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UPDATING revision 1.316
      1 $NetBSD: UPDATING,v 1.316 2020/10/17 07:41:25 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 20201016:
     23 	MIPS kernel modules have been disabled until they work.  This will
     24 	turn up in extra files in the DESTDIR, which should be cleaned.
     25 
     26 20200925:
     27 	GNU MPC and MPFR have been updated.  At least MPFR needs cleaning
     28 	in both the tools and external dirs.
     29 
     30 20200912:
     31 	GCC 9 has arrived for Arm and x86 platforms, and will be coming
     32 	for several more, as will binutils 2.34.  Clean as required.
     33 
     34 20200907:
     35 	GCC 9 is coming, and binutils has been updated for MIPS.  This
     36 	probably requires cleaning the tools/binutils.
     37 
     38 20200811:
     39 	GCC updates may require cleaning the objdir.  This may occur
     40 	due to GCC 7.5 update, GCC 8.4 move to gcc.old, or the upcoming
     41 	GCC 9 upgrade.
     42 
     43 20200614:
     44 	blacklist* has been renamed to blocklist*. postinstall(8)
     45 	should handle the migration
     46 
     47 20200601:
     48 	Due to a mistake in LIBISPRIVATE handling, .so libraries were
     49 	created in the build directories and need cleaning.
     50 
     51 20200311:
     52 	GCC 8 ports will need cleaning in src/tools/gcc and
     53 	src/external/gpl3/gcc due to GCC 8.4 update.
     54 
     55 20191118:
     56 	More architectures were switched to gcc8:
     57 	    i386, ia64 powerpc64, sparc, sparc64, arm
     58 	The same comments as in 20191022 apply.
     59 
     60 20191112:
     61 	The LLVM update requires a clean rebuild for all architectures using
     62 	LLVM during the tools build phase (i386, amd64, aarch64).
     63 
     64 20191022:
     65 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
     66 	In-place ("expert mode", build.sh -E) builds are not supported
     67 	when going from a GCC 7 userland to GCC 8. Do a regular
     68 	build to a different DESTDIR (or preferably: build.sh -U) at least
     69 	once and install sets, or download comp.{tar.xz,tgz} from the
     70 	daily builds and install that before doing the next in-place build.
     71 
     72 20191001:
     73 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
     74 	old builds with GCC 7 output now uses GCC 8.  Clean this
     75 	directory, and also clean src/external/gpl3/gcc.
     76 
     77 20190903:
     78 	Files with names that coincide with existing files' names on
     79 	case-insensitive file systems were inadvertently committed, for
     80 	radeon GPU firmware.  We cannot mark these as obsolete for
     81 	postinstall to fix, so if you updated src since 2019-08-26, and
     82 	ran build.sh distribution or ran build.sh release, you must
     83 	manually delete the following files in your DESTDIR (which is
     84 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
     85 	them:
     86 
     87 		/libdata/firmware/radeon/bonaire_ce.bin
     88 		/libdata/firmware/radeon/bonaire_mc.bin
     89 		/libdata/firmware/radeon/bonaire_me.bin
     90 		/libdata/firmware/radeon/bonaire_mec.bin
     91 		/libdata/firmware/radeon/bonaire_pfp.bin
     92 		/libdata/firmware/radeon/bonaire_rlc.bin
     93 		/libdata/firmware/radeon/bonaire_sdma.bin
     94 		/libdata/firmware/radeon/bonaire_smc.bin
     95 		/libdata/firmware/radeon/bonaire_uvd.bin
     96 		/libdata/firmware/radeon/hainan_ce.bin
     97 		/libdata/firmware/radeon/hainan_mc.bin
     98 		/libdata/firmware/radeon/hainan_me.bin
     99 		/libdata/firmware/radeon/hainan_pfp.bin
    100 		/libdata/firmware/radeon/hainan_rlc.bin
    101 		/libdata/firmware/radeon/hainan_smc.bin
    102 		/libdata/firmware/radeon/hawaii_ce.bin
    103 		/libdata/firmware/radeon/hawaii_mc.bin
    104 		/libdata/firmware/radeon/hawaii_me.bin
    105 		/libdata/firmware/radeon/hawaii_mec.bin
    106 		/libdata/firmware/radeon/hawaii_pfp.bin
    107 		/libdata/firmware/radeon/hawaii_rlc.bin
    108 		/libdata/firmware/radeon/hawaii_sdma.bin
    109 		/libdata/firmware/radeon/hawaii_smc.bin
    110 		/libdata/firmware/radeon/kabini_ce.bin
    111 		/libdata/firmware/radeon/kabini_me.bin
    112 		/libdata/firmware/radeon/kabini_mec.bin
    113 		/libdata/firmware/radeon/kabini_pfp.bin
    114 		/libdata/firmware/radeon/kabini_rlc.bin
    115 		/libdata/firmware/radeon/kabini_sdma.bin
    116 		/libdata/firmware/radeon/kaveri_ce.bin
    117 		/libdata/firmware/radeon/kaveri_me.bin
    118 		/libdata/firmware/radeon/kaveri_mec.bin
    119 		/libdata/firmware/radeon/kaveri_mec2.bin
    120 		/libdata/firmware/radeon/kaveri_pfp.bin
    121 		/libdata/firmware/radeon/kaveri_rlc.bin
