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      1 $NetBSD: UPDATING,v 1.383 2025/07/21 17:07:26 martin 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 20250721:
     23 	GCC 12.5 was imported and there may be weird build issues.
     24 	Clean any GCC build dirs if you encounter weird things.
     25 
     26 20250720:
     27 	New openssl and old objects for tests for libcrypto may
     28 	cause spurious test failure, clean the src/tests/crypto/libcrypto
     29 	object dirs.
     30 
     31 20250528:
     32 	Changes in the tools build require removing all config.cache
     33 	files in the object tools directories.
     34 
     35 20250427:
     36 	The KERNEL_DIR option to build.sh is now functional.  Set it
     37 	with ``-V KERNEL_DIR=yes'' on your build.sh command.
     38 	With this, you can now colocate kernel and associated modules
     39 	in /netbsd/{kernel,kernel.dbg,modules} instead of having the
     40 	kernel in / but modules in /stand.
     41 
     42 	Note that you'll need new bootstrap code to use this feature.
     43 
     44 	This completes work begun many years ago by christos@ :-)
     45 
     46 20250413:
     47 	A change to bsd.lib.mk requires a clean build of all libraries.
     48 
     49 20250131:
     50 	The switch to the new jemalloc requires cleaning in libc.
     51 
     52 20241122:
     53 	Changes to various libraries' build options require cleaning
     54 	their objdirs in update builds:
     55 
     56 	cd external/bsd/file/lib && $TOOLDIR/bin/nbmake-$ARCH clean
     57 	cd external/bsd/libarchive/lib && $TOOLDIR/bin/nbmake-$ARCH clean
     58 	cd external/public-domain/xz/lib && $TOOLDIR/bin/nbmake-$ARCH clean
     59 
     60 	Also, for architectures with MKCOMPAT, it is necessary to clean
     61 	the compat objdirs too.  The easiest way is:
     62 
     63 	rm -rf OBJDIR/compat/*/*/external/bsd/file/lib
     64 	rm -rf OBJDIR/compat/*/*/external/bsd/libarchive/lib
     65 	rm -rf OBJDIR/compat/*/*/external/public-domain/xz/lib
     66 
     67 	Changes to bsd.lib.mk to improve detecting differences in
     68 	shared library symbol exports may cause some .actsym files in
     69 	the objdir to become stale in update builds.
     70 
     71 	To work around this, delete all files matching `*.actsym' in
     72 	the objdir.  For example:
     73 
     74 	find OBJDIR -name '*.actsym' -type f -print0 | xargs -0 rm
     75 
     76 20241104:
     77 	Changes around the integration of the zstd compression
     78 	library may require manual deletion of some object directories
     79 	if you update from a build from a few days ago:
     80 	rm -rf DESTDIR/usr/lib/*/libarchive*
     81 	rm -rf DESTDIR/usr/lib/*/libmagic*
     82 	rm -rf DESTDIR/usr/lib/*/libzstd*
     83 	rm -rf DESTDIR/usr/lib/libarchive*
     84 	rm -rf DESTDIR/usr/lib/libmagic*
     85 	rm -rf DESTDIR/usr/lib/libzstd*
     86 	rm -rf OBJDIR/compat/*/*/external/bsd/file/
     87 	rm -rf OBJDIR/compat/*/*/external/bsd/libarchive/
     88 	rm -rf OBJDIR/compat/*/*/external/bsd/zstd/
     89 	rm -rf OBJDIR/external/bsd/file/
     90 	rm -rf OBJDIR/external/bsd/libarchive/
     91 	rm -rf OBJDIR/external/bsd/zstd/
     92 	rm -rf OBJDIR/external/gpl3/gcc/
     93 	rm -rf OBJDIR/tools/gcc/
     94 
     95 20240926:
     96 	Building -current when running on amd64 from about 20240924
     97 	to about 20240926 will not work due to a "malloc_np.h"
     98 	error. Please downgrade to a version from 20240924 or older,
     99 	or upgrade to a newer version e.g. using a binary release from
    100 	the NetBSD build servers.
