xref: /freebsd/sys/conf/kern.post.mk (revision 6fd96c93c1ff811e03dc4676c9fde93d11467a20)
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)
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 $$3 }' \
63		    ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
64.endif
65# Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
66WRKDIRPREFIX?=	${.OBJDIR}
67PORTSMODULESENV=\
68	env \
69	-u CC \
70	-u CXX \
71	-u CPP \
72	PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
73	SRC_BASE=${SRC_BASE} \
74	OSVERSION=${OSRELDATE} \
75	WRKDIRPREFIX=${WRKDIRPREFIX}
76
77# The WRKDIR needs to be cleaned before building, and trying to change the target
78# with a :C pattern below results in install -> instclean
79all:
80.for __i in ${PORTS_MODULES}
81	@${ECHO} "===> Ports module ${__i} (all)"
82	cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean build
83.endfor
84
85.for __target in install reinstall clean
86${__target}: ports-${__target}
87ports-${__target}:
88.for __i in ${PORTS_MODULES}
89	@${ECHO} "===> Ports module ${__i} (${__target})"
90	cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/(re)?install/deinstall reinstall/}
91.endfor
92.endfor
93.endif
94
95.ORDER: kernel-install modules-install
96
97beforebuild: .PHONY
98kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
99
100kernel-cleandir: kernel-clean kernel-cleandepend
101
102kernel-clobber:
103	find . -maxdepth 1 ! -type d ! -name version -delete
104
105kernel-obj:
106
107.if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
108modules: modules-all
109
110.if !defined(NO_MODULES_OBJ)
111modules-all modules-depend: modules-obj
112.endif
113.endif
114
115.if !defined(DEBUG)
116FULLKERNEL=	${KERNEL_KO}
117.else
118FULLKERNEL=	${KERNEL_KO}.full
119${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
120	${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
121	    ${FULLKERNEL} ${.TARGET}
122${KERNEL_KO}.debug: ${FULLKERNEL}
123	${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
124install.debug reinstall.debug: gdbinit
125	cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
126
127# Install gdbinit files for kernel debugging.
128gdbinit:
129	grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
130	    sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
131	cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
132.if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
133	cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
134	    ${.CURDIR}/gdbinit.machine
135.endif
136.endif
137
138${FULLKERNEL}: ${SYSTEM_DEP} vers.o
139	@rm -f ${.TARGET}
140	@echo linking ${.TARGET}
141	${SYSTEM_LD}
142.if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
143	@sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
144.endif
145.if ${MK_CTF} != "no"
146	@echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
147	@${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
148.endif
149.if !defined(DEBUG)
150	${OBJCOPY} --strip-debug ${.TARGET}
151.endif
152	${SYSTEM_LD_TAIL}
153
154OBJS_DEPEND_GUESS+=	assym.s vnode_if.h ${BEFORE_DEPEND:M*.h} \
155			${MFILES:T:S/.m$/.h/}
156
157.for mfile in ${MFILES}
158# XXX the low quality .m.o rules gnerated by config are normally used
159# instead of the .m.c rules here.
160${mfile:T:S/.m$/.c/}: ${mfile}
161	${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
162${mfile:T:S/.m$/.h/}: ${mfile}
163	${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
164.endfor
165
166kernel-clean:
167	rm -f *.o *.so *.pico *.ko *.s eddep errs \
168	    ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
169	    tags vers.c \
170	    vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
171	    ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
172	    ${CLEAN}
173
174# This is a hack.  BFD "optimizes" away dynamic mode if there are no
175# dynamic references.  We could probably do a '-Bforcedynamic' mode like
176# in the a.out ld.  For now, this works.
