xref: /freebsd/sys/conf/kern.post.mk (revision 5ab1c5846ff41be24b1f6beb0317bf8258cd4409)
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.if defined(DTS) || defined(DTSO) || defined(FDT_DTS_FILE)
12.include "dtb.build.mk"
13
14KERNEL_EXTRA+=	${DTB} ${DTBO}
15CLEAN+=		${DTB} ${DTBO}
16
17kernel-install: _dtbinstall
18.ORDER: beforeinstall _dtbinstall
19.endif
20
21# In case the config had a makeoptions DESTDIR...
22.if defined(DESTDIR)
23MKMODULESENV+=	DESTDIR="${DESTDIR}"
24.endif
25SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;:tA}
26MKMODULESENV+=	KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
27MKMODULESENV+=  MODULE_TIED=yes
28
29.if defined(CONF_CFLAGS)
30MKMODULESENV+=	CONF_CFLAGS="${CONF_CFLAGS}"
31.endif
32
33.if defined(WITH_CTF)
34MKMODULESENV+=	WITH_CTF="${WITH_CTF}"
35.endif
36
37.if defined(WITH_EXTRA_TCP_STACKS)
38MKMODULESENV+=	WITH_EXTRA_TCP_STACKS="${WITH_EXTRA_TCP_STACKS}"
39.endif
40
41.if defined(KCSAN_ENABLED)
42MKMODULESENV+=	KCSAN_ENABLED="yes"
43.endif
44
45.if defined(SAN_CFLAGS)
46MKMODULESENV+=	SAN_CFLAGS="${SAN_CFLAGS}"
47.endif
48
49.if defined(GCOV_CFLAGS)
50MKMODULESENV+=	GCOV_CFLAGS="${GCOV_CFLAGS}"
51.endif
52
53# Allow overriding the kernel debug directory, so kernel and user debug may be
54# installed in different directories. Setting it to "" restores the historical
55# behavior of installing debug files in the kernel directory.
56KERN_DEBUGDIR?=	${DEBUGDIR}
57
58.MAIN: all
59
60.if !defined(NO_MODULES)
61# Default prefix used for modules installed from ports
62LOCALBASE?=	/usr/local
63
64LOCAL_MODULES_DIR?= ${LOCALBASE}/sys/modules
65
66# Default to installing all modules installed by ports unless overridden
67# by the user.
68.if !defined(LOCAL_MODULES) && exists(${LOCAL_MODULES_DIR})
69LOCAL_MODULES!= ls ${LOCAL_MODULES_DIR}
70.endif
71.endif
72
73.for target in all clean cleandepend cleandir clobber depend install \
74    ${_obj} reinstall tags
75${target}: kernel-${target}
76.if !defined(NO_MODULES)
77${target}: modules-${target}
78modules-${target}:
79.if !defined(MODULES_WITH_WORLD) && exists($S/modules)
80	cd $S/modules; ${MKMODULESENV} ${MAKE} \
81	    ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
82.endif
83.for module in ${LOCAL_MODULES}
84	@${ECHODIR} "===> ${module} (${target:S/^reinstall$/install/:S/^clobber$/cleandir/})"
85	@cd ${LOCAL_MODULES_DIR}/${module}; ${MKMODULESENV} ${MAKE} \
86	    DIRPRFX="${module}/" \
87	    ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
88.endfor
89.endif
90.endfor
91
92# Handle ports (as defined by the user) that build kernel modules
93.if !defined(NO_MODULES) && defined(PORTS_MODULES)
94#
95# The ports tree needs some environment variables defined to match the new kernel
96#
97# SRC_BASE is how the ports tree refers to the location of the base source files
98.if !defined(SRC_BASE)
99SRC_BASE=	${SYSDIR:H:tA}
100.endif
101# OSVERSION is used by some ports to determine build options
102.if !defined(OSRELDATE)
103# Definition copied from src/Makefile.inc1
104OSRELDATE!=	awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
105		    ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
106.endif
107# Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
108#
109# Ports search for some dependencies in PATH, so add the location of the
110# installed files
111WRKDIRPREFIX?=	${.OBJDIR}
112PORTSMODULESENV=\
113	env \
114	-u CC \
115	-u CXX \
116	-u CPP \
117	-u MAKESYSPATH \
118	-u MK_AUTO_OBJ \
119	-u MAKEOBJDIR \
120	MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
121	SYSDIR=${SYSDIR} \
122	PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
123	SRC_BASE=${SRC_BASE} \
124	OSVERSION=${OSRELDATE} \
125	WRKDIRPREFIX=${WRKDIRPREFIX}
126
127# The WRKDIR needs to be cleaned before building, and trying to change the target
128# with a :C pattern below results in install -> instclean
129all:
