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.
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.
11 .if defined(DTS) || defined(DTSO) || defined(FDT_DTS_FILE)
12 .include "dtb.build.mk"
14 KERNEL_EXTRA+= ${DTB} ${DTBO}
15 CLEAN+= ${DTB} ${DTBO}
17 kernel-install: _dtbinstall
18 .ORDER: beforeinstall _dtbinstall
21 # In case the config had a makeoptions DESTDIR...
23 MKMODULESENV+= DESTDIR="${DESTDIR}"
25 SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;:tA}
26 MKMODULESENV+= KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
27 MKMODULESENV+= MODULE_TIED=yes
29 .if defined(CONF_CFLAGS)
30 MKMODULESENV+= CONF_CFLAGS="${CONF_CFLAGS}"
34 MKMODULESENV+= WITH_CTF="${WITH_CTF}"
37 .if defined(WITH_EXTRA_TCP_STACKS)
38 MKMODULESENV+= WITH_EXTRA_TCP_STACKS="${WITH_EXTRA_TCP_STACKS}"
41 .if defined(KCSAN_ENABLED)
42 MKMODULESENV+= KCSAN_ENABLED="yes"
45 .if defined(SAN_CFLAGS)
46 MKMODULESENV+= SAN_CFLAGS="${SAN_CFLAGS}"
49 .if defined(GCOV_CFLAGS)
50 MKMODULESENV+= GCOV_CFLAGS="${GCOV_CFLAGS}"
53 .if !empty(COMPAT_FREEBSD32_ENABLED)
54 MKMODULESENV+= COMPAT_FREEBSD32_ENABLED="yes"
57 # Allow overriding the kernel debug directory, so kernel and user debug may be
58 # installed in different directories. Setting it to "" restores the historical
59 # behavior of installing debug files in the kernel directory.
60 KERN_DEBUGDIR?= ${DEBUGDIR}
64 .if !defined(NO_MODULES)
65 # Default prefix used for modules installed from ports
66 LOCALBASE?= /usr/local
68 LOCAL_MODULES_DIR?= ${LOCALBASE}/sys/modules
70 # Default to installing all modules installed by ports unless overridden
72 .if !defined(LOCAL_MODULES) && exists(${LOCAL_MODULES_DIR})
73 LOCAL_MODULES!= ls ${LOCAL_MODULES_DIR}
77 .for target in all clean cleandepend cleandir clobber depend install \
78 ${_obj} reinstall tags
79 ${target}: kernel-${target}
80 .if !defined(NO_MODULES)
81 ${target}: modules-${target}
83 .if !defined(MODULES_WITH_WORLD) && exists($S/modules)
84 cd $S/modules; ${MKMODULESENV} ${MAKE} \
85 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
87 .for module in ${LOCAL_MODULES}
88 @${ECHODIR} "===> ${module} (${target:S/^reinstall$/install/:S/^clobber$/cleandir/})"
89 @cd ${LOCAL_MODULES_DIR}/${module}; ${MKMODULESENV} ${MAKE} \
90 DIRPRFX="${module}/" \
91 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
96 # Handle ports (as defined by the user) that build kernel modules
97 .if !defined(NO_MODULES) && defined(PORTS_MODULES)
99 # The ports tree needs some environment variables defined to match the new kernel
101 # SRC_BASE is how the ports tree refers to the location of the base source files
102 .if !defined(SRC_BASE)
103 SRC_BASE= ${SYSDIR:H:tA}
105 # OSVERSION is used by some ports to determine build options
106 .if !defined(OSRELDATE)
107 # Definition copied from src/Makefile.inc1
108 OSRELDATE!= awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
109 ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
111 # Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
113 # Ports search for some dependencies in PATH, so add the location of the
115 WRKDIRPREFIX?= ${.OBJDIR}
124 MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
126 PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
127 SRC_BASE=${SRC_BASE} \
128 OSVERSION=${OSRELDATE} \
129 WRKDIRPREFIX=${WRKDIRPREFIX}
131 # The WRKDIR needs to be cleaned before building, and trying to change the target
132 # with a :C pattern below results in install -> instclean
134 .for __i in ${PORTS_MODULES}
135 @${ECHO} "===> Ports module ${__i} (all)"
136 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
139 .for __target in install reinstall clean
140 ${__target}: ports-${__target}
142 .for __i in ${PORTS_MODULES}
143 @${ECHO} "===> Ports module ${__i} (${__target})"
144 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/(re)?install/deinstall reinstall/}
149 .ORDER: kernel-install modules-install
152 kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
154 kernel-cleandir: kernel-clean kernel-cleandepend
157 find . -maxdepth 1 ! -type d ! -name version -delete
161 .if !defined(NO_MODULES)
163 modules-depend: beforebuild
164 modules-all: beforebuild
166 .if !defined(NO_MODULES_OBJ)
167 modules-all modules-depend: modules-obj
172 FULLKERNEL= ${KERNEL_KO}
174 FULLKERNEL= ${KERNEL_KO}.full
175 ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
176 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
177 ${FULLKERNEL} ${.TARGET}
178 ${KERNEL_KO}.debug: ${FULLKERNEL}
179 ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
180 install.debug reinstall.debug: gdbinit
181 cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
183 # Install gdbinit files for kernel debugging.
