MP
  220 .endif
  221 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
  222 DEPEND_CFLAGS+= -MT${.TARGET}
  223 .if !defined(_meta_filemon)
  224 .if defined(.PARSEDIR)
  225 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
  226 # as those are the only ones we will include.
  227 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
  228 CFLAGS+=        ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
  229 .else
  230 CFLAGS+=        ${DEPEND_CFLAGS}
  231 .endif
  232 .if !defined(_SKIP_READ_DEPEND)
  233 .for __depend_obj in ${DEPENDFILES_OBJS}
  234 .if ${MAKE_VERSION} < 20160220
  235 .sinclude "${.OBJDIR}/${__depend_obj}"
  236 .else
  237 .dinclude "${.OBJDIR}/${__depend_obj}"
  238 .endif
  239 .endfor
  240 .endif  # !defined(_SKIP_READ_DEPEND)
  241 .endif  # !defined(_meta_filemon)
  242 
  243 # Always run 'make depend' to generate dependencies early and to avoid the
  244 # need for manually running it.  For the kernel this is mostly a NOP since
  245 # all dependencies are correctly added or accounted for.  This is mostly to
  246 # ensure downstream uses of kernel-depend are handled.
  247 beforebuild: kernel-depend
  248 
  249 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
  250 # For meta+filemon the .meta file is checked for since it is the dependency
  251 # file used.
  252 .for __obj in ${DEPENDOBJS:O:u}
  253 .if (defined(_meta_filemon) && !exists(${.OBJDIR}/${__obj}.meta)) || \
  254     (!defined(_meta_filemon) && !exists(${.OBJDIR}/.depend.${__obj}))
  255 .if ${SYSTEM_OBJS:M${__obj}}
  256 ${__obj}: ${OBJS_DEPEND_GUESS}
  257 .endif
  258 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
  259 .elif defined(_meta_filemon)
  260 # For meta mode we still need to know which file to depend on to avoid
  261 # ambiguous suffix transformation rules from .PATH.  Meta mode does not
  262 # use .depend files.  We really only need source files, not headers since
  263 # they are typically in SRCS/beforebuild already.  For target-specific
  264 # guesses do include headers though since they may not be in SRCS.
  265 .if ${SYSTEM_OBJS:M${__obj}}
  266 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
  267 .endif
  268 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
  269 .endif
  270 .endfor
  271 
  272 .NOPATH: .depend ${DEPENDFILES_OBJS}
  273 
  274 .depend: .PRECIOUS ${SRCS}
  275 
  276 _ILINKS= machine
  277 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
  278 _ILINKS+= ${MACHINE_CPUARCH}
  279 .endif
  280 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
  281 _ILINKS+= x86
  282 .endif
  283 
  284 # Ensure that the link exists without depending on it when it exists.
  285 .for _link in ${_ILINKS}
  286 .if !exists(${.OBJDIR}/${_link})
  287 ${SRCS} ${CLEAN:M*.o}: ${_link}
  288 .endif
  289 .endfor
  290 
  291 ${_ILINKS}:
  292         @case ${.TARGET} in \
  293         machine) \
  294                 path=${S}/${MACHINE}/include ;; \
  295         *) \
  296                 path=${S}/${.TARGET}/include ;; \
  297         esac ; \
  298         ${ECHO} ${.TARGET} "->" $$path ; \
  299         ln -fhs $$path ${.TARGET}
  300 
  301 # .depend needs include links so we remove them only together.
  302 kernel-cleandepend: .PHONY
  303         rm -f ${DEPENDFILES} ${_ILINKS}
  304 
  305 kernel-tags:
  306         @[ -f .depend ] || { echo "you must make depend first"; exit 1; }
  307         sh $S/conf/systags.sh
  308 
  309 kernel-install: .PHONY
  310         @if [ ! -f ${KERNEL_KO} ] ; then \
  311                 echo "You must build a kernel first." ; \
  312                 exit 1 ; \
  313         fi
  314 .if exists(${DESTDIR}${KODIR})
  315         -thiskernel=`sysctl -n kern.bootfile` ; \
  316         if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
  317                 chflags -R noschg ${DESTDIR}${KODIR} ; \
  318                 rm -rf ${DESTDIR}${KODIR} ; \
  319                 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
  320         else \
  321                 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
  322                         chflags -R noschg ${DESTDIR}${KODIR}.old ; \
  323                         rm -rf ${DESTDIR}${KODIR}.old ; \
  324                 fi ; \
  325                 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
  326                 if [ -n "${KERN_DEBUGDIR}" -a \
  327                      -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
  328                         rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
  329                         mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
  330                 fi ; \
  331                 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
  332         fi
  333 .endif
  334         mkdir -p ${DESTDIR}${KODIR}
  335         ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
  336 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
  337         mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
  338         ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
  339 .endif
  340 .if defined(KERNEL_EXTRA_INSTALL)
  341         ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
  342 .endif
  343 
  344 
  345 
  346 kernel-reinstall:
  347         @-chflags -R noschg ${DESTDIR}${KODIR}
  348         ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
  349 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
  350         ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
  351 .endif
  352 
  353 config.o env.o hints.o vers.o vnode_if.o:
  354         ${NORMAL_C}
  355         ${NORMAL_CTFCONVERT}
  356 
  357 config.ln env.ln hints.ln vers.ln vnode_if.ln:
  358         ${NORMAL_LINT}
  359 
  360 .if ${MK_REPRODUCIBLE_BUILD} != "no"
  361 REPRO_FLAG="-r"
  362 .endif
  363 vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
  364         MAKE=${MAKE} sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
  365 
  366 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
  367         ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
  368 
  369 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
  370     $S/kern/vnode_if.src
  371 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
  372         ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
  373 vnode_if_newproto.h:
  374         ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
  375 vnode_if_typedef.h:
  376         ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
  377 
  378 .if ${MFS_IMAGE:Uno} != "no"
  379 .if empty(MD_ROOT_SIZE_CONFIGURED)
  380 # Generate an object file from the file system image to embed in the kernel
  381 # via linking. Make sure the contents are in the mfs section and rename the
  382 # start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
  383 # respectively.
  384 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
  385         ${OBJCOPY} --input-target binary \
  386             --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
  387             --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
  388             ${MFS_IMAGE} ${.TARGET}
  389         ${OBJCOPY} \
  390             --rename-section .data=mfs,contents,alloc,load,readonly,data \
  391             --redefine-sym \
  392                 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
  393             --redefine-sym \
  394                 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
  395             --redefine-sym \
  396                 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
  397             ${.TARGET}
  398 .endif
  399 .endif
  400 
  401 # XXX strictly, everything depends on Makefile because changes to ${PROF}
  402 # only appear there, but we don't handle that.
  403 
  404 .include "kern.mk"

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