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UPDATING revision 1.332
      1 $NetBSD: UPDATING,v 1.332 2022/09/21 22:01:56 gutteridge 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 20220921:
     23 	Since the kernel version was bumped to 9.99.100, the bootloader
     24 	must be updated on x86 and efiboot platforms in order to load
     25 	modules.
     26 
     27 	The kernel can still load modules at runtime with no bootloader
     28 	update.  This will not affect release branches because it only
     29 	applies to patch numbers >=100.
     30 
     31 20220821:
     32 	Support for building extsrc/ has been deprecated.
     33 	EXTSRCSRCDIR and MKEXTSRC have been deprecated.
     34 
     35 20220714:
     36 	Updates to xorg-server and associated drivers may cause builds to
     37 	fail.  Cleaning both DESTDIR and the xorg build tree may be needed.
     38 
     39 20220628:
     40 	Changes in the build of src/games/robots require a clean build
     41 	of that program.
     42 
     43 20211116:
     44 	Changes in the xorg build require clean obj dirs for external/mit/xorg
     45 	(or a full clean/non-update build).
     46 
     47 20211112:
     48 	Device tree sources were updated for evbarm.  Some device nodes
     49 	(in particular, ld(4) devices on the ROCKPro64) will be renumbered.
     50 
     51 20211014:
     52 	MKPIE default for aarch64 has changed, a clean build is required.
     53 
     54 20210917:
     55 	Changed MNT_ACLS to default to POSIX1e ACLs instead of NFSv4
     56 	ACLs, to be compatible with FreeBSD. If you are using NFSv4 ACLs
     57 	and have "acls" in /etc/fstab you'll need to change it to "nfs4acls".
     58 
     59 20210711:
     60 	Updated GMP sources may require cleaning in tools/gmp and/or in
     61 	external/lgpl3/gmp/lib, particularly if GCC itself does not build.
     62 
     63 20210417:
     64 	GCC 10 was enabled for several platforms.  If builds fail in either
     65 	tools/gcc or external/gpl/gcc, first try cleaning those objects and
     66 	removing the $DESTDIR/usr/include/g++ subdirectory.
     67 
     68 20201230:
     69 	lint1/ops.c is no longer autogenerated.  If this makes the build
     70 	fail, clean $OBJDIR/tools/*lint* and $OBJDIR/usr.bin/*xlint*.
     71 
     72 20201016:
     73 	MIPS kernel modules have been disabled until they work.  This will
     74 	turn up in extra files in the DESTDIR, which should be cleaned.
     75 
     76 20200925:
     77 	GNU MPC and MPFR have been updated.  At least MPFR needs cleaning
     78 	in both the tools and external dirs.
     79 
     80 20200912:
     81 	GCC 9 has arrived for Arm and x86 platforms, and will be coming
     82 	for several more, as will binutils 2.34.  Clean as required.
     83 
     84 20200907:
     85 	GCC 9 is coming, and binutils has been updated for MIPS.  This
     86 	probably requires cleaning the tools/binutils.
     87 
     88 20200811:
     89 	GCC updates may require cleaning the objdir.  This may occur
     90 	due to GCC 7.5 update, GCC 8.4 move to gcc.old, or the upcoming
     91 	GCC 9 upgrade.
     92 
     93 20200614:
     94 	blacklist* has been renamed to blocklist*. postinstall(8)
     95 	should handle the migration.
     96 
     97 20200601:
     98 	Due to a mistake in LIBISPRIVATE handling, .so libraries were
     99 	created in the build directories and need cleaning.
    100 
    101 20200311:
    102 	GCC 8 ports will need cleaning in src/tools/gcc and
    103 	src/external/gpl3/gcc due to GCC 8.4 update.
    104 
    105 20191118:
    106 	More architectures were switched to gcc8:
    107 	    i386, ia64 powerpc64, sparc, sparc64, arm
    108 	The same comments as in 20191022 apply.
    109 
    110 20191112:
    111 	The LLVM update requires a clean rebuild for all architectures using
    112 	LLVM during the tools build phase (i386, amd64, aarch64).
    113 
    114 20191022:
    115 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
    116 	In-place ("expert mode", build.sh -E) builds are not supported
    117 	when going from a GCC 7 userland to GCC 8. Do a regular
    118 	build to a different DESTDIR (or preferably: build.sh -U) at least
    119 	once and install sets, or download comp.{tar.xz,tgz} from the
    120 	daily builds and install that before doing the next in-place build.
    121 
    122 20191001:
    123 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
    124 	old builds with GCC 7 output now uses GCC 8.  Clean this
    125 	directory, and also clean src/external/gpl3/gcc.
