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UPDATING revision 1.321
      1 $NetBSD: UPDATING,v 1.321 2021/09/18 03:05:19 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 20210917:
     23 	Changed MNT_ACLS to default to POSIX1e ACLs instead of NFSv4
     24 	ACLs, to be compatible with FreeBSD. If you are using NFSv4 ACLs
     25 	and have "acls" in /etc/fstab you'll need to change it to "nfs4acls".
     26 
     27 20210711:
     28 	Updated GMP sources may require cleaning in tools/gmp and/or in
     29 	external/lgpl3/gmp/lib, particularly if GCC itself does not build.
     30 
     31 20210417:
     32 	GCC 10 was enabled for several platforms.  If builds fail in either
     33 	tools/gcc or external/gpl/gcc, first try cleaning those objects and
     34 	removing the $DESTDIR/usr/include/g++ subdirectory.
     35 
     36 20201230:
     37 	lint1/ops.c is no longer autogenerated.  If this makes the build
     38 	fail, clean $OBJDIR/tools/*lint* and $OBJDIR/usr.bin/*xlint*.
     39 
     40 20201016:
     41 	MIPS kernel modules have been disabled until they work.  This will
     42 	turn up in extra files in the DESTDIR, which should be cleaned.
     43 
     44 20200925:
     45 	GNU MPC and MPFR have been updated.  At least MPFR needs cleaning
     46 	in both the tools and external dirs.
     47 
     48 20200912:
     49 	GCC 9 has arrived for Arm and x86 platforms, and will be coming
     50 	for several more, as will binutils 2.34.  Clean as required.
     51 
     52 20200907:
     53 	GCC 9 is coming, and binutils has been updated for MIPS.  This
     54 	probably requires cleaning the tools/binutils.
     55 
     56 20200811:
     57 	GCC updates may require cleaning the objdir.  This may occur
     58 	due to GCC 7.5 update, GCC 8.4 move to gcc.old, or the upcoming
     59 	GCC 9 upgrade.
     60 
     61 20200614:
     62 	blacklist* has been renamed to blocklist*. postinstall(8)
     63 	should handle the migration
     64 
     65 20200601:
     66 	Due to a mistake in LIBISPRIVATE handling, .so libraries were
     67 	created in the build directories and need cleaning.
     68 
     69 20200311:
     70 	GCC 8 ports will need cleaning in src/tools/gcc and
     71 	src/external/gpl3/gcc due to GCC 8.4 update.
     72 
     73 20191118:
     74 	More architectures were switched to gcc8:
     75 	    i386, ia64 powerpc64, sparc, sparc64, arm
     76 	The same comments as in 20191022 apply.
     77 
     78 20191112:
     79 	The LLVM update requires a clean rebuild for all architectures using
     80 	LLVM during the tools build phase (i386, amd64, aarch64).
     81 
     82 20191022:
     83 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
     84 	In-place ("expert mode", build.sh -E) builds are not supported
     85 	when going from a GCC 7 userland to GCC 8. Do a regular
     86 	build to a different DESTDIR (or preferably: build.sh -U) at least
     87 	once and install sets, or download comp.{tar.xz,tgz} from the
     88 	daily builds and install that before doing the next in-place build.
     89 
     90 20191001:
     91 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
     92 	old builds with GCC 7 output now uses GCC 8.  Clean this
     93 	directory, and also clean src/external/gpl3/gcc.
     94 
     95 20190903:
     96 	Files with names that coincide with existing files' names on
     97 	case-insensitive file systems were inadvertently committed, for
     98 	radeon GPU firmware.  We cannot mark these as obsolete for
     99 	postinstall to fix, so if you updated src since 2019-08-26, and
    100 	ran build.sh distribution or ran build.sh release, you must
    101 	manually delete the following files in your DESTDIR (which is
    102 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
    103 	them:
    104 
    105 		/libdata/firmware/radeon/bonaire_ce.bin
    106 		/libdata/firmware/radeon/bonaire_mc.bin
    107 		/libdata/firmware/radeon/bonaire_me.bin
    108 		/libdata/firmware/radeon/bonaire_mec.bin
    109 		/libdata/firmware/radeon/bonaire_pfp.bin
    110 		/libdata/firmware/radeon/bonaire_rlc.bin
    111 		/libdata/firmware/radeon/bonaire_sdma.bin
    112 		/libdata/firmware/radeon/bonaire_smc.bin
    113 		/libdata/firmware/radeon/bonaire_uvd.bin
    114 		/libdata/firmware/radeon/hainan_ce.bin
    115 		/libdata/firmware/radeon/hainan_mc.bin
    116 		/libdata/firmware/radeon/hainan_me.bin
    117 		/libdata/firmware/radeon/hainan_pfp.bin
    118 		/libdata/firmware/radeon/hainan_rlc.bin
    119 		/libdata/firmware/radeon/hainan_smc.bin
    120 		/libdata/firmware/radeon/hawaii_ce.bin
