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UPDATING revision 1.306
      1 $NetBSD: UPDATING,v 1.306 2019/11/18 15:42:26 christos 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 20191118:
     23 	More architectures were switched to gcc8:
     24 	    i386, ia64 powerpc64, sparc, sparc64, arm
     25 	The same comments as in 20191022 apply.
     26 
     27 20191112:
     28 	The LLVM update requires a clean rebuild for all architectures using
     29 	LLVM during the tools build phase (i386, amd64, aarch64).
     30 
     31 20191022:
     32 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
     33 	In-place ("expert mode", build.sh -E) builds are not supported
     34 	when going from a GCC 7 userland to GCC 8. Do a regular
     35 	build to a different DESTDIR (or preferably: build.sh -U) at least
     36 	once and install sets, or download comp.{tar.xz,tgz} from the
     37 	daily builds and install that before doing the next in-place build.
     38 
     39 20191001:
     40 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
     41 	old builds with GCC 7 output now uses GCC 8.  Clean this
     42 	directory, and also clean src/external/gpl3/gcc.
     43 
     44 20190903:
     45 	Files with names that coincide with existing files' names on
     46 	case-insensitive file systems were inadvertently committed, for
     47 	radeon GPU firmware.  We cannot mark these as obsolete for
     48 	postinstall to fix, so if you updated src since 2019-08-26, and
     49 	ran build.sh distribution or ran build.sh release, you must
     50 	manually delete the following files in your DESTDIR (which is
     51 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
     52 	them:
     53 
     54 		/libdata/firmware/radeon/bonaire_ce.bin
     55 		/libdata/firmware/radeon/bonaire_mc.bin
     56 		/libdata/firmware/radeon/bonaire_me.bin
     57 		/libdata/firmware/radeon/bonaire_mec.bin
     58 		/libdata/firmware/radeon/bonaire_pfp.bin
     59 		/libdata/firmware/radeon/bonaire_rlc.bin
     60 		/libdata/firmware/radeon/bonaire_sdma.bin
     61 		/libdata/firmware/radeon/bonaire_smc.bin
     62 		/libdata/firmware/radeon/bonaire_uvd.bin
     63 		/libdata/firmware/radeon/hainan_ce.bin
     64 		/libdata/firmware/radeon/hainan_mc.bin
     65 		/libdata/firmware/radeon/hainan_me.bin
     66 		/libdata/firmware/radeon/hainan_pfp.bin
     67 		/libdata/firmware/radeon/hainan_rlc.bin
     68 		/libdata/firmware/radeon/hainan_smc.bin
     69 		/libdata/firmware/radeon/hawaii_ce.bin
     70 		/libdata/firmware/radeon/hawaii_mc.bin
     71 		/libdata/firmware/radeon/hawaii_me.bin
     72 		/libdata/firmware/radeon/hawaii_mec.bin
     73 		/libdata/firmware/radeon/hawaii_pfp.bin
     74 		/libdata/firmware/radeon/hawaii_rlc.bin
     75 		/libdata/firmware/radeon/hawaii_sdma.bin
     76 		/libdata/firmware/radeon/hawaii_smc.bin
     77 		/libdata/firmware/radeon/kabini_ce.bin
     78 		/libdata/firmware/radeon/kabini_me.bin
     79 		/libdata/firmware/radeon/kabini_mec.bin
     80 		/libdata/firmware/radeon/kabini_pfp.bin
     81 		/libdata/firmware/radeon/kabini_rlc.bin
     82 		/libdata/firmware/radeon/kabini_sdma.bin
     83 		/libdata/firmware/radeon/kaveri_ce.bin
     84 		/libdata/firmware/radeon/kaveri_me.bin
     85 		/libdata/firmware/radeon/kaveri_mec.bin
     86 		/libdata/firmware/radeon/kaveri_mec2.bin
     87 		/libdata/firmware/radeon/kaveri_pfp.bin
     88 		/libdata/firmware/radeon/kaveri_rlc.bin
     89 		/libdata/firmware/radeon/kaveri_sdma.bin
     90 		/libdata/firmware/radeon/mullins_ce.bin
     91 		/libdata/firmware/radeon/mullins_me.bin
     92 		/libdata/firmware/radeon/mullins_mec.bin
     93 		/libdata/firmware/radeon/mullins_pfp.bin
     94 		/libdata/firmware/radeon/mullins_rlc.bin
     95 		/libdata/firmware/radeon/mullins_sdma.bin
     96 		/libdata/firmware/radeon/oland_ce.bin
     97 		/libdata/firmware/radeon/oland_mc.bin
     98 		/libdata/firmware/radeon/oland_me.bin
     99 		/libdata/firmware/radeon/oland_pfp.bin
    100 		/libdata/firmware/radeon/oland_rlc.bin
    101 		/libdata/firmware/radeon/oland_smc.bin
    102 		/libdata/firmware/radeon/pitcairn_ce.bin
    103 		/libdata/firmware/radeon/pitcairn_mc.bin
    104 		/libdata/firmware/radeon/pitcairn_me.bin
    105 		/libdata/firmware/radeon/pitcairn_pfp.bin
    106 		/libdata/firmware/radeon/pitcairn_rlc.bin
    107 		/libdata/firmware/radeon/pitcairn_smc.bin
    108 		/libdata/firmware/radeon/tahiti_ce.bin
    109 		/libdata/firmware/radeon/tahiti_mc.bin
    110 		/libdata/firmware/radeon/tahiti_me.bin
    111 		/libdata/firmware/radeon/tahiti_pfp.bin
    112 		/libdata/firmware/radeon/tahiti_rlc.bin
    113 		/libdata/firmware/radeon/tahiti_smc.bin
    114 		/libdata/firmware/radeon/verde_ce.bin
    115 		/libdata/firmware/radeon/verde_mc.bin
    116 		/libdata/firmware/radeon/verde_me.bin
    117 		/libdata/firmware/radeon/verde_pfp.bin
    118 		/libdata/firmware/radeon/verde_rlc.bin
    119 		/libdata/firmware/radeon/verde_smc.bin
    120 
    121 	We will re-import these radeon firmware images another way
    122 	later.
