1 # $NetBSD: Makefile.kern.inc,v 1.118.4.2 2009/03/27 14:50:36 msaitoh Exp $
2 #
3 # This file contains common `MI' targets and definitions and it is included
4 # at the bottom of each `MD' ${MACHINE}/conf/Makefile.${MACHINE}.
5 #
6 # Each target in this file should be protected with `if !target(target)'
7 # or `if !commands(target)' and each variable should only be conditionally
8 # assigned `VAR ?= VALUE', so that everything can be overriden.
9 #
10 # DEBUG is set to -g if debugging.
11 # PROF is set to -pg if profiling.
12 #
13 # To specify debugging, add the config line: makeoptions DEBUG="-g"
14 # A better way is to specify -g only for a few files.
15 #
16 # makeoptions DEBUGLIST="uvm* trap if_*"
17 #
18 # all ports are expected to include bsd.own.mk for toolchain settings
19
20 ##
21 ## (0) toolchain settings for things that aren't part of the standard
22 ## toolchain
23 ##
24 HOST_SH?= sh
25 DBSYM?= dbsym
26 MKDEP?= mkdep
27 STRIP?= strip
28 OBJCOPY?= objcopy
29 OBJDUMP?= objdump
30 CSCOPE?= cscope
31 MKID?= mkid
32 UUDECODE?= ${TOOL_UUDECODE:Uuudecode}
33 HEXDUMP?= ${TOOL_HEXDUMP:Uhexdump}
34 GENASSYM?= ${TOOL_GENASSYM:Ugenassym}
35 .MAKEOVERRIDES+=USETOOLS # make sure proper value is propagated
36
37 _MKMSG?= @\#
38 _MKSHMSG?= echo
39 _MKSHECHO?= echo
40 _MKMSG_CREATE?= :
41 _MKTARGET_COMPILE?= :
42 _MKTARGET_CREATE?= :
43
44 ##
45 ## (1) port independent source tree identification
46 ##
47 # source tree is located via $S relative to the compilation directory
48 .ifndef S
49 S!= cd ../../../..; pwd
50 .endif
51
52 ##
53 ## (2) compile settings
54 ##
55 ## CPPFLAGS, CFLAGS, and AFLAGS must be set in the port's Makefile
56 ##
57 INCLUDES?= -I. ${EXTRA_INCLUDES} -I${S}/../common/include -I$S/arch \
58 -I$S -nostdinc
59 CPPFLAGS+= ${INCLUDES} ${IDENT} ${PARAM} -D_KERNEL -D_KERNEL_OPT
60 DEFCOPTS?= -O2
61 COPTS?= ${DEFCOPTS}
62 COPTS+= -std=gnu99
63 DBG= # might contain unwanted -Ofoo
64 DEFWARNINGS?= yes
65 .if (${DEFWARNINGS} == "yes")
66 . if !defined(NOGCCERROR)
67 CWARNFLAGS+= -Werror
68 . endif
69 CWARNFLAGS+= -Wall -Wno-main -Wno-format-zero-length -Wpointer-arith
70 CWARNFLAGS+= -Wmissing-prototypes -Wstrict-prototypes
71 CWARNFLAGS+= -Wswitch -Wshadow
72 CWARNFLAGS+= -Wcast-qual -Wwrite-strings
73 CWARNFLAGS+= -Wno-unreachable-code
74 # Add -Wno-sign-compare. -Wsign-compare is included in -Wall as of GCC 3.3,
75 # but our sources aren't up for it yet.
