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 # Allow overriding the kernel debug directory, so kernel and user debug may be
42 # installed in different directories. Setting it to "" restores the historical
43 # behavior of installing debug files in the kernel directory.
44 KERN_DEBUGDIR?= ${DEBUGDIR}
48 .for target in all clean cleandepend cleandir clobber depend install \
49 ${_obj} reinstall tags
50 ${target}: kernel-${target}
51 .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
52 ${target}: modules-${target}
54 cd $S/modules; ${MKMODULESENV} ${MAKE} \
55 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
59 # Handle ports (as defined by the user) that build kernel modules
60 .if !defined(NO_MODULES) && defined(PORTS_MODULES)
62 # The ports tree needs some environment variables defined to match the new kernel
64 # Ports search for some dependencies in PATH, so add the location of the installed files
65 LOCALBASE?= /usr/local
66 # SRC_BASE is how the ports tree refers to the location of the base source files
67 .if !defined(SRC_BASE)
68 SRC_BASE= ${SYSDIR:H:tA}
70 # OSVERSION is used by some ports to determine build options
71 .if !defined(OSRELDATE)
72 # Definition copied from src/Makefile.inc1
73 OSRELDATE!= awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
74 ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
76 # Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
77 WRKDIRPREFIX?= ${.OBJDIR}
86 MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
88 PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
89 SRC_BASE=${SRC_BASE} \
90 OSVERSION=${OSRELDATE} \
91 WRKDIRPREFIX=${WRKDIRPREFIX}
93 # The WRKDIR needs to be cleaned before building, and trying to change the target
94 # with a :C pattern below results in install -> instclean
96 .for __i in ${PORTS_MODULES}
97 @${ECHO} "===> Ports module ${__i} (all)"
98 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
101 .for __target in install reinstall clean
102 ${__target}: ports-${__target}
104 .for __i in ${PORTS_MODULES}
105 @${ECHO} "===> Ports module ${__i} (${__target})"
106 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/(re)?install/deinstall reinstall/}
111 .ORDER: kernel-install modules-install
114 kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
116 kernel-cleandir: kernel-clean kernel-cleandepend
119 find . -maxdepth 1 ! -type d ! -name version -delete
123 .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
125 modules-depend: beforebuild
126 modules-all: beforebuild
128 .if !defined(NO_MODULES_OBJ)
129 modules-all modules-depend: modules-obj
134 FULLKERNEL= ${KERNEL_KO}
136 FULLKERNEL= ${KERNEL_KO}.full
137 ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
138 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
139 ${FULLKERNEL} ${.TARGET}
140 ${KERNEL_KO}.debug: ${FULLKERNEL}
141 ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
142 install.debug reinstall.debug: gdbinit
143 cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
145 # Install gdbinit files for kernel debugging.
147 grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
148 sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
149 cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
150 .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
151 cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
152 ${.CURDIR}/gdbinit.machine
156 ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
158 @echo linking ${.TARGET}
160 .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
161 @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
163 .if ${MK_CTF} != "no"
164 @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
165 @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
168 ${OBJCOPY} --strip-debug ${.TARGET}
172 OBJS_DEPEND_GUESS+= offset.inc assym.inc vnode_if.h ${BEFORE_DEPEND:M*.h} \
173 ${MFILES:T:S/.m$/.h/}
175 .for mfile in ${MFILES}
176 # XXX the low quality .m.o rules gnerated by config are normally used
177 # instead of the .m.c rules here.
178 ${mfile:T:S/.m$/.c/}: ${mfile}
179 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
180 ${mfile:T:S/.m$/.h/}: ${mfile}
181 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
185 rm -f *.o *.so *.pico *.ko *.s eddep errs \
186 ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
188 vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
189 ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
192 # This is a hack. BFD "optimizes" away dynamic mode if there are no
193 # dynamic references. We could probably do a '-Bforcedynamic' mode like
194 # in the a.out ld. For now, this works.