    123 
    124 20190727:
    125 	The uefi bootloader has gained tftp support and needs a clean
    126 	build. If you do update builds, manually clean its object
    127 	directory by something like:
    128 	cd sys/arch/i386/stand/efiboot && make clean
    129 
    130 20190723:
    131 	The jemalloc allocator in libc is now build without extended
    132 	debugging (for performance reasons). In update builds make sure
    133 	to rebuild it completly, by removing all affected object files,
    134 	including compat builds, something like:
    135 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    136 
    137 20190207:
    138 	GCC 7 switched for many ports.  Update builds are likely to fail.
    139 
    140 20180924:
    141 	A newer OpenSSL version has been imported. If you are doing
    142 	update builds, make sure to remove all old obj dirs, like:
    143 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    144 
    145 20180717:
    146 	On aarch64 int64_t and related types have changed from long long
    147 	to long. This requires recompiling all C++ binaries.
    148 
    149 20180713:
    150 	On amd64 and i386 static binaries are now build position
    151 	independend. This requires recompilation of all object
    152 	files used to create the crunched /rescue binary.
    153 	Clean the rescue directory in your obj directory before
    154 	doing an update build, otherwise linking will fail.
    155 
    156 20180414:
    157 	Existing binutils was migrated to binutils.old.  Manual
    158 	removal of tools/binutils objects directory may be required
    159 	to fix tools build failure.
    160 
    161 20180311:
    162 	bdftopcf was updated and may need cleaning in the
    163 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    164 	link errors.
    165 
    166 20180212:
    167 	between OpenSSL and GCC updates, many things may fail to build.
    168 	any failure that looks like GCC or openssl is best handled by
    169 	a clean destdir and objdir.  Full cleandir and destdir deletion
    170 	is recommended if build failures occur.
    171 
    172 20171225:
    173 	removal of the vadvise syscall requires manual removal of all
    174 	associated files from the libc build object directory (including
    175 	the .depend files) - a command like:
    176 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    177 	For architectures that support multiple "compat" binary targets,
    178 	you'll need to cleanup both the regular libc directory and the
    179 	compat ones (the above command will do that).
    180 
    181 20171010:
    182 	a change to the build structure of external/bsd/acpica/bin/iasl
    183 	means that its objdir (or *.d and .depend at least) might need
    184 	to be manually removed - or a build done once without -u.
    185 
    186 20170822:
    187 	a new version of GMP has been imported and probably
    188 	will break parts of builds related to themselves or GCC, both
    189 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    190 	and MPC objdirs or build once without -u.
    191 
    192 20170816:
    193 	a new version of MPFR and MPC have been imported and probably
    194 	will break parts of builds related to themselves or GCC, both
    195 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    196 	and MPC objdirs or build once without -u.
    197 
    198 20170402:
    199 	a new version of dhcpcd has been imported, which does not support
    200 	update builds from the previous version. Remove your
    201 	external/bsd/dhcpcd object dir or build once without -u.
    202 
    203 20170211:
    204 	a new terminfo database has been imported.
    205 	The structure of it has changed slightly from prior versions and
    206 	an updated tic tool is required.
    207 	If you build.sh, don't use -u
    208 
    209 20170207:
    210 	various arch dependent libc/exect.S files were removed
    211 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    212 	if it exists) or do a clean build.
    213 	(This is a bug in the make system, it should be corrected without
    214 	human intervention, but isn't.)
    215 
    216 20170104:
    217 	xinput build options have changed.
    218 	Remove the obj directory (external/mit/xorg/bin/xinput)
    219 	if you build.sh -u
    220 
    221 20170103:
    222 	a new version of flex has been imported.