76 CWARNFLAGS+= -Wno-sign-compare
77 . if (defined(HAVE_GCC) && ${HAVE_GCC} > 3) || defined(HAVE_PCC)
78 CWARNFLAGS+= -Wno-pointer-sign -Wno-attributes
79 . if ${MACHINE} == "i386" || ${MACHINE_ARCH} == "x86_64" || \
80 ${MACHINE_ARCH} == "sparc64" || ${MACHINE} == "prep"
81 CWARNFLAGS+= -Wextra -Wno-unused-parameter
82 . endif
83 . endif
84 .endif
85
86 CFLAGS+= -ffreestanding -fno-zero-initialized-in-bss
87 CFLAGS+= ${DEBUG} ${COPTS}
88 AFLAGS+= -D_LOCORE -Wa,-fatal-warnings
89
90 # XXX
91 .if defined(HAVE_GCC) && ${HAVE_GCC} > 3
92 CFLAGS+= -fno-strict-aliasing
93 .endif
94
95 .if ${USE_SSP:Uno} == "yes"
96 CFLAGS+=-fstack-protector -Wstack-protector --param ssp-buffer-size=1
97 LDFLAGS+=-fstack-protector -Wstack-protector --param ssp-buffer-size=1
98 COPTS.kern_ssp.c+= -fno-stack-protector -D__SSP__
99 .endif
100
101 # If we want the bpendtsleep: label in kern_synch.c, we need to use
102 # -fno-reorder-blocks. Don't make this a config(1) defflag without
103 # making sure this fragment remains valid.
104 .if defined(HAVE_GCC) && ${HAVE_GCC} > 3 && \
105 !empty(${CFLAGS:M-DKERN_SYNCH_BPENDTSLEEP_LABEL})
106 COPTS.kern_synch.c+= -fno-reorder-blocks
107 .endif
108
109 # Use the per-source COPTS variables to add -g to just those
110 # files that match the shell patterns given in ${DEBUGLIST}
111 #
112 .for i in ${DEBUGLIST}
113 . for j in ${CFILES:T:M$i.c}
114 COPTS.${j}+=-g
115 . endfor
116 .endfor
117
118 # Always compile subr_debug_info.c with debug informations.
119 # This allows gdb to use type informations.
120 #
121 COPTS.debugsyms.c+= -g
122
123 # compile rules: rules are named ${TYPE}_${SUFFIX} where TYPE is NORMAL or
124 # NOPROF and SUFFIX is the file suffix, capitalized (e.g. C for a .c file).
125 NORMAL_C?= @${_MKSHMSG} "compile ${.CURDIR:T}/${.TARGET}"; \
126 ${_MKSHECHO}\
127 ${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} -c $<; \
128 ${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} -c $<
129 NOPROF_C?= @${_MKSHMSG} "compile ${.CURDIR:T}/${.TARGET}"; \
130 ${_MKSHECHO}\
131 ${CC} ${CFLAGS} ${CPPFLAGS} -c $<; \
132 ${CC} ${CFLAGS} ${CPPFLAGS} -c $<
133 NORMAL_S?= @${_MKSHMSG} "compile ${.CURDIR:T}/${.TARGET}"; \
134 ${_MKSHECHO}\
135 ${CC} ${AFLAGS} ${CPPFLAGS} -c $<; \
136 ${CC} ${AFLAGS} ${CPPFLAGS} -c $<
137
138 ##
139 ## (3) libkern and compat
140 ##
141 ## Set KERN_AS in the port Makefile to "obj" or "library". The
142 ## default is "library", as documented in $S/lib/libkern/Makefile.inc.
143 ##
144
145 ### find out what to use for libkern
146 .include "$S/lib/libkern/Makefile.inc"
147 .ifndef PROF
148 LIBKERN?= ${KERNLIB}
149 .else
150 LIBKERN?= ${KERNLIB_PROF}
151 .endif
152
153 LIBKERNLN?= ${KERNLIBLN}
154
155 ### find out what to use for libcompat
156 .include "$S/compat/common/Makefile.inc"
157 .ifndef PROF
158 SYSLIBCOMPAT?= ${COMPATLIB}
159 .else
160 SYSLIBCOMPAT?= ${COMPATLIB_PROF}
161 .endif
162
163 SYSLIBCOMPATLN?= ${COMPATLIBLN}
164
165 ##
166 ## (4) local objects, compile rules, and dependencies
167 ##
168 ## Each port should have a corresponding section with settings for
169 ## MD_CFILES, MD_SFILES, and MD_OBJS, along with build rules for same.
170 ##
171 MI_CFILES=devsw.c ioconf.c param.c
172 # the need for a MI_SFILES variable is dubitable at best
173 MI_OBJS=${MI_CFILES:S/.c/.o/}
174
175 param.c: $S/conf/param.c
176 ${_MKTARGET_CREATE}
177 rm -f param.c
178 cp $S/conf/param.c .