    101 
    102 20240923:
    103 	Update builds will require cleaning the object directories for
    104 	jemalloc (like: "rm -rf $OBJ/external/bsd/jemalloc*") and the
    105 	libc dependency files (like: "rm $OBJ/lib/libc/jemalloc.*").
    106 	On architectures with COMPAT libs, those also have to be cleaned,
    107 	e.g. on sparc64: "rm -rf $OBJ/compat/sparc64/sparc/external/bsd/jemalloc*"
    108 	and "rm $OBJ/compat/sparc64/sparc/lib/libc/jemalloc.*".
    109 
    110 20240920:
    111 	Update builds will require cleaning in src/external/historical/nawk/bin
    112 	in order to remove the awk subdirectory since there is now a binary
    113 	called awk.
    114 
    115 20240817:
    116 	Update builds will require cleaning in src/external/historical/nawk/bin
    117 	in order to remove the awk binary since now there is a subdirectory
    118 	called awk.
    119 
    120 20240812:
    121 	Update builds will require removing the tools objdir for gdb
    122 	if building with MKCROSSGDB=yes. All architectures use gdb.old
    123 	now.
    124 
    125 20240630:
    126 	Update builds will require removing the tools objdir for binutils
    127 	(as most architectures should use binutils.old now).
    128 
    129 20240610:
    130 	Update builds are likely to require removing the objdir for
    131 	distrib/<arch>/cdroms - or at least references to libarchive
    132 	from within there after the recent libarchive update.
    133 
    134 20240504:
    135 	Update builds on x86 require making the `cleandir' target in
    136 	lib/libm, or deleting the objdir for lib/libm.
    137 
    138 20240423:
    139 	Update builds with x11 may fail after switching to Mesa 21.
    140 
    141 20240410:
    142 	Update builds may require manually deleting
    143 	$DESTDIR/var/run/named (and, potentially,
    144 	$DESTDIR/var/run/lwresd) in order to avoid checkflist failure.
    145 
    146 20240409:
    147 	32-bit compatibility libraries were moved into the base32
    148 	and debug32 sets.  HTML man pages were moved into the manhtml set.
    149 
    150 20230828:
    151 	If:
    152         - you updated to current and ran postinstall between 20230826
    153 	  and 20230828 inclusive, and
    154         - you are not using anything outside the base system to
    155 	  populate /etc/openssl/certs (e.g., manually adding
    156 	  certificates or using ca-certificates or mozilla-rootcerts or
    157 	  mozilla-rootcerts-openssl from pkgsrc),
    158 	delete /etc/openssl/certs and rerun postinstall or just
    159 	`certctl rehash'.
    160 
    161 	Otherwise, certctl(8) will think someone else has left
    162 	/etc/openssl/certs in the way and will avoid clobbering it on
    163 	upgrade from older NetBSD.
    164 
    165 20230718:
    166 	build.sh will use mk.conf in the same directory as build.sh instead
    167 	of /etc/mk.conf, unless MAKECONF is already defined in the environment.
    168 
    169 20230714:
    170 	Import of gcc 10.5 requires a clean build of at least tools/gcc
    171 	and external/gpl3/gcc* object directories. An update build
    172 	without cleaning will result in obscure failures in rare corner
    173 	cases.
    174 
    175 20230604:
    176 	Building native kernels with the installed make(1) instead of
    177 	the $TOOLDIR/bin/nbmake-${arch} wrapper will fail if userland
    178 	has not been updated. Note that this is an unsupported build
    179 	configuration (but usually works if userland is -current enough).
    180 
    181 20230523:
    182 	ctfmerge was fixed as macOS host tool. This may require a clean tools
    183 	rebuild to detect the update to tools/compat/configure.
    184 
    185 20230515:
    186 	New openssl build requires removal of the crypto/external/bsd/openssl
    187 	and tests/crypto/libcrypto subdirectories in the ${OBJDIR} hierarchy.