    121 		/libdata/firmware/radeon/hawaii_mc.bin
    122 		/libdata/firmware/radeon/hawaii_me.bin
    123 		/libdata/firmware/radeon/hawaii_mec.bin
    124 		/libdata/firmware/radeon/hawaii_pfp.bin
    125 		/libdata/firmware/radeon/hawaii_rlc.bin
    126 		/libdata/firmware/radeon/hawaii_sdma.bin
    127 		/libdata/firmware/radeon/hawaii_smc.bin
    128 		/libdata/firmware/radeon/kabini_ce.bin
    129 		/libdata/firmware/radeon/kabini_me.bin
    130 		/libdata/firmware/radeon/kabini_mec.bin
    131 		/libdata/firmware/radeon/kabini_pfp.bin
    132 		/libdata/firmware/radeon/kabini_rlc.bin
    133 		/libdata/firmware/radeon/kabini_sdma.bin
    134 		/libdata/firmware/radeon/kaveri_ce.bin
    135 		/libdata/firmware/radeon/kaveri_me.bin
    136 		/libdata/firmware/radeon/kaveri_mec.bin
    137 		/libdata/firmware/radeon/kaveri_mec2.bin
    138 		/libdata/firmware/radeon/kaveri_pfp.bin
    139 		/libdata/firmware/radeon/kaveri_rlc.bin
    140 		/libdata/firmware/radeon/kaveri_sdma.bin
    141 		/libdata/firmware/radeon/mullins_ce.bin
    142 		/libdata/firmware/radeon/mullins_me.bin
    143 		/libdata/firmware/radeon/mullins_mec.bin
    144 		/libdata/firmware/radeon/mullins_pfp.bin
    145 		/libdata/firmware/radeon/mullins_rlc.bin
    146 		/libdata/firmware/radeon/mullins_sdma.bin
    147 		/libdata/firmware/radeon/oland_ce.bin
    148 		/libdata/firmware/radeon/oland_mc.bin
    149 		/libdata/firmware/radeon/oland_me.bin
    150 		/libdata/firmware/radeon/oland_pfp.bin
    151 		/libdata/firmware/radeon/oland_rlc.bin
    152 		/libdata/firmware/radeon/oland_smc.bin
    153 		/libdata/firmware/radeon/pitcairn_ce.bin
    154 		/libdata/firmware/radeon/pitcairn_mc.bin
    155 		/libdata/firmware/radeon/pitcairn_me.bin
    156 		/libdata/firmware/radeon/pitcairn_pfp.bin
    157 		/libdata/firmware/radeon/pitcairn_rlc.bin
    158 		/libdata/firmware/radeon/pitcairn_smc.bin
    159 		/libdata/firmware/radeon/tahiti_ce.bin
    160 		/libdata/firmware/radeon/tahiti_mc.bin
    161 		/libdata/firmware/radeon/tahiti_me.bin
    162 		/libdata/firmware/radeon/tahiti_pfp.bin
    163 		/libdata/firmware/radeon/tahiti_rlc.bin
    164 		/libdata/firmware/radeon/tahiti_smc.bin
    165 		/libdata/firmware/radeon/verde_ce.bin
    166 		/libdata/firmware/radeon/verde_mc.bin
    167 		/libdata/firmware/radeon/verde_me.bin
    168 		/libdata/firmware/radeon/verde_pfp.bin
    169 		/libdata/firmware/radeon/verde_rlc.bin
    170 		/libdata/firmware/radeon/verde_smc.bin
    171 
    172 	We will re-import these radeon firmware images another way
    173 	later.
    174 
    175 20190727:
    176 	The uefi bootloader has gained tftp support and needs a clean
    177 	build. If you do update builds, manually clean its object
    178 	directory by something like:
    179 	cd sys/arch/i386/stand/efiboot && make clean
    180 
    181 20190723:
    182 	The jemalloc allocator in libc is now build without extended
    183 	debugging (for performance reasons). In update builds make sure
    184 	to rebuild it completly, by removing all affected object files,
    185 	including compat builds, something like:
    186 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    187 
    188 20190207:
    189 	GCC 7 switched for many ports.  Update builds are likely to fail.
    190 
    191 20180924:
    192 	A newer OpenSSL version has been imported. If you are doing
    193 	update builds, make sure to remove all old obj dirs, like:
    194 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    195 
    196 20180717:
    197 	On aarch64 int64_t and related types have changed from long long
    198 	to long. This requires recompiling all C++ binaries.
    199 
    200 20180713:
    201 	On amd64 and i386 static binaries are now build position
    202 	independend. This requires recompilation of all object
    203 	files used to create the crunched /rescue binary.
    204 	Clean the rescue directory in your obj directory before
    205 	doing an update build, otherwise linking will fail.
    206 
    207 20180414:
    208 	Existing binutils was migrated to binutils.old.  Manual
    209 	removal of tools/binutils objects directory may be required
    210 	to fix tools build failure.
    211 
    212 20180311:
    213 	bdftopcf was updated and may need cleaning in the
    214 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    215 	link errors.
    216 
    217 20180212:
    218 	between OpenSSL and GCC updates, many things may fail to build.
    219 	any failure that looks like GCC or openssl is best handled by
    220 	a clean destdir and objdir.  Full cleandir and destdir deletion
    221 	is recommended if build failures occur.
