FreeBSD/Linux Kernel Cross Reference
sys/conf/kern.post.mk

     # $FreeBSD: releng/12.0/sys/conf/kern.post.mk 338598 2018-09-11 19:19:07Z emaste $
     
     # Part of a unified Makefile for building kernels.  This part includes all
     # the definitions that need to be after all the % directives except %RULES
     # and ones that act like they are part of %RULES.
     #
     # Most make variables should not be defined in this file.  Instead, they
     # should be defined in the kern.pre.mk so that port makefiles can
     # override or augment them.
    
    # In case the config had a makeoptions DESTDIR...
    .if defined(DESTDIR)
    MKMODULESENV+=  DESTDIR="${DESTDIR}"
    .endif
    SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;:tA}
    MKMODULESENV+=  KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
    MKMODULESENV+=  MODULE_TIED=yes
    
    .if defined(CONF_CFLAGS)
    MKMODULESENV+=  CONF_CFLAGS="${CONF_CFLAGS}"
    .endif
    
    .if defined(WITH_CTF)
    MKMODULESENV+=  WITH_CTF="${WITH_CTF}"
    .endif
    
    .if defined(WITH_EXTRA_TCP_STACKS)
    MKMODULESENV+=  WITH_EXTRA_TCP_STACKS="${WITH_EXTRA_TCP_STACKS}"
    .endif
    
    # Allow overriding the kernel debug directory, so kernel and user debug may be
    # installed in different directories. Setting it to "" restores the historical
    # behavior of installing debug files in the kernel directory.
    KERN_DEBUGDIR?= ${DEBUGDIR}
    
    .MAIN: all
    
    .for target in all clean cleandepend cleandir clobber depend install \
        ${_obj} reinstall tags
    ${target}: kernel-${target}
    .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
    ${target}: modules-${target}
    modules-${target}:
            cd $S/modules; ${MKMODULESENV} ${MAKE} \
                ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
    .endif
    .endfor
    
    # Handle ports (as defined by the user) that build kernel modules
    .if !defined(NO_MODULES) && defined(PORTS_MODULES)
    #
    # The ports tree needs some environment variables defined to match the new kernel
    #
    # Ports search for some dependencies in PATH, so add the location of the installed files
    LOCALBASE?=     /usr/local
    # SRC_BASE is how the ports tree refers to the location of the base source files
    .if !defined(SRC_BASE)
    SRC_BASE=       ${SYSDIR:H:tA}
    .endif
    # OSVERSION is used by some ports to determine build options
    .if !defined(OSRELDATE)
    # Definition copied from src/Makefile.inc1
    OSRELDATE!=     awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
                        ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
    .endif
    # Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
    WRKDIRPREFIX?=  ${.OBJDIR}
    PORTSMODULESENV=\
            env \
            -u CC \
            -u CXX \
            -u CPP \
            -u MAKESYSPATH \
            -u MK_AUTO_OBJ \
            -u MAKEOBJDIR \
            MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
            SYSDIR=${SYSDIR} \
            PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
            SRC_BASE=${SRC_BASE} \
            OSVERSION=${OSRELDATE} \
            WRKDIRPREFIX=${WRKDIRPREFIX}
    
    # The WRKDIR needs to be cleaned before building, and trying to change the target
    # with a :C pattern below results in install -> instclean
    all:
    .for __i in ${PORTS_MODULES}
            @${ECHO} "===> Ports module ${__i} (all)"
            cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
    .endfor
    
    .for __target in install reinstall clean
    ${__target}: ports-${__target}
    ports-${__target}:
    .for __i in ${PORTS_MODULES}
            @${ECHO} "===> Ports module ${__i} (${__target})"
            cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/(re)?install/deinstall reinstall/}
    .endfor
    .endfor
    .endif
   
   .ORDER: kernel-install modules-install
   
   beforebuild: .PHONY
   kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
   
   kernel-cleandir: kernel-clean kernel-cleandepend
   
   kernel-clobber:
           find . -maxdepth 1 ! -type d ! -name version -delete
   
   kernel-obj:
   
   .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
   modules: modules-all
   
   .if !defined(NO_MODULES_OBJ)
   modules-all modules-depend: modules-obj
   .endif
   .endif
   
   .if !defined(DEBUG)
   FULLKERNEL=     ${KERNEL_KO}
   .else
   FULLKERNEL=     ${KERNEL_KO}.full
   ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
           ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
               ${FULLKERNEL} ${.TARGET}
   ${KERNEL_KO}.debug: ${FULLKERNEL}
           ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
   install.debug reinstall.debug: gdbinit
           cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
   
   # Install gdbinit files for kernel debugging.
   gdbinit:
           grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
               sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
           cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
   .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
           cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
               ${.CURDIR}/gdbinit.machine
   .endif
   .endif
   
   ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
           @rm -f ${.TARGET}
           @echo linking ${.TARGET}
           ${SYSTEM_LD}
   .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
           @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
   .endif
   .if ${MK_CTF} != "no"
           @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
           @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
   .endif
   .if !defined(DEBUG)
           ${OBJCOPY} --strip-debug ${.TARGET}
   .endif
           ${SYSTEM_LD_TAIL}
   
   OBJS_DEPEND_GUESS+=     offset.inc assym.inc vnode_if.h ${BEFORE_DEPEND:M*.h} \
                           ${MFILES:T:S/.m$/.h/}
   
   .for mfile in ${MFILES}
   # XXX the low quality .m.o rules gnerated by config are normally used
   # instead of the .m.c rules here.
   ${mfile:T:S/.m$/.c/}: ${mfile}
           ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
   ${mfile:T:S/.m$/.h/}: ${mfile}
           ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
   .endfor
   
   kernel-clean:
           rm -f *.o *.so *.pico *.ko *.s eddep errs \
               ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
               tags vers.c \
               vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
               ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
               ${CLEAN}
   
   # This is a hack.  BFD "optimizes" away dynamic mode if there are no
   # dynamic references.  We could probably do a '-Bforcedynamic' mode like
   # in the a.out ld.  For now, this works.
   HACK_EXTRA_FLAGS?= -shared
   hack.pico: Makefile
           :> hack.c
           ${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
           rm -f hack.c
   
   offset.inc: $S/kern/genoffset.sh genoffset.o
           NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genoffset.sh genoffset.o > ${.TARGET}
   
   genoffset.o: $S/kern/genoffset.c
           ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/kern/genoffset.c
   
   # genoffset_test.o is not actually used for anything - the point of compiling it
   # is to exercise the CTASSERT that checks that the offsets in the offset.inc
   # _lite struct(s) match those in the original(s). 
   genoffset_test.o: $S/kern/genoffset.c offset.inc
           ${CC} -c ${CFLAGS:N-flto:N-fno-common} -DOFFSET_TEST \
               $S/kern/genoffset.c -o ${.TARGET}
   
   assym.inc: $S/kern/genassym.sh genassym.o genoffset_test.o
           NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
   
   genassym.o: $S/$M/$M/genassym.c  offset.inc
           ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/$M/$M/genassym.c
   
   OBJS_DEPEND_GUESS+= opt_global.h
   genoffset.o genassym.o vers.o: opt_global.h
   
   .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
   _meta_filemon=  1
   .endif
   # Skip reading .depend when not needed to speed up tree-walks and simple
   # lookups.  For install, only do this if no other targets are specified.
   # Also skip generating or including .depend.* files if in meta+filemon mode
   # since it will track dependencies itself.  OBJS_DEPEND_GUESS is still used
   # for _meta_filemon but not for _SKIP_DEPEND.
   .if !defined(NO_SKIP_DEPEND) && \
       ((!empty(.MAKEFLAGS:M-V) && empty(.MAKEFLAGS:M*DEP*)) || \
       ${.TARGETS:M*obj} == ${.TARGETS} || \
       ${.TARGETS:M*clean*} == ${.TARGETS} || \
       ${.TARGETS:M*install*} == ${.TARGETS})
   _SKIP_DEPEND=   1
   .endif
   .if defined(_SKIP_DEPEND) || defined(_meta_filemon)
   .MAKE.DEPENDFILE=       /dev/null
   .endif
   
   kernel-depend: .depend
   SRCS=   assym.inc offset.inc vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
           ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
           ${MFILES:T:S/.m$/.h/}
   DEPENDOBJS+=    ${SYSTEM_OBJS} genassym.o genoffset.o genoffset_test.o
   DEPENDOBJS+=    ${CLEAN:M*.o}
   DEPENDFILES=    ${DEPENDOBJS:O:u:C/^/.depend./}
   .if ${MAKE_VERSION} < 20160220
   DEPEND_MP?=     -MP
   .endif
   .if defined(_SKIP_DEPEND)
   # Don't bother reading any .meta files
   ${DEPENDOBJS}:  .NOMETA
   .depend:        .NOMETA
   # Unset these to avoid looping/statting on them later.
   .undef DEPENDOBJS
   .undef DEPENDFILES
   .endif  # defined(_SKIP_DEPEND)
   DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
   DEPEND_CFLAGS+= -MT${.TARGET}
   .if !defined(_meta_filemon)
   .if !empty(DEPEND_CFLAGS)
   # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
   # as those are the only ones we will include.
   DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
   CFLAGS+=        ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
   .endif
   .for __depend_obj in ${DEPENDFILES}
   .if ${MAKE_VERSION} < 20160220
   .sinclude "${.OBJDIR}/${__depend_obj}"
   .else
   .dinclude "${.OBJDIR}/${__depend_obj}"
   .endif
   .endfor
   .endif  # !defined(_meta_filemon)
   
   # Always run 'make depend' to generate dependencies early and to avoid the
   # need for manually running it.  For the kernel this is mostly a NOP since
   # all dependencies are correctly added or accounted for.  This is mostly to
   # ensure downstream uses of kernel-depend are handled.
   beforebuild: kernel-depend
   
   # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
   # For meta+filemon the .meta file is checked for since it is the dependency
   # file used.
   .for __obj in ${DEPENDOBJS:O:u}
   .if defined(_meta_filemon)
   _depfile=       ${.OBJDIR}/${__obj}.meta
   .else
   _depfile=       ${.OBJDIR}/.depend.${__obj}
   .endif
   .if !exists(${_depfile})
   .if ${SYSTEM_OBJS:M${__obj}}
   ${__obj}: ${OBJS_DEPEND_GUESS}
   .endif
   ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
   .elif defined(_meta_filemon)
   # For meta mode we still need to know which file to depend on to avoid
   # ambiguous suffix transformation rules from .PATH.  Meta mode does not
   # use .depend files.  We really only need source files, not headers since
   # they are typically in SRCS/beforebuild already.  For target-specific
   # guesses do include headers though since they may not be in SRCS.
   .if ${SYSTEM_OBJS:M${__obj}}
   ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
   .endif
   ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
   .endif  # !exists(${_depfile})
   .endfor
   
   .NOPATH: .depend ${DEPENDFILES}
   
   .depend: .PRECIOUS ${SRCS}
   
   _ILINKS= machine
   .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
   _ILINKS+= ${MACHINE_CPUARCH}
   .endif
   .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
   _ILINKS+= x86
   .endif
   
   # Ensure that the link exists without depending on it when it exists.
   .for _link in ${_ILINKS}
   .if !exists(${.OBJDIR}/${_link})
   ${SRCS} ${CLEAN:M*.o}: ${_link}
   .endif
   .endfor
   
   ${_ILINKS}:
           @case ${.TARGET} in \
           machine) \
                   path=${S}/${MACHINE}/include ;; \
           *) \
                   path=${S}/${.TARGET}/include ;; \
           esac ; \
           ${ECHO} ${.TARGET} "->" $$path ; \
           ln -fns $$path ${.TARGET}
   
   # .depend needs include links so we remove them only together.
   kernel-cleandepend: .PHONY
           rm -f .depend .depend.* ${_ILINKS}
   
   kernel-tags:
           @[ -f .depend ] || { echo "you must make depend first"; exit 1; }
           sh $S/conf/systags.sh
   
   kernel-install: .PHONY
           @if [ ! -f ${KERNEL_KO} ] ; then \
                   echo "You must build a kernel first." ; \
                   exit 1 ; \
           fi
   .if exists(${DESTDIR}${KODIR})
           -thiskernel=`sysctl -n kern.bootfile` ; \
           if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
                   chflags -R noschg ${DESTDIR}${KODIR} ; \
                   rm -rf ${DESTDIR}${KODIR} ; \
                   rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
           else \
                   if [ -d ${DESTDIR}${KODIR}.old ] ; then \
                           chflags -R noschg ${DESTDIR}${KODIR}.old ; \
                           rm -rf ${DESTDIR}${KODIR}.old ; \
                   fi ; \
                   mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
                   if [ -n "${KERN_DEBUGDIR}" -a \
                        -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
                           rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
                           mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
                   fi ; \
                   sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
           fi
   .endif
           mkdir -p ${DESTDIR}${KODIR}
           ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
   .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
           mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
           ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
   .endif
   .if defined(KERNEL_EXTRA_INSTALL)
           ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
   .endif
   
   
   
   kernel-reinstall:
           @-chflags -R noschg ${DESTDIR}${KODIR}
           ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
   .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
           ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
   .endif
   
   config.o env.o hints.o vers.o vnode_if.o:
           ${NORMAL_C}
           ${NORMAL_CTFCONVERT}
   
   .if ${MK_REPRODUCIBLE_BUILD} != "no"
   REPRO_FLAG="-R"
   .endif
   vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
           MAKE="${MAKE}" sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
   
   vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
           ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
   
   vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
       $S/kern/vnode_if.src
   vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
           ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
   vnode_if_newproto.h:
           ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
   vnode_if_typedef.h:
           ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
   
   .if ${MFS_IMAGE:Uno} != "no"
   .if empty(MD_ROOT_SIZE_CONFIGURED)
   # Generate an object file from the file system image to embed in the kernel
   # via linking. Make sure the contents are in the mfs section and rename the
   # start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
   # respectively.
   embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
           ${OBJCOPY} --input-target binary \
               --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
               --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
               ${MFS_IMAGE} ${.TARGET}
           ${OBJCOPY} \
               --rename-section .data=mfs,contents,alloc,load,readonly,data \
               --redefine-sym \
                   _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
               --redefine-sym \
                   _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
               --redefine-sym \
                   _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
               ${.TARGET}
   .endif
   .endif
   
   # XXX strictly, everything depends on Makefile because changes to ${PROF}
   # only appear there, but we don't handle that.
   
   .include "kern.mk"

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