2 # Part of a unified Makefile for building kernels. This part includes all
3 # the definitions that need to be after all the % directives except %RULES
4 # and ones that act like they are part of %RULES.
6 # Most make variables should not be defined in this file. Instead, they
7 # should be defined in the kern.pre.mk so that port makefiles can
8 # override or augment them.
10 .if defined(DTS) || defined(DTSO) || defined(FDT_DTS_FILE)
11 .include "dtb.build.mk"
13 KERNEL_EXTRA+= ${DTB} ${DTBO}
14 CLEAN+= ${DTB} ${DTBO}
16 kernel-install: _dtbinstall
17 .ORDER: beforeinstall _dtbinstall
20 # In case the config had a makeoptions DESTDIR...
22 MKMODULESENV+= DESTDIR="${DESTDIR}"
24 SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;:tA}
25 MKMODULESENV+= KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
26 MKMODULESENV+= MODULE_TIED=yes
28 .if defined(CONF_CFLAGS)
29 MKMODULESENV+= CONF_CFLAGS="${CONF_CFLAGS}"
33 MKMODULESENV+= WITH_CTF="${WITH_CTF}"
36 .if !empty(KCSAN_ENABLED)
37 MKMODULESENV+= KCSAN_ENABLED="yes"
40 .if defined(SAN_CFLAGS)
41 MKMODULESENV+= SAN_CFLAGS="${SAN_CFLAGS}"
44 .if defined(GCOV_CFLAGS)
45 MKMODULESENV+= GCOV_CFLAGS="${GCOV_CFLAGS}"
48 .if !empty(COMPAT_FREEBSD32_ENABLED)
49 MKMODULESENV+= COMPAT_FREEBSD32_ENABLED="yes"
52 # Allow overriding the kernel debug directory, so kernel and user debug may be
53 # installed in different directories. Setting it to "" restores the historical
54 # behavior of installing debug files in the kernel directory.
55 KERN_DEBUGDIR?= ${DEBUGDIR}
59 .if !defined(NO_MODULES)
60 # Default prefix used for modules installed from ports
61 LOCALBASE?= /usr/local
63 LOCAL_MODULES_DIR?= ${LOCALBASE}/sys/modules
65 # Default to installing all modules installed by ports unless overridden
67 .if !defined(LOCAL_MODULES) && exists(${LOCAL_MODULES_DIR})
68 LOCAL_MODULES!= ls ${LOCAL_MODULES_DIR}
72 .for target in all clean cleandepend cleandir clobber depend install \
73 ${_obj} reinstall tags
74 ${target}: kernel-${target}
75 .if !defined(NO_MODULES)
76 ${target}: modules-${target}
78 .if !defined(MODULES_WITH_WORLD) && exists($S/modules)
79 cd $S/modules; ${MKMODULESENV} ${MAKE} \
80 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
82 .for module in ${LOCAL_MODULES}
83 @${ECHODIR} "===> ${module} (${target:S/^reinstall$/install/:S/^clobber$/cleandir/})"
84 @cd ${LOCAL_MODULES_DIR}/${module}; ${MKMODULESENV} ${MAKE} \
85 DIRPRFX="${module}/" \
86 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
91 # Handle ports (as defined by the user) that build kernel modules
92 .if !defined(NO_MODULES) && defined(PORTS_MODULES)
94 # The ports tree needs some environment variables defined to match the new kernel
96 # SRC_BASE is how the ports tree refers to the location of the base source files
97 .if !defined(SRC_BASE)
98 SRC_BASE= ${SYSDIR:H:tA}
100 # OSVERSION is used by some ports to determine build options
101 .if !defined(OSRELDATE)
102 # Definition copied from src/Makefile.inc1
103 OSRELDATE!= awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
104 ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
106 # Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
108 # Ports search for some dependencies in PATH, so add the location of the
110 WRKDIRPREFIX?= ${.OBJDIR}
119 MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
121 PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
122 SRC_BASE=${SRC_BASE} \
123 OSVERSION=${OSRELDATE} \
124 WRKDIRPREFIX=${WRKDIRPREFIX}
126 # The WRKDIR needs to be cleaned before building, and trying to change the target
127 # with a :C pattern below results in install -> instclean
129 .for __i in ${PORTS_MODULES}
130 @${ECHO} "===> Ports module ${__i} (all)"
131 cd ${PORTSDIR:U/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
134 .for __target in install reinstall clean
135 ${__target}: ports-${__target}
137 .for __i in ${PORTS_MODULES}
138 @${ECHO} "===> Ports module ${__i} (${__target})"
139 cd ${PORTSDIR:U/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/(re)?install/deinstall reinstall/}
144 .ORDER: kernel-install modules-install
147 kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
149 kernel-cleandir: kernel-clean kernel-cleandepend
152 find . -maxdepth 1 ! -type d ! -name version -delete
156 .if !defined(NO_MODULES)
158 modules-depend: beforebuild
159 modules-all: beforebuild
161 .if !defined(NO_MODULES_OBJ)
162 modules-all modules-depend: modules-obj
167 FULLKERNEL= ${KERNEL_KO}
169 FULLKERNEL= ${KERNEL_KO}.full
170 ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
171 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
172 ${FULLKERNEL} ${.TARGET}
173 ${KERNEL_KO}.debug: ${FULLKERNEL}
174 ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
175 install.debug reinstall.debug: gdbinit
176 cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
178 # Install gdbinit files for kernel debugging.