    223 	Remove the file from obj (external/bsd/flex)
    224 	if you build.sh -u
    225 
    226 20161014:
    227 	a new version of OpenSSL has been imported.
    228 	Remove the files from obj (crypto/external/bsd/openssl) 
    229 	if you build.sh -u
    230 
    231 20161009:
    232 	a new version of dhcpcd has been imported with slightly changed
    233 	build infrastructure. When doing a build.sh -u this requires
    234 	pruning the external/bsd/dhcpcd objdir.
    235 
    236 20160914:
    237 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    238 	ports in using xorg-server 1.18. This requires a clean destdir
    239 	and a clean objdir.
    240 
    241 20160527:
    242 	i386 needs a full cleandir or objdir deletion because PIE has
    243 	been enabled. (see the amd64 entry two down for further info)
    244 
    245 20160418:
    246 	libedit needs manual removal of all autogenerated files since
    247 	some of them are not autogenerated anymore. Remember that there
    248 	might be two copies of libedit if your platform builds "compat".
    249 
    250 20160410:
    251 	amd64 needs full "make cleandir" or deletion of objdir now that
    252 	PIE has been enabled for amd64.  PIE, or position-independent
    253 	executables, means all code, including executables and not just
    254 	shared libraries, is position-independent and hence able to be
    255 	relocated by ASLR, address space layout randomization.
    256 
    257 	The change was made in Makefile variables for compiler and
    258 	linker flags, for which make(1) does not record dependencies,
    259 	hence it is unable to detect that all .o files need rebuilding.
    260 
    261 	Partial rebuilds with some modified source files will likely
    262 	fail when linking executables, since the linker refuses to mix
    263 	position-independent code with position-dependent code in
    264 	position-independent executables:
    265 
    266 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    267 
    268 20160401:
    269 	Ports switching to GCC 5.3 will need a full "make cleandir".
    270 	Some people have found that cleandir is not sufficient, so if
    271 	in doubt delete the entire object directory tree for gcc.
    272 
    273 20160306:
    274 	NetBSD's regexp implementation is now part of libnbcompat.
    275 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    276 	non-NetBSD hosts if linked with stale object files produced
    277 	while they included a non-NetBSD regex.h.
    278 	In any case, you should "make cleandir" at least these tools
    279 	before updating your toolchain.
    280 
    281 20160125:
    282 	Dtrace has been enabled by default on some architectures.
    283 	When doing an update build, make sure to clean the etc/mtree
    284 	object directory before starting the build - otherwise the
    285 	needed directories in destdir will not be created.
    286 	An easy way to do this is:
    287 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    288 
    289 20150818:
    290 	New acpica requires "make cleandir" in src/external/bsd/acpica
    291 	again.
    292 
    293 20150413:
    294 	New acpica requires "make cleandir" and reinstalling yacc
    295 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    296 	also "make cleandir" in /usr/src/external/bsd/acpica.
    297 
    298 20150404:
    299 	Lint changes require a full rebuild of the tool, so make
    300 	sure to build without -u option to build.sh, or manually
    301 	do a make cleandir in src/tools/lint1 and
    302 	src/usr.bin/xlint.
    303 
    304 20150310:
    305 	Improvements to openssl for arm mean that update builds of
    306 	the openssl libraries will fail. A make cleandir in
    307 	external/bsd/openssl/lib is needed
    308 
    309 20141026:
    310 	A mishap during the import of pppd may cause your corruption
    311 	in your cvs directory if you happened to do a cvs update
    312 	during a short period of time. To fix, just remove the
    313 	directory src/external/bsd/ppp/dist/pppd completely
    314 	and let cvs restore it on next update.
    315 
    316 20140721:
    317 	The src/external/mit/lua/src directory was accidentally created
    318 	and then deleted in the CVS repository.  If you get errors like
    319 
    320 	cvs [update aborted]: cannot open directory
    321 	/cvsroot/src/external/mit/lua/src: No such file or directory
    322 
    323 	then delete your local copy of that directory tree and try again.
    324 
    325 20140530:
    326 	ARM eABI switched to DWARF based exception handling. This requires
    327 	rebuilding all C++ code. It is strongly advised to do a clean build.
    328 
    329 20140131:
    330 	The new compiler_rt/libc integration moved a few things. It is strongly
    331 	advised to do a clean build. At least lib/libc, the compat version(s)
    332 	of libc, libkern, rump and the kernels need to be cleaned.
    333 
    334 20131227:
    335 	1. The new ntpd runs in a restricted mode to prevent amplification
    336 	   attacks. If you need ntpdc to work you need to explicitly enable
    337 	   mode7 in your config file. Make sure you put the necessary restrict
    338 	   statements to avoid being exposed.
    339 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    340 	   to make clean in libc
    341 
    342 20131129:
    343 	The GMP sources were updated, and builds will likely fail without
    344 	cleaning their build trees for both tools and in-tree, like below.