    126 
    127 20190903:
    128 	Files with names that coincide with existing files' names on
    129 	case-insensitive file systems were inadvertently committed, for
    130 	radeon GPU firmware.  We cannot mark these as obsolete for
    131 	postinstall to fix, so if you updated src since 2019-08-26, and
    132 	ran build.sh distribution or ran build.sh release, you must
    133 	manually delete the following files in your DESTDIR (which is
    134 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
    135 	them:
    136 
    137 		/libdata/firmware/radeon/bonaire_ce.bin
    138 		/libdata/firmware/radeon/bonaire_mc.bin
    139 		/libdata/firmware/radeon/bonaire_me.bin
    140 		/libdata/firmware/radeon/bonaire_mec.bin
    141 		/libdata/firmware/radeon/bonaire_pfp.bin
    142 		/libdata/firmware/radeon/bonaire_rlc.bin
    143 		/libdata/firmware/radeon/bonaire_sdma.bin
    144 		/libdata/firmware/radeon/bonaire_smc.bin
    145 		/libdata/firmware/radeon/bonaire_uvd.bin
    146 		/libdata/firmware/radeon/hainan_ce.bin
    147 		/libdata/firmware/radeon/hainan_mc.bin
    148 		/libdata/firmware/radeon/hainan_me.bin
    149 		/libdata/firmware/radeon/hainan_pfp.bin
    150 		/libdata/firmware/radeon/hainan_rlc.bin
    151 		/libdata/firmware/radeon/hainan_smc.bin
    152 		/libdata/firmware/radeon/hawaii_ce.bin
    153 		/libdata/firmware/radeon/hawaii_mc.bin
    154 		/libdata/firmware/radeon/hawaii_me.bin
    155 		/libdata/firmware/radeon/hawaii_mec.bin
    156 		/libdata/firmware/radeon/hawaii_pfp.bin
    157 		/libdata/firmware/radeon/hawaii_rlc.bin
    158 		/libdata/firmware/radeon/hawaii_sdma.bin
    159 		/libdata/firmware/radeon/hawaii_smc.bin
    160 		/libdata/firmware/radeon/kabini_ce.bin
    161 		/libdata/firmware/radeon/kabini_me.bin
    162 		/libdata/firmware/radeon/kabini_mec.bin
    163 		/libdata/firmware/radeon/kabini_pfp.bin
    164 		/libdata/firmware/radeon/kabini_rlc.bin
    165 		/libdata/firmware/radeon/kabini_sdma.bin
    166 		/libdata/firmware/radeon/kaveri_ce.bin
    167 		/libdata/firmware/radeon/kaveri_me.bin
    168 		/libdata/firmware/radeon/kaveri_mec.bin
    169 		/libdata/firmware/radeon/kaveri_mec2.bin
    170 		/libdata/firmware/radeon/kaveri_pfp.bin
    171 		/libdata/firmware/radeon/kaveri_rlc.bin
    172 		/libdata/firmware/radeon/kaveri_sdma.bin
    173 		/libdata/firmware/radeon/mullins_ce.bin
    174 		/libdata/firmware/radeon/mullins_me.bin
    175 		/libdata/firmware/radeon/mullins_mec.bin
    176 		/libdata/firmware/radeon/mullins_pfp.bin
    177 		/libdata/firmware/radeon/mullins_rlc.bin
    178 		/libdata/firmware/radeon/mullins_sdma.bin
    179 		/libdata/firmware/radeon/oland_ce.bin
    180 		/libdata/firmware/radeon/oland_mc.bin
    181 		/libdata/firmware/radeon/oland_me.bin
    182 		/libdata/firmware/radeon/oland_pfp.bin
    183 		/libdata/firmware/radeon/oland_rlc.bin
    184 		/libdata/firmware/radeon/oland_smc.bin
    185 		/libdata/firmware/radeon/pitcairn_ce.bin
    186 		/libdata/firmware/radeon/pitcairn_mc.bin
    187 		/libdata/firmware/radeon/pitcairn_me.bin
    188 		/libdata/firmware/radeon/pitcairn_pfp.bin
    189 		/libdata/firmware/radeon/pitcairn_rlc.bin
    190 		/libdata/firmware/radeon/pitcairn_smc.bin
    191 		/libdata/firmware/radeon/tahiti_ce.bin
    192 		/libdata/firmware/radeon/tahiti_mc.bin
    193 		/libdata/firmware/radeon/tahiti_me.bin
    194 		/libdata/firmware/radeon/tahiti_pfp.bin
    195 		/libdata/firmware/radeon/tahiti_rlc.bin
    196 		/libdata/firmware/radeon/tahiti_smc.bin
    197 		/libdata/firmware/radeon/verde_ce.bin
    198 		/libdata/firmware/radeon/verde_mc.bin
    199 		/libdata/firmware/radeon/verde_me.bin
    200 		/libdata/firmware/radeon/verde_pfp.bin
    201 		/libdata/firmware/radeon/verde_rlc.bin
    202 		/libdata/firmware/radeon/verde_smc.bin
    203 
    204 	We will re-import these radeon firmware images another way
    205 	later.
    206 
    207 20190727:
    208 	The uefi bootloader has gained tftp support and needs a clean
    209 	build. If you do update builds, manually clean its object
    210 	directory by something like:
    211 	cd sys/arch/i386/stand/efiboot && make clean
    212 
    213 20190723:
    214 	The jemalloc allocator in libc is now build without extended
    215 	debugging (for performance reasons). In update builds make sure
    216 	to rebuild it completely, by removing all affected object files,
    217 	including compat builds, something like:
    218 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    219 
    220 20190207:
    221 	GCC 7 switched for many ports.  Update builds are likely to fail.
    222 
    223 20180924:
    224 	A newer OpenSSL version has been imported. If you are doing
    225 	update builds, make sure to remove all old obj dirs, like:
    226 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    227 
    228 20180717:
    229 	On aarch64 int64_t and related types have changed from long long
    230 	to long. This requires recompiling all C++ binaries.