    222 
    223 20171225:
    224 	removal of the vadvise syscall requires manual removal of all
    225 	associated files from the libc build object directory (including
    226 	the .depend files) - a command like:
    227 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    228 	For architectures that support multiple "compat" binary targets,
    229 	you'll need to cleanup both the regular libc directory and the
    230 	compat ones (the above command will do that).
    231 
    232 20171010:
    233 	a change to the build structure of external/bsd/acpica/bin/iasl
    234 	means that its objdir (or *.d and .depend at least) might need
    235 	to be manually removed - or a build done once without -u.
    236 
    237 20170822:
    238 	a new version of GMP has been imported and probably
    239 	will break parts of builds related to themselves or GCC, both
    240 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    241 	and MPC objdirs or build once without -u.
    242 
    243 20170816:
    244 	a new version of MPFR and MPC have been imported and probably
    245 	will break parts of builds related to themselves or GCC, both
    246 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    247 	and MPC objdirs or build once without -u.
    248 
    249 20170402:
    250 	a new version of dhcpcd has been imported, which does not support
    251 	update builds from the previous version. Remove your
    252 	external/bsd/dhcpcd object dir or build once without -u.
    253 
    254 20170211:
    255 	a new terminfo database has been imported.
    256 	The structure of it has changed slightly from prior versions and
    257 	an updated tic tool is required.
    258 	If you build.sh, don't use -u
    259 
    260 20170207:
    261 	various arch dependent libc/exect.S files were removed
    262 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    263 	if it exists) or do a clean build.
    264 	(This is a bug in the make system, it should be corrected without
    265 	human intervention, but isn't.)
    266 
    267 20170104:
    268 	xinput build options have changed.
    269 	Remove the obj directory (external/mit/xorg/bin/xinput)
    270 	if you build.sh -u
    271 
    272 20170103:
    273 	a new version of flex has been imported.
    274 	Remove the file from obj (external/bsd/flex)
    275 	if you build.sh -u
    276 
    277 20161014:
    278 	a new version of OpenSSL has been imported.
    279 	Remove the files from obj (crypto/external/bsd/openssl) 
    280 	if you build.sh -u
    281 
    282 20161009:
    283 	a new version of dhcpcd has been imported with slightly changed
    284 	build infrastructure. When doing a build.sh -u this requires
    285 	pruning the external/bsd/dhcpcd objdir.
    286 
    287 20160914:
    288 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    289 	ports in using xorg-server 1.18. This requires a clean destdir
    290 	and a clean objdir.
    291 
    292 20160527:
    293 	i386 needs a full cleandir or objdir deletion because PIE has
    294 	been enabled. (see the amd64 entry two down for further info)
    295 
    296 20160418:
    297 	libedit needs manual removal of all autogenerated files since
    298 	some of them are not autogenerated anymore. Remember that there
    299 	might be two copies of libedit if your platform builds "compat".
    300 
    301 20160410:
    302 	amd64 needs full "make cleandir" or deletion of objdir now that
    303 	PIE has been enabled for amd64.  PIE, or position-independent
    304 	executables, means all code, including executables and not just
    305 	shared libraries, is position-independent and hence able to be
    306 	relocated by ASLR, address space layout randomization.
    307 
    308 	The change was made in Makefile variables for compiler and
    309 	linker flags, for which make(1) does not record dependencies,
    310 	hence it is unable to detect that all .o files need rebuilding.
    311 
    312 	Partial rebuilds with some modified source files will likely
    313 	fail when linking executables, since the linker refuses to mix
    314 	position-independent code with position-dependent code in
    315 	position-independent executables:
    316 
    317 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    318 
    319 20160401:
    320 	Ports switching to GCC 5.3 will need a full "make cleandir".
    321 	Some people have found that cleandir is not sufficient, so if
    322 	in doubt delete the entire object directory tree for gcc.
    323 
    324 20160306:
    325 	NetBSD's regexp implementation is now part of libnbcompat.
    326 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    327 	non-NetBSD hosts if linked with stale object files produced
    328 	while they included a non-NetBSD regex.h.
    329 	In any case, you should "make cleandir" at least these tools
    330 	before updating your toolchain.
    331 
    332 20160125:
    333 	Dtrace has been enabled by default on some architectures.
    334 	When doing an update build, make sure to clean the etc/mtree
    335 	object directory before starting the build - otherwise the
    336 	needed directories in destdir will not be created.
    337 	An easy way to do this is:
    338 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    339 
    340 20150818:
    341 	New acpica requires "make cleandir" in src/external/bsd/acpica
    342 	again.
    343 
    344 20150413:
    345 	New acpica requires "make cleandir" and reinstalling yacc
    346 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    347 	also "make cleandir" in /usr/src/external/bsd/acpica.
    348 
    349 20150404:
    350 	Lint changes require a full rebuild of the tool, so make
    351 	sure to build without -u option to build.sh, or manually
    352 	do a make cleandir in src/tools/lint1 and
    353 	src/usr.bin/xlint.
    354 
    355 20150310:
    356 	Improvements to openssl for arm mean that update builds of
    357 	the openssl libraries will fail. A make cleandir in
    358 	external/bsd/openssl/lib is needed
    359 
    360 20141026:
    361 	A mishap during the import of pppd may cause your corruption
    362 	in your cvs directory if you happened to do a cvs update
    363 	during a short period of time. To fix, just remove the
    364 	directory src/external/bsd/ppp/dist/pppd completely
    365 	and let cvs restore it on next update.