    345 
    346 20131128:
    347 	The MPC and MPFR sources were updated, and builds may require their
    348 	tools and in-tree directories cleaned for successful updates.
    349 
    350 20130605:
    351 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    352 	to IPSEC (and the older IPSEC version removed).
    353 
    354 20130605:
    355 	Previous freetype installations eroneously installed private
    356 	header files. If you are building against a non-empty $DESTDIR,
    357 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    358 
    359 20130531:
    360 	The xdm update may cause build failure due to xdm.man being
    361 	in the obj tree.  Make sure to ensure any like this:
    362 		nbmake: nbmake: don't know how to make xdm.man. Stop
    363 	is fixed by deleting the xdm.man in the obj tree.
    364 
    365 20130530:
    366 	Updates of many xsrc packages will leave old .pc files around.
    367 	Best to clean out the xsrc objdir entirely before rebuilds.
    368 
    369 20130301:
    370 	The removal of netiso requires manual removal of /usr/include/netiso
    371 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    372 
    373 20120726:
    374 	The update of OpenSSL requires cleaning both the OpenSSL build
    375 	directory and DESTDIR.  *Even non-update builds require cleaning
    376 	DESTDIR.* Builds done without taking these steps may fail, or in
    377 	some cases may succeed and install broken OpenSSL libraries that
    378 	cause third-party software to link incorrectly and/or crash.
    379 
    380 20120507:
    381 	The database schema for makemandb was changed.  You will
    382 	need to update the database using 'makemandb -f' or wait
    383 	for the next weekly run to fix it.
    384 
    385 20120319:
    386 	sys/conf/Makefile.kern.inc has been modified to adjust the
    387 	size of db_symtab automatically.  You need to update dbsym in
    388 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    389 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    390 	mk.conf.
    391 
    392 20120216:
    393 	Default for MKCATPAGES changed to NO.  Update builds will fail
    394 	unless DESTDIR is cleaned manually.  If you built between 20120207
    395 	and 20120216, daily and weekly could have created an unreadable
    396 	/var/db/man.db index for apropos.  Running makemandb -f or
    397 	the next run of weekly will fix it.
    398 
    399 20111227:
    400 	If you built between 20111225 and 20111227 you need to remove
    401 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    402 	bump has been reverted.
    403 
    404 20111125:
    405 	The "rnd" pseudodevice has been added to sys/conf/std, which
    406 	means it should no longer be explicitly listed in kernel
    407 	configuration files.  The line "pseudo-device rnd" should be
    408 	removed from any custom kernel config files users may have.
    409 
    410 20111119:
    411 	A problem with the datastructures used by the rndctl(8)
    412 	utility (pointers in datastructures in an array, making 32->64
    413 	bit compatibility very painful) has been fixed in a
    414 	non-backwards-compatible way.  If you replace your kernel,
    415 	replace your rndctl executable too.
    416 
    417 20111001:
    418 	the prop_*_send_syscall() functions from proplib(3) have been
    419 	changed and their new version is not backward compatible with the old
    420 	one.  So ensure that all consumers of these functions (currently:
    421 	quota2 code and its tests) are updated together with the new lib.
    422 
    423 20110817:
    424 	sparc has been changed to use GCC 4.5.3, so any objdir or
    425 	DESTDIR for them should be deleted before updating.
    426 
    427 20110806:
    428 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    429 	objdir or DESTDIR for them should be deleted before updating.
    430 
    431 20110805:
    432 	The update to GCC 4.5.3 requires a non-trivial portion of
    433 	the tree to be cleaned.  Best to delete both objdir and
    434 	DESTDIR before running this update.  So far, only the
    435 	sparc64, mips and powerpc platforms have changed.
    436 
    437 20110803:
    438 	The layout of external/public-domain/xz has changed.  To do an
    439 	update build you will have to remove the contents of the OBJDIR
    440 	for external/public-domain/xz/bin by hand as the xz entry there
    441 	is now a directory.
    442 
    443 20110410:
    444 	The configuration of src/tools/gcc has changed.  To do an
    445 	update build you have to clean both tools/binutils and
    446 	tools/gcc by hand.
    447 
    448 20110328:
    449 	Building the Xorg binary was moved into a subdirectory to fix
    450 	ordering issues with "make all".  It may be necessary to remove
    451 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    452 	if your update build fails, as the "Xorg" entry there is now a
    453 	directory.
    454 
    455 20110121:
    456 	Assembler files no longer use -traditional-cpp.  This can break
    457 	the build of individual parts of the tree.  This is handled
    458 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    459 	and re-run config(1) for any kernel configurations as needed.
    460 
    461 20101217:
    462 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    463 	by default.  It may be necessary to manually update passwd(5) and
    464 	group(5) in order to make the program work with existing setups.