    122 		/libdata/firmware/radeon/kaveri_sdma.bin
    123 		/libdata/firmware/radeon/mullins_ce.bin
    124 		/libdata/firmware/radeon/mullins_me.bin
    125 		/libdata/firmware/radeon/mullins_mec.bin
    126 		/libdata/firmware/radeon/mullins_pfp.bin
    127 		/libdata/firmware/radeon/mullins_rlc.bin
    128 		/libdata/firmware/radeon/mullins_sdma.bin
    129 		/libdata/firmware/radeon/oland_ce.bin
    130 		/libdata/firmware/radeon/oland_mc.bin
    131 		/libdata/firmware/radeon/oland_me.bin
    132 		/libdata/firmware/radeon/oland_pfp.bin
    133 		/libdata/firmware/radeon/oland_rlc.bin
    134 		/libdata/firmware/radeon/oland_smc.bin
    135 		/libdata/firmware/radeon/pitcairn_ce.bin
    136 		/libdata/firmware/radeon/pitcairn_mc.bin
    137 		/libdata/firmware/radeon/pitcairn_me.bin
    138 		/libdata/firmware/radeon/pitcairn_pfp.bin
    139 		/libdata/firmware/radeon/pitcairn_rlc.bin
    140 		/libdata/firmware/radeon/pitcairn_smc.bin
    141 		/libdata/firmware/radeon/tahiti_ce.bin
    142 		/libdata/firmware/radeon/tahiti_mc.bin
    143 		/libdata/firmware/radeon/tahiti_me.bin
    144 		/libdata/firmware/radeon/tahiti_pfp.bin
    145 		/libdata/firmware/radeon/tahiti_rlc.bin
    146 		/libdata/firmware/radeon/tahiti_smc.bin
    147 		/libdata/firmware/radeon/verde_ce.bin
    148 		/libdata/firmware/radeon/verde_mc.bin
    149 		/libdata/firmware/radeon/verde_me.bin
    150 		/libdata/firmware/radeon/verde_pfp.bin
    151 		/libdata/firmware/radeon/verde_rlc.bin
    152 		/libdata/firmware/radeon/verde_smc.bin
    153 
    154 	We will re-import these radeon firmware images another way
    155 	later.
    156 
    157 20190727:
    158 	The uefi bootloader has gained tftp support and needs a clean
    159 	build. If you do update builds, manually clean its object
    160 	directory by something like:
    161 	cd sys/arch/i386/stand/efiboot && make clean
    162 
    163 20190723:
    164 	The jemalloc allocator in libc is now build without extended
    165 	debugging (for performance reasons). In update builds make sure
    166 	to rebuild it completly, by removing all affected object files,
    167 	including compat builds, something like:
    168 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    169 
    170 20190207:
    171 	GCC 7 switched for many ports.  Update builds are likely to fail.
    172 
    173 20180924:
    174 	A newer OpenSSL version has been imported. If you are doing
    175 	update builds, make sure to remove all old obj dirs, like:
    176 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    177 
    178 20180717:
    179 	On aarch64 int64_t and related types have changed from long long
    180 	to long. This requires recompiling all C++ binaries.
    181 
    182 20180713:
    183 	On amd64 and i386 static binaries are now build position
    184 	independend. This requires recompilation of all object
    185 	files used to create the crunched /rescue binary.
    186 	Clean the rescue directory in your obj directory before
    187 	doing an update build, otherwise linking will fail.
    188 
    189 20180414:
    190 	Existing binutils was migrated to binutils.old.  Manual
    191 	removal of tools/binutils objects directory may be required
    192 	to fix tools build failure.
    193 
    194 20180311:
    195 	bdftopcf was updated and may need cleaning in the
    196 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    197 	link errors.
    198 
    199 20180212:
    200 	between OpenSSL and GCC updates, many things may fail to build.
    201 	any failure that looks like GCC or openssl is best handled by
    202 	a clean destdir and objdir.  Full cleandir and destdir deletion
    203 	is recommended if build failures occur.
    204 
    205 20171225:
    206 	removal of the vadvise syscall requires manual removal of all
    207 	associated files from the libc build object directory (including
    208 	the .depend files) - a command like:
    209 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    210 	For architectures that support multiple "compat" binary targets,
    211 	you'll need to cleanup both the regular libc directory and the
    212 	compat ones (the above command will do that).
    213 
    214 20171010:
    215 	a change to the build structure of external/bsd/acpica/bin/iasl
    216 	means that its objdir (or *.d and .depend at least) might need
    217 	to be manually removed - or a build done once without -u.
    218 
    219 20170822:
    220 	a new version of GMP has been imported and probably
    221 	will break parts of builds related to themselves or GCC, both
    222 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    223 	and MPC objdirs or build once without -u.
