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 # Allow overriding the kernel debug directory, so kernel and user debug may be
36 # installed in different directories. Setting it to "" restores the historical
37 # behavior of installing debug files in the kernel directory.
38 KERN_DEBUGDIR?= ${DEBUGDIR}
42 .if !defined(NO_MODULES)
43 # Default prefix used for modules installed from ports
44 LOCALBASE?= /usr/local
46 LOCAL_MODULES_DIR?= ${LOCALBASE}/sys/modules
48 # Default to installing all modules installed by ports unless overridden
50 .if !defined(LOCAL_MODULES) && exists($LOCAL_MODULES_DIR)
51 LOCAL_MODULES!= ls ${LOCAL_MODULES_DIR}
55 .for target in all clean cleandepend cleandir clobber depend install \
56 ${_obj} reinstall tags
57 ${target}: kernel-${target}
58 .if !defined(NO_MODULES)
59 ${target}: modules-${target}
61 .if !defined(MODULES_WITH_WORLD) && exists($S/modules)
62 cd $S/modules; ${MKMODULESENV} ${MAKE} \
63 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
65 .for module in ${LOCAL_MODULES}
66 cd ${LOCAL_MODULES_DIR}/${module}; ${MKMODULESENV} ${MAKE} \
67 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
72 # Handle ports (as defined by the user) that build kernel modules
73 .if !defined(NO_MODULES) && defined(PORTS_MODULES)
75 # The ports tree needs some environment variables defined to match the new kernel
77 # SRC_BASE is how the ports tree refers to the location of the base source files
78 .if !defined(SRC_BASE)
79 SRC_BASE= ${SYSDIR:H:tA}
81 # OSVERSION is used by some ports to determine build options
82 .if !defined(OSRELDATE)
83 # Definition copied from src/Makefile.inc1
84 OSRELDATE!= awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
85 ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
87 # Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
89 # Ports search for some dependencies in PATH, so add the location of the
91 WRKDIRPREFIX?= ${.OBJDIR}
100 MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
102 PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
103 SRC_BASE=${SRC_BASE} \
104 OSVERSION=${OSRELDATE} \
105 WRKDIRPREFIX=${WRKDIRPREFIX}
107 # The WRKDIR needs to be cleaned before building, and trying to change the target
108 # with a :C pattern below results in install -> instclean
110 .for __i in ${PORTS_MODULES}
111 @${ECHO} "===> Ports module ${__i} (all)"
112 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
115 .for __target in install reinstall clean
116 ${__target}: ports-${__target}
118 .for __i in ${PORTS_MODULES}
119 @${ECHO} "===> Ports module ${__i} (${__target})"
120 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/(re)?install/deinstall reinstall/}
125 .ORDER: kernel-install modules-install
128 kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
130 kernel-cleandir: kernel-clean kernel-cleandepend
133 find . -maxdepth 1 ! -type d ! -name version -delete
137 .if !defined(NO_MODULES)
140 .if !defined(NO_MODULES_OBJ)
141 modules-all modules-depend: modules-obj
146 FULLKERNEL= ${KERNEL_KO}
148 FULLKERNEL= ${KERNEL_KO}.full
149 ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
150 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
151 ${FULLKERNEL} ${.TARGET}
152 ${KERNEL_KO}.debug: ${FULLKERNEL}
153 ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
154 install.debug reinstall.debug: gdbinit
155 cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
157 # Install gdbinit files for kernel debugging.
159 grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
160 sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
161 cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
162 .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
163 cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
164 ${.CURDIR}/gdbinit.machine
168 ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
170 @echo linking ${.TARGET}
172 .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
173 @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
175 .if ${MK_CTF} != "no"
176 @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
177 @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
180 ${OBJCOPY} --strip-debug ${.TARGET}
184 OBJS_DEPEND_GUESS+= offset.inc assym.inc vnode_if.h ${BEFORE_DEPEND:M*.h} \
185 ${MFILES:T:S/.m$/.h/}
187 .for mfile in ${MFILES}
188 # XXX the low quality .m.o rules gnerated by config are normally used
189 # instead of the .m.c rules here.
