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)
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)
126 .if !defined(NO_MODULES_OBJ)
127 modules-all modules-depend: modules-obj
132 FULLKERNEL= ${KERNEL_KO}
134 FULLKERNEL= ${KERNEL_KO}.full
135 ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
136 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
137 ${FULLKERNEL} ${.TARGET}
138 ${KERNEL_KO}.debug: ${FULLKERNEL}
139 ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
140 install.debug reinstall.debug: gdbinit
141 cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
143 # Install gdbinit files for kernel debugging.
145 grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
146 sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
147 cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
148 .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
149 cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
150 ${.CURDIR}/gdbinit.machine
154 ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
156 @echo linking ${.TARGET}
158 .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
159 @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
161 .if ${MK_CTF} != "no"
162 @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
163 @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
166 ${OBJCOPY} --strip-debug ${.TARGET}
170 OBJS_DEPEND_GUESS+= offset.inc assym.inc vnode_if.h ${BEFORE_DEPEND:M*.h} \
171 ${MFILES:T:S/.m$/.h/}
173 .for mfile in ${MFILES}
174 # XXX the low quality .m.o rules gnerated by config are normally used
175 # instead of the .m.c rules here.
176 ${mfile:T:S/.m$/.c/}: ${mfile}
177 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
178 ${mfile:T:S/.m$/.h/}: ${mfile}
179 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
183 rm -f *.o *.so *.pico *.ko *.s eddep errs \
184 ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
186 vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
187 ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
190 # This is a hack. BFD "optimizes" away dynamic mode if there are no
191 # dynamic references. We could probably do a '-Bforcedynamic' mode like
192 # in the a.out ld. For now, this works.
193 HACK_EXTRA_FLAGS?= -shared
196 ${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
199 offset.inc: $S/kern/genoffset.sh genoffset.o
200 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genoffset.sh genoffset.o > ${.TARGET}
202 genoffset.o: $S/kern/genoffset.c
203 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/kern/genoffset.c
205 # genoffset_test.o is not actually used for anything - the point of compiling it
206 # is to exercise the CTASSERT that checks that the offsets in the offset.inc
207 # _lite struct(s) match those in the original(s).
208 genoffset_test.o: $S/kern/genoffset.c offset.inc
209 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -DOFFSET_TEST \
210 $S/kern/genoffset.c -o ${.TARGET}
212 assym.inc: $S/kern/genassym.sh genassym.o genoffset_test.o
213 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
215 genassym.o: $S/$M/$M/genassym.c offset.inc
216 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/$M/$M/genassym.c
218 OBJS_DEPEND_GUESS+= opt_global.h
219 genoffset.o genassym.o vers.o: opt_global.h
221 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
224 # Skip reading .depend when not needed to speed up tree-walks and simple
225 # lookups. For install, only do this if no other targets are specified.
226 # Also skip generating or including .depend.* files if in meta+filemon mode
227 # since it will track dependencies itself. OBJS_DEPEND_GUESS is still used
228 # for _meta_filemon but not for _SKIP_DEPEND.
229 .if !defined(NO_SKIP_DEPEND) && \
230 ((!empty(.MAKEFLAGS:M-V) && empty(.MAKEFLAGS:M*DEP*)) || \
231 ${.TARGETS:M*obj} == ${.TARGETS} || \
232 ${.TARGETS:M*clean*} == ${.TARGETS} || \
233 ${.TARGETS:M*install*} == ${.TARGETS})
236 .if defined(_SKIP_DEPEND) || defined(_meta_filemon)
237 .MAKE.DEPENDFILE= /dev/null
240 kernel-depend: .depend
241 SRCS= assym.inc offset.inc vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
242 ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
243 ${MFILES:T:S/.m$/.h/}
244 DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o genoffset.o genoffset_test.o
245 DEPENDOBJS+= ${CLEAN:M*.o}
246 DEPENDFILES= ${DEPENDOBJS:O:u:C/^/.depend./}
247 .if ${MAKE_VERSION} < 20160220
250 .if defined(_SKIP_DEPEND)
251 # Don't bother reading any .meta files
252 ${DEPENDOBJS}: .NOMETA
254 # Unset these to avoid looping/statting on them later.
257 .endif # defined(_SKIP_DEPEND)
258 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
259 DEPEND_CFLAGS+= -MT${.TARGET}
260 .if !defined(_meta_filemon)
261 .if !empty(DEPEND_CFLAGS)
262 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
263 # as those are the only ones we will include.