180 grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
181 sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
182 cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
183 .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
184 cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
185 ${.CURDIR}/gdbinit.machine
189 ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
191 @echo linking ${.TARGET}
193 .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
194 @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
196 .if ${MK_CTF} != "no"
197 @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
198 @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
201 ${OBJCOPY} --strip-debug ${.TARGET}
205 OBJS_DEPEND_GUESS+= offset.inc assym.inc vnode_if.h ${BEFORE_DEPEND:M*.h} \
206 ${MFILES:T:S/.m$/.h/}
208 .for mfile in ${MFILES}
209 # XXX the low quality .m.o rules gnerated by config are normally used
210 # instead of the .m.c rules here.
211 ${mfile:T:S/.m$/.c/}: ${mfile}
212 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
213 ${mfile:T:S/.m$/.h/}: ${mfile}
214 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
218 rm -f *.o *.so *.pico *.ko *.s eddep errs \
219 ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
221 vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
222 ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
225 # This is a hack. BFD "optimizes" away dynamic mode if there are no
226 # dynamic references. We could probably do a '-Bforcedynamic' mode like
227 # in the a.out ld. For now, this works.
228 force-dynamic-hack.c:
231 force-dynamic-hack.pico: force-dynamic-hack.c Makefile
232 ${CC} ${CCLDFLAGS} -shared ${CFLAGS} -nostdlib \
233 force-dynamic-hack.c -o ${.TARGET}
235 offset.inc: $S/kern/genoffset.sh genoffset.o
236 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genoffset.sh genoffset.o > ${.TARGET}
238 genoffset.o: $S/kern/genoffset.c
239 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon $S/kern/genoffset.c
241 # genoffset_test.o is not actually used for anything - the point of compiling it
242 # is to exercise the CTASSERT that checks that the offsets in the offset.inc
243 # _lite struct(s) match those in the original(s).
244 genoffset_test.o: $S/kern/genoffset.c offset.inc
245 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon -DOFFSET_TEST \
246 $S/kern/genoffset.c -o ${.TARGET}
248 assym.inc: $S/kern/genassym.sh genassym.o genoffset_test.o
249 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
251 genassym.o: $S/$M/$M/genassym.c offset.inc
252 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon $S/$M/$M/genassym.c
254 OBJS_DEPEND_GUESS+= opt_global.h
255 genoffset.o genassym.o vers.o: opt_global.h
257 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
260 .if ${MK_DIRDEPS_BUILD} == "no"
261 # Skip reading .depend when not needed to speed up tree-walks and simple
262 # lookups. For install, only do this if no other targets are specified.
263 # Also skip generating or including .depend.* files if in meta+filemon mode
264 # since it will track dependencies itself. OBJS_DEPEND_GUESS is still used
265 # for _meta_filemon but not for _SKIP_DEPEND.
266 .if !defined(NO_SKIP_DEPEND) && \
267 ((!empty(.MAKEFLAGS:M-V) && empty(.MAKEFLAGS:M*DEP*)) || \
268 ${.TARGETS:M*obj} == ${.TARGETS} || \
269 ${.TARGETS:M*clean*} == ${.TARGETS} || \
270 ${.TARGETS:M*install*} == ${.TARGETS})
273 .if defined(_SKIP_DEPEND) || defined(_meta_filemon)
274 .MAKE.DEPENDFILE= /dev/null
278 kernel-depend: .depend
279 SRCS= assym.inc offset.inc vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
280 ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
281 ${MFILES:T:S/.m$/.h/}
282 DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o genoffset.o genoffset_test.o
283 DEPENDOBJS+= ${CLEAN:M*.o}
284 DEPENDFILES= ${DEPENDOBJS:O:u:C/^/.depend./}
285 .if ${MAKE_VERSION} < 20160220
288 .if defined(_SKIP_DEPEND)
289 # Don't bother reading any .meta files
290 ${DEPENDOBJS}: .NOMETA
292 # Unset these to avoid looping/statting on them later.
295 .endif # defined(_SKIP_DEPEND)
296 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
297 DEPEND_CFLAGS+= -MT${.TARGET}
298 .if !defined(_meta_filemon)
299 .if !empty(DEPEND_CFLAGS)
300 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
301 # as those are the only ones we will include.