    366 
    367 20140721:
    368 	The src/external/mit/lua/src directory was accidentally created
    369 	and then deleted in the CVS repository.  If you get errors like
    370 
    371 	cvs [update aborted]: cannot open directory
    372 	/cvsroot/src/external/mit/lua/src: No such file or directory
    373 
    374 	then delete your local copy of that directory tree and try again.
    375 
    376 20140530:
    377 	ARM eABI switched to DWARF based exception handling. This requires
    378 	rebuilding all C++ code. It is strongly advised to do a clean build.
    379 
    380 20140131:
    381 	The new compiler_rt/libc integration moved a few things. It is strongly
    382 	advised to do a clean build. At least lib/libc, the compat version(s)
    383 	of libc, libkern, rump and the kernels need to be cleaned.
    384 
    385 20131227:
    386 	1. The new ntpd runs in a restricted mode to prevent amplification
    387 	   attacks. If you need ntpdc to work you need to explicitly enable
    388 	   mode7 in your config file. Make sure you put the necessary restrict
    389 	   statements to avoid being exposed.
    390 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    391 	   to make clean in libc
    392 
    393 20131129:
    394 	The GMP sources were updated, and builds will likely fail without
    395 	cleaning their build trees for both tools and in-tree, like below.
    396 
    397 20131128:
    398 	The MPC and MPFR sources were updated, and builds may require their
    399 	tools and in-tree directories cleaned for successful updates.
    400 
    401 20130605:
    402 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    403 	to IPSEC (and the older IPSEC version removed).
    404 
    405 20130605:
    406 	Previous freetype installations erroneously installed private
    407 	header files. If you are building against a non-empty $DESTDIR,
    408 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    409 
    410 20130531:
    411 	The xdm update may cause build failure due to xdm.man being
    412 	in the obj tree.  Make sure to ensure any like this:
    413 		nbmake: nbmake: don't know how to make xdm.man. Stop
    414 	is fixed by deleting the xdm.man in the obj tree.
    415 
    416 20130530:
    417 	Updates of many xsrc packages will leave old .pc files around.
    418 	Best to clean out the xsrc objdir entirely before rebuilds.
    419 
    420 20130301:
    421 	The removal of netiso requires manual removal of /usr/include/netiso
    422 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    423 
    424 20120726:
    425 	The update of OpenSSL requires cleaning both the OpenSSL build
    426 	directory and DESTDIR.  *Even non-update builds require cleaning
    427 	DESTDIR.* Builds done without taking these steps may fail, or in
    428 	some cases may succeed and install broken OpenSSL libraries that
    429 	cause third-party software to link incorrectly and/or crash.
    430 
    431 20120507:
    432 	The database schema for makemandb was changed.  You will
    433 	need to update the database using 'makemandb -f' or wait
    434 	for the next weekly run to fix it.
    435 
    436 20120319:
    437 	sys/conf/Makefile.kern.inc has been modified to adjust the
    438 	size of db_symtab automatically.  You need to update dbsym in
    439 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    440 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    441 	mk.conf.
    442 
    443 20120216:
    444 	Default for MKCATPAGES changed to NO.  Update builds will fail
    445 	unless DESTDIR is cleaned manually.  If you built between 20120207
    446 	and 20120216, daily and weekly could have created an unreadable
    447 	/var/db/man.db index for apropos.  Running makemandb -f or
    448 	the next run of weekly will fix it.
    449 
    450 20111227:
    451 	If you built between 20111225 and 20111227 you need to remove
    452 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    453 	bump has been reverted.
    454 
    455 20111125:
    456 	The "rnd" pseudodevice has been added to sys/conf/std, which
    457 	means it should no longer be explicitly listed in kernel
    458 	configuration files.  The line "pseudo-device rnd" should be
    459 	removed from any custom kernel config files users may have.
    460 
    461 20111119:
    462 	A problem with the datastructures used by the rndctl(8)
    463 	utility (pointers in datastructures in an array, making 32->64
    464 	bit compatibility very painful) has been fixed in a
    465 	non-backwards-compatible way.  If you replace your kernel,
    466 	replace your rndctl executable too.
    467 
    468 20111001:
    469 	the prop_*_send_syscall() functions from proplib(3) have been
    470 	changed and their new version is not backward compatible with the old
    471 	one.  So ensure that all consumers of these functions (currently:
    472 	quota2 code and its tests) are updated together with the new lib.
    473 
    474 20110817:
    475 	sparc has been changed to use GCC 4.5.3, so any objdir or
    476 	DESTDIR for them should be deleted before updating.
    477 
    478 20110806:
    479 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    480 	objdir or DESTDIR for them should be deleted before updating.
    481 
    482 20110805:
    483 	The update to GCC 4.5.3 requires a non-trivial portion of
    484 	the tree to be cleaned.  Best to delete both objdir and
    485 	DESTDIR before running this update.  So far, only the
    486 	sparc64, mips and powerpc platforms have changed.
