FreeBSD/Linux Kernel Cross Reference
sys/conf/kern.post.mk
1 # $FreeBSD$
2
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.
6 #
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.
10
11 # In case the config had a makeoptions DESTDIR...
12 .if defined(DESTDIR)
13 MKMODULESENV+= DESTDIR="${DESTDIR}"
14 .endif
15 SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;:tA}
16 MKMODULESENV+= KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
17
18 .if defined(CONF_CFLAGS)
19 MKMODULESENV+= CONF_CFLAGS="${CONF_CFLAGS}"
20 .endif
21
22 .if defined(WITH_CTF)
23 MKMODULESENV+= WITH_CTF="${WITH_CTF}"
24 .endif
25
26 .if defined(WITH_EXTRA_TCP_STACKS)
27 MKMODULESENV+= WITH_EXTRA_TCP_STACKS="${WITH_EXTRA_TCP_STACKS}"
28 .endif
29
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}
34
35 .MAIN: all
36
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}
42 modules-${target}:
43 cd $S/modules; ${MKMODULESENV} ${MAKE} \
44 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
45 .endif
46 .endfor
47
48 # Handle ports (as defined by the user) that build kernel modules
49 .if !defined(NO_MODULES) && defined(PORTS_MODULES)
50 #
51 # The ports tree needs some environment variables defined to match the new kernel
52 #
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}
58 .endif
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 $$3 }' \
63 ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
64 .endif
65 # Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
66 WRKDIRPREFIX?= ${.OBJDIR}
67 PORTSMODULESENV=\
68 env \
69 -u CC \
70 -u CXX \
71 -u CPP \
72 -u MAKESYSPATH \
73 -u MK_AUTO_OBJ \
74 -u MAKEOBJDIR \
75 MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
76 SYSDIR=${SYSDIR} \
77 PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
78 SRC_BASE=${SRC_BASE} \
79 OSVERSION=${OSRELDATE} \
80 WRKDIRPREFIX=${WRKDIRPREFIX}
81
82 # The WRKDIR needs to be cleaned before building, and trying to change the target
83 # with a :C pattern below results in install -> instclean
84 all:
85 .for __i in ${PORTS_MODULES}
86 @${ECHO} "===> Ports module ${__i} (all)"
87 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
88 .endfor
89
90 .for __target in install reinstall clean
91 ${__target}: ports-${__target}
92 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/install/deinstall reinstall/:C/reinstall/deinstall reinstall/}
96 .endfor
97 .endfor
98 .endif
99
100 .ORDER: kernel-install modules-install
101
102 beforebuild: .PHONY
103 kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
104
105 kernel-cleandir: kernel-clean kernel-cleandepend
106
107 kernel-clobber:
108 find . -maxdepth 1 ! -type d ! -name version -delete
109
110 kernel-obj:
111
112 .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
113 modules: modules-all
114 modules-depend: beforebuild
115 modules-all: beforebuild
116
117 .if !defined(NO_MODULES_OBJ)
118 modules-all modules-depend: modules-obj
119 .endif
120 .endif
121
122 .if !defined(DEBUG)
123 FULLKERNEL= ${KERNEL_KO}
124 .else
125 FULLKERNEL= ${KERNEL_KO}.full
126 ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
127 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
128 ${FULLKERNEL} ${.TARGET}
129 ${KERNEL_KO}.debug: ${FULLKERNEL}
130 ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
131 install.debug reinstall.debug: gdbinit
132 cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
133
134 # Install gdbinit files for kernel debugging.
135 gdbinit:
136 grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
137 sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
138 cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
139 .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
140 cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
141 ${.CURDIR}/gdbinit.machine
142 .endif
143 .endif
144
145 ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
146 @rm -f ${.TARGET}
147 @echo linking ${.TARGET}
148 ${SYSTEM_LD}
149 .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
150 @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
151 .endif
152 .if ${MK_CTF} != "no"
153 @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
154 @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
155 .endif
156 .if !defined(DEBUG)
157 ${OBJCOPY} --strip-debug ${.TARGET}
158 .endif
159 ${SYSTEM_LD_TAIL}
160
161 OBJS_DEPEND_GUESS+= assym.s vnode_if.h ${BEFORE_DEPEND:M*.h} \
162 ${MFILES:T:S/.m$/.h/}
163 LNFILES= ${CFILES:T:S/.c$/.ln/}
164
165 .for mfile in ${MFILES}
166 # XXX the low quality .m.o rules gnerated by config are normally used
167 # instead of the .m.c rules here.