    224 
    225 20170816:
    226 	a new version of MPFR and MPC have been imported and probably
    227 	will break parts of builds related to themselves or GCC, both
    228 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    229 	and MPC objdirs or build once without -u.
    230 
    231 20170402:
    232 	a new version of dhcpcd has been imported, which does not support
    233 	update builds from the previous version. Remove your
    234 	external/bsd/dhcpcd object dir or build once without -u.
    235 
    236 20170211:
    237 	a new terminfo database has been imported.
    238 	The structure of it has changed slightly from prior versions and
    239 	an updated tic tool is required.
    240 	If you build.sh, don't use -u
    241 
    242 20170207:
    243 	various arch dependent libc/exect.S files were removed
    244 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    245 	if it exists) or do a clean build.
    246 	(This is a bug in the make system, it should be corrected without
    247 	human intervention, but isn't.)
    248 
    249 20170104:
    250 	xinput build options have changed.
    251 	Remove the obj directory (external/mit/xorg/bin/xinput)
    252 	if you build.sh -u
    253 
    254 20170103:
    255 	a new version of flex has been imported.
    256 	Remove the file from obj (external/bsd/flex)
    257 	if you build.sh -u
    258 
    259 20161014:
    260 	a new version of OpenSSL has been imported.
    261 	Remove the files from obj (crypto/external/bsd/openssl) 
    262 	if you build.sh -u
    263 
    264 20161009:
    265 	a new version of dhcpcd has been imported with slightly changed
    266 	build infrastructure. When doing a build.sh -u this requires
    267 	pruning the external/bsd/dhcpcd objdir.
    268 
    269 20160914:
    270 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    271 	ports in using xorg-server 1.18. This requires a clean destdir
    272 	and a clean objdir.
    273 
    274 20160527:
    275 	i386 needs a full cleandir or objdir deletion because PIE has
    276 	been enabled. (see the amd64 entry two down for further info)
    277 
    278 20160418:
    279 	libedit needs manual removal of all autogenerated files since
    280 	some of them are not autogenerated anymore. Remember that there
    281 	might be two copies of libedit if your platform builds "compat".
    282 
    283 20160410:
    284 	amd64 needs full "make cleandir" or deletion of objdir now that
    285 	PIE has been enabled for amd64.  PIE, or position-independent
    286 	executables, means all code, including executables and not just
    287 	shared libraries, is position-independent and hence able to be
    288 	relocated by ASLR, address space layout randomization.
    289 
    290 	The change was made in Makefile variables for compiler and
    291 	linker flags, for which make(1) does not record dependencies,
    292 	hence it is unable to detect that all .o files need rebuilding.
    293 
    294 	Partial rebuilds with some modified source files will likely
    295 	fail when linking executables, since the linker refuses to mix
    296 	position-independent code with position-dependent code in
    297 	position-independent executables:
    298 
    299 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    300 
    301 20160401:
    302 	Ports switching to GCC 5.3 will need a full "make cleandir".
    303 	Some people have found that cleandir is not sufficient, so if
    304 	in doubt delete the entire object directory tree for gcc.
    305 
    306 20160306:
    307 	NetBSD's regexp implementation is now part of libnbcompat.
    308 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    309 	non-NetBSD hosts if linked with stale object files produced
    310 	while they included a non-NetBSD regex.h.
    311 	In any case, you should "make cleandir" at least these tools
    312 	before updating your toolchain.
    313 
    314 20160125:
    315 	Dtrace has been enabled by default on some architectures.
    316 	When doing an update build, make sure to clean the etc/mtree
    317 	object directory before starting the build - otherwise the
    318 	needed directories in destdir will not be created.
    319 	An easy way to do this is:
    320 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    321 
    322 20150818:
    323 	New acpica requires "make cleandir" in src/external/bsd/acpica
    324 	again.
    325 
    326 20150413:
    327 	New acpica requires "make cleandir" and reinstalling yacc
    328 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    329 	also "make cleandir" in /usr/src/external/bsd/acpica.
    330 
    331 20150404:
    332 	Lint changes require a full rebuild of the tool, so make
    333 	sure to build without -u option to build.sh, or manually
    334 	do a make cleandir in src/tools/lint1 and
    335 	src/usr.bin/xlint.
    336 
    337 20150310:
    338 	Improvements to openssl for arm mean that update builds of
    339 	the openssl libraries will fail. A make cleandir in
    340 	external/bsd/openssl/lib is needed
    341 
    342 20141026:
    343 	A mishap during the import of pppd may cause your corruption
    344 	in your cvs directory if you happened to do a cvs update
    345 	during a short period of time. To fix, just remove the
    346 	directory src/external/bsd/ppp/dist/pppd completely
    347 	and let cvs restore it on next update.
    348 
    349 20140721:
    350 	The src/external/mit/lua/src directory was accidentally created
    351 	and then deleted in the CVS repository.  If you get errors like
    352 
    353 	cvs [update aborted]: cannot open directory
    354 	/cvsroot/src/external/mit/lua/src: No such file or directory
    355 
    356 	then delete your local copy of that directory tree and try again.