302 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
303 CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
305 .for __depend_obj in ${DEPENDFILES}
306 .if ${MAKE_VERSION} < 20160220
307 .sinclude "${.OBJDIR}/${__depend_obj}"
309 .dinclude "${.OBJDIR}/${__depend_obj}"
312 .endif # !defined(_meta_filemon)
314 # Always run 'make depend' to generate dependencies early and to avoid the
315 # need for manually running it. For the kernel this is mostly a NOP since
316 # all dependencies are correctly added or accounted for. This is mostly to
317 # ensure downstream uses of kernel-depend are handled.
318 beforebuild: kernel-depend
320 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
321 # For meta+filemon the .meta file is checked for since it is the dependency
323 .for __obj in ${DEPENDOBJS:O:u}
324 .if defined(_meta_filemon)
325 _depfile= ${.OBJDIR}/${__obj}.meta
327 _depfile= ${.OBJDIR}/.depend.${__obj}
329 .if !exists(${_depfile})
330 .if ${SYSTEM_OBJS:M${__obj}}
331 ${__obj}: ${OBJS_DEPEND_GUESS}
333 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
334 .elif defined(_meta_filemon)
335 # For meta mode we still need to know which file to depend on to avoid
336 # ambiguous suffix transformation rules from .PATH. Meta mode does not
337 # use .depend files. We really only need source files, not headers since
338 # they are typically in SRCS/beforebuild already. For target-specific
339 # guesses do include headers though since they may not be in SRCS.
340 .if ${SYSTEM_OBJS:M${__obj}}
341 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
343 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
344 .endif # !exists(${_depfile})
347 .NOPATH: .depend ${DEPENDFILES}
349 .depend: .PRECIOUS ${SRCS}
352 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
353 _ILINKS+= ${MACHINE_CPUARCH}
355 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
358 .if ${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 ${_link} == "machine"
369 CFLAGS+= -fdebug-prefix-map=./machine=${SYSDIR}/${MACHINE}/include
371 CFLAGS+= -fdebug-prefix-map=./${_link}=${SYSDIR}/${_link}/include
376 @case ${.TARGET} in \
378 path=${S}/${MACHINE}/include ;; \
380 path=${S}/${.TARGET}/include ;; \
382 ${ECHO} ${.TARGET} "->" $$path ; \
383 ln -fns $$path ${.TARGET}
385 # .depend needs include links so we remove them only together.
386 kernel-cleandepend: .PHONY
387 rm -f .depend .depend.* ${_ILINKS}
390 @ls .depend.* > /dev/null 2>&1 || \
391 { echo "you must make all first"; exit 1; }
392 sh $S/conf/systags.sh
394 kernel-install: .PHONY
395 @if [ ! -f ${KERNEL_KO} ] ; then \
396 echo "You must build a kernel first." ; \
399 .if exists(${DESTDIR}${KODIR})
400 -thiskernel=`sysctl -n kern.bootfile || echo /boot/kernel/kernel` ; \
401 if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
402 chflags -R noschg ${DESTDIR}${KODIR} ; \
403 rm -rf ${DESTDIR}${KODIR} ; \
404 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
406 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
407 chflags -R noschg ${DESTDIR}${KODIR}.old ; \
408 rm -rf ${DESTDIR}${KODIR}.old ; \
410 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
411 if [ -n "${KERN_DEBUGDIR}" -a \
412 -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
413 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
414 mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
416 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
419 mkdir -p ${DESTDIR}${KODIR}
420 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
421 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
422 mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
423 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
425 .if defined(KERNEL_EXTRA_INSTALL)
426 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
432 @-chflags -R noschg ${DESTDIR}${KODIR}
433 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
434 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
435 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
438 config.o env.o hints.o vers.o vnode_if.o:
442 NEWVERS_ENV+= MAKE="${MAKE}"
443 .if ${MK_REPRODUCIBLE_BUILD} != "no"
446 vers.c: .NOMETA_CMP $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP:Nvers.*}
447 ${NEWVERS_ENV} sh $S/conf/newvers.sh ${NEWVERS_ARGS} ${KERN_IDENT}
449 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
450 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
452 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
454 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
455 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
457 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
459 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
461 .if ${MFS_IMAGE:Uno} != "no"
462 .if empty(MD_ROOT_SIZE_CONFIGURED)
463 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE} $S/dev/md/embedfs.S
464 ${CC} ${CFLAGS} ${ACFLAGS} -DMFS_IMAGE=\""${MFS_IMAGE}"\" -c \
465 $S/dev/md/embedfs.S -o ${.TARGET}
469 # Generate the .bin (booti images) kernel as an extra build output.
470 # The targets and rules to generate these appear in Makefile.$MACHINE
471 # if the platform supports it.
472 .if ${MK_KERNEL_BIN} != "no"
473 KERNEL_EXTRA+= ${KERNEL_KO}.bin
474 KERNEL_EXTRA_INSTALL+= ${KERNEL_KO}.bin
475 CLEAN+= ${KERNEL_KO}.bin