130.for __i in ${PORTS_MODULES}
131	@${ECHO} "===> Ports module ${__i} (all)"
132	cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
133.endfor
134
135.for __target in install reinstall clean
136${__target}: ports-${__target}
137ports-${__target}:
138.for __i in ${PORTS_MODULES}
139	@${ECHO} "===> Ports module ${__i} (${__target})"
140	cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/(re)?install/deinstall reinstall/}
141.endfor
142.endfor
143.endif
144
145.ORDER: kernel-install modules-install
146
147beforebuild: .PHONY
148kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
149
150kernel-cleandir: kernel-clean kernel-cleandepend
151
152kernel-clobber:
153	find . -maxdepth 1 ! -type d ! -name version -delete
154
155kernel-obj:
156
157.if !defined(NO_MODULES)
158modules: modules-all
159modules-depend: beforebuild
160modules-all: beforebuild
161
162.if !defined(NO_MODULES_OBJ)
163modules-all modules-depend: modules-obj
164.endif
165.endif
166
167.if !defined(DEBUG)
168FULLKERNEL=	${KERNEL_KO}
169.else
170FULLKERNEL=	${KERNEL_KO}.full
171${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
172	${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
173	    ${FULLKERNEL} ${.TARGET}
174${KERNEL_KO}.debug: ${FULLKERNEL}
175	${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
176install.debug reinstall.debug: gdbinit
177	cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
178
179# Install gdbinit files for kernel debugging.
180gdbinit:
181	grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
182	    sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
183	cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
184.if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
185	cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
186	    ${.CURDIR}/gdbinit.machine
187.endif
188.endif
189
190${FULLKERNEL}: ${SYSTEM_DEP} vers.o
191	@rm -f ${.TARGET}
192	@echo linking ${.TARGET}
193	${SYSTEM_LD}
194.if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
195	@sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
196.endif
197.if ${MK_CTF} != "no"
198	@echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
199	@${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
200.endif
201.if !defined(DEBUG)
202	${OBJCOPY} --strip-debug ${.TARGET}
203.endif
204	${SYSTEM_LD_TAIL}
205
206OBJS_DEPEND_GUESS+=	offset.inc assym.inc vnode_if.h ${BEFORE_DEPEND:M*.h} \
207			${MFILES:T:S/.m$/.h/}
208
209.for mfile in ${MFILES}
210# XXX the low quality .m.o rules gnerated by config are normally used
211# instead of the .m.c rules here.
212${mfile:T:S/.m$/.c/}: ${mfile}
213	${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
214${mfile:T:S/.m$/.h/}: ${mfile}
215	${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
216.endfor
217
218kernel-clean:
219	rm -f *.o *.so *.pico *.ko *.s eddep errs \
220	    ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
221	    tags vers.c \
222	    vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
223	    ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
224	    ${CLEAN}
225
226# This is a hack.  BFD "optimizes" away dynamic mode if there are no
227# dynamic references.  We could probably do a '-Bforcedynamic' mode like
228# in the a.out ld.  For now, this works.
229HACK_EXTRA_FLAGS?= -shared
230hack.pico: Makefile
231	:> hack.c
232	${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
233	rm -f hack.c
234
235offset.inc: $S/kern/genoffset.sh genoffset.o
236	NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genoffset.sh genoffset.o > ${.TARGET}
237
238genoffset.o: $S/kern/genoffset.c
239	${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/kern/genoffset.c
240
241# genoffset_test.o is not actually used for anything - the point of compiling it
242# is to exercise the CTASSERT that checks that the offsets in the offset.inc
243# _lite struct(s) match those in the original(s).
