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 # In case the config had a makeoptions DESTDIR...
13 MKMODULESENV+= DESTDIR="${DESTDIR}"
15 SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;:tA}
16 MKMODULESENV+= KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
18 .if defined(CONF_CFLAGS)
19 MKMODULESENV+= CONF_CFLAGS="${CONF_CFLAGS}"
23 MKMODULESENV+= WITH_CTF="${WITH_CTF}"
26 .if defined(WITH_EXTRA_TCP_STACKS)
27 MKMODULESENV+= WITH_EXTRA_TCP_STACKS="${WITH_EXTRA_TCP_STACKS}"
30 # Allow overriding the kernel debug directory, so kernel and user debug may be
31 # installed in different directories. Setting it to "" restores the historical
32 # behavior of installing debug files in the kernel directory.
33 KERN_DEBUGDIR?= ${DEBUGDIR}
37 .for target in all clean cleandepend cleandir clobber depend install \
38 ${_obj} reinstall tags
39 ${target}: kernel-${target}
40 .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
41 ${target}: modules-${target}
43 cd $S/modules; ${MKMODULESENV} ${MAKE} \
44 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
48 # Handle ports (as defined by the user) that build kernel modules
49 .if !defined(NO_MODULES) && defined(PORTS_MODULES)
51 # The ports tree needs some environment variables defined to match the new kernel
53 # Ports search for some dependencies in PATH, so add the location of the installed files
54 LOCALBASE?= /usr/local
55 # SRC_BASE is how the ports tree refers to the location of the base source files
56 .if !defined(SRC_BASE)
57 SRC_BASE= ${SYSDIR:H:tA}
59 # OSVERSION is used by some ports to determine build options
60 .if !defined(OSRELDATE)
61 # Definition copied from src/Makefile.inc1
62 OSRELDATE!= awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
63 ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
65 # Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
66 WRKDIRPREFIX?= ${.OBJDIR}
75 MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
77 PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
78 SRC_BASE=${SRC_BASE} \
79 OSVERSION=${OSRELDATE} \
80 WRKDIRPREFIX=${WRKDIRPREFIX}
82 # The WRKDIR needs to be cleaned before building, and trying to change the target
83 # with a :C pattern below results in install -> instclean
85 .for __i in ${PORTS_MODULES}
86 @${ECHO} "===> Ports module ${__i} (all)"
87 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
90 .for __target in install reinstall clean
91 ${__target}: ports-${__target}
93 .for __i in ${PORTS_MODULES}
94 @${ECHO} "===> Ports module ${__i} (${__target})"
95 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/(re)?install/deinstall reinstall/}
100 .ORDER: kernel-install modules-install
103 kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
105 kernel-cleandir: kernel-clean kernel-cleandepend
108 find . -maxdepth 1 ! -type d ! -name version -delete
112 .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
115 .if !defined(NO_MODULES_OBJ)
116 modules-all modules-depend: modules-obj
121 FULLKERNEL= ${KERNEL_KO}
123 FULLKERNEL= ${KERNEL_KO}.full
124 ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
125 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
126 ${FULLKERNEL} ${.TARGET}
127 ${KERNEL_KO}.debug: ${FULLKERNEL}
128 ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
129 install.debug reinstall.debug: gdbinit
130 cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
132 # Install gdbinit files for kernel debugging.
134 grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
135 sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
136 cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
137 .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
138 cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
139 ${.CURDIR}/gdbinit.machine
143 ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
145 @echo linking ${.TARGET}
147 .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
148 @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
150 .if ${MK_CTF} != "no"
151 @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
152 @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
155 ${OBJCOPY} --strip-debug ${.TARGET}
159 OBJS_DEPEND_GUESS+= assym.inc vnode_if.h ${BEFORE_DEPEND:M*.h} \
160 ${MFILES:T:S/.m$/.h/}
162 .for mfile in ${MFILES}
163 # XXX the low quality .m.o rules gnerated by config are normally used
164 # instead of the .m.c rules here.
165 ${mfile:T:S/.m$/.c/}: ${mfile}
166 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
167 ${mfile:T:S/.m$/.h/}: ${mfile}
168 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
172 rm -f *.o *.so *.pico *.ko *.s eddep errs \
173 ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
175 vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
176 ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
179 # This is a hack. BFD "optimizes" away dynamic mode if there are no
180 # dynamic references. We could probably do a '-Bforcedynamic' mode like
181 # in the a.out ld. For now, this works.
182 HACK_EXTRA_FLAGS?= -shared
185 ${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
188 offset.inc: $S/kern/genoffset.sh genoffset.o
189 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genoffset.sh genoffset.o > ${.TARGET}
191 genoffset.o: $S/kern/genoffset.c
192 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/kern/genoffset.c
194 genoffset_test.c: $S/kern/genoffset.c
195 cp $S/kern/genoffset.c genoffset_test.c
197 genoffset_test.o: genoffset_test.c offset.inc
198 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -DOFFSET_TEST genoffset_test.c
200 assym.inc: $S/kern/genassym.sh genassym.o genoffset_test.o
201 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
203 genassym.o: $S/$M/$M/genassym.c offset.inc
204 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/$M/$M/genassym.c
206 ${SYSTEM_OBJS} genoffset.o genassym.o vers.o: opt_global.h
208 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
211 # Skip reading .depend when not needed to speed up tree-walks and simple
212 # lookups. For install, only do this if no other targets are specified.
213 # Also skip generating or including .depend.* files if in meta+filemon mode
214 # since it will track dependencies itself. OBJS_DEPEND_GUESS is still used
215 # for _meta_filemon but not for _SKIP_DEPEND.
