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="${WITH_EXTRA_TCP_STACKS}"
41 .if !empty(KCSAN_ENABLED)
42 MKMODULESENV+= KCSAN_ENABLED="yes"
45 .if defined(SAN_CFLAGS)
46 MKMODULESENV+= SAN_CFLAGS="${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.
233 force-dynamic-hack.c:
236 force-dynamic-hack.pico: force-dynamic-hack.c Makefile
237 ${CC} ${CCLDFLAGS} -shared ${CFLAGS} -nostdlib \
238 force-dynamic-hack.c -o ${.TARGET}
240 offset.inc: $S/kern/genoffset.sh genoffset.o
241 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genoffset.sh genoffset.o > ${.TARGET}
243 genoffset.o: $S/kern/genoffset.c
244 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon $S/kern/genoffset.c
246 # genoffset_test.o is not actually used for anything - the point of compiling it
247 # is to exercise the CTASSERT that checks that the offsets in the offset.inc
248 # _lite struct(s) match those in the original(s).
249 genoffset_test.o: $S/kern/genoffset.c offset.inc
250 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon -DOFFSET_TEST \
251 $S/kern/genoffset.c -o ${.TARGET}
253 assym.inc: $S/kern/genassym.sh genassym.o genoffset_test.o
254 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
256 genassym.o: $S/$M/$M/genassym.c offset.inc
257 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon $S/$M/$M/genassym.c
259 OBJS_DEPEND_GUESS+= opt_global.h
260 genoffset.o genassym.o vers.o: opt_global.h
262 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
265 # Skip reading .depend when not needed to speed up tree-walks and simple
266 # lookups. For install, only do this if no other targets are specified.
267 # Also skip generating or including .depend.* files if in meta+filemon mode
268 # since it will track dependencies itself. OBJS_DEPEND_GUESS is still used
269 # for _meta_filemon but not for _SKIP_DEPEND.
270 .if !defined(NO_SKIP_DEPEND) && \
271 ((!empty(.MAKEFLAGS:M-V) && empty(.MAKEFLAGS:M*DEP*)) || \
272 ${.TARGETS:M*obj} == ${.TARGETS} || \
273 ${.TARGETS:M*clean*} == ${.TARGETS} || \
274 ${.TARGETS:M*install*} == ${.TARGETS})
277 .if defined(_SKIP_DEPEND) || defined(_meta_filemon)
278 .MAKE.DEPENDFILE= /dev/null
281 kernel-depend: .depend
282 SRCS= assym.inc offset.inc vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
283 ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
284 ${MFILES:T:S/.m$/.h/}
285 DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o genoffset.o genoffset_test.o
286 DEPENDOBJS+= ${CLEAN:M*.o}
287 DEPENDFILES= ${DEPENDOBJS:O:u:C/^/.depend./}
288 .if ${MAKE_VERSION} < 20160220
291 .if defined(_SKIP_DEPEND)
292 # Don't bother reading any .meta files
293 ${DEPENDOBJS}: .NOMETA
295 # Unset these to avoid looping/statting on them later.
298 .endif # defined(_SKIP_DEPEND)
299 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
300 DEPEND_CFLAGS+= -MT${.TARGET}
301 .if !defined(_meta_filemon)
302 .if !empty(DEPEND_CFLAGS)
303 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
304 # as those are the only ones we will include.
305 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
306 CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
308 .for __depend_obj in ${DEPENDFILES}
309 .if ${MAKE_VERSION} < 20160220
310 .sinclude "${.OBJDIR}/${__depend_obj}"
312 .dinclude "${.OBJDIR}/${__depend_obj}"
315 .endif # !defined(_meta_filemon)
317 # Always run 'make depend' to generate dependencies early and to avoid the
318 # need for manually running it. For the kernel this is mostly a NOP since
319 # all dependencies are correctly added or accounted for. This is mostly to
320 # ensure downstream uses of kernel-depend are handled.