    465 
    466 20101125:
    467 	The latest changes to setenv(3) dissallow setting environment
    468 	variables with names that contain '='.  Revision 1.18 of env.c
    469 	assumed that this was allowed.  Installing a new libc with an
    470 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    471 	break which affects the autoconf tests for dependency finding,
    472 	so building gcc will end up printing:
    473 	    checking dependency style of gcc... none
    474 	    configure: error: no usable dependency style found
    475 	Fix it by rebuilding and re-installing env.
    476 
    477 20101119:
    478 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    479 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    480 	have any build problems with xsrc, or problems with mismatched
    481 	versions between xorg-server and drivers.
    482 
    483 20100604:
    484 	The update of ATF to 0.9 causes old tests written in shell to fail
    485 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    486 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    487 	trees by hand.
    488 
    489 20100522:
    490 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    491 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    492 	build problems with xsrc.
    493 
    494 20100522:
    495 	private section of <ctype.h> was splitted, and now mklocale(1)
    496 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    497 
    498 20100520:
    499 	The location of the xkb compiled descriptions has changed.  Please
    500 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    501 
    502 20100222:
    503 	The shared objects file extension has been changed from .so to
    504 	.pico, in order to avoid conflicts with shared libraries names
    505 	libXX.so.  All now stale regular .so files can be removed from
    506 	your object directories.
    507 
    508 20100204:
    509 	The termcap database has been removed from the sources,
    510 	but has not been marked obsolete so it is not removed
    511 	from the system when upgrading.
    512 	As such, you will need to remove them from your object
    513 	and destination directories.
    514 
    515 20091101:
    516         After updating, it may be necessary to make the 'cleandir'
    517         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    518         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    519         src/tools/lex/ and src/usr.bin/lex/.
    520 
    521 20091001:
    522 	On amd64 you must rebuild tools (to get the new binutils)
    523 	before building a kernel, or the build fails on cpufunc.S.
    524 
    525 20091001:
    526 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    527 	symlink, failing the build.  Delete the link, and the subdir
    528 	it is in, and retry your build.
    529 
    530 20090718:
    531 	libc build changed so that strchr() provides the extra entry
    532 	point for index().  Update build of libc.a (and libc_pic.a)
    533 	may fail because the archive contains the unwanted index.o.
    534 	(Similarly for strrchr() and rindex().)
    535 
    536 20090709:
    537 	Native Xorg was upgraded again.  Builds will probably fail again
    538 	without a clean objdir, at least for src/external/mit/xorg.
    539 
    540 20090616:
    541 	Native Xorg was upgraded.  Builds will need a clean objdir for
    542 	src/external/mit/xorg.  Upgrading a system from sets will not
    543 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    544 	subdirectory has been changed into a file, and this needs to
    545 	be manually "rm -r"'ed before installing xbase.tgz.
    546 
    547 20090501:
    548 	Several new functions were added to string.h/libc, and this
    549 	can cause autoconf problems during the tool build for people
    550 	who fail to clean out their tools objects properly.  If you
    551 	note messages about stpcpy, stpncpy or strnlen accompanying a
    552 	failure during the tool build, clean out all your tools
    553 	objects and start again.
    554 
    555 20090325:
    556 	The i386 port was switched to i486 default toolchain.  This requires
    557 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    558 
    559 20090126:
    560 	The __posix_fadvise50 system call changed assembly stub type.  You
    561 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    562 	to avoid using the old assembly stub.
    563 
    564 20090202:
    565 	pkg_install now depends on the pkgdb cache for automatic conflict
    566 	detection.  It is recommented to rebuild the cache with
    567 	``pkg_admin rebuild''.
    568 
    569 20090110:
    570 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    571 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    572 	   This is needed even in the MODULAR kernel because there is
    573 	   conditionally compiled code in rtsock.c.
    574 	2. make sure build.sh completes and the binaries in a chroot work
    575 	   before installing.
    576 	3. If you don't use build.sh and you build directly to root, and
    577 	   your build breaks in the middle, don't despair.  Make sure headers
    578 	   are installed properly, and start building libraries first libc
    579 	   and libutil, install them and then continue building all the
    580 	   libraries in src/lib and src/gnu/lib and install them.  Once
    581 	   the new libraries are installed, you can restart the build.
    582 	4. If you compile packages and you notice link time warnings,
    583 	   rebuild the required packages to update their shared libraries.
    584 	   Any package you rebuild will require rebuilding all the packages
    585 	   that depend on it.
    586 	5. Next time you run pwd_mkdb with the new binary, the file
    587 	   will be upgraded and it will not be backwards compatible.
    588 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    589 	   lastlogx(5)) have been versioned, and there is a heuristic
    590 	   for utmp.  You are better off removing the old files after
    591 	   upgrading.  The automated clearing of /var/run during
    592 	   boot, and the automated rotating of files in /var/log by
    593 	   newsyslog(8), may mean that you do not have to remove the
    594 	   files manually.
