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UPDATING revision 1.372
      1 $NetBSD: UPDATING,v 1.372 2024/11/22 16:07:32 riastradh Exp $
      2 
      3 This file (UPDATING) is intended to be a brief reference to recent
      4 changes that might cause problems in the build process, and a guide for
      5 what to do if something doesn't work.
      6 
      7 For a more detailed description of the recommended way to build NetBSD
      8 using build.sh, see the BUILDING file.
      9 
     10 Note that much of the advice in this UPDATING file was written before
     11 build.sh existed.  Nevertheless, the advice here may be useful for
     12 working around specific problems with build.sh.
     13 
     14 Sections are marked with "^^^^^".  After the section on "Recent changes"
     15 are several sections containing more general information.
     16 
     17 See also: BUILDING, build.sh, Makefile.
     18 
     19 Recent changes:
     20 ^^^^^^^^^^^^^^^
     21 
     22 20241122:
     23 	Changes to various build options require cleaning their objdir
     24 	in update builds:
     25 
     26 	cd external/bsd/file/lib && $TOOLDIR/bin/nbmake-$ARCH clean
     27 	cd external/bsd/libarchive/lib && $TOOLDIR/bin/nbmake-$ARCH clean
     28 	cd external/public-domain/xz/lib && $TOOLDIR/bin/nbmake-$ARCH clean
     29 
     30 	Changes to bsd.lib.mk to improve detecting differences in
     31 	shared library symbol exports may cause some .actsym files in
     32 	the objdir to become stale in update builds.
     33 
     34 	To work around this, delete all files matching `*.actsym' in
     35 	the objdir.  For example:
     36 
     37 	find OBJDIR -name '*.actsym' -type f -print0 | xargs -0 rm
     38 
     39 20241104:
     40 	Changes around the integration of the zstd compression
     41 	library may require manual deletion of some object directories
     42 	if you update from a build from a few days ago:
     43 	rm -rf DESTDIR/usr/lib/*/libarchive*
     44 	rm -rf DESTDIR/usr/lib/*/libmagic*
     45 	rm -rf DESTDIR/usr/lib/*/libzstd*
     46 	rm -rf DESTDIR/usr/lib/libarchive*
     47 	rm -rf DESTDIR/usr/lib/libmagic*
     48 	rm -rf DESTDIR/usr/lib/libzstd*
     49 	rm -rf OBJDIR/compat/*/*/external/bsd/file/
     50 	rm -rf OBJDIR/compat/*/*/external/bsd/libarchive/
     51 	rm -rf OBJDIR/compat/*/*/external/bsd/zstd/
     52 	rm -rf OBJDIR/external/bsd/file/
     53 	rm -rf OBJDIR/external/bsd/libarchive/
     54 	rm -rf OBJDIR/external/bsd/zstd/
     55 	rm -rf OBJDIR/external/gpl3/gcc/
     56 	rm -rf OBJDIR/tools/gcc/
     57 
     58 20240926:
     59 	Building -current when running on amd64 from about 20240924
     60 	to about 20240926 will not work due to a "malloc_np.h"
     61 	error. Please downgrade to a version from 20240924 or older,
     62 	or upgrade to a newer version e.g. using a binary release from
     63 	the NetBSD build servers.
     64 
     65 20240923:
     66 	Update builds will require cleaning the object directories for
     67 	jemalloc (like: "rm -rf $OBJ/external/bsd/jemalloc*") and the
     68 	libc dependency files (like: "rm $OBJ/lib/libc/jemalloc.*").
     69 	On architectures with COMPAT libs, those also have to be cleaned,
     70 	e.g. on sparc64: "rm -rf $OBJ/compat/sparc64/sparc/external/bsd/jemalloc*"
     71 	and "rm $OBJ/compat/sparc64/sparc/lib/libc/jemalloc.*".
     72 
     73 20240817:
     74 	Update builds will require cleaning in src/external/historical/nawk/bin
     75 	in order to remove the awk binary since now there is a subdirectory
     76 	called awk.
     77 
     78 20240812:
     79 	Update builds will require removing the tools objdir for gdb
     80 	if building with MKCROSSGDB=yes. All architectures use gdb.old
     81 	now.
     82 
     83 20240630:
     84 	Update builds will require removing the tools objdir for binutils
     85 	(as most architectures should use binutils.old now).
     86 
     87 20240610:
     88 	Update builds are likely to require removing the objdir for
     89 	distrib/<arch>/cdroms - or at least references to libarchive
     90 	from within there after the recent libarchive update.
