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 !empty(FDT_DTS_FILE)
14 .if defined(DTS) || defined(DTSO)
15 .include "dtb.build.mk"
17 KERNEL_EXTRA+= ${DTB} ${DTBO}
18 CLEAN+= ${DTB} ${DTBO}
20 kernel-install: _dtbinstall
21 .ORDER: beforeinstall _dtbinstall
24 # In case the config had a makeoptions DESTDIR...
26 MKMODULESENV+= DESTDIR="${DESTDIR}"
28 SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;:tA}
29 MKMODULESENV+= KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
30 MKMODULESENV+= MODULE_TIED=yes
32 .if defined(CONF_CFLAGS)
33 MKMODULESENV+= CONF_CFLAGS="${CONF_CFLAGS}"
37 MKMODULESENV+= WITH_CTF="${WITH_CTF}"
40 .if defined(WITH_EXTRA_TCP_STACKS)
41 MKMODULESENV+= WITH_EXTRA_TCP_STACKS="${WITH_EXTRA_TCP_STACKS}"
44 .if defined(SAN_CFLAGS)
45 MKMODULESENV+= SAN_CFLAGS="${SAN_CFLAGS}"
48 .if defined(GCOV_CFLAGS)
49 MKMODULESENV+= GCOV_CFLAGS="${GCOV_CFLAGS}"
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 cd ${LOCAL_MODULES_DIR}/${module}; ${MKMODULESENV} ${MAKE} \
84 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
89 # Handle ports (as defined by the user) that build kernel modules
90 .if !defined(NO_MODULES) && defined(PORTS_MODULES)
92 # The ports tree needs some environment variables defined to match the new kernel
94 # SRC_BASE is how the ports tree refers to the location of the base source files
95 .if !defined(SRC_BASE)
96 SRC_BASE= ${SYSDIR:H:tA}
98 # OSVERSION is used by some ports to determine build options
99 .if !defined(OSRELDATE)
100 # Definition copied from src/Makefile.inc1
101 OSRELDATE!= awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
102 ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
104 # Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
106 # Ports search for some dependencies in PATH, so add the location of the
108 WRKDIRPREFIX?= ${.OBJDIR}
117 MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
119 PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
120 SRC_BASE=${SRC_BASE} \
121 OSVERSION=${OSRELDATE} \
122 WRKDIRPREFIX=${WRKDIRPREFIX}
124 # The WRKDIR needs to be cleaned before building, and trying to change the target
125 # with a :C pattern below results in install -> instclean
127 .for __i in ${PORTS_MODULES}
128 @${ECHO} "===> Ports module ${__i} (all)"
129 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
132 .for __target in install reinstall clean
133 ${__target}: ports-${__target}
135 .for __i in ${PORTS_MODULES}
136 @${ECHO} "===> Ports module ${__i} (${__target})"
137 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/(re)?install/deinstall reinstall/}
142 .ORDER: kernel-install modules-install
145 kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
147 kernel-cleandir: kernel-clean kernel-cleandepend
150 find . -maxdepth 1 ! -type d ! -name version -delete
154 .if !defined(NO_MODULES)
156 modules-depend: beforebuild
157 modules-all: beforebuild
159 .if !defined(NO_MODULES_OBJ)
160 modules-all modules-depend: modules-obj
165 FULLKERNEL= ${KERNEL_KO}
167 FULLKERNEL= ${KERNEL_KO}.full
168 ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
169 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
170 ${FULLKERNEL} ${.TARGET}
171 ${KERNEL_KO}.debug: ${FULLKERNEL}
172 ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
173 install.debug reinstall.debug: gdbinit
174 cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
176 # Install gdbinit files for kernel debugging.
178 grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
179 sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
180 cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
181 .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
182 cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
183 ${.CURDIR}/gdbinit.machine
187 ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
189 @echo linking ${.TARGET}
191 .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
192 @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
194 .if ${MK_CTF} != "no"
195 @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
196 @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
199 ${OBJCOPY} --strip-debug ${.TARGET}
203 OBJS_DEPEND_GUESS+= offset.inc assym.inc vnode_if.h ${BEFORE_DEPEND:M*.h} \
204 ${MFILES:T:S/.m$/.h/}
206 .for mfile in ${MFILES}
207 # XXX the low quality .m.o rules gnerated by config are normally used
208 # instead of the .m.c rules here.