177HACK_EXTRA_FLAGS?= -shared
178hack.pico: Makefile
179	:> hack.c
180	${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.pico
181	rm -f hack.c
182
183assym.s: $S/kern/genassym.sh genassym.o
184	NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
185
186genassym.o: $S/$M/$M/genassym.c
187	${CC} -c ${CFLAGS:N-flto:N-fno-common} $S/$M/$M/genassym.c
188
189${SYSTEM_OBJS} genassym.o vers.o: opt_global.h
190
191.if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
192_meta_filemon=	1
193.endif
194# Skip reading .depend when not needed to speed up tree-walks and simple
195# lookups.  For install, only do this if no other targets are specified.
196# Also skip generating or including .depend.* files if in meta+filemon mode
197# since it will track dependencies itself.  OBJS_DEPEND_GUESS is still used
198# for _meta_filemon but not for _SKIP_DEPEND.
199.if !defined(NO_SKIP_DEPEND) && (make(*obj) || \
200    ${.TARGETS:M*clean*} == ${.TARGETS} || \
201    ${.TARGETS:M*install*} == ${.TARGETS})
202_SKIP_DEPEND=	1
203.endif
204.if defined(_SKIP_DEPEND) || defined(_meta_filemon)
205.MAKE.DEPENDFILE=	/dev/null
206.endif
207
208kernel-depend: .depend
209SRCS=	assym.s vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
210	${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
211	${MFILES:T:S/.m$/.h/}
212DEPENDOBJS+=	${SYSTEM_OBJS} genassym.o
213DEPENDFILES=	${DEPENDOBJS:O:u:C/^/.depend./}
214.if ${MAKE_VERSION} < 20160220
215DEPEND_MP?=	-MP
216.endif
217.if defined(_SKIP_DEPEND)
218# Don't bother reading any .meta files
219${DEPENDOBJS}:	.NOMETA
220.depend:	.NOMETA
221# Unset these to avoid looping/statting on them later.
222.undef DEPENDOBJS
223.undef DEPENDFILES
224.endif	# defined(_SKIP_DEPEND)
225DEPEND_CFLAGS+=	-MD ${DEPEND_MP} -MF.depend.${.TARGET}
226DEPEND_CFLAGS+=	-MT${.TARGET}
227.if !defined(_meta_filemon)
228.if !empty(DEPEND_CFLAGS)
229# Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
230# as those are the only ones we will include.
231DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
232CFLAGS+=	${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
233.endif
234.for __depend_obj in ${DEPENDFILES}
235.if ${MAKE_VERSION} < 20160220
236.sinclude "${.OBJDIR}/${__depend_obj}"
237.else
238.dinclude "${.OBJDIR}/${__depend_obj}"
239.endif
240.endfor
241.endif	# !defined(_meta_filemon)
242
243# Always run 'make depend' to generate dependencies early and to avoid the
244# need for manually running it.  For the kernel this is mostly a NOP since
245# all dependencies are correctly added or accounted for.  This is mostly to
246# ensure downstream uses of kernel-depend are handled.
247beforebuild: kernel-depend
248
249# Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
250# For meta+filemon the .meta file is checked for since it is the dependency
251# file used.
252.for __obj in ${DEPENDOBJS:O:u}
253.if defined(_meta_filemon)
254_depfile=	${.OBJDIR}/${__obj}.meta
255.else
256_depfile=	${.OBJDIR}/.depend.${__obj}
257.endif
258.if !exists(${_depfile})
259.if ${SYSTEM_OBJS:M${__obj}}
260${__obj}: ${OBJS_DEPEND_GUESS}
261.endif
262${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
263.elif defined(_meta_filemon)
264# For meta mode we still need to know which file to depend on to avoid
265# ambiguous suffix transformation rules from .PATH.  Meta mode does not
266# use .depend files.  We really only need source files, not headers since
267# they are typically in SRCS/beforebuild already.  For target-specific
268# guesses do include headers though since they may not be in SRCS.