    231 
    232 20180713:
    233 	On amd64 and i386 static binaries are now build position
    234 	independend. This requires recompilation of all object
    235 	files used to create the crunched /rescue binary.
    236 	Clean the rescue directory in your obj directory before
    237 	doing an update build, otherwise linking will fail.
    238 
    239 20180414:
    240 	Existing binutils was migrated to binutils.old.  Manual
    241 	removal of tools/binutils objects directory may be required
    242 	to fix tools build failure.
    243 
    244 20180311:
    245 	bdftopcf was updated and may need cleaning in the
    246 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    247 	link errors.
    248 
    249 20180212:
    250 	between OpenSSL and GCC updates, many things may fail to build.
    251 	any failure that looks like GCC or openssl is best handled by
    252 	a clean destdir and objdir.  Full cleandir and destdir deletion
    253 	is recommended if build failures occur.
    254 
    255 20171225:
    256 	removal of the vadvise syscall requires manual removal of all
    257 	associated files from the libc build object directory (including
    258 	the .depend files) - a command like:
    259 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    260 	For architectures that support multiple "compat" binary targets,
    261 	you'll need to cleanup both the regular libc directory and the
    262 	compat ones (the above command will do that).
    263 
    264 20171010:
    265 	a change to the build structure of external/bsd/acpica/bin/iasl
    266 	means that its objdir (or *.d and .depend at least) might need
    267 	to be manually removed - or a build done once without -u.
    268 
    269 20170822:
    270 	a new version of GMP has been imported and probably
    271 	will break parts of builds related to themselves or GCC, both
    272 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    273 	and MPC objdirs or build once without -u.
    274 
    275 20170816:
    276 	a new version of MPFR and MPC have been imported and probably
    277 	will break parts of builds related to themselves or GCC, both
    278 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    279 	and MPC objdirs or build once without -u.
    280 
    281 20170402:
    282 	a new version of dhcpcd has been imported, which does not support
    283 	update builds from the previous version. Remove your
    284 	external/bsd/dhcpcd object dir or build once without -u.
    285 
    286 20170211:
    287 	a new terminfo database has been imported.
    288 	The structure of it has changed slightly from prior versions and
    289 	an updated tic tool is required.
    290 	If you build.sh, don't use -u
    291 
    292 20170207:
    293 	various arch dependent libc/exect.S files were removed
    294 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    295 	if it exists) or do a clean build.
    296 	(This is a bug in the make system, it should be corrected without
    297 	human intervention, but isn't.)
    298 
    299 20170104:
    300 	xinput build options have changed.
    301 	Remove the obj directory (external/mit/xorg/bin/xinput)
    302 	if you build.sh -u
    303 
    304 20170103:
    305 	a new version of flex has been imported.
    306 	Remove the file from obj (external/bsd/flex)
    307 	if you build.sh -u
    308 
    309 20161014:
    310 	a new version of OpenSSL has been imported.
    311 	Remove the files from obj (crypto/external/bsd/openssl) 
    312 	if you build.sh -u
    313 
    314 20161009:
    315 	a new version of dhcpcd has been imported with slightly changed
    316 	build infrastructure. When doing a build.sh -u this requires
    317 	pruning the external/bsd/dhcpcd objdir.
    318 
    319 20160914:
    320 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    321 	ports in using xorg-server 1.18. This requires a clean destdir
    322 	and a clean objdir.
    323 
    324 20160527:
    325 	i386 needs a full cleandir or objdir deletion because PIE has
    326 	been enabled. (see the amd64 entry two down for further info)
    327 
    328 20160418:
    329 	libedit needs manual removal of all autogenerated files since
    330 	some of them are not autogenerated anymore. Remember that there
    331 	might be two copies of libedit if your platform builds "compat".
    332 
    333 20160410:
    334 	amd64 needs full "make cleandir" or deletion of objdir now that
    335 	PIE has been enabled for amd64.  PIE, or position-independent
    336 	executables, means all code, including executables and not just
    337 	shared libraries, is position-independent and hence able to be
    338 	relocated by ASLR, address space layout randomization.
    339 
    340 	The change was made in Makefile variables for compiler and
    341 	linker flags, for which make(1) does not record dependencies,
    342 	hence it is unable to detect that all .o files need rebuilding.
    343 
    344 	Partial rebuilds with some modified source files will likely
    345 	fail when linking executables, since the linker refuses to mix
    346 	position-independent code with position-dependent code in
    347 	position-independent executables:
    348 
    349 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    350 
    351 20160401:
    352 	Ports switching to GCC 5.3 will need a full "make cleandir".
    353 	Some people have found that cleandir is not sufficient, so if
    354 	in doubt delete the entire object directory tree for gcc.
    355 
    356 20160306:
    357 	NetBSD's regexp implementation is now part of libnbcompat.
    358 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    359 	non-NetBSD hosts if linked with stale object files produced
    360 	while they included a non-NetBSD regex.h.
    361 	In any case, you should "make cleandir" at least these tools
    362 	before updating your toolchain.
    363 
    364 20160125:
    365 	Dtrace has been enabled by default on some architectures.
    366 	When doing an update build, make sure to clean the etc/mtree
    367 	object directory before starting the build - otherwise the
    368 	needed directories in destdir will not be created.
    369 	An easy way to do this is:
    370 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    371 
    372 20150818:
    373 	New acpica requires "make cleandir" in src/external/bsd/acpica
    374 	again.