190 ${mfile:T:S/.m$/.c/}: ${mfile}
191 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
192 ${mfile:T:S/.m$/.h/}: ${mfile}
193 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
197 rm -f *.o *.so *.pico *.ko *.s eddep errs \
198 ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
200 vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
201 ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
204 # This is a hack. BFD "optimizes" away dynamic mode if there are no
205 # dynamic references. We could probably do a '-Bforcedynamic' mode like
206 # in the a.out ld. For now, this works.
207 HACK_EXTRA_FLAGS?= -shared
210 ${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
213 offset.inc: $S/kern/genoffset.sh genoffset.o
214 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genoffset.sh genoffset.o > ${.TARGET}
216 genoffset.o: $S/kern/genoffset.c
217 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/kern/genoffset.c
219 # genoffset_test.o is not actually used for anything - the point of compiling it
220 # is to exercise the CTASSERT that checks that the offsets in the offset.inc
221 # _lite struct(s) match those in the original(s).
222 genoffset_test.o: $S/kern/genoffset.c offset.inc
223 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -DOFFSET_TEST \
224 $S/kern/genoffset.c -o ${.TARGET}
226 assym.inc: $S/kern/genassym.sh genassym.o genoffset_test.o
227 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
229 genassym.o: $S/$M/$M/genassym.c offset.inc
230 ${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/$M/$M/genassym.c
232 OBJS_DEPEND_GUESS+= opt_global.h
233 genoffset.o genassym.o vers.o: opt_global.h
235 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
238 # Skip reading .depend when not needed to speed up tree-walks and simple
239 # lookups. For install, only do this if no other targets are specified.
240 # Also skip generating or including .depend.* files if in meta+filemon mode
241 # since it will track dependencies itself. OBJS_DEPEND_GUESS is still used
242 # for _meta_filemon but not for _SKIP_DEPEND.
243 .if !defined(NO_SKIP_DEPEND) && \
244 ((!empty(.MAKEFLAGS:M-V) && empty(.MAKEFLAGS:M*DEP*)) || \
245 ${.TARGETS:M*obj} == ${.TARGETS} || \
246 ${.TARGETS:M*clean*} == ${.TARGETS} || \
247 ${.TARGETS:M*install*} == ${.TARGETS})
250 .if defined(_SKIP_DEPEND) || defined(_meta_filemon)
251 .MAKE.DEPENDFILE= /dev/null
254 kernel-depend: .depend
255 SRCS= assym.inc offset.inc vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
256 ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
257 ${MFILES:T:S/.m$/.h/}
258 DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o genoffset.o genoffset_test.o
259 DEPENDOBJS+= ${CLEAN:M*.o}
260 DEPENDFILES= ${DEPENDOBJS:O:u:C/^/.depend./}
261 .if ${MAKE_VERSION} < 20160220
264 .if defined(_SKIP_DEPEND)
265 # Don't bother reading any .meta files
266 ${DEPENDOBJS}: .NOMETA
268 # Unset these to avoid looping/statting on them later.
271 .endif # defined(_SKIP_DEPEND)
272 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
273 DEPEND_CFLAGS+= -MT${.TARGET}
274 .if !defined(_meta_filemon)
275 .if !empty(DEPEND_CFLAGS)
276 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
277 # as those are the only ones we will include.
278 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
279 CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
281 .for __depend_obj in ${DEPENDFILES}
282 .if ${MAKE_VERSION} < 20160220
283 .sinclude "${.OBJDIR}/${__depend_obj}"
285 .dinclude "${.OBJDIR}/${__depend_obj}"
288 .endif # !defined(_meta_filemon)
290 # Always run 'make depend' to generate dependencies early and to avoid the
291 # need for manually running it. For the kernel this is mostly a NOP since
292 # all dependencies are correctly added or accounted for. This is mostly to
293 # ensure downstream uses of kernel-depend are handled.