179
180 param.o: Makefile
181
182 .for _cfile in ${MI_CFILES}
183 ${_cfile:T:R}.o: ${_cfile}
184 ${NORMAL_C}
185 .endfor
186
187 ##
188 ## (5) link settings
189 ##
190 ## TEXTADDR (or LOADADDRESS), LINKFORMAT, and any EXTRA_LINKFLAGS must
191 ## be set in the port's Makefile. The port specific definitions for
192 ## LINKFLAGS_NORMAL and LINKFLAGS_DEBUG will added to the LINKFLAGS
193 ## depending on the value of DEBUG.
194 ##
195 # load lines for config "xxx" will be emitted as:
196 # xxx: ${SYSTEM_DEP} swapxxx.o
197 # ${SYSTEM_LD_HEAD}
198 # ${SYSTEM_LD} swapxxx.o
199 # ${SYSTEM_LD_TAIL}
200 SYSTEM_OBJ?= ${MD_OBJS} ${MI_OBJS} ${OBJS} ${SYSLIBCOMPAT} ${LIBKERN}
201 SYSTEM_DEP?= Makefile ${SYSTEM_OBJ:O} .gdbinit
202 SYSTEM_LD_HEAD?=@rm -f $@
203 SYSTEM_LD?= @${_MKSHMSG} " link ${.CURDIR:T}/${.TARGET}"; \
204 ${_MKSHECHO}\
205 ${LD} -Map $@.map --cref ${LINKFLAGS} -o $@ '$${SYSTEM_OBJ}' '$${EXTRA_OBJ}' vers.o; \
206 ${LD} -Map $@.map --cref ${LINKFLAGS} -o $@ ${SYSTEM_OBJ} ${EXTRA_OBJ} vers.o
207 SYSTEM_LD_TAIL?=@${TOOL_SED} '/const char sccs/!d;s/.*@(.)//;s/\\.*//' vers.c; \
208 ${SIZE} $@; chmod 755 $@
209
210 TEXTADDR?= ${LOADADDRESS} # backwards compatibility
211 LINKTEXT?= ${TEXTADDR:C/.+/-Ttext &/}
212 LINKDATA?= ${DATAADDR:C/.+/-Tdata &/}
213 ENTRYPOINT?= start
214 LINKENTRY?= ${ENTRYPOINT:C/.+/-e &/}
215 LINKFLAGS?= ${LINKFORMAT} ${LINKTEXT} ${LINKDATA} ${LINKENTRY} \
216 ${EXTRA_LINKFLAGS}
217
218 LINKFLAGS_DEBUG?= -X
219 SYSTEM_LD_TAIL_DEBUG?=; \
220 echo mv -f $@ $@.gdb; mv -f $@ $@.gdb; \
221 echo ${STRIP} ${STRIPFLAGS} -o $@ $@.gdb; \
222 ${STRIP} ${STRIPFLAGS} -o $@ $@.gdb
223 LINKFLAGS_NORMAL?= -S
224 STRIPFLAGS?= -g
225
226 DEBUG?=
227 .if !empty(DEBUG:M-g*)
228 SYSTEM_LD_TAIL+=${SYSTEM_LD_TAIL_DEBUG}
229 LINKFLAGS+= ${LINKFLAGS_DEBUG}
230 EXTRA_KERNELS+= ${KERNELS:@.KERNEL.@${.KERNEL.}.gdb@}
231 .elifndef PROF
232 LINKFLAGS+= ${LINKFLAGS_NORMAL}
233 .endif
234
235 SYSTEM_LD_TAIL+=; \
236 if grep '^\#define.*SYMTAB_SPACE' opt_ddbparam.h > /dev/null; then \
237 echo "${DBSYM} $@"; \
238 ${DBSYM} $@; \
239 fi
240
241 SYSTEM_LD_HEAD+=${SYSTEM_LD_HEAD_EXTRA}
242 SYSTEM_LD_TAIL+=${SYSTEM_LD_TAIL_EXTRA}
243
244 ##
245 ## (6) port independent targets and dependencies: assym.h, vers.o
246 ##
247 .if !target(assym.h)
248 assym.h: ${GENASSYM_CONF} ${GENASSYM_EXTRAS}
249 ${_MKTARGET_CREATE}