    357 
    358 20140530:
    359 	ARM eABI switched to DWARF based exception handling. This requires
    360 	rebuilding all C++ code. It is strongly advised to do a clean build.
    361 
    362 20140131:
    363 	The new compiler_rt/libc integration moved a few things. It is strongly
    364 	advised to do a clean build. At least lib/libc, the compat version(s)
    365 	of libc, libkern, rump and the kernels need to be cleaned.
    366 
    367 20131227:
    368 	1. The new ntpd runs in a restricted mode to prevent amplification
    369 	   attacks. If you need ntpdc to work you need to explicitly enable
    370 	   mode7 in your config file. Make sure you put the necessary restrict
    371 	   statements to avoid being exposed.
    372 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    373 	   to make clean in libc
    374 
    375 20131129:
    376 	The GMP sources were updated, and builds will likely fail without
    377 	cleaning their build trees for both tools and in-tree, like below.
    378 
    379 20131128:
    380 	The MPC and MPFR sources were updated, and builds may require their
    381 	tools and in-tree directories cleaned for successful updates.
    382 
    383 20130605:
    384 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    385 	to IPSEC (and the older IPSEC version removed).
    386 
    387 20130605:
    388 	Previous freetype installations eroneously installed private
    389 	header files. If you are building against a non-empty $DESTDIR,
    390 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    391 
    392 20130531:
    393 	The xdm update may cause build failure due to xdm.man being
    394 	in the obj tree.  Make sure to ensure any like this:
    395 		nbmake: nbmake: don't know how to make xdm.man. Stop
    396 	is fixed by deleting the xdm.man in the obj tree.
    397 
    398 20130530:
    399 	Updates of many xsrc packages will leave old .pc files around.
    400 	Best to clean out the xsrc objdir entirely before rebuilds.
    401 
    402 20130301:
    403 	The removal of netiso requires manual removal of /usr/include/netiso
    404 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    405 
    406 20120726:
    407 	The update of OpenSSL requires cleaning both the OpenSSL build
    408 	directory and DESTDIR.  *Even non-update builds require cleaning
    409 	DESTDIR.* Builds done without taking these steps may fail, or in
    410 	some cases may succeed and install broken OpenSSL libraries that
    411 	cause third-party software to link incorrectly and/or crash.
    412 
    413 20120507:
    414 	The database schema for makemandb was changed.  You will
    415 	need to update the database using 'makemandb -f' or wait
    416 	for the next weekly run to fix it.
    417 
    418 20120319:
    419 	sys/conf/Makefile.kern.inc has been modified to adjust the
    420 	size of db_symtab automatically.  You need to update dbsym in
    421 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    422 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    423 	mk.conf.
    424 
    425 20120216:
    426 	Default for MKCATPAGES changed to NO.  Update builds will fail
    427 	unless DESTDIR is cleaned manually.  If you built between 20120207
    428 	and 20120216, daily and weekly could have created an unreadable
    429 	/var/db/man.db index for apropos.  Running makemandb -f or
    430 	the next run of weekly will fix it.
    431 
    432 20111227:
    433 	If you built between 20111225 and 20111227 you need to remove
    434 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    435 	bump has been reverted.
    436 
    437 20111125:
    438 	The "rnd" pseudodevice has been added to sys/conf/std, which
    439 	means it should no longer be explicitly listed in kernel
    440 	configuration files.  The line "pseudo-device rnd" should be
    441 	removed from any custom kernel config files users may have.
    442 
    443 20111119:
    444 	A problem with the datastructures used by the rndctl(8)
    445 	utility (pointers in datastructures in an array, making 32->64
    446 	bit compatibility very painful) has been fixed in a
    447 	non-backwards-compatible way.  If you replace your kernel,
    448 	replace your rndctl executable too.
    449 
    450 20111001:
    451 	the prop_*_send_syscall() functions from proplib(3) have been
    452 	changed and their new version is not backward compatible with the old
    453 	one.  So ensure that all consumers of these functions (currently:
    454 	quota2 code and its tests) are updated together with the new lib.
    455 
    456 20110817:
    457 	sparc has been changed to use GCC 4.5.3, so any objdir or
    458 	DESTDIR for them should be deleted before updating.
    459 
    460 20110806:
    461 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    462 	objdir or DESTDIR for them should be deleted before updating.
    463 
    464 20110805:
    465 	The update to GCC 4.5.3 requires a non-trivial portion of
    466 	the tree to be cleaned.  Best to delete both objdir and
    467 	DESTDIR before running this update.  So far, only the
    468 	sparc64, mips and powerpc platforms have changed.
    469 
    470 20110803:
    471 	The layout of external/public-domain/xz has changed.  To do an
    472 	update build you will have to remove the contents of the OBJDIR
    473 	for external/public-domain/xz/bin by hand as the xz entry there
    474 	is now a directory.
    475 
    476 20110410:
    477 	The configuration of src/tools/gcc has changed.  To do an
    478 	update build you have to clean both tools/binutils and
    479 	tools/gcc by hand.