    487 
    488 20110803:
    489 	The layout of external/public-domain/xz has changed.  To do an
    490 	update build you will have to remove the contents of the OBJDIR
    491 	for external/public-domain/xz/bin by hand as the xz entry there
    492 	is now a directory.
    493 
    494 20110410:
    495 	The configuration of src/tools/gcc has changed.  To do an
    496 	update build you have to clean both tools/binutils and
    497 	tools/gcc by hand.
    498 
    499 20110328:
    500 	Building the Xorg binary was moved into a subdirectory to fix
    501 	ordering issues with "make all".  It may be necessary to remove
    502 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    503 	if your update build fails, as the "Xorg" entry there is now a
    504 	directory.
    505 
    506 20110121:
    507 	Assembler files no longer use -traditional-cpp.  This can break
    508 	the build of individual parts of the tree.  This is handled
    509 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    510 	and re-run config(1) for any kernel configurations as needed.
    511 
    512 20101217:
    513 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    514 	by default.  It may be necessary to manually update passwd(5) and
    515 	group(5) in order to make the program work with existing setups.
    516 
    517 20101125:
    518 	The latest changes to setenv(3) dissallow setting environment
    519 	variables with names that contain '='.  Revision 1.18 of env.c
    520 	assumed that this was allowed.  Installing a new libc with an
    521 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    522 	break which affects the autoconf tests for dependency finding,
    523 	so building gcc will end up printing:
    524 	    checking dependency style of gcc... none
    525 	    configure: error: no usable dependency style found
    526 	Fix it by rebuilding and re-installing env.
    527 
    528 20101119:
    529 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    530 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    531 	have any build problems with xsrc, or problems with mismatched
    532 	versions between xorg-server and drivers.
    533 
    534 20100604:
    535 	The update of ATF to 0.9 causes old tests written in shell to fail
    536 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    537 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    538 	trees by hand.
    539 
    540 20100522:
    541 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    542 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    543 	build problems with xsrc.
    544 
    545 20100522:
    546 	private section of <ctype.h> was split, and now mklocale(1)
    547 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    548 
    549 20100520:
    550 	The location of the xkb compiled descriptions has changed.  Please
    551 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    552 
    553 20100222:
    554 	The shared objects file extension has been changed from .so to
    555 	.pico, in order to avoid conflicts with shared libraries names
    556 	libXX.so.  All now stale regular .so files can be removed from
    557 	your object directories.
    558 
    559 20100204:
    560 	The termcap database has been removed from the sources,
    561 	but has not been marked obsolete so it is not removed
    562 	from the system when upgrading.
    563 	As such, you will need to remove them from your object
    564 	and destination directories.
    565 
    566 20091101:
    567         After updating, it may be necessary to make the 'cleandir'
    568         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    569         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    570         src/tools/lex/ and src/usr.bin/lex/.
    571 
    572 20091001:
    573 	On amd64 you must rebuild tools (to get the new binutils)
    574 	before building a kernel, or the build fails on cpufunc.S.
    575 
    576 20091001:
    577 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    578 	symlink, failing the build.  Delete the link, and the subdir
    579 	it is in, and retry your build.
    580 
    581 20090718:
    582 	libc build changed so that strchr() provides the extra entry
    583 	point for index().  Update build of libc.a (and libc_pic.a)
    584 	may fail because the archive contains the unwanted index.o.
    585 	(Similarly for strrchr() and rindex().)
    586 
    587 20090709:
    588 	Native Xorg was upgraded again.  Builds will probably fail again
    589 	without a clean objdir, at least for src/external/mit/xorg.
    590 
    591 20090616:
    592 	Native Xorg was upgraded.  Builds will need a clean objdir for
    593 	src/external/mit/xorg.  Upgrading a system from sets will not
    594 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    595 	subdirectory has been changed into a file, and this needs to
    596 	be manually "rm -r"'ed before installing xbase.tgz.
    597 
    598 20090501:
    599 	Several new functions were added to string.h/libc, and this
    600 	can cause autoconf problems during the tool build for people
    601 	who fail to clean out their tools objects properly.  If you
    602 	note messages about stpcpy, stpncpy or strnlen accompanying a
    603 	failure during the tool build, clean out all your tools
    604 	objects and start again.
    605 
    606 20090325:
    607 	The i386 port was switched to i486 default toolchain.  This requires
    608 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    609 
    610 20090126:
    611 	The __posix_fadvise50 system call changed assembly stub type.  You
    612 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    613 	to avoid using the old assembly stub.
    614 
    615 20090202:
    616 	pkg_install now depends on the pkgdb cache for automatic conflict
    617 	detection.  It is recommended to rebuild the cache with
    618 	``pkg_admin rebuild''.
    619 
    620 20090110:
    621 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    622 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    623 	   This is needed even in the MODULAR kernel because there is
    624 	   conditionally compiled code in rtsock.c.
    625 	2. make sure build.sh completes and the binaries in a chroot work
    626 	   before installing.
    627 	3. If you don't use build.sh and you build directly to root, and
    628 	   your build breaks in the middle, don't despair.  Make sure headers
    629 	   are installed properly, and start building libraries first libc
    630 	   and libutil, install them and then continue building all the
    631 	   libraries in src/lib and src/gnu/lib and install them.  Once
    632 	   the new libraries are installed, you can restart the build.
