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UPDATING revision 1.311
      1 $NetBSD: UPDATING,v 1.311 2020/08/12 06:48:50 mrg 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 20200811:
     23 	GCC updates may require cleaning the objdir.
     24 
     25 20200614:
     26 	blacklist* has been renamed to blocklist*. postinstall(8)
     27 	should handle the migration
     28 
     29 20200601:
     30 	Due to a mistake in LIBISPRIVATE handling, .so libraries were
     31 	created in the build directories and need cleaning.
     32 
     33 20200311:
     34 	GCC 8 ports will need cleaning in src/tools/gcc and
     35 	src/external/gpl3/gcc due to GCC 8.4 update.
     36 
     37 20191118:
     38 	More architectures were switched to gcc8:
     39 	    i386, ia64 powerpc64, sparc, sparc64, arm
     40 	The same comments as in 20191022 apply.
     41 
     42 20191112:
     43 	The LLVM update requires a clean rebuild for all architectures using
     44 	LLVM during the tools build phase (i386, amd64, aarch64).
     45 
     46 20191022:
     47 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
     48 	In-place ("expert mode", build.sh -E) builds are not supported
     49 	when going from a GCC 7 userland to GCC 8. Do a regular
     50 	build to a different DESTDIR (or preferably: build.sh -U) at least
     51 	once and install sets, or download comp.{tar.xz,tgz} from the
     52 	daily builds and install that before doing the next in-place build.
     53 
     54 20191001:
     55 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
     56 	old builds with GCC 7 output now uses GCC 8.  Clean this
     57 	directory, and also clean src/external/gpl3/gcc.
     58 
     59 20190903:
     60 	Files with names that coincide with existing files' names on
     61 	case-insensitive file systems were inadvertently committed, for
     62 	radeon GPU firmware.  We cannot mark these as obsolete for
     63 	postinstall to fix, so if you updated src since 2019-08-26, and
     64 	ran build.sh distribution or ran build.sh release, you must
     65 	manually delete the following files in your DESTDIR (which is
     66 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
     67 	them:
     68 
     69 		/libdata/firmware/radeon/bonaire_ce.bin
     70 		/libdata/firmware/radeon/bonaire_mc.bin
     71 		/libdata/firmware/radeon/bonaire_me.bin
     72 		/libdata/firmware/radeon/bonaire_mec.bin
     73 		/libdata/firmware/radeon/bonaire_pfp.bin
     74 		/libdata/firmware/radeon/bonaire_rlc.bin
     75 		/libdata/firmware/radeon/bonaire_sdma.bin
     76 		/libdata/firmware/radeon/bonaire_smc.bin
     77 		/libdata/firmware/radeon/bonaire_uvd.bin
     78 		/libdata/firmware/radeon/hainan_ce.bin
     79 		/libdata/firmware/radeon/hainan_mc.bin
     80 		/libdata/firmware/radeon/hainan_me.bin
     81 		/libdata/firmware/radeon/hainan_pfp.bin
     82 		/libdata/firmware/radeon/hainan_rlc.bin
     83 		/libdata/firmware/radeon/hainan_smc.bin
     84 		/libdata/firmware/radeon/hawaii_ce.bin
     85 		/libdata/firmware/radeon/hawaii_mc.bin
     86 		/libdata/firmware/radeon/hawaii_me.bin
     87 		/libdata/firmware/radeon/hawaii_mec.bin
     88 		/libdata/firmware/radeon/hawaii_pfp.bin
     89 		/libdata/firmware/radeon/hawaii_rlc.bin
     90 		/libdata/firmware/radeon/hawaii_sdma.bin
     91 		/libdata/firmware/radeon/hawaii_smc.bin
     92 		/libdata/firmware/radeon/kabini_ce.bin
     93 		/libdata/firmware/radeon/kabini_me.bin
     94 		/libdata/firmware/radeon/kabini_mec.bin
     95 		/libdata/firmware/radeon/kabini_pfp.bin
     96 		/libdata/firmware/radeon/kabini_rlc.bin
     97 		/libdata/firmware/radeon/kabini_sdma.bin
     98 		/libdata/firmware/radeon/kaveri_ce.bin
     99 		/libdata/firmware/radeon/kaveri_me.bin
    100 		/libdata/firmware/radeon/kaveri_mec.bin
    101 		/libdata/firmware/radeon/kaveri_mec2.bin
    102 		/libdata/firmware/radeon/kaveri_pfp.bin
    103 		/libdata/firmware/radeon/kaveri_rlc.bin
    104 		/libdata/firmware/radeon/kaveri_sdma.bin
    105 		/libdata/firmware/radeon/mullins_ce.bin
    106 		/libdata/firmware/radeon/mullins_me.bin
    107 		/libdata/firmware/radeon/mullins_mec.bin
    108 		/libdata/firmware/radeon/mullins_pfp.bin
    109 		/libdata/firmware/radeon/mullins_rlc.bin
    110 		/libdata/firmware/radeon/mullins_sdma.bin
    111 		/libdata/firmware/radeon/oland_ce.bin
    112 		/libdata/firmware/radeon/oland_mc.bin
    113 		/libdata/firmware/radeon/oland_me.bin
    114 		/libdata/firmware/radeon/oland_pfp.bin
    115 		/libdata/firmware/radeon/oland_rlc.bin
    116 		/libdata/firmware/radeon/oland_smc.bin
    117 		/libdata/firmware/radeon/pitcairn_ce.bin
