1# $FreeBSD: stable/11/sys/conf/kern.post.mk 360494 2020-04-30 13:48:58Z kevans $
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)
13MKMODULESENV+=	DESTDIR="${DESTDIR}"
14.endif
15SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;:tA}
16MKMODULESENV+=	KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
17
18.if defined(CONF_CFLAGS)
19MKMODULESENV+=	CONF_CFLAGS="${CONF_CFLAGS}"
20.endif
21
22.if defined(WITH_CTF)
23MKMODULESENV+=	WITH_CTF="${WITH_CTF}"
24.endif
25
26.if defined(WITH_EXTRA_TCP_STACKS)
27MKMODULESENV+=	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.
33KERN_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}
42modules-${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
54LOCALBASE?=	/usr/local
55# SRC_BASE is how the ports tree refers to the location of the base source files
56.if !defined(SRC_BASE)
57SRC_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
62OSRELDATE!=	awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
63		    ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
64.endif
65# Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
66WRKDIRPREFIX?=	${.OBJDIR}
67PORTSMODULESENV=\
68	env \
69	-u CC \
70	-u CXX \
71	-u CPP \
72	-u MAKESYSPATH \
73	-u MK_AUTO_OBJ \
74	-u MAKEOBJDIR \
75	MAKEFLAGS="${MAKEFLAGS:M*:tW:S/^-m /-m_/g:S/ -m / -m_/g:tw:N-m_*:NMK_AUTO_OBJ=*}" \
76	SYSDIR=${SYSDIR} \
77	PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
78	SRC_BASE=${SRC_BASE} \
79	OSVERSION=${OSRELDATE} \
80	WRKDIRPREFIX=${WRKDIRPREFIX}
81
82# The WRKDIR needs to be cleaned before building, and trying to change the target
83# with a :C pattern below results in install -> instclean
84all:
85.for __i in ${PORTS_MODULES}
86	@${ECHO} "===> Ports module ${__i} (all)"
87	cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
88.endfor
89
90.for __target in install reinstall clean
91${__target}: ports-${__target}
92ports-${__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
102beforebuild: .PHONY
103kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
104
105kernel-cleandir: kernel-clean kernel-cleandepend
106
107kernel-clobber:
108	find . -maxdepth 1 ! -type d ! -name version -delete
109
110kernel-obj:
111
112.if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
113modules: modules-all
114modules-depend: beforebuild
115modules-all: beforebuild
116
117.if !defined(NO_MODULES_OBJ)
118modules-all modules-depend: modules-obj
119.endif
120.endif
121
122.if !defined(DEBUG)
123FULLKERNEL=	${KERNEL_KO}
124.else
125FULLKERNEL=	${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}
131install.debug reinstall.debug: gdbinit
132	cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
133
134# Install gdbinit files for kernel debugging.
135gdbinit:
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
161OBJS_DEPEND_GUESS+=	assym.s vnode_if.h ${BEFORE_DEPEND:M*.h} \
162			${MFILES:T:S/.m$/.h/}
163LNFILES=	${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
174kernel-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
182lint: ${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.
189HACK_EXTRA_FLAGS?= -shared
190hack.pico: Makefile
191	:> hack.c
192	${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
193	rm -f hack.c
194
195assym.s: $S/kern/genassym.sh genassym.o
196	NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
197
198genassym.o: $S/$M/$M/genassym.c
199	${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon $S/$M/$M/genassym.c
200
201OBJS_DEPEND_GUESS+= opt_global.h
202genassym.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
219kernel-depend: .depend
220SRCS=	assym.s vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
221	${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
222	${MFILES:T:S/.m$/.h/}
223DEPENDFILES=	.depend .depend.*
224DEPENDOBJS+=	${SYSTEM_OBJS} genassym.o
225DEPENDOBJS+=	${CLEAN:M*.o}
226DEPENDFILES_OBJS=	${DEPENDOBJS:O:u:C/^/.depend./}
227.if ${MAKE_VERSION} < 20160220
228DEPEND_MP?=	-MP
229.endif
230DEPEND_CFLAGS+=	-MD ${DEPEND_MP} -MF.depend.${.TARGET}
231DEPEND_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.
236DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
237CFLAGS+=	${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
238.else
239CFLAGS+=	${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.
256beforebuild: 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 $$path ${.TARGET}
309
310# .depend needs include links so we remove them only together.
311kernel-cleandepend: .PHONY
312	rm -f ${DEPENDFILES} ${_ILINKS}
313
314kernel-tags:
315	@ls .depend.* > /dev/null 2>&1 || \
316	    { echo "you must make all first"; exit 1; }
317	sh $S/conf/systags.sh
318
319kernel-install: .PHONY
320	@if [ ! -f ${KERNEL_KO} ] ; then \
321		echo "You must build a kernel first." ; \
322		exit 1 ; \
323	fi
324.if exists(${DESTDIR}${KODIR})
325	-thiskernel=`sysctl -n kern.bootfile` ; \
326	if [ ! "`dirname "$$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
356kernel-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
363config.o env.o hints.o vers.o vnode_if.o:
364	${NORMAL_C}
365	${NORMAL_CTFCONVERT}
366
367config.ln env.ln hints.ln vers.ln vnode_if.ln:
368	${NORMAL_LINT}
369
370.if ${MK_REPRODUCIBLE_BUILD} != "no"
371REPRO_FLAG="-r"
372.endif
373vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
374	MAKE=${MAKE} sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
375
376vnode_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
379vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
380    $S/kern/vnode_if.src
381vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
382	${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
383vnode_if_newproto.h:
384	${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
385vnode_if_typedef.h:
386	${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
387
388.if ${MFS_IMAGE:Uno} != "no"
389.if empty(MD_ROOT_SIZE_CONFIGURED)
390# Generate an object file from the file system image to embed in the kernel
391# via linking. Make sure the contents are in the mfs section and rename the
392# start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
393# respectively.
394embedfs_${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"
415