269.if ${SYSTEM_OBJS:M${__obj}}
270${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
271.endif
272${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
273.endif	# !exists(${_depfile})
274.endfor
275
276.NOPATH: .depend ${DEPENDFILES}
277
278.depend: .PRECIOUS ${SRCS}
279
280_ILINKS= machine
281.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
282_ILINKS+= ${MACHINE_CPUARCH}
283.endif
284.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
285_ILINKS+= x86
286.endif
287
288# Ensure that the link exists without depending on it when it exists.
289.for _link in ${_ILINKS}
290.if !exists(${.OBJDIR}/${_link})
291${SRCS} ${CLEAN:M*.o}: ${_link}
292.endif
293.endfor
294
295${_ILINKS}:
296	@case ${.TARGET} in \
297	machine) \
298		path=${S}/${MACHINE}/include ;; \
299	*) \
300		path=${S}/${.TARGET}/include ;; \
301	esac ; \
302	${ECHO} ${.TARGET} "->" $$path ; \
303	ln -fhs $$path ${.TARGET}
304
305# .depend needs include links so we remove them only together.
306kernel-cleandepend: .PHONY
307	rm -f .depend .depend.* ${_ILINKS}
308
309kernel-tags:
310	@[ -f .depend ] || { echo "you must make depend first"; exit 1; }
311	sh $S/conf/systags.sh
312
313kernel-install: .PHONY
314	@if [ ! -f ${KERNEL_KO} ] ; then \
315		echo "You must build a kernel first." ; \
316		exit 1 ; \
317	fi
318.if exists(${DESTDIR}${KODIR})
319	-thiskernel=`sysctl -n kern.bootfile` ; \
320	if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
321		chflags -R noschg ${DESTDIR}${KODIR} ; \
322		rm -rf ${DESTDIR}${KODIR} ; \
323		rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
324	else \
325		if [ -d ${DESTDIR}${KODIR}.old ] ; then \
326			chflags -R noschg ${DESTDIR}${KODIR}.old ; \
327			rm -rf ${DESTDIR}${KODIR}.old ; \
328		fi ; \
329		mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
330		if [ -n "${KERN_DEBUGDIR}" -a \
331		     -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
332			rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
333			mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
334		fi ; \
335		sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
336	fi
337.endif
338	mkdir -p ${DESTDIR}${KODIR}
339	${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
340.if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
341	mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
342	${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
343.endif
344.if defined(KERNEL_EXTRA_INSTALL)
345	${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
346.endif
347
348
349
350kernel-reinstall:
351	@-chflags -R noschg ${DESTDIR}${KODIR}
352	${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
353.if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
354	${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
355.endif
356
357config.o env.o hints.o vers.o vnode_if.o:
358	${NORMAL_C}
359	${NORMAL_CTFCONVERT}
360
361.if ${MK_REPRODUCIBLE_BUILD} != "no"
362REPRO_FLAG="-r"
363.endif
364vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
365	MAKE="${MAKE}" sh $S/conf/newvers.sh ${REPRO_FLAG} ${KERN_IDENT}
366
367vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
368	${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
369
370vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
371    $S/kern/vnode_if.src
372vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
373	${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
374vnode_if_newproto.h:
375	${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
376vnode_if_typedef.h:
377	${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
378
379.if ${MFS_IMAGE:Uno} != "no"
380.if empty(MD_ROOT_SIZE_CONFIGURED)
381# Generate an object file from the file system image to embed in the kernel
382# via linking. Make sure the contents are in the mfs section and rename the
383# start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
384# respectively.
385embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
386	${OBJCOPY} --input-target binary \
387	    --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
388	    --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
389	    ${MFS_IMAGE} ${.TARGET}
390	${OBJCOPY} \
391	    --rename-section .data=mfs,contents,alloc,load,readonly,data \
392	    --redefine-sym \
393		_binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
394	    --redefine-sym \
395		_binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
396	    --redefine-sym \
397		_binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
398	    ${.TARGET}
399.endif
400.endif
401
402# XXX strictly, everything depends on Makefile because changes to ${PROF}
403# only appear there, but we don't handle that.
404
405.include "kern.mk"
406