     91 
     92 20240504:
     93 	Update builds on x86 require making the `cleandir' target in
     94 	lib/libm, or deleting the objdir for lib/libm.
     95 
     96 20240423:
     97 	Update builds with x11 may fail after switching to Mesa 21.
     98 
     99 20240410:
    100 	Update builds may require manually deleting
    101 	$DESTDIR/var/run/named (and, potentially,
    102 	$DESTDIR/var/run/lwresd) in order to avoid checkflist failure.
    103 
    104 20240409:
    105 	32-bit compatibility libraries were moved into the base32
    106 	and debug32 sets.  HTML man pages were moved into the manhtml set.
    107 
    108 20230828:
    109 	If:
    110         - you updated to current and ran postinstall between 20230826
    111 	  and 20230828 inclusive, and
    112         - you are not using anything outside the base system to
    113 	  populate /etc/openssl/certs (e.g., manually adding
    114 	  certificates or using ca-certificates or mozilla-rootcerts or
    115 	  mozilla-rootcerts-openssl from pkgsrc),
    116 	delete /etc/openssl/certs and rerun postinstall or just
    117 	`certctl rehash'.
    118 
    119 	Otherwise, certctl(8) will think someone else has left
    120 	/etc/openssl/certs in the way and will avoid clobbering it on
    121 	upgrade from older NetBSD.
    122 
    123 20230718:
    124 	build.sh will use mk.conf in the same directory as build.sh instead
    125 	of /etc/mk.conf, unless MAKECONF is already defined in the environment.
    126 
    127 20230714:
    128 	Import of gcc 10.5 requires a clean build of at least tools/gcc
    129 	and external/gpl3/gcc* object directories. An update build
    130 	without cleaning will result in obscure failures in rare corner
    131 	cases.
    132 
    133 20230604:
    134 	Building native kernels with the installed make(1) instead of
    135 	the $TOOLDIR/bin/nbmake-${arch} wrapper will fail if userland
    136 	has not been updated. Note that this is an unsupported build
    137 	configuration (but usually works if userland is -current enough).
    138 
    139 20230523:
    140 	ctfmerge was fixed as macOS host tool. This may require a clean tools
    141 	rebuild to detect the update to tools/compat/configure.
    142 
    143 20230515:
    144 	New openssl build requires removal of the crypto/external/bsd/openssl
    145 	and tests/crypto/libcrypto subdirectories in the ${OBJDIR} hierarchy.
    146 	Otherwise test results may be wrong due to wrong "golden" output
    147 	files being installed.
    148 
    149 20230322:
    150 	Fixes for moved /lib/libisns* mean that builds will complain about
    151 	./usr/lib/libisns* being missing until src/lib/libisns is forced
    152 	to (re)install the files, including the symlinks.  The simplest
    153 	way is to clean this subdir before building.
    154 
    155 20230112:
    156 	New binutils require an updated ld.elf_so. If you are doing
    157 	(unsupported) in-place self builds (with the -E flag to build.sh),
    158 	make sure to have installed latest ld.elf_so before you rebuild
    159 	userland.
    160 
    161 20221116:
    162 	The addition to NetBSD's version of UFS2 of support for extended
    163 	attributes broke backward compatibility with previous releases
    164 	of NetBSD, so UFS2 has been restored to being compatible with
    165 	previous NetBSD releases by disabling extended attributes.
    166 	(Note that ACLs are implemented as extended attributes, so
    167 	this changes disables ACLs as well.)
    168 
    169 	Support for UFS2 with extended attributes is now available in a new
    170 	UFS variant called UFS2ea.  If you have created extended attributes
    171 	in an original UFS2 file system then "fsck -p" will now fail due to
    172 	the unexpected presence of extended attributes and "fsck -y" will
    173 	remove all extended attributes.  If you wish to preserve extended
    174 	attributes rather than delete them, there is a utility to convert
    175 	a UFS2 file system to UFS2ea and leave extended attributes in place,
    176 	but this should be used with caution since it will preserve any
    177 	extended attributes that have been corrupted by the backward
    178 	incompatibility too.
    179 
    180 	If you wish to use a UFS2ea file system as your root file system,
    181 	then you will need to update your boot loader to a version that
    182 	supports UFS2ea.