    375 
    376 20150413:
    377 	New acpica requires "make cleandir" and reinstalling yacc
    378 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    379 	also "make cleandir" in /usr/src/external/bsd/acpica.
    380 
    381 20150404:
    382 	Lint changes require a full rebuild of the tool, so make
    383 	sure to build without -u option to build.sh, or manually
    384 	do a make cleandir in src/tools/lint1 and
    385 	src/usr.bin/xlint.
    386 
    387 20150310:
    388 	Improvements to openssl for arm mean that update builds of
    389 	the openssl libraries will fail. A make cleandir in
    390 	external/bsd/openssl/lib is needed
    391 
    392 20141026:
    393 	A mishap during the import of pppd may cause your corruption
    394 	in your cvs directory if you happened to do a cvs update
    395 	during a short period of time. To fix, just remove the
    396 	directory src/external/bsd/ppp/dist/pppd completely
    397 	and let cvs restore it on next update.
    398 
    399 20140721:
    400 	The src/external/mit/lua/src directory was accidentally created
    401 	and then deleted in the CVS repository.  If you get errors like
    402 
    403 	cvs [update aborted]: cannot open directory
    404 	/cvsroot/src/external/mit/lua/src: No such file or directory
    405 
    406 	then delete your local copy of that directory tree and try again.
    407 
    408 20140530:
    409 	ARM eABI switched to DWARF based exception handling. This requires
    410 	rebuilding all C++ code. It is strongly advised to do a clean build.
    411 
    412 20140131:
    413 	The new compiler_rt/libc integration moved a few things. It is strongly
    414 	advised to do a clean build. At least lib/libc, the compat version(s)
    415 	of libc, libkern, rump and the kernels need to be cleaned.
    416 
    417 20131227:
    418 	1. The new ntpd runs in a restricted mode to prevent amplification
    419 	   attacks. If you need ntpdc to work you need to explicitly enable
    420 	   mode7 in your config file. Make sure you put the necessary restrict
    421 	   statements to avoid being exposed.
    422 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    423 	   to make clean in libc
    424 
    425 20131129:
    426 	The GMP sources were updated, and builds will likely fail without
    427 	cleaning their build trees for both tools and in-tree, like below.
    428 
    429 20131128:
    430 	The MPC and MPFR sources were updated, and builds may require their
    431 	tools and in-tree directories cleaned for successful updates.
    432 
    433 20130605:
    434 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    435 	to IPSEC (and the older IPSEC version removed).
    436 
    437 20130605:
    438 	Previous freetype installations erroneously installed private
    439 	header files. If you are building against a non-empty $DESTDIR,
    440 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    441 
    442 20130531:
    443 	The xdm update may cause build failure due to xdm.man being
    444 	in the obj tree.  Make sure to ensure any like this:
    445 		nbmake: nbmake: don't know how to make xdm.man. Stop
    446 	is fixed by deleting the xdm.man in the obj tree.
    447 
    448 20130530:
    449 	Updates of many xsrc packages will leave old .pc files around.
    450 	Best to clean out the xsrc objdir entirely before rebuilds.
    451 
    452 20130301:
    453 	The removal of netiso requires manual removal of /usr/include/netiso
    454 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    455 
    456 20120726:
    457 	The update of OpenSSL requires cleaning both the OpenSSL build
    458 	directory and DESTDIR.  *Even non-update builds require cleaning
    459 	DESTDIR.* Builds done without taking these steps may fail, or in
    460 	some cases may succeed and install broken OpenSSL libraries that
    461 	cause third-party software to link incorrectly and/or crash.
    462 
    463 20120507:
    464 	The database schema for makemandb was changed.  You will
    465 	need to update the database using 'makemandb -f' or wait
    466 	for the next weekly run to fix it.
    467 
    468 20120319:
    469 	sys/conf/Makefile.kern.inc has been modified to adjust the
    470 	size of db_symtab automatically.  You need to update dbsym in
    471 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    472 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    473 	mk.conf.
    474 
    475 20120216:
    476 	Default for MKCATPAGES changed to NO.  Update builds will fail
    477 	unless DESTDIR is cleaned manually.  If you built between 20120207
    478 	and 20120216, daily and weekly could have created an unreadable
    479 	/var/db/man.db index for apropos.  Running makemandb -f or
    480 	the next run of weekly will fix it.
    481 
    482 20111227:
    483 	If you built between 20111225 and 20111227 you need to remove
    484 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    485 	bump has been reverted.
    486 
    487 20111125:
    488 	The "rnd" pseudodevice has been added to sys/conf/std, which
    489 	means it should no longer be explicitly listed in kernel
    490 	configuration files.  The line "pseudo-device rnd" should be
    491 	removed from any custom kernel config files users may have.
    492 
    493 20111119:
    494 	A problem with the datastructures used by the rndctl(8)
    495 	utility (pointers in datastructures in an array, making 32->64
    496 	bit compatibility very painful) has been fixed in a
    497 	non-backwards-compatible way.  If you replace your kernel,
    498 	replace your rndctl executable too.
    499 
    500 20111001:
    501 	the prop_*_send_syscall() functions from proplib(3) have been
    502 	changed and their new version is not backward compatible with the old
    503 	one.  So ensure that all consumers of these functions (currently:
    504 	quota2 code and its tests) are updated together with the new lib.