    595 	7. The optional accounting file (/var/account/acct, see
    596 	   accton(8)) has not been versioned, and will need to be
    597 	   removed.  The automatic rotation of the accounting file by
    598 	   /etc/daily limits the bad consequences of failure to remove
    599 	   the file.
    600 	8. Application software that writes time_t to binary files on
    601 	   disk will break or need attention.  Most notably: if you are
    602 	   using PostgreSQL < 8.4, you need to dump your databases,
    603 	   rebuild PostgreSQL with the new time_t, then restore.
    604 
    605 20081219:
    606 	config(1) has been updated, and one of the files it creates -
    607 	swapnetbsd.o - has changed format.  You need to rebuild config
    608 	(done automatically by build.sh) and then you need to rerun
    609 	config on all kernel configuration files before rebuilding those
    610 	kernels.
    611 
    612 20081205:
    613 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    614 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    615 	set and will appear as extra files for MKX11=no update builds.
    616 
    617 20081122:
    618 	On i386, various kernel options(4) in GENERIC including
    619 	file systems have been disabled and moved into kernel modules.
    620 	Before trying a new GENERIC kernel, you have to prepare the
    621 	following files as well as a new GENERIC kernel:
    622 
    623 	- build and install kernel modules from src/sys/modules
    624 
    625 	- install the latest bootloader, which will load a module
    626 	  for the file system from which the kernel is loaded automatically
    627 
    628 	If you have to load your kernel from a file system which is not of
    629 	the same type as the root file system, you have to load the necessary
    630 	file system module manually on the boot prompt or in the boot.cfg file.
    631 
    632 20080827:
    633 	If you built and installed a libc from sources between
    634 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    635 	which results in false errors reported by lint(1).
    636 	Since this breaks the libc build itself, manual help is
    637 	needed -- lint must be disabled temporarily, e.g.:
    638 	  $ (cd lib/libc && make MKLINT=no dependall install)
    639 
    640 20080813:
    641 	MKDEBUG build was broken because the .depend files did not know
    642 	about .go files.  You need to remove all .depend files and rebuild.
    643 
    644 20080802:
    645 	A regression in binary compatibility for pthread_mutex_t has
    646 	been fixed.  Unfortunately, the price is breaking compatibility
    647 	for -current.
    648 
    649 	Threaded programs (using libpthread) and C++ programs (using
    650 	libstdc++) compiled after 20070907 and before 20080802 need to
    651 	be recompiled.
    652 
    653 	One way to find affected pkgsrc packages:
    654 
    655 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    656 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    657 
    658 20080731:
    659 	WAPBL (metadata journaling support) has been added, but at this
    660 	time isn't backwards compatible with pre-WAPBL aware kernels
    661 	and userland (fsck_ffs in particular).  Please make sure you
    662 	don't use a journaled filesystem with an older kernel/userland,
    663 	especially an uncleanly mounted journaled filesystem.  WAPBL
    664 	also requires the super block to be in the UFS2 format.  You
    665 	can use fsck_ffs -c 4 to update the superblock format.
    666 
    667 20080721:
    668 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    669 	isn't defined.
    670 
    671 20080531:
    672 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    673 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    674 	utility needs to be rebuilt and reinstalled as older binaries
    675 	won't work correctly.  The following sequence of commands:
    676 
    677 	  $ (cd sys/sys/ && nbmake-$arch includes)
    678 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    679 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    680 
    681 	leaves new drvctl utility in sbin/drvctl build directory.
    682 
    683 20080503:
    684 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    685 
    686 20080521:
    687 	For a while, unprivileged UPDATE builds would fail to
    688 	succeed at the checkflist stage, complaining that
    689 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    690 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    691 	If you already hit this problem, update the .mk file,
    692 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    693 
    694 20080303:
    695 	Linker warnings are now fatal if $WARNS>0.
    696 
    697 20080126:
    698 	The posix_fadvise system call has been changed from an assembly
    699 	stub, to a c file that calls an assembly stub.  You need to
    700 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    701 	avoid using the old assembly stub.
    702 
    703 20071209:
    704 	The acpiec(4) driver has been split into two attachments.  If you
    705 	get ACPI errors before the attachment, please update your kernel
    706 	configuration file appropriately or see GENERIC for more details.
    707 
    708 20071115:
    709 	The it(4) driver has been renamed to itesio(4) and the old port
    710 	argument specified in the kernel configuration file is not valid
    711 	anymore.  The itesio(4) driver now uses the Super I/O address port
    712 	rather than the EC address port.  Please update your kernel
    713 	configuration file appropriately or see GENERIC for more details.
    714 
    715 20071028:
    716 	The pccons(4) driver has been removed from the NetBSD/shark port.
    717 	You need to update any custom kernel configuration file you have
    718 	to remove any references to pccons (which includes removing the
    719 	now useless XSERVER option) and replace them with the correct
    720 	entries for the wscons driver.  See the GENERIC configuration file
    721 	for more details.