    188 	Otherwise test results may be wrong due to wrong "golden" output
    189 	files being installed.
    190 
    191 20230322:
    192 	Fixes for moved /lib/libisns* mean that builds will complain about
    193 	./usr/lib/libisns* being missing until src/lib/libisns is forced
    194 	to (re)install the files, including the symlinks.  The simplest
    195 	way is to clean this subdir before building.
    196 
    197 20230112:
    198 	New binutils require an updated ld.elf_so. If you are doing
    199 	(unsupported) in-place self builds (with the -E flag to build.sh),
    200 	make sure to have installed latest ld.elf_so before you rebuild
    201 	userland.
    202 
    203 20221116:
    204 	The addition to NetBSD's version of UFS2 of support for extended
    205 	attributes broke backward compatibility with previous releases
    206 	of NetBSD, so UFS2 has been restored to being compatible with
    207 	previous NetBSD releases by disabling extended attributes.
    208 	(Note that ACLs are implemented as extended attributes, so
    209 	this changes disables ACLs as well.)
    210 
    211 	Support for UFS2 with extended attributes is now available in a new
    212 	UFS variant called UFS2ea.  If you have created extended attributes
    213 	in an original UFS2 file system then "fsck -p" will now fail due to
    214 	the unexpected presence of extended attributes and "fsck -y" will
    215 	remove all extended attributes.  If you wish to preserve extended
    216 	attributes rather than delete them, there is a utility to convert
    217 	a UFS2 file system to UFS2ea and leave extended attributes in place,
    218 	but this should be used with caution since it will preserve any
    219 	extended attributes that have been corrupted by the backward
    220 	incompatibility too.
    221 
    222 	If you wish to use a UFS2ea file system as your root file system,
    223 	then you will need to update your boot loader to a version that
    224 	supports UFS2ea.
    225 
    226 	For more information, see:
    227 	https://wiki.netbsd.org/features/UFS2ea
    228 
    229 20221111:
    230 	The new libdrm import worsened the conflict issues for the
    231 	kdump/ktruss ioctl, and i915 now conflicts with base, and has
    232 	been turned off.  This will cause update build issues like:
    233 
    234 		kdump-ioctl.c:12175:143: error: 'DRM_IOCTL_I915_DESTROY_HEAP'
    235 		   undeclared here (not in a function);
    236 		   did you mean 'DRM_IOCTL_MODE_DESTROY_DUMB'?
    237 
    238 	You'll need to clean usr.bin/ktruss, usr.bin/kdump, and rescue.
    239 
    240 20220921:
    241 	Since the kernel version was bumped to 9.99.100, the bootloader
    242 	must be updated on x86 or EFI boot platforms in order to load
    243 	modules from boot.cfg(5) or interactively at the bootloader
    244 	prompt.
    245 
    246 	The kernel can still load modules at runtime, with modload(8)
    247 	or modules.conf(5), with no bootloader update.  This will not
    248 	affect release branches because it only applies to patch
    249 	numbers >=100.
    250 
    251 	On x86 (i386 or amd64) with BIOS boot, this requires copying a
    252 	new /usr/mdec/boot to /boot.  You can build this in the destdir
    253 	by running `$TOOLDIR/bin/nbmake-$ARCH dependall install' in
    254 	sys/arch/i386/stand.
    255 
    256 	On platforms with EFI boot (including x86 with EFI boot), this
    257 	requires copying a new /usr/mdec/boot*.efi to the EFI/BOOT/
    258 	directory on the EFI system partition.  The boot*.efi file is:
    259 
    260 	aarch64	bootaa64.efi
    261 	amd64	bootx64.efi
    262 	arm	bootarm.efi	(32-bit arm)
    263 	i386	bootx32.efi
    264 
    265 	You can build this in the destdir by running
    266 	`$TOOLDIR/bin/nbmake-$ARCH dependall install' in
    267 	sys/stand/efiboot/boot*.