    480 
    481 20110328:
    482 	Building the Xorg binary was moved into a subdirectory to fix
    483 	ordering issues with "make all".  It may be necessary to remove
    484 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    485 	if your update build fails, as the "Xorg" entry there is now a
    486 	directory.
    487 
    488 20110121:
    489 	Assembler files no longer use -traditional-cpp.  This can break
    490 	the build of individual parts of the tree.  This is handled
    491 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    492 	and re-run config(1) for any kernel configurations as needed.
    493 
    494 20101217:
    495 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    496 	by default.  It may be necessary to manually update passwd(5) and
    497 	group(5) in order to make the program work with existing setups.
    498 
    499 20101125:
    500 	The latest changes to setenv(3) dissallow setting environment
    501 	variables with names that contain '='.  Revision 1.18 of env.c
    502 	assumed that this was allowed.  Installing a new libc with an
    503 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    504 	break which affects the autoconf tests for dependency finding,
    505 	so building gcc will end up printing:
    506 	    checking dependency style of gcc... none
    507 	    configure: error: no usable dependency style found
    508 	Fix it by rebuilding and re-installing env.
    509 
    510 20101119:
    511 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    512 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    513 	have any build problems with xsrc, or problems with mismatched
    514 	versions between xorg-server and drivers.
    515 
    516 20100604:
    517 	The update of ATF to 0.9 causes old tests written in shell to fail
    518 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    519 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    520 	trees by hand.
    521 
    522 20100522:
    523 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    524 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    525 	build problems with xsrc.
    526 
    527 20100522:
    528 	private section of <ctype.h> was splitted, and now mklocale(1)
    529 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    530 
    531 20100520:
    532 	The location of the xkb compiled descriptions has changed.  Please
    533 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    534 
    535 20100222:
    536 	The shared objects file extension has been changed from .so to
    537 	.pico, in order to avoid conflicts with shared libraries names
    538 	libXX.so.  All now stale regular .so files can be removed from
    539 	your object directories.
    540 
    541 20100204:
    542 	The termcap database has been removed from the sources,
    543 	but has not been marked obsolete so it is not removed
    544 	from the system when upgrading.
    545 	As such, you will need to remove them from your object
    546 	and destination directories.
    547 
    548 20091101:
    549         After updating, it may be necessary to make the 'cleandir'
    550         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    551         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    552         src/tools/lex/ and src/usr.bin/lex/.
    553 
    554 20091001:
    555 	On amd64 you must rebuild tools (to get the new binutils)
    556 	before building a kernel, or the build fails on cpufunc.S.
    557 
    558 20091001:
    559 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    560 	symlink, failing the build.  Delete the link, and the subdir
    561 	it is in, and retry your build.
    562 
    563 20090718:
    564 	libc build changed so that strchr() provides the extra entry
    565 	point for index().  Update build of libc.a (and libc_pic.a)
    566 	may fail because the archive contains the unwanted index.o.
    567 	(Similarly for strrchr() and rindex().)
    568 
    569 20090709:
    570 	Native Xorg was upgraded again.  Builds will probably fail again
    571 	without a clean objdir, at least for src/external/mit/xorg.
    572 
    573 20090616:
    574 	Native Xorg was upgraded.  Builds will need a clean objdir for
    575 	src/external/mit/xorg.  Upgrading a system from sets will not
    576 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    577 	subdirectory has been changed into a file, and this needs to
    578 	be manually "rm -r"'ed before installing xbase.tgz.
    579 
    580 20090501:
    581 	Several new functions were added to string.h/libc, and this
    582 	can cause autoconf problems during the tool build for people
    583 	who fail to clean out their tools objects properly.  If you
    584 	note messages about stpcpy, stpncpy or strnlen accompanying a
    585 	failure during the tool build, clean out all your tools
    586 	objects and start again.
    587 
    588 20090325:
    589 	The i386 port was switched to i486 default toolchain.  This requires
    590 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    591 
    592 20090126:
    593 	The __posix_fadvise50 system call changed assembly stub type.  You
    594 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    595 	to avoid using the old assembly stub.
    596 
    597 20090202:
    598 	pkg_install now depends on the pkgdb cache for automatic conflict
    599 	detection.  It is recommented to rebuild the cache with
    600 	``pkg_admin rebuild''.
    601 
    602 20090110:
    603 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    604 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    605 	   This is needed even in the MODULAR kernel because there is
    606 	   conditionally compiled code in rtsock.c.
    607 	2. make sure build.sh completes and the binaries in a chroot work
    608 	   before installing.
    609 	3. If you don't use build.sh and you build directly to root, and
    610 	   your build breaks in the middle, don't despair.  Make sure headers
    611 	   are installed properly, and start building libraries first libc
    612 	   and libutil, install them and then continue building all the
    613 	   libraries in src/lib and src/gnu/lib and install them.  Once
    614 	   the new libraries are installed, you can restart the build.
    615 	4. If you compile packages and you notice link time warnings,
    616 	   rebuild the required packages to update their shared libraries.
    617 	   Any package you rebuild will require rebuilding all the packages
    618 	   that depend on it.