209 ${mfile:T:S/.m$/.c/}: ${mfile}
210 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
211 ${mfile:T:S/.m$/.h/}: ${mfile}
212 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
216 rm -f *.o *.so *.pico *.ko *.s eddep errs \
217 ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
219 vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
220 ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
223 # This is a hack. BFD "optimizes" away dynamic mode if there are no
224 # dynamic references. We could probably do a '-Bforcedynamic' mode like
225 # in the a.out ld. For now, this works.
226 HACK_EXTRA_FLAGS?= -shared
229 ${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
232 offset.inc: $S/kern/genoffset.sh genoffset.o
233 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genoffset.sh genoffset.o > ${.TARGET}
235 genoffset.o: $S/kern/genoffset.c
236 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/kern/genoffset.c
238 # genoffset_test.o is not actually used for anything - the point of compiling it
239 # is to exercise the CTASSERT that checks that the offsets in the offset.inc
240 # _lite struct(s) match those in the original(s).
241 genoffset_test.o: $S/kern/genoffset.c offset.inc
242 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -DOFFSET_TEST \
243 $S/kern/genoffset.c -o ${.TARGET}
245 assym.inc: $S/kern/genassym.sh genassym.o genoffset_test.o
246 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
248 genassym.o: $S/$M/$M/genassym.c offset.inc
249 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/$M/$M/genassym.c
251 OBJS_DEPEND_GUESS+= opt_global.h
252 genoffset.o genassym.o vers.o: opt_global.h
254 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
257 # Skip reading .depend when not needed to speed up tree-walks and simple
258 # lookups. For install, only do this if no other targets are specified.
259 # Also skip generating or including .depend.* files if in meta+filemon mode
260 # since it will track dependencies itself. OBJS_DEPEND_GUESS is still used
261 # for _meta_filemon but not for _SKIP_DEPEND.
262 .if !defined(NO_SKIP_DEPEND) && \
263 ((!empty(.MAKEFLAGS:M-V) && empty(.MAKEFLAGS:M*DEP*)) || \
264 ${.TARGETS:M*obj} == ${.TARGETS} || \
265 ${.TARGETS:M*clean*} == ${.TARGETS} || \
266 ${.TARGETS:M*install*} == ${.TARGETS})
269 .if defined(_SKIP_DEPEND) || defined(_meta_filemon)
270 .MAKE.DEPENDFILE= /dev/null
273 kernel-depend: .depend
274 SRCS= assym.inc offset.inc vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
275 ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
276 ${MFILES:T:S/.m$/.h/}
277 DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o genoffset.o genoffset_test.o
278 DEPENDOBJS+= ${CLEAN:M*.o}
279 DEPENDFILES= ${DEPENDOBJS:O:u:C/^/.depend./}
280 .if ${MAKE_VERSION} < 20160220
283 .if defined(_SKIP_DEPEND)
284 # Don't bother reading any .meta files
285 ${DEPENDOBJS}: .NOMETA
287 # Unset these to avoid looping/statting on them later.
290 .endif # defined(_SKIP_DEPEND)
291 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
292 DEPEND_CFLAGS+= -MT${.TARGET}
293 .if !defined(_meta_filemon)
294 .if !empty(DEPEND_CFLAGS)
295 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
296 # as those are the only ones we will include.
297 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
298 CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
300 .for __depend_obj in ${DEPENDFILES}
301 .if ${MAKE_VERSION} < 20160220
302 .sinclude "${.OBJDIR}/${__depend_obj}"
304 .dinclude "${.OBJDIR}/${__depend_obj}"
307 .endif # !defined(_meta_filemon)
309 # Always run 'make depend' to generate dependencies early and to avoid the
310 # need for manually running it. For the kernel this is mostly a NOP since
311 # all dependencies are correctly added or accounted for. This is mostly to
312 # ensure downstream uses of kernel-depend are handled.
