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}"
17 MKMODULESENV+= MODULE_TIED=yes
19 .if defined(CONF_CFLAGS)
20 MKMODULESENV+= CONF_CFLAGS="${CONF_CFLAGS}"
24 MKMODULESENV+= WITH_CTF="${WITH_CTF}"
27 .if defined(WITH_EXTRA_TCP_STACKS)
28 MKMODULESENV+= WITH_EXTRA_TCP_STACKS="${WITH_EXTRA_TCP_STACKS}"
31 .if defined(SAN_CFLAGS)
32 MKMODULESENV+= SAN_CFLAGS="${SAN_CFLAGS}"
35 .if defined(GCOV_CFLAGS)
36 MKMODULESENV+= GCOV_CFLAGS="${GCOV_CFLAGS}"
39 # Allow overriding the kernel debug directory, so kernel and user debug may be
40 # installed in different directories. Setting it to "" restores the historical
41 # behavior of installing debug files in the kernel directory.
42 KERN_DEBUGDIR?= ${DEBUGDIR}
46 .if !defined(NO_MODULES)
47 # Default prefix used for modules installed from ports
48 LOCALBASE?= /usr/local
50 LOCAL_MODULES_DIR?= ${LOCALBASE}/sys/modules
52 # Default to installing all modules installed by ports unless overridden
54 .if !defined(LOCAL_MODULES) && exists($LOCAL_MODULES_DIR)
55 LOCAL_MODULES!= ls ${LOCAL_MODULES_DIR}
59 .for target in all clean cleandepend cleandir clobber depend install \
60 ${_obj} reinstall tags
61 ${target}: kernel-${target}
62 .if !defined(NO_MODULES)
63 ${target}: modules-${target}
65 .if !defined(MODULES_WITH_WORLD) && exists($S/modules)
66 cd $S/modules; ${MKMODULESENV} ${MAKE} \
67 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
69 .for module in ${LOCAL_MODULES}
70 cd ${LOCAL_MODULES_DIR}/${module}; ${MKMODULESENV} ${MAKE} \
71 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
76 # Handle ports (as defined by the user) that build kernel modules
77 .if !defined(NO_MODULES) && defined(PORTS_MODULES)
79 # The ports tree needs some environment variables defined to match the new kernel
81 # SRC_BASE is how the ports tree refers to the location of the base source files
82 .if !defined(SRC_BASE)
83 SRC_BASE= ${SYSDIR:H:tA}
85 # OSVERSION is used by some ports to determine build options
86 .if !defined(OSRELDATE)
87 # Definition copied from src/Makefile.inc1
88 OSRELDATE!= awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
89 ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
91 # Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
93 # Ports search for some dependencies in PATH, so add the location of the
95 WRKDIRPREFIX?= ${.OBJDIR}
104 MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
106 PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
107 SRC_BASE=${SRC_BASE} \
108 OSVERSION=${OSRELDATE} \
109 WRKDIRPREFIX=${WRKDIRPREFIX}
111 # The WRKDIR needs to be cleaned before building, and trying to change the target
112 # with a :C pattern below results in install -> instclean
114 .for __i in ${PORTS_MODULES}
115 @${ECHO} "===> Ports module ${__i} (all)"
116 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
119 .for __target in install reinstall clean
120 ${__target}: ports-${__target}
122 .for __i in ${PORTS_MODULES}
123 @${ECHO} "===> Ports module ${__i} (${__target})"
124 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/(re)?install/deinstall reinstall/}
129 .ORDER: kernel-install modules-install
132 kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
134 kernel-cleandir: kernel-clean kernel-cleandepend
137 find . -maxdepth 1 ! -type d ! -name version -delete
141 .if !defined(NO_MODULES)
144 .if !defined(NO_MODULES_OBJ)
145 modules-all modules-depend: modules-obj
150 FULLKERNEL= ${KERNEL_KO}
152 FULLKERNEL= ${KERNEL_KO}.full
153 ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
154 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
155 ${FULLKERNEL} ${.TARGET}
156 ${KERNEL_KO}.debug: ${FULLKERNEL}
157 ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
158 install.debug reinstall.debug: gdbinit
159 cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
161 # Install gdbinit files for kernel debugging.