    619 	5. Next time you run pwd_mkdb with the new binary, the file
    620 	   will be upgraded and it will not be backwards compatible.
    621 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    622 	   lastlogx(5)) have been versioned, and there is a heuristic
    623 	   for utmp.  You are better off removing the old files after
    624 	   upgrading.  The automated clearing of /var/run during
    625 	   boot, and the automated rotating of files in /var/log by
    626 	   newsyslog(8), may mean that you do not have to remove the
    627 	   files manually.
    628 	7. The optional accounting file (/var/account/acct, see
    629 	   accton(8)) has not been versioned, and will need to be
    630 	   removed.  The automatic rotation of the accounting file by
    631 	   /etc/daily limits the bad consequences of failure to remove
    632 	   the file.
    633 	8. Application software that writes time_t to binary files on
    634 	   disk will break or need attention.  Most notably: if you are
    635 	   using PostgreSQL < 8.4, you need to dump your databases,
    636 	   rebuild PostgreSQL with the new time_t, then restore.
    637 
    638 20081219:
    639 	config(1) has been updated, and one of the files it creates -
    640 	swapnetbsd.o - has changed format.  You need to rebuild config
    641 	(done automatically by build.sh) and then you need to rerun
    642 	config on all kernel configuration files before rebuilding those
    643 	kernels.
    644 
    645 20081205:
    646 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    647 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    648 	set and will appear as extra files for MKX11=no update builds.
    649 
    650 20081122:
    651 	On i386, various kernel options(4) in GENERIC including
    652 	file systems have been disabled and moved into kernel modules.
    653 	Before trying a new GENERIC kernel, you have to prepare the
    654 	following files as well as a new GENERIC kernel:
    655 
    656 	- build and install kernel modules from src/sys/modules
    657 
    658 	- install the latest bootloader, which will load a module
    659 	  for the file system from which the kernel is loaded automatically
    660 
    661 	If you have to load your kernel from a file system which is not of
    662 	the same type as the root file system, you have to load the necessary
    663 	file system module manually on the boot prompt or in the boot.cfg file.
    664 
    665 20080827:
    666 	If you built and installed a libc from sources between
    667 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    668 	which results in false errors reported by lint(1).
    669 	Since this breaks the libc build itself, manual help is
    670 	needed -- lint must be disabled temporarily, e.g.:
    671 	  $ (cd lib/libc && make MKLINT=no dependall install)
    672 
    673 20080813:
    674 	MKDEBUG build was broken because the .depend files did not know
    675 	about .go files.  You need to remove all .depend files and rebuild.
    676 
    677 20080802:
    678 	A regression in binary compatibility for pthread_mutex_t has
    679 	been fixed.  Unfortunately, the price is breaking compatibility
    680 	for -current.
    681 
    682 	Threaded programs (using libpthread) and C++ programs (using
    683 	libstdc++) compiled after 20070907 and before 20080802 need to
    684 	be recompiled.
    685 
    686 	One way to find affected pkgsrc packages:
    687 
    688 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    689 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    690 
    691 20080731:
    692 	WAPBL (metadata journaling support) has been added, but at this
    693 	time isn't backwards compatible with pre-WAPBL aware kernels
    694 	and userland (fsck_ffs in particular).  Please make sure you
    695 	don't use a journaled filesystem with an older kernel/userland,
    696 	especially an uncleanly mounted journaled filesystem.  WAPBL
    697 	also requires the super block to be in the UFS2 format.  You
    698 	can use fsck_ffs -c 4 to update the superblock format.
    699 
    700 20080721:
    701 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    702 	isn't defined.
    703 
    704 20080531:
    705 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    706 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    707 	utility needs to be rebuilt and reinstalled as older binaries
    708 	won't work correctly.  The following sequence of commands:
    709 
    710 	  $ (cd sys/sys/ && nbmake-$arch includes)
    711 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    712 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    713 
    714 	leaves new drvctl utility in sbin/drvctl build directory.
    715 
    716 20080503:
    717 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    718 
    719 20080521:
    720 	For a while, unprivileged UPDATE builds would fail to
    721 	succeed at the checkflist stage, complaining that
    722 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    723 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    724 	If you already hit this problem, update the .mk file,
    725 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    726 
    727 20080303:
    728 	Linker warnings are now fatal if $WARNS>0.
    729 
    730 20080126:
    731 	The posix_fadvise system call has been changed from an assembly
    732 	stub, to a c file that calls an assembly stub.  You need to
    733 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    734 	avoid using the old assembly stub.
    735 
    736 20071209:
    737 	The acpiec(4) driver has been split into two attachments.  If you
    738 	get ACPI errors before the attachment, please update your kernel
    739 	configuration file appropriately or see GENERIC for more details.
    740 
    741 20071115:
    742 	The it(4) driver has been renamed to itesio(4) and the old port
    743 	argument specified in the kernel configuration file is not valid
    744 	anymore.  The itesio(4) driver now uses the Super I/O address port
    745 	rather than the EC address port.  Please update your kernel
    746 	configuration file appropriately or see GENERIC for more details.