313 beforebuild: kernel-depend
315 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
316 # For meta+filemon the .meta file is checked for since it is the dependency
318 .for __obj in ${DEPENDOBJS:O:u}
319 .if defined(_meta_filemon)
320 _depfile= ${.OBJDIR}/${__obj}.meta
322 _depfile= ${.OBJDIR}/.depend.${__obj}
324 .if !exists(${_depfile})
325 .if ${SYSTEM_OBJS:M${__obj}}
326 ${__obj}: ${OBJS_DEPEND_GUESS}
328 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
329 .elif defined(_meta_filemon)
330 # For meta mode we still need to know which file to depend on to avoid
331 # ambiguous suffix transformation rules from .PATH. Meta mode does not
332 # use .depend files. We really only need source files, not headers since
333 # they are typically in SRCS/beforebuild already. For target-specific
334 # guesses do include headers though since they may not be in SRCS.
335 .if ${SYSTEM_OBJS:M${__obj}}
336 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
338 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
339 .endif # !exists(${_depfile})
342 .NOPATH: .depend ${DEPENDFILES}
344 .depend: .PRECIOUS ${SRCS}
346 .if ${COMPILER_TYPE} == "clang" || \
347 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 60000)
348 _MAP_DEBUG_PREFIX= yes
352 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
353 _ILINKS+= ${MACHINE_CPUARCH}
355 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
359 # Ensure that the link exists without depending on it when it exists.
360 # Ensure that debug info references the path in the source tree.
361 .for _link in ${_ILINKS}
362 .if !exists(${.OBJDIR}/${_link})
363 ${SRCS} ${CLEAN:M*.o}: ${_link}
365 .if defined(_MAP_DEBUG_PREFIX)
366 .if ${_link} == "machine"
367 CFLAGS+= -fdebug-prefix-map=./machine=${SYSDIR}/${MACHINE}/include
369 CFLAGS+= -fdebug-prefix-map=./${_link}=${SYSDIR}/${_link}/include
375 @case ${.TARGET} in \
377 path=${S}/${MACHINE}/include ;; \
379 path=${S}/${.TARGET}/include ;; \
381 ${ECHO} ${.TARGET} "->" $$path ; \
382 ln -fns $$path ${.TARGET}
384 # .depend needs include links so we remove them only together.
385 kernel-cleandepend: .PHONY
386 rm -f .depend .depend.* ${_ILINKS}
389 @[ -f .depend ] || { echo "you must make depend first"; exit 1; }
390 sh $S/conf/systags.sh
392 kernel-install: .PHONY
393 @if [ ! -f ${KERNEL_KO} ] ; then \
394 echo "You must build a kernel first." ; \
397 .if exists(${DESTDIR}${KODIR})
398 -thiskernel=`sysctl -n kern.bootfile` ; \
399 if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
400 chflags -R noschg ${DESTDIR}${KODIR} ; \
401 rm -rf ${DESTDIR}${KODIR} ; \
402 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
404 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
405 chflags -R noschg ${DESTDIR}${KODIR}.old ; \
406 rm -rf ${DESTDIR}${KODIR}.old ; \
408 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
409 if [ -n "${KERN_DEBUGDIR}" -a \
410 -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
411 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
412 mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
414 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
417 mkdir -p ${DESTDIR}${KODIR}
418 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
419 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
420 mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
421 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
423 .if defined(KERNEL_EXTRA_INSTALL)
424 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
430 @-chflags -R noschg ${DESTDIR}${KODIR}
431 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
432 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
433 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
436 config.o env.o hints.o vers.o vnode_if.o:
440 .if ${MK_REPRODUCIBLE_BUILD} != "no"
443 vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
444 MAKE="${MAKE}" sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
446 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
447 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
449 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
451 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
452 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
454 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
456 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
458 .if ${MFS_IMAGE:Uno} != "no"
459 .if empty(MD_ROOT_SIZE_CONFIGURED)
460 # Generate an object file from the file system image to embed in the kernel
461 # via linking. Make sure the contents are in the mfs section and rename the
462 # start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
464 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
465 ${OBJCOPY} --input-target binary \
466 --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
467 --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
468 ${MFS_IMAGE} ${.TARGET}
470 --rename-section .data=mfs,contents,alloc,load,readonly,data \
472 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
474 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
476 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
481 # XXX strictly, everything depends on Makefile because changes to ${PROF}
482 # only appear there, but we don't handle that.