    268 
    269 20220821:
    270 	Support for building extsrc/ has been deprecated.
    271 	EXTSRCSRCDIR and MKEXTSRC have been deprecated.
    272 
    273 20220714:
    274 	Updates to xorg-server and associated drivers may cause builds to
    275 	fail.  Cleaning both DESTDIR and the xorg build tree may be needed.
    276 
    277 20220628:
    278 	Changes in the build of src/games/robots require a clean build
    279 	of that program.
    280 
    281 20211116:
    282 	Changes in the xorg build require clean obj dirs for external/mit/xorg
    283 	(or a full clean/non-update build).
    284 
    285 20211112:
    286 	Device tree sources were updated for evbarm.  Some device nodes
    287 	(in particular, ld(4) devices on the ROCKPro64) will be renumbered.
    288 
    289 20211014:
    290 	MKPIE default for aarch64 has changed, a clean build is required.
    291 
    292 20210917:
    293 	Changed MNT_ACLS to default to POSIX1e ACLs instead of NFSv4
    294 	ACLs, to be compatible with FreeBSD. If you are using NFSv4 ACLs
    295 	and have "acls" in /etc/fstab you'll need to change it to "nfs4acls".
    296 
    297 20210711:
    298 	Updated GMP sources may require cleaning in tools/gmp and/or in
    299 	external/lgpl3/gmp/lib, particularly if GCC itself does not build.
    300 
    301 20210417:
    302 	GCC 10 was enabled for several platforms.  If builds fail in either
    303 	tools/gcc or external/gpl3/gcc, first try cleaning those objects and
    304 	removing the $DESTDIR/usr/include/g++ subdirectory.
    305 
    306 20201016:
    307 	MIPS kernel modules have been disabled until they work.  This will
    308 	turn up in extra files in the DESTDIR, which should be cleaned.
    309 
    310 20200925:
    311 	GNU MPC and MPFR have been updated.  At least MPFR needs cleaning
    312 	in both the tools and external dirs.
    313 
    314 20200912:
    315 	GCC 9 has arrived for Arm and x86 platforms, and will be coming
    316 	for several more, as will binutils 2.34.  Clean as required.
    317 
    318 20200907:
    319 	GCC 9 is coming, and binutils has been updated for MIPS.  This
    320 	probably requires cleaning the tools/binutils.
    321 
    322 20200811:
    323 	GCC updates may require cleaning the objdir.  This may occur
    324 	due to GCC 7.5 update, GCC 8.4 move to gcc.old, or the upcoming
    325 	GCC 9 upgrade.
    326 
    327 20200614:
    328 	blacklist* has been renamed to blocklist*. postinstall(8)
    329 	should handle the migration.
    330 
    331 20200601:
    332 	Due to a mistake in LIBISPRIVATE handling, .so libraries were
    333 	created in the build directories and need cleaning.
    334 
    335 20200311:
    336 	GCC 8 ports will need cleaning in src/tools/gcc and
    337 	src/external/gpl3/gcc due to GCC 8.4 update.
    338 
    339 20191118:
    340 	More architectures were switched to gcc8:
    341 	    i386, ia64 powerpc64, sparc, sparc64, arm
    342 	The same comments as in 20191022 apply.
    343 
    344 20191112:
    345 	The LLVM update requires a clean rebuild for all architectures using
    346 	LLVM during the tools build phase (i386, amd64, aarch64).
    347 
    348 20191022:
    349 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
    350 	In-place ("expert mode", build.sh -E) builds are not supported
    351 	when going from a GCC 7 userland to GCC 8. Do a regular
    352 	build to a different DESTDIR (or preferably: build.sh -U) at least
    353 	once and install sets, or download comp.{tar.xz,tgz} from the
    354 	daily builds and install that before doing the next in-place build.
    355 
    356 20191001:
    357 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
    358 	old builds with GCC 7 output now uses GCC 8.  Clean this
    359 	directory, and also clean src/external/gpl3/gcc.