    747 
    748 20071028:
    749 	The pccons(4) driver has been removed from the NetBSD/shark port.
    750 	You need to update any custom kernel configuration file you have
    751 	to remove any references to pccons (which includes removing the
    752 	now useless XSERVER option) and replace them with the correct
    753 	entries for the wscons driver.  See the GENERIC configuration file
    754 	for more details.
    755 
    756 20070913:
    757 	A latent bug in dhclient/dhcpd that caused it to be unable to
    758 	enumerate interfaces was fixed.  The bug began to cause
    759 	problems after 20070911 when the kernel's SIOCGIFCONF
    760 	implementation was repaired.  From 20070529 to 20070911 racoon
    761 	could not enumerate interfaces.  (These are noted because
    762 	normal kernel/userspace version matching hygiene is not
    763 	sufficient to avoid this problem.)  Ensure that both kernel
    764 	and userland are from after 20070913.
    765 
    766 20070703:
    767 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    768 	calls the target-specific strip program, and the logic to pass
    769 	down STRIP from make has been removed.  This requires a
    770 	re-installation of tools.
    771 
    772 20070422:
    773 	The way OS emulations lookup filenames inside the emulation root
    774 	has been changed.  Rather than modify the pathname (and copy back
    775 	to userspace) namei() and lookup() directly check the emulation
    776 	root.  One side effect is that absolute symlinks inside the emulated
    777 	root file system will be relative to that file system - unless they
    778 	start /../ this is useful when the emulated root is a real install
    779 	that has such links.
    780 	This might affect symlinks that have been added to reference outside
    781 	the emulated root.
    782 
    783 20070412:
    784 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    785 	instead.  See the GENERIC32_IP3x kernel configuration for an
    786 	example.
    787 
    788 20070319:
    789         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    790         on many platforms due to incorrect flags settings.  If you
    791         updated and built after about 20070315, do "nbmake-$arch
    792 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    793 	rebuild of object files that might have been built
    794 	incorrectly, and ensure that you have at least
    795 	src/lib/libc/Makefile 1.130.
    796 
    797 20070210:
    798         src/sys/sys/{sa.h,savar.h} were removed.
    799           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    800               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    801         will allow dependencies on those files to get get rebuilt
    802 
    803 20070209:
    804         The threading model was changed when the newlock2 branch
    805         was merged to NetBSD-current.  If you boot with a new
    806         kernel (version 4.99.10), then you also need a new pthread
    807         library (/usr/lib/libpthread.so.0.7).  If you boot with
    808         an old kernel, then you need the old pthread library
    809         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    810         the pthread library in sync, old threaded applications should
    811         continue to work with an old or new kernel.  Note that named(8)
    812 	is the only threaded application in the base system.
    813 
    814 20061214:
    815 	Following the move of string_to_flags() and flags_to_string()
    816 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    817 	will need to do a "make cleandir" in
    818 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    819 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    820 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    821 		as the installation images in distrib/
    822 	in order to excise stale references to the old stat_flags.h header
    823 	file in the ls sources -- stat_flags.h has been removed.
    824 
    825 20061108:
    826 	The configure script used in the src/tools/gcc compiler has been
    827 	changed to indicate that our libc has ssp support built-in and
    828 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    829 	make clean in src/tools/gcc first to rebuild the compiler.
    830 
    831 20061009:
    832 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    833 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    834 
    835 20060814:
    836 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    837 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    838 	kernel configuration for an example.  X servers from the last
    839 	few years should cope.
    840 
    841 20060703:
    842 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    843 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    844 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    845 
    846 20060627:
    847 	socket(2) has changed, and its system call has been versioned.
    848 	For userlands with the old version of socket(2), make sure that
    849 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    850 	errors will result.
    851 
    852 Hints for a more successful build:
    853 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    854     Use build.sh, but do not use its "expert mode":
    855 	This will automatically build the tools in the
    856 	   correct order, and it will keep the tools and the
    857 	   new build products from interfering with the running
    858 	   system.  This will allow you to ignore most of the
    859 	   other advice in this file.
    860     Build a new kernel first:
    861 	This makes sure that any new system calls or features
    862 	   expected by the new userland will be present.  This
    863 	   helps to avoid critical errors when upgrading.
    864     Use object directories:
    865 	This helps to keep stale object
    866 	   files from polluting the build if a Makefile "forgets"
    867 	   about one.  It also makes it easier to clean up after
    868 	   a build.  It's also necessary if you want to use the
    869 	   same source tree for multiple machines.
    870 	   To use object directories with build.sh:
    871 	    a) invoke build.sh with the "-M" or "-O" options.
    872 	   To use object directories without using build.sh:
    873 	    a) cd /usr/src ; make cleandir
    874 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    875 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    876 	    d) cd /usr/src ; make build
    877 	   Note that running "make obj" in a directory will create
    878 	   in obj.$MACHINE directory.
    879     Build to a DESTDIR:
    880 	This helps to keep old installed files (especially libraries)
    881 	   from interfering with the new build.