264 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
265 CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
267 .for __depend_obj in ${DEPENDFILES}
268 .if ${MAKE_VERSION} < 20160220
269 .sinclude "${.OBJDIR}/${__depend_obj}"
271 .dinclude "${.OBJDIR}/${__depend_obj}"
274 .endif # !defined(_meta_filemon)
276 # Always run 'make depend' to generate dependencies early and to avoid the
277 # need for manually running it. For the kernel this is mostly a NOP since
278 # all dependencies are correctly added or accounted for. This is mostly to
279 # ensure downstream uses of kernel-depend are handled.
280 beforebuild: kernel-depend
282 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
283 # For meta+filemon the .meta file is checked for since it is the dependency
285 .for __obj in ${DEPENDOBJS:O:u}
286 .if defined(_meta_filemon)
287 _depfile= ${.OBJDIR}/${__obj}.meta
289 _depfile= ${.OBJDIR}/.depend.${__obj}
291 .if !exists(${_depfile})
292 .if ${SYSTEM_OBJS:M${__obj}}
293 ${__obj}: ${OBJS_DEPEND_GUESS}
295 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
296 .elif defined(_meta_filemon)
297 # For meta mode we still need to know which file to depend on to avoid
298 # ambiguous suffix transformation rules from .PATH. Meta mode does not
299 # use .depend files. We really only need source files, not headers since
300 # they are typically in SRCS/beforebuild already. For target-specific
301 # guesses do include headers though since they may not be in SRCS.
302 .if ${SYSTEM_OBJS:M${__obj}}
303 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
305 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
306 .endif # !exists(${_depfile})
309 .NOPATH: .depend ${DEPENDFILES}
311 .depend: .PRECIOUS ${SRCS}
314 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
315 _ILINKS+= ${MACHINE_CPUARCH}
317 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
321 # Ensure that the link exists without depending on it when it exists.
322 .for _link in ${_ILINKS}
323 .if !exists(${.OBJDIR}/${_link})
324 ${SRCS} ${CLEAN:M*.o}: ${_link}
329 @case ${.TARGET} in \
331 path=${S}/${MACHINE}/include ;; \
333 path=${S}/${.TARGET}/include ;; \
335 ${ECHO} ${.TARGET} "->" $$path ; \
336 ln -fns $$path ${.TARGET}
338 # .depend needs include links so we remove them only together.
339 kernel-cleandepend: .PHONY
340 rm -f .depend .depend.* ${_ILINKS}
343 @[ -f .depend ] || { echo "you must make depend first"; exit 1; }
344 sh $S/conf/systags.sh
346 kernel-install: .PHONY
347 @if [ ! -f ${KERNEL_KO} ] ; then \
348 echo "You must build a kernel first." ; \
351 .if exists(${DESTDIR}${KODIR})
352 -thiskernel=`sysctl -n kern.bootfile` ; \
353 if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
354 chflags -R noschg ${DESTDIR}${KODIR} ; \
355 rm -rf ${DESTDIR}${KODIR} ; \
356 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
358 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
359 chflags -R noschg ${DESTDIR}${KODIR}.old ; \
360 rm -rf ${DESTDIR}${KODIR}.old ; \
362 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
363 if [ -n "${KERN_DEBUGDIR}" -a \
364 -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
365 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
366 mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
368 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
371 mkdir -p ${DESTDIR}${KODIR}
372 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
373 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
374 mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
375 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
377 .if defined(KERNEL_EXTRA_INSTALL)
378 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
384 @-chflags -R noschg ${DESTDIR}${KODIR}
385 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
386 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
387 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
390 config.o env.o hints.o vers.o vnode_if.o:
394 .if ${MK_REPRODUCIBLE_BUILD} != "no"
397 vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
398 MAKE="${MAKE}" sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
400 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
401 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
403 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
405 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
406 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
408 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
410 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
412 .if ${MFS_IMAGE:Uno} != "no"
413 .if empty(MD_ROOT_SIZE_CONFIGURED)
414 # Generate an object file from the file system image to embed in the kernel
415 # via linking. Make sure the contents are in the mfs section and rename the
416 # start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
418 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
419 ${OBJCOPY} --input-target binary \
420 --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
421 --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
422 ${MFS_IMAGE} ${.TARGET}
424 --rename-section .data=mfs,contents,alloc,load,readonly,data \
426 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
428 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
430 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
435 # XXX strictly, everything depends on Makefile because changes to ${PROF}
436 # only appear there, but we don't handle that.