250 cat ${GENASSYM_CONF} ${GENASSYM_EXTRAS} | \
251 ${GENASSYM} -- ${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} \
252 > assym.h.tmp && \
253 mv -f assym.h.tmp assym.h
254 ${MD_SFILES:C/\.[Ss]/.o/} ${SFILES:C/\.[Ss]/.o/}: assym.h
255 .endif
256
257 .if !target(vers.o)
258 newvers: vers.o
259 vers.o: ${SYSTEM_DEP} ${SYSTEM_SWAP_DEP} $S/conf/newvers.sh $S/conf/osrelease.sh
260 ${_MKMSG_CREATE} vers.c
261 ${HOST_SH} $S/conf/newvers.sh
262 ${_MKTARGET_COMPILE}
263 ${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} -c vers.c
264 .endif
265
266 .if !target(config_time.h)
267 BUILDSYMLINKS+= config_time.src config_time.h
268 .endif
269
270 .if defined(MEMORY_DISK_IMAGE)
271 md_root_image.h: ${MEMORY_DISK_IMAGE}
272 ${_MKTARGET_CREATE}
273 ${TOOL_HEXDUMP} -v -e '"\t" 8/1 "0x%02x, " "\n"' ${.ALLSRC} > ${.TARGET}
274
275 # XXX This is only needed when building md_root.o
276 CPPFLAGS+= -DMEMORY_DISK_IMAGE
277 md_root.o: md_root_image.h
278 .endif
279
280 # depend on MEMORY_DISK_IMAGE configuration
281 md_root.o: Makefile
282
283 # depend on root or device configuration
284 autoconf.o conf.o: Makefile
285
286 # depend on network or filesystem configuration
287 uipc_proto.o vfs_conf.o: Makefile
288
289 # depend on maxusers and CPU configuration
290 assym.h machdep.o: Makefile
291
292 ##
293 ## (7) misc targets: install, clean(dir), depend(all), lint, links, tags,
294 ## cscope, mkid
295 ##
296 ## Any ports that have other stuff to be cleaned up should fill in
297 ## EXTRA_CLEAN. Some ports may want different settings for
298 ## KERNLINTFLAGS, MKDEP_CFLAGS, or MKDEP_AFLAGS.
299 ##
300 .if !target(__CLEANKERNEL)
301 __CLEANKERNEL: .USE
302 ${_MKMSG} "${.TARGET}ing the kernel objects"
303 rm -f ${KERNELS} eddep tags *.[io] *.ln [a-z]*.s vers.c \
304 [Ee]rrs linterrs makelinks assym.h.tmp assym.h \
305 ${EXTRA_KERNELS} ${EXTRA_CLEAN}
306 .endif
307
308 .if !target(kernelnames)
309 kernelnames:
310 @echo "${KERNELS} ${EXTRA_KERNELS}"
311 .endif
312
313 .if !target(__CLEANDEPEND)
314 __CLEANDEPEND: .USE
315 echo .depend ${DEPS} | xargs rm -f --
316 .endif
317
318 # do not !target these, the kern and compat Makefiles augment them
319 cleandir distclean: __CLEANKERNEL __CLEANDEPEND
320 clean: __CLEANKERNEL
321 depend: .depend
322 dependall: depend .WAIT all
323
324 .if !target(.depend)