    505 
    506 20110817:
    507 	sparc has been changed to use GCC 4.5.3, so any objdir or
    508 	DESTDIR for them should be deleted before updating.
    509 
    510 20110806:
    511 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    512 	objdir or DESTDIR for them should be deleted before updating.
    513 
    514 20110805:
    515 	The update to GCC 4.5.3 requires a non-trivial portion of
    516 	the tree to be cleaned.  Best to delete both objdir and
    517 	DESTDIR before running this update.  So far, only the
    518 	sparc64, mips and powerpc platforms have changed.
    519 
    520 20110803:
    521 	The layout of external/public-domain/xz has changed.  To do an
    522 	update build you will have to remove the contents of the OBJDIR
    523 	for external/public-domain/xz/bin by hand as the xz entry there
    524 	is now a directory.
    525 
    526 20110410:
    527 	The configuration of src/tools/gcc has changed.  To do an
    528 	update build you have to clean both tools/binutils and
    529 	tools/gcc by hand.
    530 
    531 20110328:
    532 	Building the Xorg binary was moved into a subdirectory to fix
    533 	ordering issues with "make all".  It may be necessary to remove
    534 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    535 	if your update build fails, as the "Xorg" entry there is now a
    536 	directory.
    537 
    538 20110121:
    539 	Assembler files no longer use -traditional-cpp.  This can break
    540 	the build of individual parts of the tree.  This is handled
    541 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    542 	and re-run config(1) for any kernel configurations as needed.
    543 
    544 20101217:
    545 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    546 	by default.  It may be necessary to manually update passwd(5) and
    547 	group(5) in order to make the program work with existing setups.
    548 
    549 20101125:
    550 	The latest changes to setenv(3) disallow setting environment
    551 	variables with names that contain '='.  Revision 1.18 of env.c
    552 	assumed that this was allowed.  Installing a new libc with an
    553 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    554 	break which affects the autoconf tests for dependency finding,
    555 	so building gcc will end up printing:
    556 	    checking dependency style of gcc... none
    557 	    configure: error: no usable dependency style found
    558 	Fix it by rebuilding and re-installing env.
    559 
    560 20101119:
    561 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    562 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    563 	have any build problems with xsrc, or problems with mismatched
    564 	versions between xorg-server and drivers.
    565 
    566 20100604:
    567 	The update of ATF to 0.9 causes old tests written in shell to fail
    568 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    569 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    570 	trees by hand.
    571 
    572 20100522:
    573 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    574 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    575 	build problems with xsrc.
    576 
    577 20100522:
    578 	private section of <ctype.h> was split, and now mklocale(1)
    579 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    580 
    581 20100520:
    582 	The location of the xkb compiled descriptions has changed.  Please
    583 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    584 
    585 20100222:
    586 	The shared objects file extension has been changed from .so to
    587 	.pico, in order to avoid conflicts with shared libraries names
    588 	libXX.so.  All now stale regular .so files can be removed from
    589 	your object directories.
    590 
    591 20100204:
    592 	The termcap database has been removed from the sources,
    593 	but has not been marked obsolete so it is not removed
    594 	from the system when upgrading.
    595 	As such, you will need to remove them from your object
    596 	and destination directories.
    597 
    598 20091101:
    599         After updating, it may be necessary to make the 'cleandir'
    600         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    601         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    602         src/tools/lex/ and src/usr.bin/lex/.
    603 
    604 20091001:
    605 	On amd64 you must rebuild tools (to get the new binutils)
    606 	before building a kernel, or the build fails on cpufunc.S.
    607 
    608 20091001:
    609 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    610 	symlink, failing the build.  Delete the link, and the subdir
    611 	it is in, and retry your build.
    612 
    613 20090718:
    614 	libc build changed so that strchr() provides the extra entry
    615 	point for index().  Update build of libc.a (and libc_pic.a)
    616 	may fail because the archive contains the unwanted index.o.
    617 	(Similarly for strrchr() and rindex().)
    618 
    619 20090709:
    620 	Native Xorg was upgraded again.  Builds will probably fail again
    621 	without a clean objdir, at least for src/external/mit/xorg.
    622 
    623 20090616:
    624 	Native Xorg was upgraded.  Builds will need a clean objdir for
    625 	src/external/mit/xorg.  Upgrading a system from sets will not
    626 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    627 	subdirectory has been changed into a file, and this needs to
    628 	be manually "rm -r"'ed before installing xbase.tgz.
    629 
    630 20090501:
    631 	Several new functions were added to string.h/libc, and this
    632 	can cause autoconf problems during the tool build for people
    633 	who fail to clean out their tools objects properly.  If you
    634 	note messages about stpcpy, stpncpy or strnlen accompanying a
    635 	failure during the tool build, clean out all your tools
    636 	objects and start again.
    637 
    638 20090325:
    639 	The i386 port was switched to i486 default toolchain.  This requires
    640 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    641 
    642 20090126:
    643 	The __posix_fadvise50 system call changed assembly stub type.  You
    644 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    645 	to avoid using the old assembly stub.
    646 
    647 20090202:
    648 	pkg_install now depends on the pkgdb cache for automatic conflict
    649 	detection.  It is recommended to rebuild the cache with
    650 	``pkg_admin rebuild''.
    651 
    652 20090110:
    653 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    654 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    655 	   This is needed even in the MODULAR kernel because there is
    656 	   conditionally compiled code in rtsock.c.