163 grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
164 sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
165 cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
166 .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
167 cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
168 ${.CURDIR}/gdbinit.machine
172 ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
174 @echo linking ${.TARGET}
176 .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
177 @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
179 .if ${MK_CTF} != "no"
180 @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
181 @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
184 ${OBJCOPY} --strip-debug ${.TARGET}
188 OBJS_DEPEND_GUESS+= offset.inc assym.inc vnode_if.h ${BEFORE_DEPEND:M*.h} \
189 ${MFILES:T:S/.m$/.h/}
191 .for mfile in ${MFILES}
192 # XXX the low quality .m.o rules gnerated by config are normally used
193 # instead of the .m.c rules here.
194 ${mfile:T:S/.m$/.c/}: ${mfile}
195 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
196 ${mfile:T:S/.m$/.h/}: ${mfile}
197 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
201 rm -f *.o *.so *.pico *.ko *.s eddep errs \
202 ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
204 vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
205 ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
208 # This is a hack. BFD "optimizes" away dynamic mode if there are no
209 # dynamic references. We could probably do a '-Bforcedynamic' mode like
210 # in the a.out ld. For now, this works.
211 HACK_EXTRA_FLAGS?= -shared
214 ${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
217 offset.inc: $S/kern/genoffset.sh genoffset.o
218 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genoffset.sh genoffset.o > ${.TARGET}
220 genoffset.o: $S/kern/genoffset.c
221 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/kern/genoffset.c
223 # genoffset_test.o is not actually used for anything - the point of compiling it
224 # is to exercise the CTASSERT that checks that the offsets in the offset.inc
225 # _lite struct(s) match those in the original(s).
226 genoffset_test.o: $S/kern/genoffset.c offset.inc
227 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -DOFFSET_TEST \
228 $S/kern/genoffset.c -o ${.TARGET}
230 assym.inc: $S/kern/genassym.sh genassym.o genoffset_test.o
231 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
233 genassym.o: $S/$M/$M/genassym.c offset.inc
234 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/$M/$M/genassym.c
236 OBJS_DEPEND_GUESS+= opt_global.h
237 genoffset.o genassym.o vers.o: opt_global.h
239 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
242 # Skip reading .depend when not needed to speed up tree-walks and simple
243 # lookups. For install, only do this if no other targets are specified.
244 # Also skip generating or including .depend.* files if in meta+filemon mode
245 # since it will track dependencies itself. OBJS_DEPEND_GUESS is still used
246 # for _meta_filemon but not for _SKIP_DEPEND.
247 .if !defined(NO_SKIP_DEPEND) && \
248 ((!empty(.MAKEFLAGS:M-V) && empty(.MAKEFLAGS:M*DEP*)) || \
249 ${.TARGETS:M*obj} == ${.TARGETS} || \
250 ${.TARGETS:M*clean*} == ${.TARGETS} || \
251 ${.TARGETS:M*install*} == ${.TARGETS})
254 .if defined(_SKIP_DEPEND) || defined(_meta_filemon)
255 .MAKE.DEPENDFILE= /dev/null
258 kernel-depend: .depend
259 SRCS= assym.inc offset.inc vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
260 ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
261 ${MFILES:T:S/.m$/.h/}
262 DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o genoffset.o genoffset_test.o
263 DEPENDOBJS+= ${CLEAN:M*.o}
264 DEPENDFILES= ${DEPENDOBJS:O:u:C/^/.depend./}
265 .if ${MAKE_VERSION} < 20160220
268 .if defined(_SKIP_DEPEND)
269 # Don't bother reading any .meta files
270 ${DEPENDOBJS}: .NOMETA
272 # Unset these to avoid looping/statting on them later.
275 .endif # defined(_SKIP_DEPEND)
276 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
277 DEPEND_CFLAGS+= -MT${.TARGET}
278 .if !defined(_meta_filemon)
279 .if !empty(DEPEND_CFLAGS)
280 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
281 # as those are the only ones we will include.
