0e8b3ab348
The build process generates *assym.h using nm from *genassym.o (which is
in turn created from *genassym.c).
When compiling with link-time optimization (LTO) using -flto, .o files
are LLVM bitcode, not ELF objects. This is not usable by genassym.sh,
so remove -flto from those ${CC} invocations.
Submitted by: George Rimar
Reviewed by: dim
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D9659
405 lines
13 KiB
Makefile
405 lines
13 KiB
Makefile
# $FreeBSD$
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# Part of a unified Makefile for building kernels. This part includes all
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# the definitions that need to be after all the % directives except %RULES
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# and ones that act like they are part of %RULES.
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#
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# Most make variables should not be defined in this file. Instead, they
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# should be defined in the kern.pre.mk so that port makefiles can
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# override or augment them.
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# In case the config had a makeoptions DESTDIR...
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.if defined(DESTDIR)
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MKMODULESENV+= DESTDIR="${DESTDIR}"
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.endif
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SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;:tA}
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MKMODULESENV+= KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
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.if defined(CONF_CFLAGS)
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MKMODULESENV+= CONF_CFLAGS="${CONF_CFLAGS}"
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.endif
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.if defined(WITH_CTF)
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MKMODULESENV+= WITH_CTF="${WITH_CTF}"
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.endif
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.if defined(WITH_EXTRA_TCP_STACKS)
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MKMODULESENV+= WITH_EXTRA_TCP_STACKS="${WITH_EXTRA_TCP_STACKS}"
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.endif
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# Allow overriding the kernel debug directory, so kernel and user debug may be
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# installed in different directories. Setting it to "" restores the historical
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# behavior of installing debug files in the kernel directory.
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KERN_DEBUGDIR?= ${DEBUGDIR}
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.MAIN: all
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.for target in all clean cleandepend cleandir clobber depend install \
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obj reinstall tags
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${target}: kernel-${target}
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.if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
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${target}: modules-${target}
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modules-${target}:
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cd $S/modules; ${MKMODULESENV} ${MAKE} \
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${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
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.endif
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.endfor
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# Handle ports (as defined by the user) that build kernel modules
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.if !defined(NO_MODULES) && defined(PORTS_MODULES)
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#
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# The ports tree needs some environment variables defined to match the new kernel
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#
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# Ports search for some dependencies in PATH, so add the location of the installed files
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LOCALBASE?= /usr/local
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# SRC_BASE is how the ports tree refers to the location of the base source files
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.if !defined(SRC_BASE)
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SRC_BASE= ${SYSDIR:H:tA}
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.endif
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# OSVERSION is used by some ports to determine build options
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.if !defined(OSRELDATE)
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# Definition copied from src/Makefile.inc1
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OSRELDATE!= awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
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${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
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.endif
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# Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
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WRKDIRPREFIX?= ${.OBJDIR}
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PORTSMODULESENV=\
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env \
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-u CC \
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-u CXX \
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-u CPP \
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PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
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SRC_BASE=${SRC_BASE} \
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OSVERSION=${OSRELDATE} \
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WRKDIRPREFIX=${WRKDIRPREFIX}
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# The WRKDIR needs to be cleaned before building, and trying to change the target
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# with a :C pattern below results in install -> instclean
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all:
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.for __i in ${PORTS_MODULES}
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@${ECHO} "===> Ports module ${__i} (all)"
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cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean all
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.endfor
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.for __target in install reinstall clean
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${__target}: ports-${__target}
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ports-${__target}:
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.for __i in ${PORTS_MODULES}
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@${ECHO} "===> Ports module ${__i} (${__target})"
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cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/install/deinstall reinstall/:C/reinstall/deinstall reinstall/}
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.endfor
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.endfor
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.endif
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.ORDER: kernel-install modules-install
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beforebuild: .PHONY
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kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
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kernel-cleandir: kernel-clean kernel-cleandepend
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kernel-clobber:
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find . -maxdepth 1 ! -type d ! -name version -delete
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kernel-obj:
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.if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
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modules: modules-all
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.if !defined(NO_MODULES_OBJ)
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modules-all modules-depend: modules-obj
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.endif
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.endif
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.if !defined(DEBUG)
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FULLKERNEL= ${KERNEL_KO}
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.else
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FULLKERNEL= ${KERNEL_KO}.full
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${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
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${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
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${FULLKERNEL} ${.TARGET}
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${KERNEL_KO}.debug: ${FULLKERNEL}
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${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
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install.debug reinstall.debug: gdbinit
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cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
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# Install gdbinit files for kernel debugging.