321 beforebuild: kernel-depend
323 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
324 # For meta+filemon the .meta file is checked for since it is the dependency
326 .for __obj in ${DEPENDOBJS:O:u}
327 .if defined(_meta_filemon)
328 _depfile= ${.OBJDIR}/${__obj}.meta
330 _depfile= ${.OBJDIR}/.depend.${__obj}
332 .if !exists(${_depfile})
333 .if ${SYSTEM_OBJS:M${__obj}}
334 ${__obj}: ${OBJS_DEPEND_GUESS}
336 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
337 .elif defined(_meta_filemon)
338 # For meta mode we still need to know which file to depend on to avoid
339 # ambiguous suffix transformation rules from .PATH. Meta mode does not
340 # use .depend files. We really only need source files, not headers since
341 # they are typically in SRCS/beforebuild already. For target-specific
342 # guesses do include headers though since they may not be in SRCS.
343 .if ${SYSTEM_OBJS:M${__obj}}
344 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
346 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
347 .endif # !exists(${_depfile})
350 .NOPATH: .depend ${DEPENDFILES}
352 .depend: .PRECIOUS ${SRCS}
354 _MAP_DEBUG_PREFIX= yes
357 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
358 _ILINKS+= ${MACHINE_CPUARCH}
360 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
363 .if ${MACHINE_CPUARCH} == "amd64"
367 # Ensure that the link exists without depending on it when it exists.
368 # Ensure that debug info references the path in the source tree.
369 .for _link in ${_ILINKS}
370 .if !exists(${.OBJDIR}/${_link})
371 ${SRCS} ${DEPENDOBJS}: ${_link}
373 .if defined(_MAP_DEBUG_PREFIX)
374 .if ${_link} == "machine"
375 CFLAGS+= -fdebug-prefix-map=./machine=${SYSDIR}/${MACHINE}/include
377 CFLAGS+= -fdebug-prefix-map=./${_link}=${SYSDIR}/${_link}/include
383 @case ${.TARGET} in \
385 path=${S}/${MACHINE}/include ;; \
387 path=${S}/${.TARGET}/include ;; \
389 ${ECHO} ${.TARGET} "->" $$path ; \
390 ln -fns $$path ${.TARGET}
392 # .depend needs include links so we remove them only together.
393 kernel-cleandepend: .PHONY
394 rm -f .depend .depend.* ${_ILINKS}
397 @ls .depend.* > /dev/null 2>&1 || \
398 { echo "you must make all first"; exit 1; }
399 sh $S/conf/systags.sh
401 kernel-install: .PHONY
402 @if [ ! -f ${KERNEL_KO} ] ; then \
403 echo "You must build a kernel first." ; \
406 .if exists(${DESTDIR}${KODIR})
407 -thiskernel=`sysctl -n kern.bootfile || echo /boot/kernel/kernel` ; \
408 if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
409 chflags -R noschg ${DESTDIR}${KODIR} ; \
410 rm -rf ${DESTDIR}${KODIR} ; \
411 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
413 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
414 chflags -R noschg ${DESTDIR}${KODIR}.old ; \
415 rm -rf ${DESTDIR}${KODIR}.old ; \
417 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
418 if [ -n "${KERN_DEBUGDIR}" -a \
419 -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
420 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
421 mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
423 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
426 mkdir -p ${DESTDIR}${KODIR}
427 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
428 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
429 mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
430 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
432 .if defined(KERNEL_EXTRA_INSTALL)
433 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
439 @-chflags -R noschg ${DESTDIR}${KODIR}
440 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
441 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
442 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
445 config.o env.o hints.o vers.o vnode_if.o:
449 .if ${MK_REPRODUCIBLE_BUILD} != "no"
452 vers.c: .NOMETA_CMP $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP:Nvers.*}
453 MAKE="${MAKE}" sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
455 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
456 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
458 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
460 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
461 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
463 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
465 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
467 .if ${MFS_IMAGE:Uno} != "no"
468 .if empty(MD_ROOT_SIZE_CONFIGURED)
469 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE} $S/dev/md/embedfs.S
470 ${CC} ${CFLAGS} ${ACFLAGS} -DMFS_IMAGE="${MFS_IMAGE}" -c \
471 $S/dev/md/embedfs.S -o ${.TARGET}