    118 		/libdata/firmware/radeon/pitcairn_mc.bin
    119 		/libdata/firmware/radeon/pitcairn_me.bin
    120 		/libdata/firmware/radeon/pitcairn_pfp.bin
    121 		/libdata/firmware/radeon/pitcairn_rlc.bin
    122 		/libdata/firmware/radeon/pitcairn_smc.bin
    123 		/libdata/firmware/radeon/tahiti_ce.bin
    124 		/libdata/firmware/radeon/tahiti_mc.bin
    125 		/libdata/firmware/radeon/tahiti_me.bin
    126 		/libdata/firmware/radeon/tahiti_pfp.bin
    127 		/libdata/firmware/radeon/tahiti_rlc.bin
    128 		/libdata/firmware/radeon/tahiti_smc.bin
    129 		/libdata/firmware/radeon/verde_ce.bin
    130 		/libdata/firmware/radeon/verde_mc.bin
    131 		/libdata/firmware/radeon/verde_me.bin
    132 		/libdata/firmware/radeon/verde_pfp.bin
    133 		/libdata/firmware/radeon/verde_rlc.bin
    134 		/libdata/firmware/radeon/verde_smc.bin
    135 
    136 	We will re-import these radeon firmware images another way
    137 	later.
    138 
    139 20190727:
    140 	The uefi bootloader has gained tftp support and needs a clean
    141 	build. If you do update builds, manually clean its object
    142 	directory by something like:
    143 	cd sys/arch/i386/stand/efiboot && make clean
    144 
    145 20190723:
    146 	The jemalloc allocator in libc is now build without extended
    147 	debugging (for performance reasons). In update builds make sure
    148 	to rebuild it completly, by removing all affected object files,
    149 	including compat builds, something like:
    150 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    151 
    152 20190207:
    153 	GCC 7 switched for many ports.  Update builds are likely to fail.
    154 
    155 20180924:
    156 	A newer OpenSSL version has been imported. If you are doing
    157 	update builds, make sure to remove all old obj dirs, like:
    158 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    159 
    160 20180717:
    161 	On aarch64 int64_t and related types have changed from long long
    162 	to long. This requires recompiling all C++ binaries.
    163 
    164 20180713:
    165 	On amd64 and i386 static binaries are now build position
    166 	independend. This requires recompilation of all object
    167 	files used to create the crunched /rescue binary.
    168 	Clean the rescue directory in your obj directory before
    169 	doing an update build, otherwise linking will fail.
    170 
    171 20180414:
    172 	Existing binutils was migrated to binutils.old.  Manual
    173 	removal of tools/binutils objects directory may be required
    174 	to fix tools build failure.
    175 
    176 20180311:
    177 	bdftopcf was updated and may need cleaning in the
    178 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    179 	link errors.
    180 
    181 20180212:
    182 	between OpenSSL and GCC updates, many things may fail to build.
    183 	any failure that looks like GCC or openssl is best handled by
    184 	a clean destdir and objdir.  Full cleandir and destdir deletion
    185 	is recommended if build failures occur.
    186 
    187 20171225:
    188 	removal of the vadvise syscall requires manual removal of all
    189 	associated files from the libc build object directory (including
    190 	the .depend files) - a command like:
    191 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    192 	For architectures that support multiple "compat" binary targets,
    193 	you'll need to cleanup both the regular libc directory and the
    194 	compat ones (the above command will do that).
    195 
    196 20171010:
    197 	a change to the build structure of external/bsd/acpica/bin/iasl
    198 	means that its objdir (or *.d and .depend at least) might need
    199 	to be manually removed - or a build done once without -u.
    200 
    201 20170822:
    202 	a new version of GMP has been imported and probably
    203 	will break parts of builds related to themselves or GCC, both
    204 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    205 	and MPC objdirs or build once without -u.
    206 
    207 20170816:
    208 	a new version of MPFR and MPC have been imported and probably
    209 	will break parts of builds related to themselves or GCC, both
    210 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    211 	and MPC objdirs or build once without -u.
    212 
    213 20170402:
    214 	a new version of dhcpcd has been imported, which does not support
    215 	update builds from the previous version. Remove your
    216 	external/bsd/dhcpcd object dir or build once without -u.
    217 
    218 20170211:
    219 	a new terminfo database has been imported.
    220 	The structure of it has changed slightly from prior versions and
    221 	an updated tic tool is required.