    722 
    723 20070913:
    724 	A latent bug in dhclient/dhcpd that caused it to be unable to
    725 	enumerate interfaces was fixed.  The bug began to cause
    726 	problems after 20070911 when the kernel's SIOCGIFCONF
    727 	implementation was repaired.  From 20070529 to 20070911 racoon
    728 	could not enumerate interfaces.  (These are noted because
    729 	normal kernel/userspace version matching hygiene is not
    730 	sufficient to avoid this problem.)  Ensure that both kernel
    731 	and userland are from after 20070913.
    732 
    733 20070703:
    734 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    735 	calls the target-specific strip program, and the logic to pass
    736 	down STRIP from make has been removed.  This requires a
    737 	re-installation of tools.
    738 
    739 20070422:
    740 	The way OS emulations lookup filenames inside the emulation root
    741 	has been changed.  Rather than modify the pathname (and copy back
    742 	to userspace) namei() and lookup() directly check the emulation
    743 	root.  One side effect is that absolute symlinks inside the emulated
    744 	root file system will be relative to that file system - unless they
    745 	start /../ this is useful when the emulated root is a real install
    746 	that has such links.
    747 	This might affect symlinks that have been added to reference outside
    748 	the emulated root.
    749 
    750 20070412:
    751 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    752 	instead.  See the GENERIC32_IP3x kernel configuration for an
    753 	example.
    754 
    755 20070319:
    756         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    757         on many platforms due to incorrect flags settings.  If you
    758         updated and built after about 20070315, do "nbmake-$arch
    759 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    760 	rebuild of object files that might have been built
    761 	incorrectly, and ensure that you have at least
    762 	src/lib/libc/Makefile 1.130.
    763 
    764 20070210:
    765         src/sys/sys/{sa.h,savar.h} were removed.
    766           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    767               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    768         will allow dependencies on those files to get get rebuilt
    769 
    770 20070209:
    771         The threading model was changed when the newlock2 branch
    772         was merged to NetBSD-current.  If you boot with a new
    773         kernel (version 4.99.10), then you also need a new pthread
    774         library (/usr/lib/libpthread.so.0.7).  If you boot with
    775         an old kernel, then you need the old pthread library
    776         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    777         the pthread library in sync, old threaded applications should
    778         continue to work with an old or new kernel.  Note that named(8)
    779 	is the only threaded application in the base system.
    780 
    781 20061214:
    782 	Following the move of string_to_flags() and flags_to_string()
    783 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    784 	will need to do a "make cleandir" in
    785 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    786 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    787 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    788 		as the installation images in distrib/
    789 	in order to excise stale references to the old stat_flags.h header
    790 	file in the ls sources -- stat_flags.h has been removed.
    791 
    792 20061108:
    793 	The configure script used in the src/tools/gcc compiler has been
    794 	changed to indicate that our libc has ssp support built-in and
    795 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    796 	make clean in src/tools/gcc first to rebuild the compiler.
    797 
    798 20061009:
    799 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    800 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    801 
    802 20060814:
    803 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    804 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    805 	kernel configuration for an example.  X servers from the last
    806 	few years should cope.
    807 
    808 20060703:
    809 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    810 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    811 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    812 
    813 20060627:
    814 	socket(2) has changed, and its system call has been versioned.
    815 	For userlands with the old version of socket(2), make sure that
    816 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    817 	errors will result.
    818 
    819 Hints for a more successful build:
    820 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    821     Use build.sh, but do not use its "expert mode":
    822 	This will automatically build the tools in the
    823 	   correct order, and it will keep the tools and the
    824 	   new build products from interfering with the running
    825 	   system.  This will allow you to ignore most of the
    826 	   other advice in this file.
    827     Build a new kernel first:
    828 	This makes sure that any new system calls or features
    829 	   expected by the new userland will be present.  This
    830 	   helps to avoid critical errors when upgrading.
    831     Use object directories:
    832 	This helps to keep stale object
    833 	   files from polluting the build if a Makefile "forgets"
    834 	   about one.  It also makes it easier to clean up after
    835 	   a build.  It's also necessary if you want to use the
    836 	   same source tree for multiple machines.
    837 	   To use object directories with build.sh:
    838 	    a) invoke build.sh with the "-M" or "-O" options.
    839 	   To use object directories without using build.sh:
    840 	    a) cd /usr/src ; make cleandir
    841 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    842 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    843 	    d) cd /usr/src ; make build
    844 	   Note that running "make obj" in a directory will create
    845 	   in obj.$MACHINE directory.
    846     Build to a DESTDIR:
    847 	This helps to keep old installed files (especially libraries)
    848 	   from interfering with the new build.
    849 	   To build to a DESTDIR with build.sh, use the "-D" option.
    850 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    851 	   environment variable before running make build.  It should be
    852 	   set to the pathname of an initially empty directory.