244genoffset_test.o: $S/kern/genoffset.c offset.inc
245	${CC} -c ${CFLAGS:N-flto:N-fno-common} -DOFFSET_TEST \
246	    $S/kern/genoffset.c -o ${.TARGET}
247
248assym.inc: $S/kern/genassym.sh genassym.o genoffset_test.o
249	NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
250
251genassym.o: $S/$M/$M/genassym.c  offset.inc
252	${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/$M/$M/genassym.c
253
254OBJS_DEPEND_GUESS+= opt_global.h
255genoffset.o genassym.o vers.o: opt_global.h
256
257.if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
258_meta_filemon=	1
259.endif
260# Skip reading .depend when not needed to speed up tree-walks and simple
261# lookups.  For install, only do this if no other targets are specified.
262# Also skip generating or including .depend.* files if in meta+filemon mode
263# since it will track dependencies itself.  OBJS_DEPEND_GUESS is still used
264# for _meta_filemon but not for _SKIP_DEPEND.
265.if !defined(NO_SKIP_DEPEND) && \
266    ((!empty(.MAKEFLAGS:M-V) && empty(.MAKEFLAGS:M*DEP*)) || \
267    ${.TARGETS:M*obj} == ${.TARGETS} || \
268    ${.TARGETS:M*clean*} == ${.TARGETS} || \
269    ${.TARGETS:M*install*} == ${.TARGETS})
270_SKIP_DEPEND=	1
271.endif
272.if defined(_SKIP_DEPEND) || defined(_meta_filemon)
273.MAKE.DEPENDFILE=	/dev/null
274.endif
275
276kernel-depend: .depend
277SRCS=	assym.inc offset.inc vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
278	${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
279	${MFILES:T:S/.m$/.h/}
280DEPENDOBJS+=	${SYSTEM_OBJS} genassym.o genoffset.o genoffset_test.o
281DEPENDOBJS+=	${CLEAN:M*.o}
282DEPENDFILES=	${DEPENDOBJS:O:u:C/^/.depend./}
283.if ${MAKE_VERSION} < 20160220
284DEPEND_MP?=	-MP
285.endif
286.if defined(_SKIP_DEPEND)
287# Don't bother reading any .meta files
288${DEPENDOBJS}:	.NOMETA
289.depend:	.NOMETA
290# Unset these to avoid looping/statting on them later.
291.undef DEPENDOBJS
292.undef DEPENDFILES
293.endif	# defined(_SKIP_DEPEND)
294DEPEND_CFLAGS+=	-MD ${DEPEND_MP} -MF.depend.${.TARGET}
295DEPEND_CFLAGS+=	-MT${.TARGET}
296.if !defined(_meta_filemon)
297.if !empty(DEPEND_CFLAGS)
298# Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
299# as those are the only ones we will include.
300DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
301CFLAGS+=	${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
302.endif
303.for __depend_obj in ${DEPENDFILES}
304.if ${MAKE_VERSION} < 20160220
305.sinclude "${.OBJDIR}/${__depend_obj}"
306.else
307.dinclude "${.OBJDIR}/${__depend_obj}"
308.endif
309.endfor
310.endif	# !defined(_meta_filemon)
311
312# Always run 'make depend' to generate dependencies early and to avoid the
313# need for manually running it.  For the kernel this is mostly a NOP since
314# all dependencies are correctly added or accounted for.  This is mostly to
315# ensure downstream uses of kernel-depend are handled.
316beforebuild: kernel-depend
317
318# Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
319# For meta+filemon the .meta file is checked for since it is the dependency
320# file used.
321.for __obj in ${DEPENDOBJS:O:u}
322.if defined(_meta_filemon)
323_depfile=	${.OBJDIR}/${__obj}.meta
324.else
325_depfile=	${.OBJDIR}/.depend.${__obj}
326.endif
327.if !exists(${_depfile})
328.if ${SYSTEM_OBJS:M${__obj}}
329${__obj}: ${OBJS_DEPEND_GUESS}
330.endif
331${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
332.elif defined(_meta_filemon)
333# For meta mode we still need to know which file to depend on to avoid
334# ambiguous suffix transformation rules from .PATH.  Meta mode does not
335# use .depend files.  We really only need source files, not headers since
336# they are typically in SRCS/beforebuild already.  For target-specific
337# guesses do include headers though since they may not be in SRCS.