    633 	4. If you compile packages and you notice link time warnings,
    634 	   rebuild the required packages to update their shared libraries.
    635 	   Any package you rebuild will require rebuilding all the packages
    636 	   that depend on it.
    637 	5. Next time you run pwd_mkdb with the new binary, the file
    638 	   will be upgraded and it will not be backwards compatible.
    639 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    640 	   lastlogx(5)) have been versioned, and there is a heuristic
    641 	   for utmp.  You are better off removing the old files after
    642 	   upgrading.  The automated clearing of /var/run during
    643 	   boot, and the automated rotating of files in /var/log by
    644 	   newsyslog(8), may mean that you do not have to remove the
    645 	   files manually.
    646 	7. The optional accounting file (/var/account/acct, see
    647 	   accton(8)) has not been versioned, and will need to be
    648 	   removed.  The automatic rotation of the accounting file by
    649 	   /etc/daily limits the bad consequences of failure to remove
    650 	   the file.
    651 	8. Application software that writes time_t to binary files on
    652 	   disk will break or need attention.  Most notably: if you are
    653 	   using PostgreSQL < 8.4, you need to dump your databases,
    654 	   rebuild PostgreSQL with the new time_t, then restore.
    655 
    656 20081219:
    657 	config(1) has been updated, and one of the files it creates -
    658 	swapnetbsd.o - has changed format.  You need to rebuild config
    659 	(done automatically by build.sh) and then you need to rerun
    660 	config on all kernel configuration files before rebuilding those
    661 	kernels.
    662 
    663 20081205:
    664 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    665 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    666 	set and will appear as extra files for MKX11=no update builds.
    667 
    668 20081122:
    669 	On i386, various kernel options(4) in GENERIC including
    670 	file systems have been disabled and moved into kernel modules.
    671 	Before trying a new GENERIC kernel, you have to prepare the
    672 	following files as well as a new GENERIC kernel:
    673 
    674 	- build and install kernel modules from src/sys/modules
    675 
    676 	- install the latest bootloader, which will load a module
    677 	  for the file system from which the kernel is loaded automatically
    678 
    679 	If you have to load your kernel from a file system which is not of
    680 	the same type as the root file system, you have to load the necessary
    681 	file system module manually on the boot prompt or in the boot.cfg file.
    682 
    683 20080827:
    684 	If you built and installed a libc from sources between
    685 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    686 	which results in false errors reported by lint(1).
    687 	Since this breaks the libc build itself, manual help is
    688 	needed -- lint must be disabled temporarily, e.g.:
    689 	  $ (cd lib/libc && make MKLINT=no dependall install)
    690 
    691 20080813:
    692 	MKDEBUG build was broken because the .depend files did not know
    693 	about .go files.  You need to remove all .depend files and rebuild.
    694 
    695 20080802:
    696 	A regression in binary compatibility for pthread_mutex_t has
    697 	been fixed.  Unfortunately, the price is breaking compatibility
    698 	for -current.
    699 
    700 	Threaded programs (using libpthread) and C++ programs (using
    701 	libstdc++) compiled after 20070907 and before 20080802 need to
    702 	be recompiled.
    703 
    704 	One way to find affected pkgsrc packages:
    705 
    706 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    707 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    708 
    709 20080731:
    710 	WAPBL (metadata journaling support) has been added, but at this
    711 	time isn't backwards compatible with pre-WAPBL aware kernels
    712 	and userland (fsck_ffs in particular).  Please make sure you
    713 	don't use a journaled filesystem with an older kernel/userland,
    714 	especially an uncleanly mounted journaled filesystem.  WAPBL
    715 	also requires the super block to be in the UFS2 format.  You
    716 	can use fsck_ffs -c 4 to update the superblock format.
    717 
    718 20080721:
    719 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    720 	isn't defined.
    721 
    722 20080531:
    723 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    724 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    725 	utility needs to be rebuilt and reinstalled as older binaries
    726 	won't work correctly.  The following sequence of commands:
    727 
    728 	  $ (cd sys/sys/ && nbmake-$arch includes)
    729 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    730 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    731 
    732 	leaves new drvctl utility in sbin/drvctl build directory.
    733 
    734 20080503:
    735 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    736 
    737 20080521:
    738 	For a while, unprivileged UPDATE builds would fail to
    739 	succeed at the checkflist stage, complaining that
    740 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    741 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    742 	If you already hit this problem, update the .mk file,
    743 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    744 
    745 20080303:
    746 	Linker warnings are now fatal if $WARNS>0.
    747 
    748 20080126:
    749 	The posix_fadvise system call has been changed from an assembly
    750 	stub, to a c file that calls an assembly stub.  You need to
    751 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    752 	avoid using the old assembly stub.
    753 
    754 20071209:
    755 	The acpiec(4) driver has been split into two attachments.  If you
    756 	get ACPI errors before the attachment, please update your kernel
    757 	configuration file appropriately or see GENERIC for more details.
    758 
    759 20071115:
    760 	The it(4) driver has been renamed to itesio(4) and the old port
    761 	argument specified in the kernel configuration file is not valid
    762 	anymore.  The itesio(4) driver now uses the Super I/O address port
    763 	rather than the EC address port.  Please update your kernel
    764 	configuration file appropriately or see GENERIC for more details.