216 .if !defined(NO_SKIP_DEPEND) && \
217 ((!empty(.MAKEFLAGS:M-V) && empty(.MAKEFLAGS:M*DEP*)) || \
218 ${.TARGETS:M*obj} == ${.TARGETS} || \
219 ${.TARGETS:M*clean*} == ${.TARGETS} || \
220 ${.TARGETS:M*install*} == ${.TARGETS})
223 .if defined(_SKIP_DEPEND) || defined(_meta_filemon)
224 .MAKE.DEPENDFILE= /dev/null
227 kernel-depend: .depend
228 SRCS= assym.inc offset.inc vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
229 ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
230 ${MFILES:T:S/.m$/.h/}
231 DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o genoffset.o
232 DEPENDFILES= ${DEPENDOBJS:O:u:C/^/.depend./}
233 .if ${MAKE_VERSION} < 20160220
236 .if defined(_SKIP_DEPEND)
237 # Don't bother reading any .meta files
238 ${DEPENDOBJS}: .NOMETA
240 # Unset these to avoid looping/statting on them later.
243 .endif # defined(_SKIP_DEPEND)
244 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
245 DEPEND_CFLAGS+= -MT${.TARGET}
246 .if !defined(_meta_filemon)
247 .if !empty(DEPEND_CFLAGS)
248 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
249 # as those are the only ones we will include.
250 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
251 CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
253 .for __depend_obj in ${DEPENDFILES}
254 .if ${MAKE_VERSION} < 20160220
255 .sinclude "${.OBJDIR}/${__depend_obj}"
257 .dinclude "${.OBJDIR}/${__depend_obj}"
260 .endif # !defined(_meta_filemon)
262 # Always run 'make depend' to generate dependencies early and to avoid the
263 # need for manually running it. For the kernel this is mostly a NOP since
264 # all dependencies are correctly added or accounted for. This is mostly to
265 # ensure downstream uses of kernel-depend are handled.
266 beforebuild: kernel-depend
268 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
269 # For meta+filemon the .meta file is checked for since it is the dependency
271 .for __obj in ${DEPENDOBJS:O:u}
272 .if defined(_meta_filemon)
273 _depfile= ${.OBJDIR}/${__obj}.meta
275 _depfile= ${.OBJDIR}/.depend.${__obj}
277 .if !exists(${_depfile})
278 .if ${SYSTEM_OBJS:M${__obj}}
279 ${__obj}: ${OBJS_DEPEND_GUESS}
281 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
282 .elif defined(_meta_filemon)
283 # For meta mode we still need to know which file to depend on to avoid
284 # ambiguous suffix transformation rules from .PATH. Meta mode does not
285 # use .depend files. We really only need source files, not headers since
286 # they are typically in SRCS/beforebuild already. For target-specific
287 # guesses do include headers though since they may not be in SRCS.
288 .if ${SYSTEM_OBJS:M${__obj}}
289 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
291 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
292 .endif # !exists(${_depfile})
295 .NOPATH: .depend ${DEPENDFILES}
297 .depend: .PRECIOUS ${SRCS}
300 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
301 _ILINKS+= ${MACHINE_CPUARCH}
303 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
307 # Ensure that the link exists without depending on it when it exists.
308 .for _link in ${_ILINKS}
309 .if !exists(${.OBJDIR}/${_link})
310 ${SRCS} ${CLEAN:M*.o}: ${_link}
315 @case ${.TARGET} in \
317 path=${S}/${MACHINE}/include ;; \
319 path=${S}/${.TARGET}/include ;; \
321 ${ECHO} ${.TARGET} "->" $$path ; \
322 ln -fns $$path ${.TARGET}
324 # .depend needs include links so we remove them only together.
325 kernel-cleandepend: .PHONY
326 rm -f .depend .depend.* ${_ILINKS}
329 @[ -f .depend ] || { echo "you must make depend first"; exit 1; }
330 sh $S/conf/systags.sh
332 kernel-install: .PHONY
333 @if [ ! -f ${KERNEL_KO} ] ; then \
334 echo "You must build a kernel first." ; \
337 .if exists(${DESTDIR}${KODIR})
338 -thiskernel=`sysctl -n kern.bootfile` ; \
339 if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
340 chflags -R noschg ${DESTDIR}${KODIR} ; \
341 rm -rf ${DESTDIR}${KODIR} ; \
342 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
344 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
345 chflags -R noschg ${DESTDIR}${KODIR}.old ; \
346 rm -rf ${DESTDIR}${KODIR}.old ; \
348 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
349 if [ -n "${KERN_DEBUGDIR}" -a \
350 -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
351 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
352 mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
354 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
357 mkdir -p ${DESTDIR}${KODIR}
358 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
359 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
360 mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
361 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
363 .if defined(KERNEL_EXTRA_INSTALL)
364 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
370 @-chflags -R noschg ${DESTDIR}${KODIR}
371 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
372 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
373 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
376 config.o env.o hints.o vers.o vnode_if.o:
380 .if ${MK_REPRODUCIBLE_BUILD} != "no"
383 vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
384 MAKE="${MAKE}" sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
386 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
387 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
389 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
391 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
392 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
394 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
396 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
398 .if ${MFS_IMAGE:Uno} != "no"
399 .if empty(MD_ROOT_SIZE_CONFIGURED)
400 # Generate an object file from the file system image to embed in the kernel
401 # via linking. Make sure the contents are in the mfs section and rename the
402 # start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
404 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
405 ${OBJCOPY} --input-target binary \
406 --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
407 --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
408 ${MFS_IMAGE} ${.TARGET}
410 --rename-section .data=mfs,contents,alloc,load,readonly,data \
412 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
414 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
416 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
421 # XXX strictly, everything depends on Makefile because changes to ${PROF}
422 # only appear there, but we don't handle that.