    222 	If you build.sh, don't use -u
    223 
    224 20170207:
    225 	various arch dependent libc/exect.S files were removed
    226 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    227 	if it exists) or do a clean build.
    228 	(This is a bug in the make system, it should be corrected without
    229 	human intervention, but isn't.)
    230 
    231 20170104:
    232 	xinput build options have changed.
    233 	Remove the obj directory (external/mit/xorg/bin/xinput)
    234 	if you build.sh -u
    235 
    236 20170103:
    237 	a new version of flex has been imported.
    238 	Remove the file from obj (external/bsd/flex)
    239 	if you build.sh -u
    240 
    241 20161014:
    242 	a new version of OpenSSL has been imported.
    243 	Remove the files from obj (crypto/external/bsd/openssl) 
    244 	if you build.sh -u
    245 
    246 20161009:
    247 	a new version of dhcpcd has been imported with slightly changed
    248 	build infrastructure. When doing a build.sh -u this requires
    249 	pruning the external/bsd/dhcpcd objdir.
    250 
    251 20160914:
    252 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    253 	ports in using xorg-server 1.18. This requires a clean destdir
    254 	and a clean objdir.
    255 
    256 20160527:
    257 	i386 needs a full cleandir or objdir deletion because PIE has
    258 	been enabled. (see the amd64 entry two down for further info)
    259 
    260 20160418:
    261 	libedit needs manual removal of all autogenerated files since
    262 	some of them are not autogenerated anymore. Remember that there
    263 	might be two copies of libedit if your platform builds "compat".
    264 
    265 20160410:
    266 	amd64 needs full "make cleandir" or deletion of objdir now that
    267 	PIE has been enabled for amd64.  PIE, or position-independent
    268 	executables, means all code, including executables and not just
    269 	shared libraries, is position-independent and hence able to be
    270 	relocated by ASLR, address space layout randomization.
    271 
    272 	The change was made in Makefile variables for compiler and
    273 	linker flags, for which make(1) does not record dependencies,
    274 	hence it is unable to detect that all .o files need rebuilding.
    275 
    276 	Partial rebuilds with some modified source files will likely
    277 	fail when linking executables, since the linker refuses to mix
    278 	position-independent code with position-dependent code in
    279 	position-independent executables:
    280 
    281 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    282 
    283 20160401:
    284 	Ports switching to GCC 5.3 will need a full "make cleandir".
    285 	Some people have found that cleandir is not sufficient, so if
    286 	in doubt delete the entire object directory tree for gcc.
    287 
    288 20160306:
    289 	NetBSD's regexp implementation is now part of libnbcompat.
    290 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    291 	non-NetBSD hosts if linked with stale object files produced
    292 	while they included a non-NetBSD regex.h.
    293 	In any case, you should "make cleandir" at least these tools
    294 	before updating your toolchain.
    295 
    296 20160125:
    297 	Dtrace has been enabled by default on some architectures.
    298 	When doing an update build, make sure to clean the etc/mtree
    299 	object directory before starting the build - otherwise the
    300 	needed directories in destdir will not be created.
    301 	An easy way to do this is:
    302 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    303 
    304 20150818:
    305 	New acpica requires "make cleandir" in src/external/bsd/acpica
    306 	again.
    307 
    308 20150413:
    309 	New acpica requires "make cleandir" and reinstalling yacc
    310 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    311 	also "make cleandir" in /usr/src/external/bsd/acpica.
    312 
    313 20150404:
    314 	Lint changes require a full rebuild of the tool, so make
    315 	sure to build without -u option to build.sh, or manually
    316 	do a make cleandir in src/tools/lint1 and
    317 	src/usr.bin/xlint.
    318 
    319 20150310:
    320 	Improvements to openssl for arm mean that update builds of
    321 	the openssl libraries will fail. A make cleandir in
    322 	external/bsd/openssl/lib is needed
    323 
    324 20141026:
    325 	A mishap during the import of pppd may cause your corruption
    326 	in your cvs directory if you happened to do a cvs update
    327 	during a short period of time. To fix, just remove the
    328 	directory src/external/bsd/ppp/dist/pppd completely
    329 	and let cvs restore it on next update.
    330 
    331 20140721:
    332 	The src/external/mit/lua/src directory was accidentally created
    333 	and then deleted in the CVS repository.  If you get errors like
    334 
    335 	cvs [update aborted]: cannot open directory
    336 	/cvsroot/src/external/mit/lua/src: No such file or directory
    337 
    338 	then delete your local copy of that directory tree and try again.
    339 
    340 20140530:
    341 	ARM eABI switched to DWARF based exception handling. This requires
    342 	rebuilding all C++ code. It is strongly advised to do a clean build.
    343 
    344 20140131:
    345 	The new compiler_rt/libc integration moved a few things. It is strongly
    346 	advised to do a clean build. At least lib/libc, the compat version(s)
    347 	of libc, libkern, rump and the kernels need to be cleaned.