    765 
    766 20071028:
    767 	The pccons(4) driver has been removed from the NetBSD/shark port.
    768 	You need to update any custom kernel configuration file you have
    769 	to remove any references to pccons (which includes removing the
    770 	now useless XSERVER option) and replace them with the correct
    771 	entries for the wscons driver.  See the GENERIC configuration file
    772 	for more details.
    773 
    774 20070913:
    775 	A latent bug in dhclient/dhcpd that caused it to be unable to
    776 	enumerate interfaces was fixed.  The bug began to cause
    777 	problems after 20070911 when the kernel's SIOCGIFCONF
    778 	implementation was repaired.  From 20070529 to 20070911 racoon
    779 	could not enumerate interfaces.  (These are noted because
    780 	normal kernel/userspace version matching hygiene is not
    781 	sufficient to avoid this problem.)  Ensure that both kernel
    782 	and userland are from after 20070913.
    783 
    784 20070703:
    785 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    786 	calls the target-specific strip program, and the logic to pass
    787 	down STRIP from make has been removed.  This requires a
    788 	re-installation of tools.
    789 
    790 20070422:
    791 	The way OS emulations lookup filenames inside the emulation root
    792 	has been changed.  Rather than modify the pathname (and copy back
    793 	to userspace) namei() and lookup() directly check the emulation
    794 	root.  One side effect is that absolute symlinks inside the emulated
    795 	root file system will be relative to that file system - unless they
    796 	start /../ this is useful when the emulated root is a real install
    797 	that has such links.
    798 	This might affect symlinks that have been added to reference outside
    799 	the emulated root.
    800 
    801 20070412:
    802 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    803 	instead.  See the GENERIC32_IP3x kernel configuration for an
    804 	example.
    805 
    806 20070319:
    807         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    808         on many platforms due to incorrect flags settings.  If you
    809         updated and built after about 20070315, do "nbmake-$arch
    810 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    811 	rebuild of object files that might have been built
    812 	incorrectly, and ensure that you have at least
    813 	src/lib/libc/Makefile 1.130.
    814 
    815 20070210:
    816         src/sys/sys/{sa.h,savar.h} were removed.
    817           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    818               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    819         will allow dependencies on those files to get get rebuilt
    820 
    821 20070209:
    822         The threading model was changed when the newlock2 branch
    823         was merged to NetBSD-current.  If you boot with a new
    824         kernel (version 4.99.10), then you also need a new pthread
    825         library (/usr/lib/libpthread.so.0.7).  If you boot with
    826         an old kernel, then you need the old pthread library
    827         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    828         the pthread library in sync, old threaded applications should
    829         continue to work with an old or new kernel.  Note that named(8)
    830 	is the only threaded application in the base system.
    831 
    832 20061214:
    833 	Following the move of string_to_flags() and flags_to_string()
    834 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    835 	will need to do a "make cleandir" in
    836 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    837 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    838 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    839 		as the installation images in distrib/
    840 	in order to excise stale references to the old stat_flags.h header
    841 	file in the ls sources -- stat_flags.h has been removed.
    842 
    843 20061108:
    844 	The configure script used in the src/tools/gcc compiler has been
    845 	changed to indicate that our libc has ssp support built-in and
    846 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    847 	make clean in src/tools/gcc first to rebuild the compiler.
    848 
    849 20061009:
    850 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    851 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    852 
    853 20060814:
    854 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    855 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    856 	kernel configuration for an example.  X servers from the last
    857 	few years should cope.
    858 
    859 20060703:
    860 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    861 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    862 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    863 
    864 20060627:
    865 	socket(2) has changed, and its system call has been versioned.
    866 	For userlands with the old version of socket(2), make sure that
    867 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    868 	errors will result.
    869 
    870 Hints for a more successful build:
    871 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    872     Use build.sh, but do not use its "expert mode":
    873 	This will automatically build the tools in the
    874 	   correct order, and it will keep the tools and the
    875 	   new build products from interfering with the running
    876 	   system.  This will allow you to ignore most of the
    877 	   other advice in this file.
    878     Build a new kernel first:
    879 	This makes sure that any new system calls or features
    880 	   expected by the new userland will be present.  This
    881 	   helps to avoid critical errors when upgrading.
    882     Use object directories:
    883 	This helps to keep stale object
    884 	   files from polluting the build if a Makefile "forgets"
    885 	   about one.  It also makes it easier to clean up after
    886 	   a build.  It's also necessary if you want to use the
    887 	   same source tree for multiple machines.
    888 	   To use object directories with build.sh:
    889 	    a) invoke build.sh with the "-M" or "-O" options.
    890 	   To use object directories without using build.sh:
    891 	    a) cd /usr/src ; make cleandir
    892 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    893 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    894 	    d) cd /usr/src ; make build
    895 	   Note that running "make obj" in a directory will create
    896 	   in obj.$MACHINE directory.
    897     Build to a DESTDIR:
    898 	This helps to keep old installed files (especially libraries)
    899 	   from interfering with the new build.