185 grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
186 sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
187 cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
188 .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
189 cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
190 ${.CURDIR}/gdbinit.machine
194 ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
196 @echo linking ${.TARGET}
198 .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
199 @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
201 .if ${MK_CTF} != "no"
202 @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
203 @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
206 ${OBJCOPY} --strip-debug ${.TARGET}
210 OBJS_DEPEND_GUESS+= offset.inc assym.inc vnode_if.h ${BEFORE_DEPEND:M*.h} \
211 ${MFILES:T:S/.m$/.h/}
213 .for mfile in ${MFILES}
214 # XXX the low quality .m.o rules gnerated by config are normally used
215 # instead of the .m.c rules here.
216 ${mfile:T:S/.m$/.c/}: ${mfile}
217 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
218 ${mfile:T:S/.m$/.h/}: ${mfile}
219 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
223 rm -f *.o *.so *.pico *.ko *.s eddep errs \
224 ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
226 vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
227 ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
230 # This is a hack. BFD "optimizes" away dynamic mode if there are no
231 # dynamic references. We could probably do a '-Bforcedynamic' mode like
232 # in the a.out ld. For now, this works.
235 ${CC} ${CCLDFLAGS} -shared ${CFLAGS} -nostdlib hack.c -o hack.pico
238 offset.inc: $S/kern/genoffset.sh genoffset.o
239 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genoffset.sh genoffset.o > ${.TARGET}
241 genoffset.o: $S/kern/genoffset.c
242 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon $S/kern/genoffset.c
244 # genoffset_test.o is not actually used for anything - the point of compiling it
245 # is to exercise the CTASSERT that checks that the offsets in the offset.inc
246 # _lite struct(s) match those in the original(s).
247 genoffset_test.o: $S/kern/genoffset.c offset.inc
248 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon -DOFFSET_TEST \
249 $S/kern/genoffset.c -o ${.TARGET}
251 assym.inc: $S/kern/genassym.sh genassym.o genoffset_test.o
252 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
254 genassym.o: $S/$M/$M/genassym.c offset.inc
255 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon $S/$M/$M/genassym.c
257 OBJS_DEPEND_GUESS+= opt_global.h
258 genoffset.o genassym.o vers.o: opt_global.h
260 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
263 # Skip reading .depend when not needed to speed up tree-walks and simple
264 # lookups. For install, only do this if no other targets are specified.
265 # Also skip generating or including .depend.* files if in meta+filemon mode
266 # since it will track dependencies itself. OBJS_DEPEND_GUESS is still used
267 # for _meta_filemon but not for _SKIP_DEPEND.
268 .if !defined(NO_SKIP_DEPEND) && \
269 ((!empty(.MAKEFLAGS:M-V) && empty(.MAKEFLAGS:M*DEP*)) || \
270 ${.TARGETS:M*obj} == ${.TARGETS} || \
271 ${.TARGETS:M*clean*} == ${.TARGETS} || \
272 ${.TARGETS:M*install*} == ${.TARGETS})
275 .if defined(_SKIP_DEPEND) || defined(_meta_filemon)
276 .MAKE.DEPENDFILE= /dev/null
279 kernel-depend: .depend
280 SRCS= assym.inc offset.inc vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
281 ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
282 ${MFILES:T:S/.m$/.h/}
283 DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o genoffset.o genoffset_test.o
284 DEPENDOBJS+= ${CLEAN:M*.o}
285 DEPENDFILES= ${DEPENDOBJS:O:u:C/^/.depend./}
286 .if ${MAKE_VERSION} < 20160220
289 .if defined(_SKIP_DEPEND)
290 # Don't bother reading any .meta files
291 ${DEPENDOBJS}: .NOMETA
293 # Unset these to avoid looping/statting on them later.
296 .endif # defined(_SKIP_DEPEND)
297 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
298 DEPEND_CFLAGS+= -MT${.TARGET}
299 .if !defined(_meta_filemon)
300 .if !empty(DEPEND_CFLAGS)
301 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
302 # as those are the only ones we will include.