325 MKDEP_AFLAGS?= ${AFLAGS}
326 MKDEP_CFLAGS?= ${CFLAGS}
327 SSRCS=${MD_SFILES} ${SFILES}
328 CSRCS=${MD_CFILES} ${MI_CFILES} ${CFILES}
329 SRCS=${SSRCS} ${CSRCS}
330 DEPS= ${SRCS:T:O:u:R:S/$/.d/g}
331
332 .for _s in ${SSRCS}
333 ${_s:T:R}.d: ${_s} assym.h
334 ${_MKTARGET_CREATE}
335 ${MKDEP} -f ${.TARGET} -- ${MKDEP_AFLAGS} \
336 ${CPPFLAGS} ${CPPFLAGS.${_s:T}} ${_s}
337 .endfor
338 .for _s in ${CSRCS}
339 ${_s:T:R}.d: ${_s}
340 ${_MKTARGET_CREATE}
341 ${MKDEP} -f ${.TARGET} -- ${MKDEP_CFLAGS} \
342 ${CPPFLAGS} ${CPPFLAGS.${_s:T}} ${_s}
343 .endfor
344
345 assym.d: assym.h
346 ${_MKTARGET_CREATE}
347 cat ${GENASSYM_CONF} ${GENASSYM_EXTRAS} | \
348 ${GENASSYM} -- ${MKDEP} -f assym.dep -- \
349 ${CFLAGS} ${CPPFLAGS}
350 ${TOOL_SED} -e 's/.*\.o:.*\.c/assym.h:/' < assym.dep >${.TARGET}
351 rm -f assym.dep
352
353 DEPS+= assym.d
354
355 .depend: ${DEPS}
356 ${_MKTARGET_CREATE}
357 echo "${.ALLSRC}" | ${MKDEP} -D
358 .endif
359
360 .if !target(lint)
361 ALLSFILES?= ${MD_SFILES} ${SFILES}
362 LINTSTUBS?= ${ALLSFILES:T:R:C/^.*$/LintStub_&.c/g}
363 KERNLINTFLAGS?= -bcehnxzFS
364 NORMAL_LN?= ${LINT} ${KERNLINTFLAGS} ${CPPFLAGS:M-[IDU]*} -i $<
365
366 _lsrc=${CFILES} ${LINTSTUBS} ${MI_CFILES} ${MD_CFILES}
367 LOBJS?= ${_lsrc:T:S/.c$/.ln/g} ${LIBKERNLN} ${SYSLIBCOMPATLN}
368
369 .for _sfile in ${ALLSFILES}
370 LintStub_${_sfile:T:R}.c: ${_sfile} assym.h
371 ${_MKTARGET_COMPILE}
372 ${CC} -E -C ${AFLAGS} ${CPPFLAGS} ${_sfile} | \
373 ${TOOL_AWK} -f $S/kern/genlintstub.awk >${.TARGET}
374 .endfor
375
376 .for _cfile in ${CFILES} ${LINTSTUBS} ${MI_CFILES} ${MD_CFILES}
377 ${_cfile:T:R}.ln: ${_cfile}
378 ${_MKTARGET_COMPILE}
379 ${NORMAL_LN}
380 .endfor
381
382 lint: ${LOBJS}
383 ${LINT} ${KERNLINTFLAGS} ${CPPFLAGS:M-[IDU]*} ${LOBJS}
384 .endif
385
386 # Attempt to do a syntax-only compile of the entire kernel as one entity.
387 # Alas, bugs in the GCC C frontend prevent this from completely effective
388 # but information can be gleaned from the output.
389 syntax-only: ${CFILES} ${MD_CFILES}
390 ${CC} -fsyntax-only -combine ${CFLAGS} ${CPPFLAGS} \
391 ${CFILES} ${MD_CFILES}
392
393 # List of kernel images that will be installed into the root file system.
394 # Some platforms may need to install more than one (e.g. a netbsd.aout file
395 # to be loaded directly by the firmware), so this can be overriden by them.