    360 
    361 20190903:
    362 	Files with names that coincide with existing files' names on
    363 	case-insensitive file systems were inadvertently committed, for
    364 	radeon GPU firmware.  We cannot mark these as obsolete for
    365 	postinstall to fix, so if you updated src since 2019-08-26, and
    366 	ran build.sh distribution or ran build.sh release, you must
    367 	manually delete the following files in your DESTDIR (which is
    368 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
    369 	them:
    370 
    371 		/libdata/firmware/radeon/bonaire_ce.bin
    372 		/libdata/firmware/radeon/bonaire_mc.bin
    373 		/libdata/firmware/radeon/bonaire_me.bin
    374 		/libdata/firmware/radeon/bonaire_mec.bin
    375 		/libdata/firmware/radeon/bonaire_pfp.bin
    376 		/libdata/firmware/radeon/bonaire_rlc.bin
    377 		/libdata/firmware/radeon/bonaire_sdma.bin
    378 		/libdata/firmware/radeon/bonaire_smc.bin
    379 		/libdata/firmware/radeon/bonaire_uvd.bin
    380 		/libdata/firmware/radeon/hainan_ce.bin
    381 		/libdata/firmware/radeon/hainan_mc.bin
    382 		/libdata/firmware/radeon/hainan_me.bin
    383 		/libdata/firmware/radeon/hainan_pfp.bin
    384 		/libdata/firmware/radeon/hainan_rlc.bin
    385 		/libdata/firmware/radeon/hainan_smc.bin
    386 		/libdata/firmware/radeon/hawaii_ce.bin
    387 		/libdata/firmware/radeon/hawaii_mc.bin
    388 		/libdata/firmware/radeon/hawaii_me.bin
    389 		/libdata/firmware/radeon/hawaii_mec.bin
    390 		/libdata/firmware/radeon/hawaii_pfp.bin
    391 		/libdata/firmware/radeon/hawaii_rlc.bin
    392 		/libdata/firmware/radeon/hawaii_sdma.bin
    393 		/libdata/firmware/radeon/hawaii_smc.bin
    394 		/libdata/firmware/radeon/kabini_ce.bin
    395 		/libdata/firmware/radeon/kabini_me.bin
    396 		/libdata/firmware/radeon/kabini_mec.bin
    397 		/libdata/firmware/radeon/kabini_pfp.bin
    398 		/libdata/firmware/radeon/kabini_rlc.bin
    399 		/libdata/firmware/radeon/kabini_sdma.bin
    400 		/libdata/firmware/radeon/kaveri_ce.bin
    401 		/libdata/firmware/radeon/kaveri_me.bin
    402 		/libdata/firmware/radeon/kaveri_mec.bin
    403 		/libdata/firmware/radeon/kaveri_mec2.bin
    404 		/libdata/firmware/radeon/kaveri_pfp.bin
    405 		/libdata/firmware/radeon/kaveri_rlc.bin
    406 		/libdata/firmware/radeon/kaveri_sdma.bin
    407 		/libdata/firmware/radeon/mullins_ce.bin
    408 		/libdata/firmware/radeon/mullins_me.bin
    409 		/libdata/firmware/radeon/mullins_mec.bin
    410 		/libdata/firmware/radeon/mullins_pfp.bin
    411 		/libdata/firmware/radeon/mullins_rlc.bin
    412 		/libdata/firmware/radeon/mullins_sdma.bin
    413 		/libdata/firmware/radeon/oland_ce.bin
    414 		/libdata/firmware/radeon/oland_mc.bin
    415 		/libdata/firmware/radeon/oland_me.bin
    416 		/libdata/firmware/radeon/oland_pfp.bin
    417 		/libdata/firmware/radeon/oland_rlc.bin
    418 		/libdata/firmware/radeon/oland_smc.bin
    419 		/libdata/firmware/radeon/pitcairn_ce.bin
    420 		/libdata/firmware/radeon/pitcairn_mc.bin
    421 		/libdata/firmware/radeon/pitcairn_me.bin
    422 		/libdata/firmware/radeon/pitcairn_pfp.bin
    423 		/libdata/firmware/radeon/pitcairn_rlc.bin
    424 		/libdata/firmware/radeon/pitcairn_smc.bin
    425 		/libdata/firmware/radeon/tahiti_ce.bin
    426 		/libdata/firmware/radeon/tahiti_mc.bin
    427 		/libdata/firmware/radeon/tahiti_me.bin
    428 		/libdata/firmware/radeon/tahiti_pfp.bin
    429 		/libdata/firmware/radeon/tahiti_rlc.bin
    430 		/libdata/firmware/radeon/tahiti_smc.bin
    431 		/libdata/firmware/radeon/verde_ce.bin
    432 		/libdata/firmware/radeon/verde_mc.bin