    657 	2. make sure build.sh completes and the binaries in a chroot work
    658 	   before installing.
    659 	3. If you don't use build.sh and you build directly to root, and
    660 	   your build breaks in the middle, don't despair.  Make sure headers
    661 	   are installed properly, and start building libraries first libc
    662 	   and libutil, install them and then continue building all the
    663 	   libraries in src/lib and src/gnu/lib and install them.  Once
    664 	   the new libraries are installed, you can restart the build.
    665 	4. If you compile packages and you notice link time warnings,
    666 	   rebuild the required packages to update their shared libraries.
    667 	   Any package you rebuild will require rebuilding all the packages
    668 	   that depend on it.
    669 	5. Next time you run pwd_mkdb with the new binary, the file
    670 	   will be upgraded and it will not be backwards compatible.
    671 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    672 	   lastlogx(5)) have been versioned, and there is a heuristic
    673 	   for utmp.  You are better off removing the old files after
    674 	   upgrading.  The automated clearing of /var/run during
    675 	   boot, and the automated rotating of files in /var/log by
    676 	   newsyslog(8), may mean that you do not have to remove the
    677 	   files manually.
    678 	7. The optional accounting file (/var/account/acct, see
    679 	   accton(8)) has not been versioned, and will need to be
    680 	   removed.  The automatic rotation of the accounting file by
    681 	   /etc/daily limits the bad consequences of failure to remove
    682 	   the file.
    683 	8. Application software that writes time_t to binary files on
    684 	   disk will break or need attention.  Most notably: if you are
    685 	   using PostgreSQL < 8.4, you need to dump your databases,
    686 	   rebuild PostgreSQL with the new time_t, then restore.
    687 
    688 20081219:
    689 	config(1) has been updated, and one of the files it creates -
    690 	swapnetbsd.o - has changed format.  You need to rebuild config
    691 	(done automatically by build.sh) and then you need to rerun
    692 	config on all kernel configuration files before rebuilding those
    693 	kernels.
    694 
    695 20081205:
    696 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    697 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    698 	set and will appear as extra files for MKX11=no update builds.
    699 
    700 20081122:
    701 	On i386, various kernel options(4) in GENERIC including
    702 	file systems have been disabled and moved into kernel modules.
    703 	Before trying a new GENERIC kernel, you have to prepare the
    704 	following files as well as a new GENERIC kernel:
    705 
    706 	- build and install kernel modules from src/sys/modules
    707 
    708 	- install the latest bootloader, which will load a module
    709 	  for the file system from which the kernel is loaded automatically
    710 
    711 	If you have to load your kernel from a file system which is not of
    712 	the same type as the root file system, you have to load the necessary
    713 	file system module manually on the boot prompt or in the boot.cfg file.
    714 
    715 20080827:
    716 	If you built and installed a libc from sources between
    717 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    718 	which results in false errors reported by lint(1).
    719 	Since this breaks the libc build itself, manual help is
    720 	needed -- lint must be disabled temporarily, e.g.:
    721 	  $ (cd lib/libc && make MKLINT=no dependall install)
    722 
    723 20080813:
    724 	MKDEBUG build was broken because the .depend files did not know
    725 	about .go files.  You need to remove all .depend files and rebuild.
    726 
    727 20080802:
    728 	A regression in binary compatibility for pthread_mutex_t has
    729 	been fixed.  Unfortunately, the price is breaking compatibility
    730 	for -current.
    731 
    732 	Threaded programs (using libpthread) and C++ programs (using
    733 	libstdc++) compiled after 20070907 and before 20080802 need to
    734 	be recompiled.
    735 
    736 	One way to find affected pkgsrc packages:
    737 
    738 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    739 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    740 
    741 20080731:
    742 	WAPBL (metadata journaling support) has been added, but at this
    743 	time isn't backwards compatible with pre-WAPBL aware kernels
    744 	and userland (fsck_ffs in particular).  Please make sure you
    745 	don't use a journaled filesystem with an older kernel/userland,
    746 	especially an uncleanly mounted journaled filesystem.  WAPBL
    747 	also requires the super block to be in the UFS2 format.  You
    748 	can use fsck_ffs -c 4 to update the superblock format.
    749 
    750 20080721:
    751 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    752 	isn't defined.
    753 
    754 20080531:
    755 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    756 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    757 	utility needs to be rebuilt and reinstalled as older binaries
    758 	won't work correctly.  The following sequence of commands:
    759 
    760 	  $ (cd sys/sys/ && nbmake-$arch includes)
    761 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    762 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    763 
    764 	leaves new drvctl utility in sbin/drvctl build directory.
    765 
    766 20080503:
    767 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    768 
    769 20080521:
    770 	For a while, unprivileged UPDATE builds would fail to
    771 	succeed at the checkflist stage, complaining that
    772 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    773 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    774 	If you already hit this problem, update the .mk file,
    775 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    776 
    777 20080303:
    778 	Linker warnings are now fatal if $WARNS>0.
    779 
    780 20080126:
    781 	The posix_fadvise system call has been changed from an assembly
    782 	stub, to a c file that calls an assembly stub.  You need to
    783 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    784 	avoid using the old assembly stub.
    785 
    786 20071209:
    787 	The acpiec(4) driver has been split into two attachments.  If you
    788 	get ACPI errors before the attachment, please update your kernel
    789 	configuration file appropriately or see GENERIC for more details.
