freebsd-skq/sys/conf/kern.post.mk
kevans d36c815c78 Allow kernel config to specify DTS/DTSO to build, and out-of-tree support
This allows for directives such as

makeoptions DTS+=/out/of/tree/myboard.dts
# in tree! Same rules applied as if this were in a dtb/ module
makeoptions DTS+=otherboard.dts

to be specified in config(5) and have these built/installed alongside th
kernel. The assumption that overlays live in an overlays/ directory is only
made for in-tree DTSO, but we still make the assumption that out-of-tree
arm64 DTS will be in vendored directories (for now).

This lowers the cost to hacking on an overlay or dts by being able to
quickly throw it in a custom config, especially if it doesn't fit one of the
current dtb/modules quite appropriately or it's not intended for commit
there.

The build/install targets were split out of dtb.mk to centralize the build
logic and leave out the all/realinstall/CLEANFILES additions... it was
believed that we didn't want to pollute the kernel build with these.

The build rules were converted to suffix rules at the suggestion of Ian to
clean things up a little bit in a world where we can have mixed
in-tree/out-of-tree DTS/DTSO specified.

Reviewed by:	ian
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D19351
2019-03-26 02:45:23 +00:00

487 lines
16 KiB
Makefile

# $FreeBSD$
# 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.
.if defined(DTS) || defined(DTSO)
.include "dtb.build.mk"
KERNEL_EXTRA+= ${DTB} ${DTBO}
CLEAN+= ${DTB} ${DTBO}
kernel-install: _dtbinstall
.ORDER: beforeinstall _dtbinstall
.endif
# In case the config had a makeoptions DESTDIR...
.if defined(DESTDIR)
MKMODULESENV+= DESTDIR="${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="${WITH_EXTRA_TCP_STACKS}"
.endif
.if defined(SAN_CFLAGS)
MKMODULESENV+= SAN_CFLAGS="${SAN_CFLAGS}"
.endif
.if defined(GCOV_CFLAGS)
MKMODULESENV+= GCOV_CFLAGS="${GCOV_CFLAGS}"
.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
.if !defined(NO_MODULES)
# Default prefix used for modules installed from ports
LOCALBASE?= /usr/local
LOCAL_MODULES_DIR?= ${LOCALBASE}/sys/modules
# Default to installing all modules installed by ports unless overridden
# by the user.
.if !defined(LOCAL_MODULES) && exists($LOCAL_MODULES_DIR)
LOCAL_MODULES!= ls ${LOCAL_MODULES_DIR}
.endif
.endif
.for target in all clean cleandepend cleandir clobber depend install \
${_obj} reinstall tags
${target}: kernel-${target}
.if !defined(NO_MODULES)
${target}: modules-${target}
modules-${target}:
.if !defined(MODULES_WITH_WORLD) && exists($S/modules)
cd $S/modules; ${MKMODULESENV} ${MAKE} \
${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
.endif
.for module in ${LOCAL_MODULES}
cd ${LOCAL_MODULES_DIR}/${module}; ${MKMODULESENV} ${MAKE} \
${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
.endfor
.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
#
# 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 $$3 }' \
${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
.endif
# Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
#
# Ports search for some dependencies in PATH, so add the location of the
# installed files
WRKDIRPREFIX?= ${.OBJDIR}
PORTSMODULESENV=\
env \
-u CC \
-u CXX \
-u CPP \
-u MAKESYSPATH \
-u MK_AUTO_OBJ \
-u MAKEOBJDIR \
MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
SYSDIR=${SYSDIR} \
PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
SRC_BASE=${SRC_BASE} \
OSVERSION=${OSRELDATE} \
WRKDIRPREFIX=${WRKDIRPREFIX}
# The WRKDIR needs to be cleaned before building, and trying to change the target
# with a :C pattern below results in install -> instclean
all:
.for __i in ${PORTS_MODULES}
@${ECHO} "===> Ports module ${__i} (all)"
cd $${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(NO_MODULES)
modules: modules-all
modules-depend: beforebuild
modules-all: beforebuild
.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}
.if ${COMPILER_TYPE} == "clang" || \
(${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 60000)
_MAP_DEBUG_PREFIX= yes
.endif
_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.
# Ensure that debug info references the path in the source tree.
.for _link in ${_ILINKS}
.if !exists(${.OBJDIR}/${_link})
${SRCS} ${CLEAN:M*.o}: ${_link}
.endif
.if defined(_MAP_DEBUG_PREFIX)
.if ${_link} == "machine"
CFLAGS+= -fdebug-prefix-map=./machine=${SYSDIR}/${MACHINE}/include
.else
CFLAGS+= -fdebug-prefix-map=./${_link}=${SYSDIR}/${_link}/include
.endif
.endif
.endfor
.if defined(_MAP_DEBUG_PREFIX)
# Ensure that DWARF info contains a full path for auto-generated headers.
CFLAGS+= -fdebug-prefix-map=.=${.OBJDIR}
.endif
${_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"