    882 	   To build to a DESTDIR with build.sh, use the "-D" option.
    883 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    884 	   environment variable before running make build.  It should be
    885 	   set to the pathname of an initially empty directory.
    886 	   Problems: if you do not use build.sh, you might need to
    887 		update critical utilities without using DESTDIR since
    888 		nothing is executed from what is installed in DESTDIR.
    889 		(See critical utils, below.)
    890     Build often:
    891 	This keeps critical utilities current enough to not choke
    892 	on any other part of the source tree that depends on up to
    893 	date functionality.  If you use build.sh, you should not have
    894 	this problem.
    895 
    896 What to do if things don't work:
    897 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    898 When things don't work there are usually a few things that commonly
    899 should be done.
    900     1)	make includes
    901 	This should be done automatically by make build.
    902     2)  cd share/mk && make install
    903 	Again, automatically done by make build.
    904 
    905 Failsafe rebuild of a small part of the tree:
    906 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    907 To make sure you rebuild something correctly you want to do
    908 something like the following:
    909     1)  Make sure the includes and .mk files are up to date.
    910     2)  Make sure any program used to build the particular
    911 	utility is up to date.  (yacc, lex, etc...)
    912     3)  cd ...path/to/util...
    913 	make cleandir
    914 	rm ...all obj directories...
    915 	make cleandir			# yes, again
    916 	make obj
    917 	make depend && make
    918 
    919 Failsafe rebuild of the entire tree:
    920 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    921 If you really want to make sure the source tree is clean and
    922 ready for a build try the following.  Note that sourcing /etc/mk.conf
    923 (a make(1) Makefile) in this manner is not right, and will not work
    924 for anyone who uses any make(1) features in /etc/mk.conf.
    925 
    926 ---cut here---
    927 #!/bin/sh
    928 . /etc/mk.conf
    929 
    930 if [ -z $NETBSDSRCDIR ] ; then
    931     NETBSDSRCDIR=/usr/src
    932 fi
    933 if [ \! -d $NETBSDSRCDIR ] ; then
    934     echo Unable to find sources
    935     exit 1
    936 fi
    937 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    938 
    939 if [ -z $BSDOBJDIR ] ; then
    940     BSDOBJDIR=/usr/obj
    941 fi
    942 if [ -d $BSDOBJDIR ] ; then
    943     rm -rf $BSDOBJDIR
    944 fi
    945 
    946 cd $NETBSDSRCDIR && make cleandir
    947 
    948 ---cut here---
    949 
    950 Critical utilities:
    951 ^^^^^^^^^^^^^^^^^^^
    952 	usr.bin/compile_et
    953 	usr.bin/make
    954 	usr.bin/yacc
    955 	usr.bin/lex
    956 	usr.bin/xlint
    957 	usr.bin/config
    958 
    959 Other problems and possible solutions:
    960 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    961 Symptom:Complaints involving a Makefile.
    962 Fix:	Rebuild usr.bin/make:
    963 	cd usr.bin/make && make && make install
    964 	Or, a failsafe method if that doesn't work:
    965 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    966 
    967 Fix:	Make sure .mk files are up to date.
    968 	cd share/mk && make install
    969 
    970 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    971 Fix:	Rebuild usr.bin/config
    972 
    973 Symptom:
    974 Fix:	Rebuild usr.bin/yacc
    975 
    976 Symptom:
    977 Fix:	Rebuild usr.bin/lex
    978 
    979 Symptom:
    980 Fix:	rm /usr/lib/libbfd.a
    981 
    982 Symptom:Obsolete intermediate files are used during compilation
    983 Fix:	Try the following sequence of commands in the directory in question.
    984 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    985 	(If you built the tree without "make obj" in the past, obsolete files
    986 	may remain.  The command tries to clean everything up)
    987 
    988 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
    989 	pointer type
    990 Fix:	Rebuild and install usr.bin/menuc
    991 
    992 Symptom:mklocale not found during build in share/locale/ctype
    993 Fix:	Build and install usr.bin/mklocale
    994 
    995 Symptom:undefined reference to `__assert13' or `__unsetenv13'
    996 Fix:    Rebuild and install lib/libc
    997 
    998 Symptom:usr.bin/config fails to build.
    999 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
   1000 
   1001 Symptom:undefined reference to `getprogname' or `setprogname'
   1002 Fix:    Rebuild and install lib/libc
   1003 
   1004 Symptom:lint does not understand the '-X' option
   1005 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
   1006 
   1007 Symptom:Update build fails in src/tools/gcc complaining that a variable
   1008 	(e.g. CPPFLAGS) has changed since the previous run.
   1009 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
   1010 
   1011 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
   1012 	No such file or directory.
   1013 Cause:	If a directory is created by mistake, then it is sometimes
   1014 	deleted from the CVS repository using administrative commands
   1015 	that bypass the normal cvs access controls.  If your cvs working tree
   1016 	contains references to a directory that has been deleted on the
   1017 	server in this way, then "cvs update" reports this error.
   1018 Fix:	Recursively delete the affected directory from your working tree
   1019 	and try the update again.
   1020