    183 
    184 	For more information, see:
    185 	https://wiki.netbsd.org/features/UFS2ea
    186 
    187 20221111:
    188 	The new libdrm import worsened the conflict issues for the
    189 	kdump/ktruss ioctl, and i915 now conflicts with base, and has
    190 	been turned off.  This will cause update build issues like:
    191 
    192 		kdump-ioctl.c:12175:143: error: 'DRM_IOCTL_I915_DESTROY_HEAP'
    193 		   undeclared here (not in a function);
    194 		   did you mean 'DRM_IOCTL_MODE_DESTROY_DUMB'?
    195 
    196 	You'll need to clean usr.bin/ktruss, usr.bin/kdump, and rescue.
    197 
    198 20220921:
    199 	Since the kernel version was bumped to 9.99.100, the bootloader
    200 	must be updated on x86 or EFI boot platforms in order to load
    201 	modules from boot.cfg(5) or interactively at the bootloader
    202 	prompt.
    203 
    204 	The kernel can still load modules at runtime, with modload(8)
    205 	or modules.conf(5), with no bootloader update.  This will not
    206 	affect release branches because it only applies to patch
    207 	numbers >=100.
    208 
    209 	On x86 (i386 or amd64) with BIOS boot, this requires copying a
    210 	new /usr/mdec/boot to /boot.  You can build this in the destdir
    211 	by running `$TOOLDIR/bin/nbmake-$ARCH dependall install' in
    212 	sys/arch/i386/stand.
    213 
    214 	On platforms with EFI boot (including x86 with EFI boot), this
    215 	requires copying a new /usr/mdec/boot*.efi to the EFI/BOOT/
    216 	directory on the EFI system partition.  The boot*.efi file is:
    217 
    218 	aarch64	bootaa64.efi
    219 	amd64	bootx64.efi
    220 	arm	bootarm.efi	(32-bit arm)
    221 	i386	bootx32.efi
    222 
    223 	You can build this in the destdir by running
    224 	`$TOOLDIR/bin/nbmake-$ARCH dependall install' in
    225 	sys/stand/efiboot/boot*.
    226 
    227 20220821:
    228 	Support for building extsrc/ has been deprecated.
    229 	EXTSRCSRCDIR and MKEXTSRC have been deprecated.
    230 
    231 20220714:
    232 	Updates to xorg-server and associated drivers may cause builds to
    233 	fail.  Cleaning both DESTDIR and the xorg build tree may be needed.
    234 
    235 20220628:
    236 	Changes in the build of src/games/robots require a clean build
    237 	of that program.
    238 
    239 20211116:
    240 	Changes in the xorg build require clean obj dirs for external/mit/xorg
    241 	(or a full clean/non-update build).
    242 
    243 20211112:
    244 	Device tree sources were updated for evbarm.  Some device nodes
    245 	(in particular, ld(4) devices on the ROCKPro64) will be renumbered.
    246 
    247 20211014:
    248 	MKPIE default for aarch64 has changed, a clean build is required.
    249 
    250 20210917:
    251 	Changed MNT_ACLS to default to POSIX1e ACLs instead of NFSv4
    252 	ACLs, to be compatible with FreeBSD. If you are using NFSv4 ACLs
    253 	and have "acls" in /etc/fstab you'll need to change it to "nfs4acls".
    254 
    255 20210711:
    256 	Updated GMP sources may require cleaning in tools/gmp and/or in
    257 	external/lgpl3/gmp/lib, particularly if GCC itself does not build.
    258 
    259 20210417:
    260 	GCC 10 was enabled for several platforms.  If builds fail in either
    261 	tools/gcc or external/gpl3/gcc, first try cleaning those objects and
    262 	removing the $DESTDIR/usr/include/g++ subdirectory.
    263 
    264 20201016:
    265 	MIPS kernel modules have been disabled until they work.  This will
    266 	turn up in extra files in the DESTDIR, which should be cleaned.
    267 
    268 20200925:
    269 	GNU MPC and MPFR have been updated.  At least MPFR needs cleaning
    270 	in both the tools and external dirs.
    271 
    272 20200912:
    273 	GCC 9 has arrived for Arm and x86 platforms, and will be coming
    274 	for several more, as will binutils 2.34.  Clean as required.
    275 
    276 20200907:
    277 	GCC 9 is coming, and binutils has been updated for MIPS.  This
    278 	probably requires cleaning the tools/binutils.