282 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
283 CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
285 .for __depend_obj in ${DEPENDFILES}
286 .if ${MAKE_VERSION} < 20160220
287 .sinclude "${.OBJDIR}/${__depend_obj}"
289 .dinclude "${.OBJDIR}/${__depend_obj}"
292 .endif # !defined(_meta_filemon)
294 # Always run 'make depend' to generate dependencies early and to avoid the
295 # need for manually running it. For the kernel this is mostly a NOP since
296 # all dependencies are correctly added or accounted for. This is mostly to
297 # ensure downstream uses of kernel-depend are handled.
298 beforebuild: kernel-depend
300 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
301 # For meta+filemon the .meta file is checked for since it is the dependency
303 .for __obj in ${DEPENDOBJS:O:u}
304 .if defined(_meta_filemon)
305 _depfile= ${.OBJDIR}/${__obj}.meta
307 _depfile= ${.OBJDIR}/.depend.${__obj}
309 .if !exists(${_depfile})
310 .if ${SYSTEM_OBJS:M${__obj}}
311 ${__obj}: ${OBJS_DEPEND_GUESS}
313 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
314 .elif defined(_meta_filemon)
315 # For meta mode we still need to know which file to depend on to avoid
316 # ambiguous suffix transformation rules from .PATH. Meta mode does not
317 # use .depend files. We really only need source files, not headers since
318 # they are typically in SRCS/beforebuild already. For target-specific
319 # guesses do include headers though since they may not be in SRCS.
320 .if ${SYSTEM_OBJS:M${__obj}}
321 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
323 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
324 .endif # !exists(${_depfile})
327 .NOPATH: .depend ${DEPENDFILES}
329 .depend: .PRECIOUS ${SRCS}
332 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
333 _ILINKS+= ${MACHINE_CPUARCH}
335 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
339 # Ensure that the link exists without depending on it when it exists.
340 .for _link in ${_ILINKS}
341 .if !exists(${.OBJDIR}/${_link})
342 ${SRCS} ${CLEAN:M*.o}: ${_link}
347 @case ${.TARGET} in \
349 path=${S}/${MACHINE}/include ;; \
351 path=${S}/${.TARGET}/include ;; \
353 ${ECHO} ${.TARGET} "->" $$path ; \
354 ln -fns $$path ${.TARGET}
356 # .depend needs include links so we remove them only together.
357 kernel-cleandepend: .PHONY
358 rm -f .depend .depend.* ${_ILINKS}
361 @[ -f .depend ] || { echo "you must make depend first"; exit 1; }
362 sh $S/conf/systags.sh
364 kernel-install: .PHONY
365 @if [ ! -f ${KERNEL_KO} ] ; then \
366 echo "You must build a kernel first." ; \
369 .if exists(${DESTDIR}${KODIR})
370 -thiskernel=`sysctl -n kern.bootfile` ; \
371 if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
372 chflags -R noschg ${DESTDIR}${KODIR} ; \
373 rm -rf ${DESTDIR}${KODIR} ; \
374 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
376 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
377 chflags -R noschg ${DESTDIR}${KODIR}.old ; \
378 rm -rf ${DESTDIR}${KODIR}.old ; \
380 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
381 if [ -n "${KERN_DEBUGDIR}" -a \
382 -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
383 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
384 mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
386 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
389 mkdir -p ${DESTDIR}${KODIR}
390 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
391 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
392 mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
393 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
395 .if defined(KERNEL_EXTRA_INSTALL)
396 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
402 @-chflags -R noschg ${DESTDIR}${KODIR}
403 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
404 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
405 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
408 config.o env.o hints.o vers.o vnode_if.o:
412 .if ${MK_REPRODUCIBLE_BUILD} != "no"
415 vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
416 MAKE="${MAKE}" sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
418 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
419 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
421 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
423 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
424 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
426 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
428 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
430 .if ${MFS_IMAGE:Uno} != "no"
431 .if empty(MD_ROOT_SIZE_CONFIGURED)
432 # Generate an object file from the file system image to embed in the kernel
433 # via linking. Make sure the contents are in the mfs section and rename the
434 # start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
436 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
437 ${OBJCOPY} --input-target binary \
438 --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
439 --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
440 ${MFS_IMAGE} ${.TARGET}
442 --rename-section .data=mfs,contents,alloc,load,readonly,data \
444 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
446 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
448 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
453 # XXX strictly, everything depends on Makefile because changes to ${PROF}
454 # only appear there, but we don't handle that.