294 beforebuild: kernel-depend
296 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
297 # For meta+filemon the .meta file is checked for since it is the dependency
299 .for __obj in ${DEPENDOBJS:O:u}
300 .if defined(_meta_filemon)
301 _depfile= ${.OBJDIR}/${__obj}.meta
303 _depfile= ${.OBJDIR}/.depend.${__obj}
305 .if !exists(${_depfile})
306 .if ${SYSTEM_OBJS:M${__obj}}
307 ${__obj}: ${OBJS_DEPEND_GUESS}
309 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
310 .elif defined(_meta_filemon)
311 # For meta mode we still need to know which file to depend on to avoid
312 # ambiguous suffix transformation rules from .PATH. Meta mode does not
313 # use .depend files. We really only need source files, not headers since
314 # they are typically in SRCS/beforebuild already. For target-specific
315 # guesses do include headers though since they may not be in SRCS.
316 .if ${SYSTEM_OBJS:M${__obj}}
317 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
319 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
320 .endif # !exists(${_depfile})
323 .NOPATH: .depend ${DEPENDFILES}
325 .depend: .PRECIOUS ${SRCS}
328 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
329 _ILINKS+= ${MACHINE_CPUARCH}
331 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
335 # Ensure that the link exists without depending on it when it exists.
336 .for _link in ${_ILINKS}
337 .if !exists(${.OBJDIR}/${_link})
338 ${SRCS} ${CLEAN:M*.o}: ${_link}
343 @case ${.TARGET} in \
345 path=${S}/${MACHINE}/include ;; \
347 path=${S}/${.TARGET}/include ;; \
349 ${ECHO} ${.TARGET} "->" $$path ; \
350 ln -fns $$path ${.TARGET}
352 # .depend needs include links so we remove them only together.
353 kernel-cleandepend: .PHONY
354 rm -f .depend .depend.* ${_ILINKS}
357 @[ -f .depend ] || { echo "you must make depend first"; exit 1; }
358 sh $S/conf/systags.sh
360 kernel-install: .PHONY
361 @if [ ! -f ${KERNEL_KO} ] ; then \
362 echo "You must build a kernel first." ; \
365 .if exists(${DESTDIR}${KODIR})
366 -thiskernel=`sysctl -n kern.bootfile` ; \
367 if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
368 chflags -R noschg ${DESTDIR}${KODIR} ; \
369 rm -rf ${DESTDIR}${KODIR} ; \
370 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
372 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
373 chflags -R noschg ${DESTDIR}${KODIR}.old ; \
374 rm -rf ${DESTDIR}${KODIR}.old ; \
376 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
377 if [ -n "${KERN_DEBUGDIR}" -a \
378 -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
379 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
380 mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
382 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
385 mkdir -p ${DESTDIR}${KODIR}
386 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
387 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
388 mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
389 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
391 .if defined(KERNEL_EXTRA_INSTALL)
392 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
398 @-chflags -R noschg ${DESTDIR}${KODIR}
399 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
400 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
401 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
404 config.o env.o hints.o vers.o vnode_if.o:
408 .if ${MK_REPRODUCIBLE_BUILD} != "no"
411 vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
412 MAKE="${MAKE}" sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
414 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
415 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
417 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
419 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
420 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
422 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
424 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
426 .if ${MFS_IMAGE:Uno} != "no"
427 .if empty(MD_ROOT_SIZE_CONFIGURED)
428 # Generate an object file from the file system image to embed in the kernel
429 # via linking. Make sure the contents are in the mfs section and rename the
430 # start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
432 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
433 ${OBJCOPY} --input-target binary \
434 --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
435 --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
436 ${MFS_IMAGE} ${.TARGET}
438 --rename-section .data=mfs,contents,alloc,load,readonly,data \
440 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
442 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
444 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
449 # XXX strictly, everything depends on Makefile because changes to ${PROF}
450 # only appear there, but we don't handle that.