    348 
    349 20131227:
    350 	1. The new ntpd runs in a restricted mode to prevent amplification
    351 	   attacks. If you need ntpdc to work you need to explicitly enable
    352 	   mode7 in your config file. Make sure you put the necessary restrict
    353 	   statements to avoid being exposed.
    354 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    355 	   to make clean in libc
    356 
    357 20131129:
    358 	The GMP sources were updated, and builds will likely fail without
    359 	cleaning their build trees for both tools and in-tree, like below.
    360 
    361 20131128:
    362 	The MPC and MPFR sources were updated, and builds may require their
    363 	tools and in-tree directories cleaned for successful updates.
    364 
    365 20130605:
    366 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    367 	to IPSEC (and the older IPSEC version removed).
    368 
    369 20130605:
    370 	Previous freetype installations eroneously installed private
    371 	header files. If you are building against a non-empty $DESTDIR,
    372 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    373 
    374 20130531:
    375 	The xdm update may cause build failure due to xdm.man being
    376 	in the obj tree.  Make sure to ensure any like this:
    377 		nbmake: nbmake: don't know how to make xdm.man. Stop
    378 	is fixed by deleting the xdm.man in the obj tree.
    379 
    380 20130530:
    381 	Updates of many xsrc packages will leave old .pc files around.
    382 	Best to clean out the xsrc objdir entirely before rebuilds.
    383 
    384 20130301:
    385 	The removal of netiso requires manual removal of /usr/include/netiso
    386 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    387 
    388 20120726:
    389 	The update of OpenSSL requires cleaning both the OpenSSL build
    390 	directory and DESTDIR.  *Even non-update builds require cleaning
    391 	DESTDIR.* Builds done without taking these steps may fail, or in
    392 	some cases may succeed and install broken OpenSSL libraries that
    393 	cause third-party software to link incorrectly and/or crash.
    394 
    395 20120507:
    396 	The database schema for makemandb was changed.  You will
    397 	need to update the database using 'makemandb -f' or wait
    398 	for the next weekly run to fix it.
    399 
    400 20120319:
    401 	sys/conf/Makefile.kern.inc has been modified to adjust the
    402 	size of db_symtab automatically.  You need to update dbsym in
    403 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    404 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    405 	mk.conf.
    406 
    407 20120216:
    408 	Default for MKCATPAGES changed to NO.  Update builds will fail
    409 	unless DESTDIR is cleaned manually.  If you built between 20120207
    410 	and 20120216, daily and weekly could have created an unreadable
    411 	/var/db/man.db index for apropos.  Running makemandb -f or
    412 	the next run of weekly will fix it.
    413 
    414 20111227:
    415 	If you built between 20111225 and 20111227 you need to remove
    416 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    417 	bump has been reverted.
    418 
    419 20111125:
    420 	The "rnd" pseudodevice has been added to sys/conf/std, which
    421 	means it should no longer be explicitly listed in kernel
    422 	configuration files.  The line "pseudo-device rnd" should be
    423 	removed from any custom kernel config files users may have.
    424 
    425 20111119:
    426 	A problem with the datastructures used by the rndctl(8)
    427 	utility (pointers in datastructures in an array, making 32->64
    428 	bit compatibility very painful) has been fixed in a
    429 	non-backwards-compatible way.  If you replace your kernel,
    430 	replace your rndctl executable too.
    431 
    432 20111001:
    433 	the prop_*_send_syscall() functions from proplib(3) have been
    434 	changed and their new version is not backward compatible with the old
    435 	one.  So ensure that all consumers of these functions (currently:
    436 	quota2 code and its tests) are updated together with the new lib.
    437 
    438 20110817:
    439 	sparc has been changed to use GCC 4.5.3, so any objdir or
    440 	DESTDIR for them should be deleted before updating.
    441 
    442 20110806:
    443 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    444 	objdir or DESTDIR for them should be deleted before updating.
    445 
    446 20110805:
    447 	The update to GCC 4.5.3 requires a non-trivial portion of
    448 	the tree to be cleaned.  Best to delete both objdir and
    449 	DESTDIR before running this update.  So far, only the
    450 	sparc64, mips and powerpc platforms have changed.
    451 
    452 20110803:
    453 	The layout of external/public-domain/xz has changed.  To do an
    454 	update build you will have to remove the contents of the OBJDIR
    455 	for external/public-domain/xz/bin by hand as the xz entry there
    456 	is now a directory.
    457 
    458 20110410:
    459 	The configuration of src/tools/gcc has changed.  To do an
    460 	update build you have to clean both tools/binutils and
    461 	tools/gcc by hand.
    462 
    463 20110328:
    464 	Building the Xorg binary was moved into a subdirectory to fix
    465 	ordering issues with "make all".  It may be necessary to remove
    466 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    467 	if your update build fails, as the "Xorg" entry there is now a
    468 	directory.
    469 
    470 20110121:
    471 	Assembler files no longer use -traditional-cpp.  This can break
    472 	the build of individual parts of the tree.  This is handled
    473 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    474 	and re-run config(1) for any kernel configurations as needed.