168 ${mfile:T:S/.m$/.c/}: ${mfile}
169 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
170 ${mfile:T:S/.m$/.h/}: ${mfile}
171 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
172 .endfor
173
174 kernel-clean:
175 rm -f *.o *.so *.pico *.ko *.s eddep errs \
176 ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
177 linterrs tags vers.c \
178 vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
179 ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
180 ${CLEAN}
181
182 lint: ${LNFILES}
183 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC} 2>&1 | \
184 tee -a linterrs
185
186 # This is a hack. BFD "optimizes" away dynamic mode if there are no
187 # dynamic references. We could probably do a '-Bforcedynamic' mode like
188 # in the a.out ld. For now, this works.
189 HACK_EXTRA_FLAGS?= -shared
190 hack.pico: Makefile
191 :> hack.c
192 ${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
193 rm -f hack.c
194
195 assym.s: $S/kern/genassym.sh genassym.o
196 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
197
198 genassym.o: $S/$M/$M/genassym.c
199 ${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon $S/$M/$M/genassym.c
200
201 OBJS_DEPEND_GUESS+= opt_global.h
202 genassym.o vers.o: opt_global.h
203
204 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
205 _meta_filemon= 1
206 .endif
207 # Skip reading .depend when not needed to speed up tree-walks and simple
208 # lookups. For install, only do this if no other targets are specified.
209 # Also skip generating or including .depend.* files if in meta+filemon mode
210 # since it will track dependencies itself. OBJS_DEPEND_GUESS is still used.
211 .if !empty(.MAKEFLAGS:M-V${_V_READ_DEPEND}) || make(*obj) || \
212 ${.TARGETS:M*clean*} == ${.TARGETS} || \
213 ${.TARGETS:M*install*} == ${.TARGETS} || \
214 defined(_meta_filemon)
215 _SKIP_READ_DEPEND= 1
216 .MAKE.DEPENDFILE= /dev/null
217 .endif
218
219 kernel-depend: .depend
220 SRCS= assym.s vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
221 ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
222 ${MFILES:T:S/.m$/.h/}
223 DEPENDFILES= .depend .depend.*
224 DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o
225 DEPENDOBJS+= ${CLEAN:M*.o}
226 DEPENDFILES_OBJS= ${DEPENDOBJS:O:u:C/^/.depend./}
227 .if ${MAKE_VERSION} < 20160220
228 DEPEND_MP?= -MP
229 .endif
230 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
231 DEPEND_CFLAGS+= -MT${.TARGET}
232 .if !defined(_meta_filemon)
233 .if defined(.PARSEDIR)
234 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
235 # as those are the only ones we will include.
236 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
237 CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
238 .else
239 CFLAGS+= ${DEPEND_CFLAGS}
240 .endif
241 .if !defined(_SKIP_READ_DEPEND)
242 .for __depend_obj in ${DEPENDFILES_OBJS}
243 .if ${MAKE_VERSION} < 20160220
244 .sinclude "${.OBJDIR}/${__depend_obj}"
245 .else
246 .dinclude "${.OBJDIR}/${__depend_obj}"
247 .endif
248 .endfor
249 .endif # !defined(_SKIP_READ_DEPEND)
250 .endif # !defined(_meta_filemon)
251
252 # Always run 'make depend' to generate dependencies early and to avoid the
253 # need for manually running it. For the kernel this is mostly a NOP since
254 # all dependencies are correctly added or accounted for. This is mostly to
255 # ensure downstream uses of kernel-depend are handled.
256 beforebuild: kernel-depend
257
258 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
259 # For meta+filemon the .meta file is checked for since it is the dependency
260 # file used.
261 .for __obj in ${DEPENDOBJS:O:u}
262 .if (defined(_meta_filemon) && !exists(${.OBJDIR}/${__obj}.meta)) || \
263 (!defined(_meta_filemon) && !exists(${.OBJDIR}/.depend.${__obj}))
264 .if ${SYSTEM_OBJS:M${__obj}}
265 ${__obj}: ${OBJS_DEPEND_GUESS}
266 .endif
267 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
268 .elif defined(_meta_filemon)
269 # For meta mode we still need to know which file to depend on to avoid
270 # ambiguous suffix transformation rules from .PATH. Meta mode does not
271 # use .depend files. We really only need source files, not headers since
272 # they are typically in SRCS/beforebuild already. For target-specific
273 # guesses do include headers though since they may not be in SRCS.