    790 
    791 20071115:
    792 	The it(4) driver has been renamed to itesio(4) and the old port
    793 	argument specified in the kernel configuration file is not valid
    794 	anymore.  The itesio(4) driver now uses the Super I/O address port
    795 	rather than the EC address port.  Please update your kernel
    796 	configuration file appropriately or see GENERIC for more details.
    797 
    798 20071028:
    799 	The pccons(4) driver has been removed from the NetBSD/shark port.
    800 	You need to update any custom kernel configuration file you have
    801 	to remove any references to pccons (which includes removing the
    802 	now useless XSERVER option) and replace them with the correct
    803 	entries for the wscons driver.  See the GENERIC configuration file
    804 	for more details.
    805 
    806 20070913:
    807 	A latent bug in dhclient/dhcpd that caused it to be unable to
    808 	enumerate interfaces was fixed.  The bug began to cause
    809 	problems after 20070911 when the kernel's SIOCGIFCONF
    810 	implementation was repaired.  From 20070529 to 20070911 racoon
    811 	could not enumerate interfaces.  (These are noted because
    812 	normal kernel/userspace version matching hygiene is not
    813 	sufficient to avoid this problem.)  Ensure that both kernel
    814 	and userland are from after 20070913.
    815 
    816 20070703:
    817 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    818 	calls the target-specific strip program, and the logic to pass
    819 	down STRIP from make has been removed.  This requires a
    820 	re-installation of tools.
    821 
    822 20070422:
    823 	The way OS emulations lookup filenames inside the emulation root
    824 	has been changed.  Rather than modify the pathname (and copy back
    825 	to userspace) namei() and lookup() directly check the emulation
    826 	root.  One side effect is that absolute symlinks inside the emulated
    827 	root file system will be relative to that file system - unless they
    828 	start /../ this is useful when the emulated root is a real install
    829 	that has such links.
    830 	This might affect symlinks that have been added to reference outside
    831 	the emulated root.
    832 
    833 20070412:
    834 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    835 	instead.  See the GENERIC32_IP3x kernel configuration for an
    836 	example.
    837 
    838 20070319:
    839         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    840         on many platforms due to incorrect flags settings.  If you
    841         updated and built after about 20070315, do "nbmake-$arch
    842 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    843 	rebuild of object files that might have been built
    844 	incorrectly, and ensure that you have at least
    845 	src/lib/libc/Makefile 1.130.
    846 
    847 20070210:
    848         src/sys/sys/{sa.h,savar.h} were removed.
    849           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    850               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    851         will allow dependencies on those files to get get rebuilt
    852 
    853 20070209:
    854         The threading model was changed when the newlock2 branch
    855         was merged to NetBSD-current.  If you boot with a new
    856         kernel (version 4.99.10), then you also need a new pthread
    857         library (/usr/lib/libpthread.so.0.7).  If you boot with
    858         an old kernel, then you need the old pthread library
    859         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    860         the pthread library in sync, old threaded applications should
    861         continue to work with an old or new kernel.  Note that named(8)
    862 	is the only threaded application in the base system.
    863 
    864 20061214:
    865 	Following the move of string_to_flags() and flags_to_string()
    866 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    867 	will need to do a "make cleandir" in
    868 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    869 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    870 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    871 		as the installation images in distrib/
    872 	in order to excise stale references to the old stat_flags.h header
    873 	file in the ls sources -- stat_flags.h has been removed.
    874 
    875 20061108:
    876 	The configure script used in the src/tools/gcc compiler has been
    877 	changed to indicate that our libc has ssp support built-in and
    878 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    879 	make clean in src/tools/gcc first to rebuild the compiler.
    880 
    881 20061009:
    882 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    883 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    884 
    885 20060814:
    886 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    887 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    888 	kernel configuration for an example.  X servers from the last
    889 	few years should cope.
    890 
    891 20060703:
    892 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    893 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    894 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    895 
    896 20060627:
    897 	socket(2) has changed, and its system call has been versioned.
    898 	For userlands with the old version of socket(2), make sure that
    899 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    900 	errors will result.
    901 
    902 Hints for a more successful build:
    903 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    904     Use build.sh, but do not use its "expert mode":
    905 	This will automatically build the tools in the
    906 	   correct order, and it will keep the tools and the
    907 	   new build products from interfering with the running
    908 	   system.  This will allow you to ignore most of the
    909 	   other advice in this file.
    910     Build a new kernel first:
    911 	This makes sure that any new system calls or features
    912 	   expected by the new userland will be present.  This
    913 	   helps to avoid critical errors when upgrading.
    914     Use object directories:
    915 	This helps to keep stale object
    916 	   files from polluting the build if a Makefile "forgets"
    917 	   about one.  It also makes it easier to clean up after
    918 	   a build.  It's also necessary if you want to use the
    919 	   same source tree for multiple machines.
    920 	   To use object directories with build.sh:
    921 	    a) invoke build.sh with the "-M" or "-O" options.
    922 	   To use object directories without using build.sh:
    923 	    a) cd /usr/src ; make cleandir
    924 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    925 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    926 	    d) cd /usr/src ; make build
    927 	   Note that running "make obj" in a directory will create
    928 	   in obj.$MACHINE directory.