195 HACK_EXTRA_FLAGS?= -shared
198 ${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
201 offset.inc: $S/kern/genoffset.sh genoffset.o
202 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genoffset.sh genoffset.o > ${.TARGET}
204 genoffset.o: $S/kern/genoffset.c
205 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/kern/genoffset.c
207 # genoffset_test.o is not actually used for anything - the point of compiling it
208 # is to exercise the CTASSERT that checks that the offsets in the offset.inc
209 # _lite struct(s) match those in the original(s).
210 genoffset_test.o: $S/kern/genoffset.c offset.inc
211 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -DOFFSET_TEST \
212 $S/kern/genoffset.c -o ${.TARGET}
214 assym.inc: $S/kern/genassym.sh genassym.o genoffset_test.o
215 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
217 genassym.o: $S/$M/$M/genassym.c offset.inc
218 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/$M/$M/genassym.c
220 OBJS_DEPEND_GUESS+= opt_global.h
221 genoffset.o genassym.o vers.o: opt_global.h
223 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
226 # Skip reading .depend when not needed to speed up tree-walks and simple
227 # lookups. For install, only do this if no other targets are specified.
228 # Also skip generating or including .depend.* files if in meta+filemon mode
229 # since it will track dependencies itself. OBJS_DEPEND_GUESS is still used
230 # for _meta_filemon but not for _SKIP_DEPEND.
231 .if !defined(NO_SKIP_DEPEND) && \
232 ((!empty(.MAKEFLAGS:M-V) && empty(.MAKEFLAGS:M*DEP*)) || \
233 ${.TARGETS:M*obj} == ${.TARGETS} || \
234 ${.TARGETS:M*clean*} == ${.TARGETS} || \
235 ${.TARGETS:M*install*} == ${.TARGETS})
238 .if defined(_SKIP_DEPEND) || defined(_meta_filemon)
239 .MAKE.DEPENDFILE= /dev/null
242 kernel-depend: .depend
243 SRCS= assym.inc offset.inc vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
244 ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
245 ${MFILES:T:S/.m$/.h/}
246 DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o genoffset.o genoffset_test.o
247 DEPENDOBJS+= ${CLEAN:M*.o}
248 DEPENDFILES= ${DEPENDOBJS:O:u:C/^/.depend./}
249 .if ${MAKE_VERSION} < 20160220
252 .if defined(_SKIP_DEPEND)
253 # Don't bother reading any .meta files
254 ${DEPENDOBJS}: .NOMETA
256 # Unset these to avoid looping/statting on them later.
259 .endif # defined(_SKIP_DEPEND)
260 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
261 DEPEND_CFLAGS+= -MT${.TARGET}
262 .if !defined(_meta_filemon)
263 .if !empty(DEPEND_CFLAGS)
264 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
265 # as those are the only ones we will include.
266 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
267 CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
269 .for __depend_obj in ${DEPENDFILES}
270 .if ${MAKE_VERSION} < 20160220
271 .sinclude "${.OBJDIR}/${__depend_obj}"
273 .dinclude "${.OBJDIR}/${__depend_obj}"
276 .endif # !defined(_meta_filemon)
278 # Always run 'make depend' to generate dependencies early and to avoid the
279 # need for manually running it. For the kernel this is mostly a NOP since
280 # all dependencies are correctly added or accounted for. This is mostly to
281 # ensure downstream uses of kernel-depend are handled.
282 beforebuild: kernel-depend
284 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
285 # For meta+filemon the .meta file is checked for since it is the dependency
287 .for __obj in ${DEPENDOBJS:O:u}
288 .if defined(_meta_filemon)
289 _depfile= ${.OBJDIR}/${__obj}.meta
291 _depfile= ${.OBJDIR}/.depend.${__obj}
293 .if !exists(${_depfile})
294 .if ${SYSTEM_OBJS:M${__obj}}
295 ${__obj}: ${OBJS_DEPEND_GUESS}
297 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
298 .elif defined(_meta_filemon)
299 # For meta mode we still need to know which file to depend on to avoid
300 # ambiguous suffix transformation rules from .PATH. Meta mode does not
301 # use .depend files. We really only need source files, not headers since
302 # they are typically in SRCS/beforebuild already. For target-specific
303 # guesses do include headers though since they may not be in SRCS.