    475 
    476 20101217:
    477 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    478 	by default.  It may be necessary to manually update passwd(5) and
    479 	group(5) in order to make the program work with existing setups.
    480 
    481 20101125:
    482 	The latest changes to setenv(3) dissallow setting environment
    483 	variables with names that contain '='.  Revision 1.18 of env.c
    484 	assumed that this was allowed.  Installing a new libc with an
    485 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    486 	break which affects the autoconf tests for dependency finding,
    487 	so building gcc will end up printing:
    488 	    checking dependency style of gcc... none
    489 	    configure: error: no usable dependency style found
    490 	Fix it by rebuilding and re-installing env.
    491 
    492 20101119:
    493 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    494 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    495 	have any build problems with xsrc, or problems with mismatched
    496 	versions between xorg-server and drivers.
    497 
    498 20100604:
    499 	The update of ATF to 0.9 causes old tests written in shell to fail
    500 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    501 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    502 	trees by hand.
    503 
    504 20100522:
    505 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    506 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    507 	build problems with xsrc.
    508 
    509 20100522:
    510 	private section of <ctype.h> was splitted, and now mklocale(1)
    511 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    512 
    513 20100520:
    514 	The location of the xkb compiled descriptions has changed.  Please
    515 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    516 
    517 20100222:
    518 	The shared objects file extension has been changed from .so to
    519 	.pico, in order to avoid conflicts with shared libraries names
    520 	libXX.so.  All now stale regular .so files can be removed from
    521 	your object directories.
    522 
    523 20100204:
    524 	The termcap database has been removed from the sources,
    525 	but has not been marked obsolete so it is not removed
    526 	from the system when upgrading.
    527 	As such, you will need to remove them from your object
    528 	and destination directories.
    529 
    530 20091101:
    531         After updating, it may be necessary to make the 'cleandir'
    532         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    533         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    534         src/tools/lex/ and src/usr.bin/lex/.
    535 
    536 20091001:
    537 	On amd64 you must rebuild tools (to get the new binutils)
    538 	before building a kernel, or the build fails on cpufunc.S.
    539 
    540 20091001:
    541 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    542 	symlink, failing the build.  Delete the link, and the subdir
    543 	it is in, and retry your build.
    544 
    545 20090718:
    546 	libc build changed so that strchr() provides the extra entry
    547 	point for index().  Update build of libc.a (and libc_pic.a)
    548 	may fail because the archive contains the unwanted index.o.
    549 	(Similarly for strrchr() and rindex().)
    550 
    551 20090709:
    552 	Native Xorg was upgraded again.  Builds will probably fail again
    553 	without a clean objdir, at least for src/external/mit/xorg.
    554 
    555 20090616:
    556 	Native Xorg was upgraded.  Builds will need a clean objdir for
    557 	src/external/mit/xorg.  Upgrading a system from sets will not
    558 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    559 	subdirectory has been changed into a file, and this needs to
    560 	be manually "rm -r"'ed before installing xbase.tgz.
    561 
    562 20090501:
    563 	Several new functions were added to string.h/libc, and this
    564 	can cause autoconf problems during the tool build for people
    565 	who fail to clean out their tools objects properly.  If you
    566 	note messages about stpcpy, stpncpy or strnlen accompanying a
    567 	failure during the tool build, clean out all your tools
    568 	objects and start again.
    569 
    570 20090325:
    571 	The i386 port was switched to i486 default toolchain.  This requires
    572 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    573 
    574 20090126:
    575 	The __posix_fadvise50 system call changed assembly stub type.  You
    576 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    577 	to avoid using the old assembly stub.
    578 
    579 20090202:
    580 	pkg_install now depends on the pkgdb cache for automatic conflict
    581 	detection.  It is recommented to rebuild the cache with
    582 	``pkg_admin rebuild''.
    583 
    584 20090110:
    585 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    586 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    587 	   This is needed even in the MODULAR kernel because there is
    588 	   conditionally compiled code in rtsock.c.
    589 	2. make sure build.sh completes and the binaries in a chroot work
    590 	   before installing.
    591 	3. If you don't use build.sh and you build directly to root, and
    592 	   your build breaks in the middle, don't despair.  Make sure headers
    593 	   are installed properly, and start building libraries first libc
    594 	   and libutil, install them and then continue building all the
    595 	   libraries in src/lib and src/gnu/lib and install them.  Once
    596 	   the new libraries are installed, you can restart the build.
    597 	4. If you compile packages and you notice link time warnings,
    598 	   rebuild the required packages to update their shared libraries.
    599 	   Any package you rebuild will require rebuilding all the packages
    600 	   that depend on it.
    601 	5. Next time you run pwd_mkdb with the new binary, the file
    602 	   will be upgraded and it will not be backwards compatible.