338.if ${SYSTEM_OBJS:M${__obj}}
339${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
340.endif
341${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
342.endif	# !exists(${_depfile})
343.endfor
344
345.NOPATH: .depend ${DEPENDFILES}
346
347.depend: .PRECIOUS ${SRCS}
348
349.if ${COMPILER_TYPE} == "clang" || \
350    (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 60000)
351_MAP_DEBUG_PREFIX= yes
352.endif
353
354_ILINKS= machine
355.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
356_ILINKS+= ${MACHINE_CPUARCH}
357.endif
358.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
359_ILINKS+= x86
360.endif
361
362# Ensure that the link exists without depending on it when it exists.
363# Ensure that debug info references the path in the source tree.
364.for _link in ${_ILINKS}
365.if !exists(${.OBJDIR}/${_link})
366${SRCS} ${DEPENDOBJS}: ${_link}
367.endif
368.if defined(_MAP_DEBUG_PREFIX)
369.if ${_link} == "machine"
370CFLAGS+= -fdebug-prefix-map=./machine=${SYSDIR}/${MACHINE}/include
371.else
372CFLAGS+= -fdebug-prefix-map=./${_link}=${SYSDIR}/${_link}/include
373.endif
374.endif
375.endfor
376
377${_ILINKS}:
378	@case ${.TARGET} in \
379	machine) \
380		path=${S}/${MACHINE}/include ;; \
381	*) \
382		path=${S}/${.TARGET}/include ;; \
383	esac ; \
384	${ECHO} ${.TARGET} "->" $$path ; \
385	ln -fns $$path ${.TARGET}
386
387# .depend needs include links so we remove them only together.
388kernel-cleandepend: .PHONY
389	rm -f .depend .depend.* ${_ILINKS}
390
391kernel-tags:
392	@[ -f .depend ] || { echo "you must make depend first"; exit 1; }
393	sh $S/conf/systags.sh
394
395kernel-install: .PHONY
396	@if [ ! -f ${KERNEL_KO} ] ; then \
397		echo "You must build a kernel first." ; \
398		exit 1 ; \
399	fi
400.if exists(${DESTDIR}${KODIR})
401	-thiskernel=`sysctl -n kern.bootfile` ; \
402	if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
403		chflags -R noschg ${DESTDIR}${KODIR} ; \
404		rm -rf ${DESTDIR}${KODIR} ; \
405		rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
406	else \
407		if [ -d ${DESTDIR}${KODIR}.old ] ; then \
408			chflags -R noschg ${DESTDIR}${KODIR}.old ; \
409			rm -rf ${DESTDIR}${KODIR}.old ; \
410		fi ; \
411		mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
412		if [ -n "${KERN_DEBUGDIR}" -a \
413		     -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
414			rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
415			mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
416		fi ; \
417		sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
418	fi
419.endif
420	mkdir -p ${DESTDIR}${KODIR}
421	${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
422.if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
423	mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
424	${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
425.endif
426.if defined(KERNEL_EXTRA_INSTALL)
427	${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
428.endif
429
430
431
432kernel-reinstall:
433	@-chflags -R noschg ${DESTDIR}${KODIR}
434	${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
435.if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
436	${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
437.endif
438
439config.o env.o hints.o vers.o vnode_if.o:
440	${NORMAL_C}
441	${NORMAL_CTFCONVERT}
442
443.if ${MK_REPRODUCIBLE_BUILD} != "no"
444REPRO_FLAG="-R"
445.endif
446vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
447	MAKE="${MAKE}" sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
448
449vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
450	${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
451
452vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
453    $S/kern/vnode_if.src
454vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
455	${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
456vnode_if_newproto.h:
457	${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
458vnode_if_typedef.h:
459	${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
460
461.if ${MFS_IMAGE:Uno} != "no"
462.if empty(MD_ROOT_SIZE_CONFIGURED)
463# Generate an object file from the file system image to embed in the kernel
464# via linking. Make sure the contents are in the mfs section and rename the
465# start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
466# respectively.
467embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
468	${OBJCOPY} --input-target binary \
469	    --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
470	    --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
471	    ${MFS_IMAGE} ${.TARGET}
472	${OBJCOPY} \
473	    --rename-section .data=mfs,contents,alloc,load,readonly,data \
474	    --redefine-sym \
475		_binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
476	    --redefine-sym \
477		_binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
478	    --redefine-sym \
479		_binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
480	    ${.TARGET}
481.endif
482.endif
483
484# XXX strictly, everything depends on Makefile because changes to ${PROF}
485# only appear there, but we don't handle that.
486
487.include "kern.mk"
488