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gdbinit:
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grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
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sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
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cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
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.if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
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cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
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${.CURDIR}/gdbinit.machine
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.endif
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.endif
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${FULLKERNEL}: ${SYSTEM_DEP} vers.o
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@rm -f ${.TARGET}
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@echo linking ${.TARGET}
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${SYSTEM_LD}
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.if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
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@sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
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.endif
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.if ${MK_CTF} != "no"
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@echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
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@${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
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.endif
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.if !defined(DEBUG)
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${OBJCOPY} --strip-debug ${.TARGET}
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.endif
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${SYSTEM_LD_TAIL}
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OBJS_DEPEND_GUESS+= assym.s vnode_if.h ${BEFORE_DEPEND:M*.h} \
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${MFILES:T:S/.m$/.h/}
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LNFILES= ${CFILES:T:S/.c$/.ln/}
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.for mfile in ${MFILES}
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# XXX the low quality .m.o rules gnerated by config are normally used
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# instead of the .m.c rules here.
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${mfile:T:S/.m$/.c/}: ${mfile}
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${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
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${mfile:T:S/.m$/.h/}: ${mfile}
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${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
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.endfor
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kernel-clean:
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rm -f *.o *.so *.pico *.ko *.s eddep errs \
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${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
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linterrs tags vers.c \
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vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
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${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
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${CLEAN}
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lint: ${LNFILES}
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${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC} 2>&1 | \
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tee -a linterrs
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# This is a hack. BFD "optimizes" away dynamic mode if there are no
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# dynamic references. We could probably do a '-Bforcedynamic' mode like
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# in the a.out ld. For now, this works.
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HACK_EXTRA_FLAGS?= -shared
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hack.pico: Makefile
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:> hack.c
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${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
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rm -f hack.c
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assym.s: $S/kern/genassym.sh genassym.o
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NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
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genassym.o: $S/$M/$M/genassym.c
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${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/$M/$M/genassym.c
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${SYSTEM_OBJS} genassym.o vers.o: opt_global.h
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.if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
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_meta_filemon= 1
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.endif
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# Skip reading .depend when not needed to speed up tree-walks and simple
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# lookups. For install, only do this if no other targets are specified.
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# Also skip generating or including .depend.* files if in meta+filemon mode
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# since it will track dependencies itself. OBJS_DEPEND_GUESS is still used.
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.if !empty(.MAKEFLAGS:M-V${_V_READ_DEPEND}) || make(obj) || make(clean*) || \
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${.TARGETS:M*install*} == ${.TARGETS} || \
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make(kernel-obj) || make(kernel-clean*) || \
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make(kernel-install*) || defined(_meta_filemon)
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_SKIP_READ_DEPEND= 1
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.MAKE.DEPENDFILE= /dev/null
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.endif
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kernel-depend: .depend
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SRCS= assym.s vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
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${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
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${MFILES:T:S/.m$/.h/}
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DEPENDFILES= .depend .depend.*
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DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o
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DEPENDFILES_OBJS= ${DEPENDOBJS:O:u:C/^/.depend./}
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.if ${MAKE_VERSION} < 20160220
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DEPEND_MP?= -MP
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.endif
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DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
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DEPEND_CFLAGS+= -MT${.TARGET}
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.if !defined(_meta_filemon)
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.if defined(.PARSEDIR)
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# Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
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# as those are the only ones we will include.
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DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
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CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
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.else
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CFLAGS+= ${DEPEND_CFLAGS}
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.endif
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.if !defined(_SKIP_READ_DEPEND)
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.for __depend_obj in ${DEPENDFILES_OBJS}
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.if ${MAKE_VERSION} < 20160220
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.sinclude "${.OBJDIR}/${__depend_obj}"
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.else
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.dinclude "${.OBJDIR}/${__depend_obj}"
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.endif
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.endfor
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.endif # !defined(_SKIP_READ_DEPEND)
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.endif # !defined(_meta_filemon)
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# Always run 'make depend' to generate dependencies early and to avoid the
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# need for manually running it. For the kernel this is mostly a NOP since
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# all dependencies are correctly added or accounted for. This is mostly to
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# ensure downstream uses of kernel-depend are handled.
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beforebuild: kernel-depend
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# Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
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# For meta+filemon the .meta file is checked for since it is the dependency
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# file used.