    603 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    604 	   lastlogx(5)) have been versioned, and there is a heuristic
    605 	   for utmp.  You are better off removing the old files after
    606 	   upgrading.  The automated clearing of /var/run during
    607 	   boot, and the automated rotating of files in /var/log by
    608 	   newsyslog(8), may mean that you do not have to remove the
    609 	   files manually.
    610 	7. The optional accounting file (/var/account/acct, see
    611 	   accton(8)) has not been versioned, and will need to be
    612 	   removed.  The automatic rotation of the accounting file by
    613 	   /etc/daily limits the bad consequences of failure to remove
    614 	   the file.
    615 	8. Application software that writes time_t to binary files on
    616 	   disk will break or need attention.  Most notably: if you are
    617 	   using PostgreSQL < 8.4, you need to dump your databases,
    618 	   rebuild PostgreSQL with the new time_t, then restore.
    619 
    620 20081219:
    621 	config(1) has been updated, and one of the files it creates -
    622 	swapnetbsd.o - has changed format.  You need to rebuild config
    623 	(done automatically by build.sh) and then you need to rerun
    624 	config on all kernel configuration files before rebuilding those
    625 	kernels.
    626 
    627 20081205:
    628 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    629 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    630 	set and will appear as extra files for MKX11=no update builds.
    631 
    632 20081122:
    633 	On i386, various kernel options(4) in GENERIC including
    634 	file systems have been disabled and moved into kernel modules.
    635 	Before trying a new GENERIC kernel, you have to prepare the
    636 	following files as well as a new GENERIC kernel:
    637 
    638 	- build and install kernel modules from src/sys/modules
    639 
    640 	- install the latest bootloader, which will load a module
    641 	  for the file system from which the kernel is loaded automatically
    642 
    643 	If you have to load your kernel from a file system which is not of
    644 	the same type as the root file system, you have to load the necessary
    645 	file system module manually on the boot prompt or in the boot.cfg file.
    646 
    647 20080827:
    648 	If you built and installed a libc from sources between
    649 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    650 	which results in false errors reported by lint(1).
    651 	Since this breaks the libc build itself, manual help is
    652 	needed -- lint must be disabled temporarily, e.g.:
    653 	  $ (cd lib/libc && make MKLINT=no dependall install)
    654 
    655 20080813:
    656 	MKDEBUG build was broken because the .depend files did not know
    657 	about .go files.  You need to remove all .depend files and rebuild.
    658 
    659 20080802:
    660 	A regression in binary compatibility for pthread_mutex_t has
    661 	been fixed.  Unfortunately, the price is breaking compatibility
    662 	for -current.
    663 
    664 	Threaded programs (using libpthread) and C++ programs (using
    665 	libstdc++) compiled after 20070907 and before 20080802 need to
    666 	be recompiled.
    667 
    668 	One way to find affected pkgsrc packages:
    669 
    670 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    671 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    672 
    673 20080731:
    674 	WAPBL (metadata journaling support) has been added, but at this
    675 	time isn't backwards compatible with pre-WAPBL aware kernels
    676 	and userland (fsck_ffs in particular).  Please make sure you
    677 	don't use a journaled filesystem with an older kernel/userland,
    678 	especially an uncleanly mounted journaled filesystem.  WAPBL
    679 	also requires the super block to be in the UFS2 format.  You
    680 	can use fsck_ffs -c 4 to update the superblock format.
    681 
    682 20080721:
    683 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    684 	isn't defined.
    685 
    686 20080531:
    687 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    688 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    689 	utility needs to be rebuilt and reinstalled as older binaries
    690 	won't work correctly.  The following sequence of commands:
    691 
    692 	  $ (cd sys/sys/ && nbmake-$arch includes)
    693 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    694 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    695 
    696 	leaves new drvctl utility in sbin/drvctl build directory.
    697 
    698 20080503:
    699 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    700 
    701 20080521:
    702 	For a while, unprivileged UPDATE builds would fail to
    703 	succeed at the checkflist stage, complaining that
    704 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    705 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    706 	If you already hit this problem, update the .mk file,
    707 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    708 
    709 20080303:
    710 	Linker warnings are now fatal if $WARNS>0.
    711 
    712 20080126:
    713 	The posix_fadvise system call has been changed from an assembly
    714 	stub, to a c file that calls an assembly stub.  You need to
    715 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    716 	avoid using the old assembly stub.
    717 
    718 20071209:
    719 	The acpiec(4) driver has been split into two attachments.  If you
    720 	get ACPI errors before the attachment, please update your kernel
    721 	configuration file appropriately or see GENERIC for more details.
    722 
    723 20071115:
    724 	The it(4) driver has been renamed to itesio(4) and the old port
    725 	argument specified in the kernel configuration file is not valid
    726 	anymore.  The itesio(4) driver now uses the Super I/O address port
    727 	rather than the EC address port.  Please update your kernel
    728 	configuration file appropriately or see GENERIC for more details.