    279 
    280 20200811:
    281 	GCC updates may require cleaning the objdir.  This may occur
    282 	due to GCC 7.5 update, GCC 8.4 move to gcc.old, or the upcoming
    283 	GCC 9 upgrade.
    284 
    285 20200614:
    286 	blacklist* has been renamed to blocklist*. postinstall(8)
    287 	should handle the migration.
    288 
    289 20200601:
    290 	Due to a mistake in LIBISPRIVATE handling, .so libraries were
    291 	created in the build directories and need cleaning.
    292 
    293 20200311:
    294 	GCC 8 ports will need cleaning in src/tools/gcc and
    295 	src/external/gpl3/gcc due to GCC 8.4 update.
    296 
    297 20191118:
    298 	More architectures were switched to gcc8:
    299 	    i386, ia64 powerpc64, sparc, sparc64, arm
    300 	The same comments as in 20191022 apply.
    301 
    302 20191112:
    303 	The LLVM update requires a clean rebuild for all architectures using
    304 	LLVM during the tools build phase (i386, amd64, aarch64).
    305 
    306 20191022:
    307 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
    308 	In-place ("expert mode", build.sh -E) builds are not supported
    309 	when going from a GCC 7 userland to GCC 8. Do a regular
    310 	build to a different DESTDIR (or preferably: build.sh -U) at least
    311 	once and install sets, or download comp.{tar.xz,tgz} from the
    312 	daily builds and install that before doing the next in-place build.
    313 
    314 20191001:
    315 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
    316 	old builds with GCC 7 output now uses GCC 8.  Clean this
    317 	directory, and also clean src/external/gpl3/gcc.
    318 
    319 20190903:
    320 	Files with names that coincide with existing files' names on
    321 	case-insensitive file systems were inadvertently committed, for
    322 	radeon GPU firmware.  We cannot mark these as obsolete for
    323 	postinstall to fix, so if you updated src since 2019-08-26, and
    324 	ran build.sh distribution or ran build.sh release, you must
    325 	manually delete the following files in your DESTDIR (which is
    326 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
    327 	them:
    328 
    329 		/libdata/firmware/radeon/bonaire_ce.bin
    330 		/libdata/firmware/radeon/bonaire_mc.bin
    331 		/libdata/firmware/radeon/bonaire_me.bin
    332 		/libdata/firmware/radeon/bonaire_mec.bin
    333 		/libdata/firmware/radeon/bonaire_pfp.bin
    334 		/libdata/firmware/radeon/bonaire_rlc.bin
    335 		/libdata/firmware/radeon/bonaire_sdma.bin
    336 		/libdata/firmware/radeon/bonaire_smc.bin
    337 		/libdata/firmware/radeon/bonaire_uvd.bin
    338 		/libdata/firmware/radeon/hainan_ce.bin
    339 		/libdata/firmware/radeon/hainan_mc.bin
    340 		/libdata/firmware/radeon/hainan_me.bin
    341 		/libdata/firmware/radeon/hainan_pfp.bin
    342 		/libdata/firmware/radeon/hainan_rlc.bin
    343 		/libdata/firmware/radeon/hainan_smc.bin
    344 		/libdata/firmware/radeon/hawaii_ce.bin
    345 		/libdata/firmware/radeon/hawaii_mc.bin
    346 		/libdata/firmware/radeon/hawaii_me.bin
    347 		/libdata/firmware/radeon/hawaii_mec.bin
    348 		/libdata/firmware/radeon/hawaii_pfp.bin
    349 		/libdata/firmware/radeon/hawaii_rlc.bin
    350 		/libdata/firmware/radeon/hawaii_sdma.bin
    351 		/libdata/firmware/radeon/hawaii_smc.bin
    352 		/libdata/firmware/radeon/kabini_ce.bin
    353 		/libdata/firmware/radeon/kabini_me.bin
    354 		/libdata/firmware/radeon/kabini_mec.bin
    355 		/libdata/firmware/radeon/kabini_pfp.bin
    356 		/libdata/firmware/radeon/kabini_rlc.bin
    357 		/libdata/firmware/radeon/kabini_sdma.bin
    358 		/libdata/firmware/radeon/kaveri_ce.bin
    359 		/libdata/firmware/radeon/kaveri_me.bin
    360 		/libdata/firmware/radeon/kaveri_mec.bin
    361 		/libdata/firmware/radeon/kaveri_mec2.bin
    362 		/libdata/firmware/radeon/kaveri_pfp.bin
    363 		/libdata/firmware/radeon/kaveri_rlc.bin
    364 		/libdata/firmware/radeon/kaveri_sdma.bin
    365 		/libdata/firmware/radeon/mullins_ce.bin
    366 		/libdata/firmware/radeon/mullins_me.bin
    367 		/libdata/firmware/radeon/mullins_mec.bin
    368 		/libdata/firmware/radeon/mullins_pfp.bin