396 KERNIMAGES?= netbsd
397
398 .if !target(install)
399 # The install target can be redefined by putting a
400 # install-kernel-${MACHINE_NAME} target into /etc/mk.conf
401 MACHINE_NAME!= uname -n
402 install: install-kernel-${MACHINE_NAME}
403 .if !target(install-kernel-${MACHINE_NAME})
404 install-kernel-${MACHINE_NAME}:
405 .for _K in ${KERNIMAGES}
406 rm -f ${DESTDIR}/o${_K}
407 ln ${DESTDIR}/${_K} ${DESTDIR}/o${_K}
408 cp ${_K} ${DESTDIR}/n${_K}
409 mv ${DESTDIR}/n${_K} ${DESTDIR}/${_K}
410 .endfor
411 .endif
412 .endif
413
414 .if !target(tags)
415 tags:
416 @echo "see $S/kern/Makefile for tags"
417 .endif
418
419 EXTRA_CLEAN+= cscope.out cscope.tmp
420 .if !target(cscope.out)
421 cscope.out: Makefile depend
422 ${_MKTARGET_CREATE}
423 @${TOOL_SED} 's/[^:]*://;s/^ *//;s/ *\\ *$$//;' lib/kern/.depend \
424 | tr -s ' ' '\n' \
425 | ${TOOL_SED} 's|^\([^.\\]\)|lib/kern/\1|;s|^../../||;' \
426 > cscope.tmp
427 @${TOOL_SED} 's/[^:]*://;s/^ *//;s/ *\\ *$$//;' lib/compat/.depend \
428 | tr -s ' ' '\n' \
429 | ${TOOL_SED} 's|^\([^.\\]\)|lib/compat/\1|;s|^../../||;' \
430 >> cscope.tmp
431 @echo ${SRCS} | cat - cscope.tmp | tr -s ' ' '\n' | sort -u | \
432 ${CSCOPE} -k -i - -b `echo ${INCLUDES} | ${TOOL_SED} s/-nostdinc//`
433 # cscope doesn't write cscope.out if it's uptodate, so ensure
434 # make doesn't keep calling cscope when not needed.
435 @rm -f cscope.tmp; touch cscope.out
436 .endif
437
438 .if !target(cscope)
439 cscope: cscope.out
440 @${CSCOPE} -d
441 .endif
442
443 EXTRA_CLEAN+= ID
444 .if !target(mkid)
445 .PHONY: mkid
446 mkid: ID
447
448 ID: Makefile depend
449 ${_MKTARGET_CREATE}
450 @${MKID} \
451 `${TOOL_SED} 's/[^:]*://;s/^ *//;s/ *\\\\ *$$//;' \
452 lib/kern/.depend lib/compat/.depend \
453 | tr ' ' '\n' \
454 | ${TOOL_SED} "s|^../../||" \
455 | sort -u` \
456 `${TOOL_SED} 's/[^:]*://;s/^ *//;s/ *\\\\ *$$//;' \
457 .depend \
458 | tr ' ' '\n' \
459 | sort -u`
460
461 .endif
462
463 .include "${S}/gdbscripts/Makefile.inc"
464
465 EXTRA_CLEAN+= .gdbinit
466 .gdbinit: Makefile ${S}/gdbscripts/Makefile.inc
467 ${_MKTARGET_CREATE}
468 rm -f .gdbinit
469 .for __gdbinit in ${SYS_GDBINIT}
470 echo "source ${S}/gdbscripts/${__gdbinit}" >> .gdbinit
471 .endfor
472 .if defined(GDBINIT) && !empty(GDBINIT)
473 .for __gdbinit in ${GDBINIT}
474 echo "source ${__gdbinit}" >> .gdbinit
475 .endfor
476 .endif
477
478 # The following files use alloca(3) or variable array allocations.
479 # Their full name is noted as documentation.
480 VARSTACK=dev/cgd.c kern/uipc_socket.c miscfs/genfs/genfs_vnops.c \
481 nfs/nfs_bio.c uvm/uvm_bio.c \
482 uvm/uvm_pager.c dev/ic/aic7xxx.c dev/ic/aic79xx.c arch/xen/i386/gdt.c \
483 dev/ofw/ofw_subr.c
484
485 . if (defined(HAVE_GCC) && ${HAVE_GCC} > 3) || defined(HAVE_PCC)
486 .for __varstack in ${VARSTACK}
487 COPTS.${__varstack:T} += -Wno-stack-protector
488 .endfor
489 .endif
490
491 AFLAGS+= ${AOPTS.${.IMPSRC:T}}
492 CFLAGS+= ${COPTS.${.IMPSRC:T}} ${CPUFLAGS.${.IMPSRC:T}}
493 CPPFLAGS+= ${CPPFLAGS.${.IMPSRC:T}}
494 CWARNFLAGS+= ${CWARNFLAGS.${.IMPSRC:T}}
495
496 .include <bsd.files.mk>
497
498 ##
499 ## the end
500 ##
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