    433 		/libdata/firmware/radeon/verde_me.bin
    434 		/libdata/firmware/radeon/verde_pfp.bin
    435 		/libdata/firmware/radeon/verde_rlc.bin
    436 		/libdata/firmware/radeon/verde_smc.bin
    437 
    438 	We will re-import these radeon firmware images another way
    439 	later.
    440 
    441 20190727:
    442 	The uefi bootloader has gained tftp support and needs a clean
    443 	build. If you do update builds, manually clean its object
    444 	directory by something like:
    445 	cd sys/arch/i386/stand/efiboot && make clean
    446 
    447 20190723:
    448 	The jemalloc allocator in libc is now built without extended
    449 	debugging (for performance reasons). In update builds make sure
    450 	to rebuild it completely, by removing all affected object files,
    451 	including compat builds, something like:
    452 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    453 
    454 20190207:
    455 	GCC 7 switched for many ports.  Update builds are likely to fail.
    456 
    457 Hints for a more successful build:
    458 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    459     Use build.sh, but do not use its "expert mode":
    460 	This will automatically build the tools in the
    461 	   correct order, and it will keep the tools and the
    462 	   new build products from interfering with the running
    463 	   system.  This will allow you to ignore most of the
    464 	   other advice in this file.
    465     Build a new kernel first:
    466 	This makes sure that any new system calls or features
    467 	   expected by the new userland will be present.  This
    468 	   helps to avoid critical errors when upgrading.
    469     Use object directories:
    470 	This helps to keep stale object
    471 	   files from polluting the build if a Makefile "forgets"
    472 	   about one.  It also makes it easier to clean up after
    473 	   a build.  It's also necessary if you want to use the
    474 	   same source tree for multiple machines.
    475 	   To use object directories with build.sh:
    476 	    a) invoke build.sh with the "-M" or "-O" options.
    477 	   To use object directories without using build.sh:
    478 	    a) cd /usr/src ; make cleandir
    479 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    480 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    481 	    d) cd /usr/src ; make build
    482 	   Note that running "make obj" in a directory will create
    483 	   in obj.$MACHINE directory.
    484     Build to a DESTDIR:
    485 	This helps to keep old installed files (especially libraries)
    486 	   from interfering with the new build.
    487 	   To build to a DESTDIR with build.sh, use the "-D" option.
    488 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    489 	   environment variable before running make build.  It should be
    490 	   set to the pathname of an initially empty directory.
    491 	   Problems: if you do not use build.sh, you might need to
    492 		update critical utilities without using DESTDIR since
    493 		nothing is executed from what is installed in DESTDIR.
    494 		(See critical utils, below.)
    495     Build often:
    496 	This keeps critical utilities current enough to not choke
    497 	on any other part of the source tree that depends on up to
    498 	date functionality.  If you use build.sh, you should not have
    499 	this problem.
    500 
    501 What to do if things don't work:
    502 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    503 When things don't work there are usually a few things that commonly
    504 should be done.