    369 		/libdata/firmware/radeon/mullins_rlc.bin
    370 		/libdata/firmware/radeon/mullins_sdma.bin
    371 		/libdata/firmware/radeon/oland_ce.bin
    372 		/libdata/firmware/radeon/oland_mc.bin
    373 		/libdata/firmware/radeon/oland_me.bin
    374 		/libdata/firmware/radeon/oland_pfp.bin
    375 		/libdata/firmware/radeon/oland_rlc.bin
    376 		/libdata/firmware/radeon/oland_smc.bin
    377 		/libdata/firmware/radeon/pitcairn_ce.bin
    378 		/libdata/firmware/radeon/pitcairn_mc.bin
    379 		/libdata/firmware/radeon/pitcairn_me.bin
    380 		/libdata/firmware/radeon/pitcairn_pfp.bin
    381 		/libdata/firmware/radeon/pitcairn_rlc.bin
    382 		/libdata/firmware/radeon/pitcairn_smc.bin
    383 		/libdata/firmware/radeon/tahiti_ce.bin
    384 		/libdata/firmware/radeon/tahiti_mc.bin
    385 		/libdata/firmware/radeon/tahiti_me.bin
    386 		/libdata/firmware/radeon/tahiti_pfp.bin
    387 		/libdata/firmware/radeon/tahiti_rlc.bin
    388 		/libdata/firmware/radeon/tahiti_smc.bin
    389 		/libdata/firmware/radeon/verde_ce.bin
    390 		/libdata/firmware/radeon/verde_mc.bin
    391 		/libdata/firmware/radeon/verde_me.bin
    392 		/libdata/firmware/radeon/verde_pfp.bin
    393 		/libdata/firmware/radeon/verde_rlc.bin
    394 		/libdata/firmware/radeon/verde_smc.bin
    395 
    396 	We will re-import these radeon firmware images another way
    397 	later.
    398 
    399 20190727:
    400 	The uefi bootloader has gained tftp support and needs a clean
    401 	build. If you do update builds, manually clean its object
    402 	directory by something like:
    403 	cd sys/arch/i386/stand/efiboot && make clean
    404 
    405 20190723:
    406 	The jemalloc allocator in libc is now built without extended
    407 	debugging (for performance reasons). In update builds make sure
    408 	to rebuild it completely, by removing all affected object files,
    409 	including compat builds, something like:
    410 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    411 
    412 20190207:
    413 	GCC 7 switched for many ports.  Update builds are likely to fail.
    414 
    415 Hints for a more successful build:
    416 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    417     Use build.sh, but do not use its "expert mode":
    418 	This will automatically build the tools in the
    419 	   correct order, and it will keep the tools and the
    420 	   new build products from interfering with the running
    421 	   system.  This will allow you to ignore most of the
    422 	   other advice in this file.
    423     Build a new kernel first:
    424 	This makes sure that any new system calls or features
    425 	   expected by the new userland will be present.  This
    426 	   helps to avoid critical errors when upgrading.
    427     Use object directories:
    428 	This helps to keep stale object
    429 	   files from polluting the build if a Makefile "forgets"
    430 	   about one.  It also makes it easier to clean up after
    431 	   a build.  It's also necessary if you want to use the
    432 	   same source tree for multiple machines.
    433 	   To use object directories with build.sh:
    434 	    a) invoke build.sh with the "-M" or "-O" options.
    435 	   To use object directories without using build.sh:
    436 	    a) cd /usr/src ; make cleandir
    437 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    438 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    439 	    d) cd /usr/src ; make build
    440 	   Note that running "make obj" in a directory will create
    441 	   in obj.$MACHINE directory.
    442     Build to a DESTDIR:
    443 	This helps to keep old installed files (especially libraries)
    444 	   from interfering with the new build.
    445 	   To build to a DESTDIR with build.sh, use the "-D" option.
    446 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    447 	   environment variable before running make build.  It should be
    448 	   set to the pathname of an initially empty directory.
    449 	   Problems: if you do not use build.sh, you might need to
    450 		update critical utilities without using DESTDIR since
    451 		nothing is executed from what is installed in DESTDIR.