274 .if ${SYSTEM_OBJS:M${__obj}}
275 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
276 .endif
277 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
278 .endif
279 .endfor
280
281 .NOPATH: .depend ${DEPENDFILES_OBJS}
282
283 .depend: .PRECIOUS ${SRCS}
284
285 _ILINKS= machine
286 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
287 _ILINKS+= ${MACHINE_CPUARCH}
288 .endif
289 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
290 _ILINKS+= x86
291 .endif
292
293 # Ensure that the link exists without depending on it when it exists.
294 .for _link in ${_ILINKS}
295 .if !exists(${.OBJDIR}/${_link})
296 ${SRCS} ${DEPENDOBJS}: ${_link}
297 .endif
298 .endfor
299
300 ${_ILINKS}:
301 @case ${.TARGET} in \
302 machine) \
303 path=${S}/${MACHINE}/include ;; \
304 *) \
305 path=${S}/${.TARGET}/include ;; \
306 esac ; \
307 ${ECHO} ${.TARGET} "->" $$path ; \
308 ln -fhs $$path ${.TARGET}
309
310 # .depend needs include links so we remove them only together.
311 kernel-cleandepend: .PHONY
312 rm -f ${DEPENDFILES} ${_ILINKS}
313
314 kernel-tags:
315 @ls .depend.* > /dev/null 2>&1 || \
316 { echo "you must make all first"; exit 1; }
317 sh $S/conf/systags.sh
318
319 kernel-install: .PHONY
320 @if [ ! -f ${KERNEL_KO} ] ; then \
321 echo "You must build a kernel first." ; \
322 exit 1 ; \
323 fi
324 .if exists(${DESTDIR}${KODIR})
325 -thiskernel=`sysctl -n kern.bootfile` ; \
326 if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
327 chflags -R noschg ${DESTDIR}${KODIR} ; \
328 rm -rf ${DESTDIR}${KODIR} ; \
329 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
330 else \
331 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
332 chflags -R noschg ${DESTDIR}${KODIR}.old ; \
333 rm -rf ${DESTDIR}${KODIR}.old ; \
334 fi ; \
335 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
336 if [ -n "${KERN_DEBUGDIR}" -a \
337 -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
338 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
339 mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
340 fi ; \
341 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
342 fi
343 .endif
344 mkdir -p ${DESTDIR}${KODIR}
345 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
346 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
347 mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
348 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
349 .endif
350 .if defined(KERNEL_EXTRA_INSTALL)
351 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
352 .endif
353
354
355
356 kernel-reinstall:
357 @-chflags -R noschg ${DESTDIR}${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 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
361 .endif
362
363 config.o env.o hints.o vers.o vnode_if.o:
364 ${NORMAL_C}
365 ${NORMAL_CTFCONVERT}
366
367 config.ln env.ln hints.ln vers.ln vnode_if.ln:
368 ${NORMAL_LINT}
369
370 .if ${MK_REPRODUCIBLE_BUILD} != "no"
371 REPRO_FLAG="-r"
372 .endif
373 vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
374 MAKE=${MAKE} sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
375
376 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
377 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
378
379 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
380 $S/kern/vnode_if.src
381 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
382 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
383 vnode_if_newproto.h:
384 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
385 vnode_if_typedef.h:
386 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
387
388 .if ${MFS_IMAGE:Uno} != "no"
389 .if empty(MD_ROOT_SIZE_CONFIGURED)
390 # Generate an object file from the file system image to embed in the kernel
391 # via linking. Make sure the contents are in the mfs section and rename the
392 # start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
393 # respectively.
394 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
395 ${OBJCOPY} --input-target binary \
396 --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
397 --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
398 ${MFS_IMAGE} ${.TARGET}
399 ${OBJCOPY} \
400 --rename-section .data=mfs,contents,alloc,load,readonly,data \
401 --redefine-sym \
402 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
403 --redefine-sym \
404 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
405 --redefine-sym \
406 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
407 ${.TARGET}
408 .endif
409 .endif
410
411 # XXX strictly, everything depends on Makefile because changes to ${PROF}
412 # only appear there, but we don't handle that.
413
414 .include "kern.mk"
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