304 .if ${SYSTEM_OBJS:M${__obj}}
305 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
307 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
308 .endif # !exists(${_depfile})
311 .NOPATH: .depend ${DEPENDFILES}
313 .depend: .PRECIOUS ${SRCS}
315 .if ${COMPILER_TYPE} == "clang" || \
316 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 60000)
317 _MAP_DEBUG_PREFIX= yes
321 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
322 _ILINKS+= ${MACHINE_CPUARCH}
324 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
328 # Ensure that the link exists without depending on it when it exists.
329 # Ensure that debug info references the path in the source tree.
330 .for _link in ${_ILINKS}
331 .if !exists(${.OBJDIR}/${_link})
332 ${SRCS} ${DEPENDOBJS}: ${_link}
334 .if defined(_MAP_DEBUG_PREFIX)
335 .if ${_link} == "machine"
336 CFLAGS+= -fdebug-prefix-map=./machine=${SYSDIR}/${MACHINE}/include
338 CFLAGS+= -fdebug-prefix-map=./${_link}=${SYSDIR}/${_link}/include
344 @case ${.TARGET} in \
346 path=${S}/${MACHINE}/include ;; \
348 path=${S}/${.TARGET}/include ;; \
350 ${ECHO} ${.TARGET} "->" $$path ; \
351 ln -fns $$path ${.TARGET}
353 # .depend needs include links so we remove them only together.
354 kernel-cleandepend: .PHONY
355 rm -f .depend .depend.* ${_ILINKS}
358 @[ -f .depend ] || { echo "you must make depend first"; exit 1; }
359 sh $S/conf/systags.sh
361 kernel-install: .PHONY
362 @if [ ! -f ${KERNEL_KO} ] ; then \
363 echo "You must build a kernel first." ; \
366 .if exists(${DESTDIR}${KODIR})
367 -thiskernel=`sysctl -n kern.bootfile` ; \
368 if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
369 chflags -R noschg ${DESTDIR}${KODIR} ; \
370 rm -rf ${DESTDIR}${KODIR} ; \
371 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
373 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
374 chflags -R noschg ${DESTDIR}${KODIR}.old ; \
375 rm -rf ${DESTDIR}${KODIR}.old ; \
377 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
378 if [ -n "${KERN_DEBUGDIR}" -a \
379 -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
380 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
381 mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
383 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
386 mkdir -p ${DESTDIR}${KODIR}
387 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
388 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
389 mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
390 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
392 .if defined(KERNEL_EXTRA_INSTALL)
393 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
399 @-chflags -R noschg ${DESTDIR}${KODIR}
400 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
401 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
402 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
405 config.o env.o hints.o vers.o vnode_if.o:
409 .if ${MK_REPRODUCIBLE_BUILD} != "no"
412 vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
413 MAKE="${MAKE}" sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
415 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
416 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
418 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
420 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
421 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
423 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
425 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
427 .if ${MFS_IMAGE:Uno} != "no"
428 .if empty(MD_ROOT_SIZE_CONFIGURED)
429 # Generate an object file from the file system image to embed in the kernel
430 # via linking. Make sure the contents are in the mfs section and rename the
431 # start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
433 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
434 ${OBJCOPY} --input-target binary \
435 --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
436 --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
437 ${MFS_IMAGE} ${.TARGET}
439 --rename-section .data=mfs,contents,alloc,load,readonly,data \
441 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
443 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
445 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
450 # XXX strictly, everything depends on Makefile because changes to ${PROF}
451 # only appear there, but we don't handle that.