    929     Build to a DESTDIR:
    930 	This helps to keep old installed files (especially libraries)
    931 	   from interfering with the new build.
    932 	   To build to a DESTDIR with build.sh, use the "-D" option.
    933 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    934 	   environment variable before running make build.  It should be
    935 	   set to the pathname of an initially empty directory.
    936 	   Problems: if you do not use build.sh, you might need to
    937 		update critical utilities without using DESTDIR since
    938 		nothing is executed from what is installed in DESTDIR.
    939 		(See critical utils, below.)
    940     Build often:
    941 	This keeps critical utilities current enough to not choke
    942 	on any other part of the source tree that depends on up to
    943 	date functionality.  If you use build.sh, you should not have
    944 	this problem.
    945 
    946 What to do if things don't work:
    947 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    948 When things don't work there are usually a few things that commonly
    949 should be done.
    950     1)	make includes
    951 	This should be done automatically by make build.
    952     2)  cd share/mk && make install
    953 	Again, automatically done by make build.
    954 
    955 Failsafe rebuild of a small part of the tree:
    956 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    957 To make sure you rebuild something correctly you want to do
    958 something like the following:
    959     1)  Make sure the includes and .mk files are up to date.
    960     2)  Make sure any program used to build the particular
    961 	utility is up to date.  (yacc, lex, etc...)
    962     3)  cd ...path/to/util...
    963 	make cleandir
    964 	rm ...all obj directories...
    965 	make cleandir			# yes, again
    966 	make obj
    967 	make depend && make
    968 
    969 Failsafe rebuild of the entire tree:
    970 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    971 If you really want to make sure the source tree is clean and
    972 ready for a build try the following.  Note that sourcing /etc/mk.conf
    973 (a make(1) Makefile) in this manner is not right, and will not work
    974 for anyone who uses any make(1) features in /etc/mk.conf.
    975 
    976 ---cut here---
    977 #!/bin/sh
    978 . /etc/mk.conf
    979 
    980 if [ -z $NETBSDSRCDIR ] ; then
    981     NETBSDSRCDIR=/usr/src
    982 fi
    983 if [ \! -d $NETBSDSRCDIR ] ; then
    984     echo Unable to find sources
    985     exit 1
    986 fi
    987 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    988 
    989 if [ -z $BSDOBJDIR ] ; then
    990     BSDOBJDIR=/usr/obj
    991 fi
    992 if [ -d $BSDOBJDIR ] ; then
    993     rm -rf $BSDOBJDIR
    994 fi
    995 
    996 cd $NETBSDSRCDIR && make cleandir
    997 
    998 ---cut here---
    999 
   1000 Critical utilities:
   1001 ^^^^^^^^^^^^^^^^^^^
   1002 	usr.bin/compile_et
   1003 	usr.bin/make
   1004 	usr.bin/yacc
   1005 	usr.bin/lex
   1006 	usr.bin/xlint
   1007 	usr.bin/config
   1008 
   1009 Other problems and possible solutions:
   1010 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   1011 Symptom:Complaints involving a Makefile.
   1012 Fix:	Rebuild usr.bin/make:
   1013 	cd usr.bin/make && make && make install
   1014 	Or, a failsafe method if that doesn't work:
   1015 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
   1016 
   1017 Fix:	Make sure .mk files are up to date.
   1018 	cd share/mk && make install
   1019 
   1020 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
   1021 Fix:	Rebuild usr.bin/config
   1022 
   1023 Symptom:
   1024 Fix:	Rebuild usr.bin/yacc
   1025 
   1026 Symptom:
   1027 Fix:	Rebuild usr.bin/lex
   1028 
   1029 Symptom:
   1030 Fix:	rm /usr/lib/libbfd.a
   1031 
   1032 Symptom:Obsolete intermediate files are used during compilation
   1033 Fix:	Try the following sequence of commands in the directory in question.
   1034 	make cleandir; rm `make print-objdir`; make cleandir; make obj
   1035 	(If you built the tree without "make obj" in the past, obsolete files
   1036 	may remain.  The command tries to clean everything up)
   1037 
   1038 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
   1039 	pointer type
   1040 Fix:	Rebuild and install usr.bin/menuc
   1041 
   1042 Symptom:mklocale not found during build in share/locale/ctype
   1043 Fix:	Build and install usr.bin/mklocale
   1044 
   1045 Symptom:undefined reference to `__assert13' or `__unsetenv13'
   1046 Fix:    Rebuild and install lib/libc
   1047 
   1048 Symptom:usr.bin/config fails to build.
   1049 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
   1050 
   1051 Symptom:undefined reference to `getprogname' or `setprogname'
   1052 Fix:    Rebuild and install lib/libc
   1053 
   1054 Symptom:lint does not understand the '-X' option
   1055 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
   1056 
   1057 Symptom:Update build fails in src/tools/gcc complaining that a variable
   1058 	(e.g. CPPFLAGS) has changed since the previous run.
   1059 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
   1060 
   1061 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
   1062 	No such file or directory.
   1063 Cause:	If a directory is created by mistake, then it is sometimes
   1064 	deleted from the CVS repository using administrative commands
   1065 	that bypass the normal cvs access controls.  If your cvs working tree
   1066 	contains references to a directory that has been deleted on the
   1067 	server in this way, then "cvs update" reports this error.
   1068 Fix:	Recursively delete the affected directory from your working tree
   1069 	and try the update again.
   1070