303 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
304 CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
306 .for __depend_obj in ${DEPENDFILES}
307 .if ${MAKE_VERSION} < 20160220
308 .sinclude "${.OBJDIR}/${__depend_obj}"
310 .dinclude "${.OBJDIR}/${__depend_obj}"
313 .endif # !defined(_meta_filemon)
315 # Always run 'make depend' to generate dependencies early and to avoid the
316 # need for manually running it. For the kernel this is mostly a NOP since
317 # all dependencies are correctly added or accounted for. This is mostly to
318 # ensure downstream uses of kernel-depend are handled.
319 beforebuild: kernel-depend
321 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
322 # For meta+filemon the .meta file is checked for since it is the dependency
324 .for __obj in ${DEPENDOBJS:O:u}
325 .if defined(_meta_filemon)
326 _depfile= ${.OBJDIR}/${__obj}.meta
328 _depfile= ${.OBJDIR}/.depend.${__obj}
330 .if !exists(${_depfile})
331 .if ${SYSTEM_OBJS:M${__obj}}
332 ${__obj}: ${OBJS_DEPEND_GUESS}
334 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
335 .elif defined(_meta_filemon)
336 # For meta mode we still need to know which file to depend on to avoid
337 # ambiguous suffix transformation rules from .PATH. Meta mode does not
338 # use .depend files. We really only need source files, not headers since
339 # they are typically in SRCS/beforebuild already. For target-specific
340 # guesses do include headers though since they may not be in SRCS.
341 .if ${SYSTEM_OBJS:M${__obj}}
342 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
344 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
345 .endif # !exists(${_depfile})
348 .NOPATH: .depend ${DEPENDFILES}
350 .depend: .PRECIOUS ${SRCS}
352 _MAP_DEBUG_PREFIX= yes
355 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
356 _ILINKS+= ${MACHINE_CPUARCH}
358 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
362 # Ensure that the link exists without depending on it when it exists.
363 # Ensure that debug info references the path in the source tree.
364 .for _link in ${_ILINKS}
365 .if !exists(${.OBJDIR}/${_link})
366 ${SRCS} ${DEPENDOBJS}: ${_link}
368 .if defined(_MAP_DEBUG_PREFIX)
369 .if ${_link} == "machine"
370 CFLAGS+= -fdebug-prefix-map=./machine=${SYSDIR}/${MACHINE}/include
372 CFLAGS+= -fdebug-prefix-map=./${_link}=${SYSDIR}/${_link}/include
378 @case ${.TARGET} in \
380 path=${S}/${MACHINE}/include ;; \
382 path=${S}/${.TARGET}/include ;; \
384 ${ECHO} ${.TARGET} "->" $$path ; \
385 ln -fns $$path ${.TARGET}
387 # .depend needs include links so we remove them only together.
388 kernel-cleandepend: .PHONY
389 rm -f .depend .depend.* ${_ILINKS}
392 @ls .depend.* > /dev/null 2>&1 || \
393 { echo "you must make all first"; exit 1; }
394 sh $S/conf/systags.sh
396 kernel-install: .PHONY
397 @if [ ! -f ${KERNEL_KO} ] ; then \
398 echo "You must build a kernel first." ; \
401 .if exists(${DESTDIR}${KODIR})
402 -thiskernel=`sysctl -n kern.bootfile || echo /boot/kernel/kernel` ; \
403 if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
404 chflags -R noschg ${DESTDIR}${KODIR} ; \
405 rm -rf ${DESTDIR}${KODIR} ; \
406 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
408 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
409 chflags -R noschg ${DESTDIR}${KODIR}.old ; \
410 rm -rf ${DESTDIR}${KODIR}.old ; \
412 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
413 if [ -n "${KERN_DEBUGDIR}" -a \
414 -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
415 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
416 mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
418 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
421 mkdir -p ${DESTDIR}${KODIR}
422 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
423 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
424 mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
425 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
427 .if defined(KERNEL_EXTRA_INSTALL)
428 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
434 @-chflags -R noschg ${DESTDIR}${KODIR}
435 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
436 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
437 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
440 config.o env.o hints.o vers.o vnode_if.o:
444 .if ${MK_REPRODUCIBLE_BUILD} != "no"
447 vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
448 MAKE="${MAKE}" sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
450 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
451 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
453 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
455 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
456 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
458 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
460 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
462 .if ${MFS_IMAGE:Uno} != "no"
463 .if empty(MD_ROOT_SIZE_CONFIGURED)
464 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE} $S/dev/md/embedfs.S
465 ${CC} ${CFLAGS} ${ACFLAGS} -DMFS_IMAGE="${MFS_IMAGE}" -c \
466 $S/dev/md/embedfs.S -o ${.TARGET}
470 # XXX strictly, everything depends on Makefile because changes to ${PROF}
471 # only appear there, but we don't handle that.