    452 		(See critical utils, below.)
    453     Build often:
    454 	This keeps critical utilities current enough to not choke
    455 	on any other part of the source tree that depends on up to
    456 	date functionality.  If you use build.sh, you should not have
    457 	this problem.
    458 
    459 What to do if things don't work:
    460 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    461 When things don't work there are usually a few things that commonly
    462 should be done.
    463     1)	make includes
    464 	This should be done automatically by make build.
    465     2)  cd share/mk && make install
    466 	Again, automatically done by make build.
    467 
    468 Failsafe rebuild of a small part of the tree:
    469 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    470 To make sure you rebuild something correctly you want to do
    471 something like the following:
    472     1)  Make sure the includes and .mk files are up to date.
    473     2)  Make sure any program used to build the particular
    474 	utility is up to date.  (yacc, lex, etc...)
    475     3)  cd ...path/to/util...
    476 	make cleandir
    477 	rm ...all obj directories...
    478 	make cleandir			# yes, again
    479 	make obj
    480 	make depend && make
    481 
    482 Failsafe rebuild of the entire tree:
    483 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    484 If you really want to make sure the source tree is clean and
    485 ready for a build try the following.  Note that sourcing /etc/mk.conf
    486 (a make(1) Makefile) in this manner is not right, and will not work
    487 for anyone who uses any make(1) features in /etc/mk.conf.
    488 
    489 ---cut here---
    490 #!/bin/sh
    491 . /etc/mk.conf
    492 
    493 if [ -z $NETBSDSRCDIR ] ; then
    494     NETBSDSRCDIR=/usr/src
    495 fi
    496 if [ \! -d $NETBSDSRCDIR ] ; then
    497     echo Unable to find sources
    498     exit 1
    499 fi
    500 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    501 
    502 if [ -z $BSDOBJDIR ] ; then
    503     BSDOBJDIR=/usr/obj
    504 fi
    505 if [ -d $BSDOBJDIR ] ; then
    506     rm -rf $BSDOBJDIR
    507 fi
    508 
    509 cd $NETBSDSRCDIR && make cleandir
    510 
    511 ---cut here---
    512 
    513 Critical utilities:
    514 ^^^^^^^^^^^^^^^^^^^
    515 	usr.bin/make
    516 	usr.bin/yacc
    517 	usr.bin/lex
    518 	usr.bin/xlint
    519 	usr.bin/config
    520 
    521 Other problems and possible solutions:
    522 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    523 Symptom:Complaints involving a Makefile.
    524 Fix:	Rebuild usr.bin/make:
    525 	cd usr.bin/make && make && make install
    526 	Or, a failsafe method if that doesn't work:
    527 	cd usr.bin/make && cc -DMAKE_NATIVE *.c -I. -o make \
    528 	&& install make /usr/bin
    529 
    530 Fix:	Make sure .mk files are up to date.
    531 	cd share/mk && make install
    532 
    533 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    534 Fix:	Rebuild usr.bin/config
    535 
    536 Symptom:Obsolete intermediate files are used during compilation
    537 Fix:	Try the following sequence of commands in the directory in question.
    538 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    539 	(If you built the tree without "make obj" in the past, obsolete files
    540 	may remain.  The command tries to clean everything up)
    541 
    542 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
    543 	pointer type
    544 Fix:	Rebuild and install usr.bin/menuc
    545 
    546 Symptom:mklocale not found during build in share/locale/ctype
    547 Fix:	Build and install usr.bin/mklocale
    548 
    549 Symptom:undefined reference to `__assert13' or `__unsetenv13'
    550 Fix:    Rebuild and install lib/libc
    551 
    552 Symptom:usr.bin/config fails to build.
    553 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
    554 
    555 Symptom:undefined reference to `getprogname' or `setprogname'
    556 Fix:    Rebuild and install lib/libc
    557 
    558 Symptom:Update build fails in src/tools/gcc complaining that a variable
    559 	(e.g. CPPFLAGS) has changed since the previous run.
    560 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
    561 
    562 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
    563 	No such file or directory.
    564 Cause:	If a directory is created by mistake, then it is sometimes
    565 	deleted from the CVS repository using administrative commands
    566 	that bypass the normal cvs access controls.  If your cvs working tree
    567 	contains references to a directory that has been deleted on the
    568 	server in this way, then "cvs update" reports this error.
    569 Fix:	Recursively delete the affected directory from your working tree
    570 	and try the update again.
    571