    729 
    730 20071028:
    731 	The pccons(4) driver has been removed from the NetBSD/shark port.
    732 	You need to update any custom kernel configuration file you have
    733 	to remove any references to pccons (which includes removing the
    734 	now useless XSERVER option) and replace them with the correct
    735 	entries for the wscons driver.  See the GENERIC configuration file
    736 	for more details.
    737 
    738 20070913:
    739 	A latent bug in dhclient/dhcpd that caused it to be unable to
    740 	enumerate interfaces was fixed.  The bug began to cause
    741 	problems after 20070911 when the kernel's SIOCGIFCONF
    742 	implementation was repaired.  From 20070529 to 20070911 racoon
    743 	could not enumerate interfaces.  (These are noted because
    744 	normal kernel/userspace version matching hygiene is not
    745 	sufficient to avoid this problem.)  Ensure that both kernel
    746 	and userland are from after 20070913.
    747 
    748 20070703:
    749 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    750 	calls the target-specific strip program, and the logic to pass
    751 	down STRIP from make has been removed.  This requires a
    752 	re-installation of tools.
    753 
    754 20070422:
    755 	The way OS emulations lookup filenames inside the emulation root
    756 	has been changed.  Rather than modify the pathname (and copy back
    757 	to userspace) namei() and lookup() directly check the emulation
    758 	root.  One side effect is that absolute symlinks inside the emulated
    759 	root file system will be relative to that file system - unless they
    760 	start /../ this is useful when the emulated root is a real install
    761 	that has such links.
    762 	This might affect symlinks that have been added to reference outside
    763 	the emulated root.
    764 
    765 20070412:
    766 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    767 	instead.  See the GENERIC32_IP3x kernel configuration for an
    768 	example.
    769 
    770 20070319:
    771         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    772         on many platforms due to incorrect flags settings.  If you
    773         updated and built after about 20070315, do "nbmake-$arch
    774 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    775 	rebuild of object files that might have been built
    776 	incorrectly, and ensure that you have at least
    777 	src/lib/libc/Makefile 1.130.
    778 
    779 20070210:
    780         src/sys/sys/{sa.h,savar.h} were removed.
    781           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    782               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    783         will allow dependencies on those files to get get rebuilt
    784 
    785 20070209:
    786         The threading model was changed when the newlock2 branch
    787         was merged to NetBSD-current.  If you boot with a new
    788         kernel (version 4.99.10), then you also need a new pthread
    789         library (/usr/lib/libpthread.so.0.7).  If you boot with
    790         an old kernel, then you need the old pthread library
    791         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    792         the pthread library in sync, old threaded applications should
    793         continue to work with an old or new kernel.  Note that named(8)
    794 	is the only threaded application in the base system.
    795 
    796 20061214:
    797 	Following the move of string_to_flags() and flags_to_string()
    798 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    799 	will need to do a "make cleandir" in
    800 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    801 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    802 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    803 		as the installation images in distrib/
    804 	in order to excise stale references to the old stat_flags.h header
    805 	file in the ls sources -- stat_flags.h has been removed.
    806 
    807 20061108:
    808 	The configure script used in the src/tools/gcc compiler has been
    809 	changed to indicate that our libc has ssp support built-in and
    810 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    811 	make clean in src/tools/gcc first to rebuild the compiler.
    812 
    813 20061009:
    814 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    815 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    816 
    817 20060814:
    818 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    819 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    820 	kernel configuration for an example.  X servers from the last
    821 	few years should cope.
    822 
    823 20060703:
    824 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    825 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    826 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    827 
    828 20060627:
    829 	socket(2) has changed, and its system call has been versioned.
    830 	For userlands with the old version of socket(2), make sure that
    831 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    832 	errors will result.
    833 
    834 Hints for a more successful build:
    835 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    836     Use build.sh, but do not use its "expert mode":
    837 	This will automatically build the tools in the
    838 	   correct order, and it will keep the tools and the
    839 	   new build products from interfering with the running
    840 	   system.  This will allow you to ignore most of the
    841 	   other advice in this file.
    842     Build a new kernel first:
    843 	This makes sure that any new system calls or features
    844 	   expected by the new userland will be present.  This
    845 	   helps to avoid critical errors when upgrading.
    846     Use object directories:
    847 	This helps to keep stale object
    848 	   files from polluting the build if a Makefile "forgets"
    849 	   about one.  It also makes it easier to clean up after
    850 	   a build.  It's also necessary if you want to use the
    851 	   same source tree for multiple machines.
    852 	   To use object directories with build.sh:
    853 	    a) invoke build.sh with the "-M" or "-O" options.
    854 	   To use object directories without using build.sh:
    855 	    a) cd /usr/src ; make cleandir
    856 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    857 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    858 	    d) cd /usr/src ; make build
    859 	   Note that running "make obj" in a directory will create
    860 	   in obj.$MACHINE directory.
    861     Build to a DESTDIR:
    862 	This helps to keep old installed files (especially libraries)
    863 	   from interfering with the new build.
    864 	   To build to a DESTDIR with build.sh, use the "-D" option.
    865 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    866 	   environment variable before running make build.  It should be
    867 	   set to the pathname of an initially empty directory.