    505     1)	make includes
    506 	This should be done automatically by make build.
    507     2)  cd share/mk && make install
    508 	Again, automatically done by make build.
    509 
    510 Failsafe rebuild of a small part of the tree:
    511 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    512 To make sure you rebuild something correctly you want to do
    513 something like the following:
    514     1)  Make sure the includes and .mk files are up to date.
    515     2)  Make sure any program used to build the particular
    516 	utility is up to date.  (yacc, lex, etc...)
    517     3)  cd ...path/to/util...
    518 	make cleandir
    519 	rm ...all obj directories...
    520 	make cleandir			# yes, again
    521 	make obj
    522 	make depend && make
    523 
    524 Failsafe rebuild of the entire tree:
    525 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    526 If you really want to make sure the source tree is clean and
    527 ready for a build try the following.  Note that sourcing /etc/mk.conf
    528 (a make(1) Makefile) in this manner is not right, and will not work
    529 for anyone who uses any make(1) features in /etc/mk.conf.
    530 
    531 ---cut here---
    532 #!/bin/sh
    533 . /etc/mk.conf
    534 
    535 if [ -z $NETBSDSRCDIR ] ; then
    536     NETBSDSRCDIR=/usr/src
    537 fi
    538 if [ \! -d $NETBSDSRCDIR ] ; then
    539     echo Unable to find sources
    540     exit 1
    541 fi
    542 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    543 
    544 if [ -z $BSDOBJDIR ] ; then
    545     BSDOBJDIR=/usr/obj
    546 fi
    547 if [ -d $BSDOBJDIR ] ; then
    548     rm -rf $BSDOBJDIR
    549 fi
    550 
    551 cd $NETBSDSRCDIR && make cleandir
    552 
    553 ---cut here---
    554 
    555 Critical utilities:
    556 ^^^^^^^^^^^^^^^^^^^
    557 	usr.bin/make
    558 	usr.bin/yacc
    559 	usr.bin/lex
    560 	usr.bin/xlint
    561 	usr.bin/config
    562 
    563 Other problems and possible solutions:
    564 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    565 Symptom:Complaints involving a Makefile.
    566 Fix:	Rebuild usr.bin/make:
    567 	cd usr.bin/make && make && make install
    568 	Or, a failsafe method if that doesn't work:
    569 	cd usr.bin/make && cc -DMAKE_NATIVE *.c -I. -o make \
    570 	&& install make /usr/bin
    571 
    572 Fix:	Make sure .mk files are up to date.
    573 	cd share/mk && make install
    574 
    575 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    576 Fix:	Rebuild usr.bin/config
    577 
    578 Symptom:Obsolete intermediate files are used during compilation
    579 Fix:	Try the following sequence of commands in the directory in question.
    580 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    581 	(If you built the tree without "make obj" in the past, obsolete files
    582 	may remain.  The command tries to clean everything up)
    583 
    584 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
    585 	pointer type
    586 Fix:	Rebuild and install usr.bin/menuc
    587 
    588 Symptom:mklocale not found during build in share/locale/ctype
    589 Fix:	Build and install usr.bin/mklocale
    590 
    591 Symptom:undefined reference to `__assert13' or `__unsetenv13'
    592 Fix:    Rebuild and install lib/libc
    593 
    594 Symptom:usr.bin/config fails to build.
    595 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
    596 
    597 Symptom:undefined reference to `getprogname' or `setprogname'
    598 Fix:    Rebuild and install lib/libc
    599 
    600 Symptom:Update build fails in src/tools/gcc complaining that a variable
    601 	(e.g. CPPFLAGS) has changed since the previous run.
    602 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
    603 
    604 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
    605 	No such file or directory.
    606 Cause:	If a directory is created by mistake, then it is sometimes
    607 	deleted from the CVS repository using administrative commands
    608 	that bypass the normal cvs access controls.  If your cvs working tree
    609 	contains references to a directory that has been deleted on the
    610 	server in this way, then "cvs update" reports this error.
    611 Fix:	Recursively delete the affected directory from your working tree
    612 	and try the update again.
    613