    900 	   To build to a DESTDIR with build.sh, use the "-D" option.
    901 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    902 	   environment variable before running make build.  It should be
    903 	   set to the pathname of an initially empty directory.
    904 	   Problems: if you do not use build.sh, you might need to
    905 		update critical utilities without using DESTDIR since
    906 		nothing is executed from what is installed in DESTDIR.
    907 		(See critical utils, below.)
    908     Build often:
    909 	This keeps critical utilities current enough to not choke
    910 	on any other part of the source tree that depends on up to
    911 	date functionality.  If you use build.sh, you should not have
    912 	this problem.
    913 
    914 What to do if things don't work:
    915 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    916 When things don't work there are usually a few things that commonly
    917 should be done.
    918     1)	make includes
    919 	This should be done automatically by make build.
    920     2)  cd share/mk && make install
    921 	Again, automatically done by make build.
    922 
    923 Failsafe rebuild of a small part of the tree:
    924 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    925 To make sure you rebuild something correctly you want to do
    926 something like the following:
    927     1)  Make sure the includes and .mk files are up to date.
    928     2)  Make sure any program used to build the particular
    929 	utility is up to date.  (yacc, lex, etc...)
    930     3)  cd ...path/to/util...
    931 	make cleandir
    932 	rm ...all obj directories...
    933 	make cleandir			# yes, again
    934 	make obj
    935 	make depend && make
    936 
    937 Failsafe rebuild of the entire tree:
    938 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    939 If you really want to make sure the source tree is clean and
    940 ready for a build try the following.  Note that sourcing /etc/mk.conf
    941 (a make(1) Makefile) in this manner is not right, and will not work
    942 for anyone who uses any make(1) features in /etc/mk.conf.
    943 
    944 ---cut here---
    945 #!/bin/sh
    946 . /etc/mk.conf
    947 
    948 if [ -z $NETBSDSRCDIR ] ; then
    949     NETBSDSRCDIR=/usr/src
    950 fi
    951 if [ \! -d $NETBSDSRCDIR ] ; then
    952     echo Unable to find sources
    953     exit 1
    954 fi
    955 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    956 
    957 if [ -z $BSDOBJDIR ] ; then
    958     BSDOBJDIR=/usr/obj
    959 fi
    960 if [ -d $BSDOBJDIR ] ; then
    961     rm -rf $BSDOBJDIR
    962 fi
    963 
    964 cd $NETBSDSRCDIR && make cleandir
    965 
    966 ---cut here---
    967 
    968 Critical utilities:
    969 ^^^^^^^^^^^^^^^^^^^
    970 	usr.bin/compile_et
    971 	usr.bin/make
    972 	usr.bin/yacc
    973 	usr.bin/lex
    974 	usr.bin/xlint
    975 	usr.bin/config
    976 
    977 Other problems and possible solutions:
    978 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    979 Symptom:Complaints involving a Makefile.
    980 Fix:	Rebuild usr.bin/make:
    981 	cd usr.bin/make && make && make install
    982 	Or, a failsafe method if that doesn't work:
    983 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    984 
    985 Fix:	Make sure .mk files are up to date.
    986 	cd share/mk && make install
    987 
    988 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    989 Fix:	Rebuild usr.bin/config
    990 
    991 Symptom:
    992 Fix:	Rebuild usr.bin/yacc
    993 
    994 Symptom:
    995 Fix:	Rebuild usr.bin/lex
    996 
    997 Symptom:
    998 Fix:	rm /usr/lib/libbfd.a
    999 
   1000 Symptom:Obsolete intermediate files are used during compilation
   1001 Fix:	Try the following sequence of commands in the directory in question.
   1002 	make cleandir; rm `make print-objdir`; make cleandir; make obj
   1003 	(If you built the tree without "make obj" in the past, obsolete files
   1004 	may remain.  The command tries to clean everything up)
   1005 
   1006 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
   1007 	pointer type
   1008 Fix:	Rebuild and install usr.bin/menuc
   1009 
   1010 Symptom:mklocale not found during build in share/locale/ctype
   1011 Fix:	Build and install usr.bin/mklocale
   1012 
   1013 Symptom:undefined reference to `__assert13' or `__unsetenv13'
   1014 Fix:    Rebuild and install lib/libc
   1015 
   1016 Symptom:usr.bin/config fails to build.
   1017 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
   1018 
   1019 Symptom:undefined reference to `getprogname' or `setprogname'
   1020 Fix:    Rebuild and install lib/libc
   1021 
   1022 Symptom:lint does not understand the '-X' option
   1023 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
   1024 
   1025 Symptom:Update build fails in src/tools/gcc complaining that a variable
   1026 	(e.g. CPPFLAGS) has changed since the previous run.
   1027 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
   1028 
   1029 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
   1030 	No such file or directory.
   1031 Cause:	If a directory is created by mistake, then it is sometimes
   1032 	deleted from the CVS repository using administrative commands
   1033 	that bypass the normal cvs access controls.  If your cvs working tree
   1034 	contains references to a directory that has been deleted on the
   1035 	server in this way, then "cvs update" reports this error.
   1036 Fix:	Recursively delete the affected directory from your working tree
   1037 	and try the update again.
   1038