    868 	   Problems: if you do not use build.sh, you might need to
    869 		update critical utilities without using DESTDIR since
    870 		nothing is executed from what is installed in DESTDIR.
    871 		(See critical utils, below.)
    872     Build often:
    873 	This keeps critical utilities current enough to not choke
    874 	on any other part of the source tree that depends on up to
    875 	date functionality.  If you use build.sh, you should not have
    876 	this problem.
    877 
    878 What to do if things don't work:
    879 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    880 When things don't work there are usually a few things that commonly
    881 should be done.
    882     1)	make includes
    883 	This should be done automatically by make build.
    884     2)  cd share/mk && make install
    885 	Again, automatically done by make build.
    886 
    887 Failsafe rebuild of a small part of the tree:
    888 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    889 To make sure you rebuild something correctly you want to do
    890 something like the following:
    891     1)  Make sure the includes and .mk files are up to date.
    892     2)  Make sure any program used to build the particular
    893 	utility is up to date.  (yacc, lex, etc...)
    894     3)  cd ...path/to/util...
    895 	make cleandir
    896 	rm ...all obj directories...
    897 	make cleandir			# yes, again
    898 	make obj
    899 	make depend && make
    900 
    901 Failsafe rebuild of the entire tree:
    902 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    903 If you really want to make sure the source tree is clean and
    904 ready for a build try the following.  Note that sourcing /etc/mk.conf
    905 (a make(1) Makefile) in this manner is not right, and will not work
    906 for anyone who uses any make(1) features in /etc/mk.conf.
    907 
    908 ---cut here---
    909 #!/bin/sh
    910 . /etc/mk.conf
    911 
    912 if [ -z $NETBSDSRCDIR ] ; then
    913     NETBSDSRCDIR=/usr/src
    914 fi
    915 if [ \! -d $NETBSDSRCDIR ] ; then
    916     echo Unable to find sources
    917     exit 1
    918 fi
    919 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    920 
    921 if [ -z $BSDOBJDIR ] ; then
    922     BSDOBJDIR=/usr/obj
    923 fi
    924 if [ -d $BSDOBJDIR ] ; then
    925     rm -rf $BSDOBJDIR
    926 fi
    927 
    928 cd $NETBSDSRCDIR && make cleandir
    929 
    930 ---cut here---
    931 
    932 Critical utilities:
    933 ^^^^^^^^^^^^^^^^^^^
    934 	usr.bin/compile_et
    935 	usr.bin/make
    936 	usr.bin/yacc
    937 	usr.bin/lex
    938 	usr.bin/xlint
    939 	usr.bin/config
    940 
    941 Other problems and possible solutions:
    942 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    943 Symptom:Complaints involving a Makefile.
    944 Fix:	Rebuild usr.bin/make:
    945 	cd usr.bin/make && make && make install
    946 	Or, a failsafe method if that doesn't work:
    947 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    948 
    949 Fix:	Make sure .mk files are up to date.
    950 	cd share/mk && make install
    951 
    952 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    953 Fix:	Rebuild usr.bin/config
    954 
    955 Symptom:
    956 Fix:	Rebuild usr.bin/yacc
    957 
    958 Symptom:
    959 Fix:	Rebuild usr.bin/lex
    960 
    961 Symptom:
    962 Fix:	rm /usr/lib/libbfd.a
    963 
    964 Symptom:Obsolete intermediate files are used during compilation
    965 Fix:	Try the following sequence of commands in the directory in question.
    966 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    967 	(If you built the tree without "make obj" in the past, obsolete files
    968 	may remain.  The command tries to clean everything up)
    969 
    970 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
    971 	pointer type
    972 Fix:	Rebuild and install usr.bin/menuc
    973 
    974 Symptom:mklocale not found during build in share/locale/ctype
    975 Fix:	Build and install usr.bin/mklocale
    976 
    977 Symptom:undefined reference to `__assert13' or `__unsetenv13'
    978 Fix:    Rebuild and install lib/libc
    979 
    980 Symptom:usr.bin/config fails to build.
    981 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
    982 
    983 Symptom:undefined reference to `getprogname' or `setprogname'
    984 Fix:    Rebuild and install lib/libc
    985 
    986 Symptom:lint does not understand the '-X' option
    987 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
    988 
    989 Symptom:Update build fails in src/tools/gcc complaining that a variable
    990 	(e.g. CPPFLAGS) has changed since the previous run.
    991 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
    992 
    993 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
    994 	No such file or directory.
    995 Cause:	If a directory is created by mistake, then it is sometimes
    996 	deleted from the CVS repository using administrative commands
    997 	that bypass the normal cvs access controls.  If your cvs working tree
    998 	contains references to a directory that has been deleted on the
    999 	server in this way, then "cvs update" reports this error.
   1000 Fix:	Recursively delete the affected directory from your working tree
   1001 	and try the update again.
   1002