    853 	   Problems: if you do not use build.sh, you might need to
    854 		update critical utilities without using DESTDIR since
    855 		nothing is executed from what is installed in DESTDIR.
    856 		(See critical utils, below.)
    857     Build often:
    858 	This keeps critical utilities current enough to not choke
    859 	on any other part of the source tree that depends on up to
    860 	date functionality.  If you use build.sh, you should not have
    861 	this problem.
    862 
    863 What to do if things don't work:
    864 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    865 When things don't work there are usually a few things that commonly
    866 should be done.
    867     1)	make includes
    868 	This should be done automatically by make build.
    869     2)  cd share/mk && make install
    870 	Again, automatically done by make build.
    871 
    872 Failsafe rebuild of a small part of the tree:
    873 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    874 To make sure you rebuild something correctly you want to do
    875 something like the following:
    876     1)  Make sure the includes and .mk files are up to date.
    877     2)  Make sure any program used to build the particular
    878 	utility is up to date.  (yacc, lex, etc...)
    879     3)  cd ...path/to/util...
    880 	make cleandir
    881 	rm ...all obj directories...
    882 	make cleandir			# yes, again
    883 	make obj
    884 	make depend && make
    885 
    886 Failsafe rebuild of the entire tree:
    887 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    888 If you really want to make sure the source tree is clean and
    889 ready for a build try the following.  Note that sourcing /etc/mk.conf
    890 (a make(1) Makefile) in this manner is not right, and will not work
    891 for anyone who uses any make(1) features in /etc/mk.conf.
    892 
    893 ---cut here---
    894 #!/bin/sh
    895 . /etc/mk.conf
    896 
    897 if [ -z $NETBSDSRCDIR ] ; then
    898     NETBSDSRCDIR=/usr/src
    899 fi
    900 if [ \! -d $NETBSDSRCDIR ] ; then
    901     echo Unable to find sources
    902     exit 1
    903 fi
    904 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    905 
    906 if [ -z $BSDOBJDIR ] ; then
    907     BSDOBJDIR=/usr/obj
    908 fi
    909 if [ -d $BSDOBJDIR ] ; then
    910     rm -rf $BSDOBJDIR
    911 fi
    912 
    913 cd $NETBSDSRCDIR && make cleandir
    914 
    915 ---cut here---
    916 
    917 Critical utilities:
    918 ^^^^^^^^^^^^^^^^^^^
    919 	usr.bin/compile_et
    920 	usr.bin/make
    921 	usr.bin/yacc
    922 	usr.bin/lex
    923 	usr.bin/xlint
    924 	usr.bin/config
    925 
    926 Other problems and possible solutions:
    927 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    928 Symptom:Complaints involving a Makefile.
    929 Fix:	Rebuild usr.bin/make:
    930 	cd usr.bin/make && make && make install
    931 	Or, a failsafe method if that doesn't work:
    932 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    933 
    934 Fix:	Make sure .mk files are up to date.
    935 	cd share/mk && make install
    936 
    937 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    938 Fix:	Rebuild usr.bin/config
    939 
    940 Symptom:
    941 Fix:	Rebuild usr.bin/yacc
    942 
    943 Symptom:
    944 Fix:	Rebuild usr.bin/lex
    945 
    946 Symptom:
    947 Fix:	rm /usr/lib/libbfd.a
    948 
    949 Symptom:Obsolete intermediate files are used during compilation
    950 Fix:	Try the following sequence of commands in the directory in question.
    951 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    952 	(If you built the tree without "make obj" in the past, obsolete files
    953 	may remain.  The command tries to clean everything up)
    954 
    955 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
    956 	pointer type
    957 Fix:	Rebuild and install usr.bin/menuc
    958 
    959 Symptom:mklocale not found during build in share/locale/ctype
    960 Fix:	Build and install usr.bin/mklocale
    961 
    962 Symptom:undefined reference to `__assert13' or `__unsetenv13'
    963 Fix:    Rebuild and install lib/libc
    964 
    965 Symptom:usr.bin/config fails to build.
    966 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
    967 
    968 Symptom:undefined reference to `getprogname' or `setprogname'
    969 Fix:    Rebuild and install lib/libc
    970 
    971 Symptom:lint does not understand the '-X' option
    972 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
    973 
    974 Symptom:Update build fails in src/tools/gcc complaining that a variable
    975 	(e.g. CPPFLAGS) has changed since the previous run.
    976 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
    977 
    978 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
    979 	No such file or directory.
    980 Cause:	If a directory is created by mistake, then it is sometimes
    981 	deleted from the CVS repository using administrative commands
    982 	that bypass the normal cvs access controls.  If your cvs working tree
    983 	contains references to a directory that has been deleted on the
    984 	server in this way, then "cvs update" reports this error.
    985 Fix:	Recursively delete the affected directory from your working tree
    986 	and try the update again.
    987