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.for __obj in ${DEPENDOBJS:O:u}
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.if (defined(_meta_filemon) && !exists(${.OBJDIR}/${__obj}.meta)) || \
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(!defined(_meta_filemon) && !exists(${.OBJDIR}/.depend.${__obj}))
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.if ${SYSTEM_OBJS:M${__obj}}
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${__obj}: ${OBJS_DEPEND_GUESS}
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.endif
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${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
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.elif defined(_meta_filemon)
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# For meta mode we still need to know which file to depend on to avoid
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# ambiguous suffix transformation rules from .PATH. Meta mode does not
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# use .depend files. We really only need source files, not headers since
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# they are typically in SRCS/beforebuild already. For target-specific
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# guesses do include headers though since they may not be in SRCS.
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.if ${SYSTEM_OBJS:M${__obj}}
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${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
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.endif
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${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
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.endif
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.endfor
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.NOPATH: .depend ${DEPENDFILES_OBJS}
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.depend: .PRECIOUS ${SRCS}
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_ILINKS= machine
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.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
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_ILINKS+= ${MACHINE_CPUARCH}
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.endif
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.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
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_ILINKS+= x86
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.endif
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# Ensure that the link exists without depending on it when it exists.
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.for _link in ${_ILINKS}
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.if !exists(${.OBJDIR}/${_link})
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${SRCS} ${CLEAN:M*.o}: ${_link}
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.endif
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.endfor
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${_ILINKS}:
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@case ${.TARGET} in \
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machine) \
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path=${S}/${MACHINE}/include ;; \
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*) \
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path=${S}/${.TARGET}/include ;; \
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esac ; \
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${ECHO} ${.TARGET} "->" $$path ; \
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ln -fhs $$path ${.TARGET}
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# .depend needs include links so we remove them only together.
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kernel-cleandepend: .PHONY
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rm -f ${DEPENDFILES} ${_ILINKS}
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kernel-tags:
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@[ -f .depend ] || { echo "you must make depend first"; exit 1; }
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sh $S/conf/systags.sh
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kernel-install: .PHONY
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@if [ ! -f ${KERNEL_KO} ] ; then \
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echo "You must build a kernel first." ; \
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exit 1 ; \
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fi
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.if exists(${DESTDIR}${KODIR})
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-thiskernel=`sysctl -n kern.bootfile` ; \
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if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
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chflags -R noschg ${DESTDIR}${KODIR} ; \
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rm -rf ${DESTDIR}${KODIR} ; \
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rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
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else \
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if [ -d ${DESTDIR}${KODIR}.old ] ; then \
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chflags -R noschg ${DESTDIR}${KODIR}.old ; \
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rm -rf ${DESTDIR}${KODIR}.old ; \
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fi ; \
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mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
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if [ -n "${KERN_DEBUGDIR}" -a \
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-d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
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rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
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mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
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fi ; \
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sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
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fi
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.endif
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mkdir -p ${DESTDIR}${KODIR}
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${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
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.if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
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mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
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${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
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.endif
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.if defined(KERNEL_EXTRA_INSTALL)
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${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
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.endif
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kernel-reinstall:
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@-chflags -R noschg ${DESTDIR}${KODIR}
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${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
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.if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
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${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
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.endif
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config.o env.o hints.o vers.o vnode_if.o:
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${NORMAL_C}
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${NORMAL_CTFCONVERT}
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config.ln env.ln hints.ln vers.ln vnode_if.ln:
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${NORMAL_LINT}
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.if ${MK_REPRODUCIBLE_BUILD} != "no"
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REPRO_FLAG="-r"
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.endif
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vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
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MAKE=${MAKE} sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
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vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
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${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
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vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
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$S/kern/vnode_if.src
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vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
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${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
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vnode_if_newproto.h:
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${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
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vnode_if_typedef.h:
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${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
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.if ${MFS_IMAGE:Uno} != "no"
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.if empty(MD_ROOT_SIZE_CONFIGURED)
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# Generate an object file from the file system image to embed in the kernel
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# via linking. Make sure the contents are in the mfs section and rename the
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# start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
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# respectively.
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embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
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${OBJCOPY} --input-target binary \
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--output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
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--binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
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${MFS_IMAGE} ${.TARGET}
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${OBJCOPY} \
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--rename-section .data=mfs,contents,alloc,load,readonly,data \
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--redefine-sym \
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_binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
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--redefine-sym \
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_binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
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--redefine-sym \
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_binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
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${.TARGET}
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.endif
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.endif
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# XXX strictly, everything depends on Makefile because changes to ${PROF}
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# only appear there, but we don't handle that.
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.include "kern.mk"
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