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UPDATING revision 1.305
      1 $NetBSD: UPDATING,v 1.305 2019/11/13 09:59:02 martin 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 20191112:
     23 	The LLVM update requires a clean rebuild for all architectures using
     24 	LLVM during the tools build phase (i386, amd64, aarch64).
     25 
     26 20191022:
     27 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
     28 	In-place ("expert mode", build.sh -E) builds are not supported
     29 	when going from a GCC 7 userland to GCC 8. Do a regular
     30 	build to a different DESTDIR (or preferably: build.sh -U) at least
     31 	once and install sets, or download compt.{tar.xz,tgz} from the
     32 	daily builds and install that before doing the next in-place build.
     33 
     34 20191001:
     35 
     36 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
     37 	old builds with GCC 7 output now uses GCC 8.  Clean this
     38 	directory, and also clean src/external/gpl3/gcc.
     39 
     40 20190903:
     41 
     42 	File with names that coincide with existing files' names on
     43 	case-insensitive file systems were inadvertently committed, for
     44 	radeon GPU firmware.  We cannot mark these as obsolete for
     45 	postinstall to fix, so if you updated src since 2019-08-26, and
     46 	ran build.sh distribution or ran build.sh release, you must
     47 	manually delete the following files in your DESTDIR (which is
     48 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
     49 	them:
     50 
     51 		/libdata/firmware/radeon/bonaire_ce.bin
     52 		/libdata/firmware/radeon/bonaire_mc.bin
     53 		/libdata/firmware/radeon/bonaire_me.bin
     54 		/libdata/firmware/radeon/bonaire_mec.bin
     55 		/libdata/firmware/radeon/bonaire_pfp.bin
     56 		/libdata/firmware/radeon/bonaire_rlc.bin
     57 		/libdata/firmware/radeon/bonaire_sdma.bin
     58 		/libdata/firmware/radeon/bonaire_smc.bin
     59 		/libdata/firmware/radeon/bonaire_uvd.bin
     60 		/libdata/firmware/radeon/hainan_ce.bin
     61 		/libdata/firmware/radeon/hainan_mc.bin
     62 		/libdata/firmware/radeon/hainan_me.bin
     63 		/libdata/firmware/radeon/hainan_pfp.bin
     64 		/libdata/firmware/radeon/hainan_rlc.bin
     65 		/libdata/firmware/radeon/hainan_smc.bin
     66 		/libdata/firmware/radeon/hawaii_ce.bin
     67 		/libdata/firmware/radeon/hawaii_mc.bin
     68 		/libdata/firmware/radeon/hawaii_me.bin
     69 		/libdata/firmware/radeon/hawaii_mec.bin
     70 		/libdata/firmware/radeon/hawaii_pfp.bin
     71 		/libdata/firmware/radeon/hawaii_rlc.bin
     72 		/libdata/firmware/radeon/hawaii_sdma.bin
     73 		/libdata/firmware/radeon/hawaii_smc.bin
     74 		/libdata/firmware/radeon/kabini_ce.bin
     75 		/libdata/firmware/radeon/kabini_me.bin
     76 		/libdata/firmware/radeon/kabini_mec.bin
     77 		/libdata/firmware/radeon/kabini_pfp.bin
     78 		/libdata/firmware/radeon/kabini_rlc.bin
     79 		/libdata/firmware/radeon/kabini_sdma.bin
     80 		/libdata/firmware/radeon/kaveri_ce.bin
     81 		/libdata/firmware/radeon/kaveri_me.bin
     82 		/libdata/firmware/radeon/kaveri_mec.bin
     83 		/libdata/firmware/radeon/kaveri_mec2.bin
     84 		/libdata/firmware/radeon/kaveri_pfp.bin
     85 		/libdata/firmware/radeon/kaveri_rlc.bin
     86 		/libdata/firmware/radeon/kaveri_sdma.bin
     87 		/libdata/firmware/radeon/mullins_ce.bin
     88 		/libdata/firmware/radeon/mullins_me.bin
     89 		/libdata/firmware/radeon/mullins_mec.bin
     90 		/libdata/firmware/radeon/mullins_pfp.bin
     91 		/libdata/firmware/radeon/mullins_rlc.bin
     92 		/libdata/firmware/radeon/mullins_sdma.bin
     93 		/libdata/firmware/radeon/oland_ce.bin
     94 		/libdata/firmware/radeon/oland_mc.bin
     95 		/libdata/firmware/radeon/oland_me.bin
     96 		/libdata/firmware/radeon/oland_pfp.bin
     97 		/libdata/firmware/radeon/oland_rlc.bin
     98 		/libdata/firmware/radeon/oland_smc.bin
     99 		/libdata/firmware/radeon/pitcairn_ce.bin
    100 		/libdata/firmware/radeon/pitcairn_mc.bin
    101 		/libdata/firmware/radeon/pitcairn_me.bin
    102 		/libdata/firmware/radeon/pitcairn_pfp.bin
    103 		/libdata/firmware/radeon/pitcairn_rlc.bin
    104 		/libdata/firmware/radeon/pitcairn_smc.bin
    105 		/libdata/firmware/radeon/tahiti_ce.bin
    106 		/libdata/firmware/radeon/tahiti_mc.bin
    107 		/libdata/firmware/radeon/tahiti_me.bin
    108 		/libdata/firmware/radeon/tahiti_pfp.bin
    109 		/libdata/firmware/radeon/tahiti_rlc.bin
    110 		/libdata/firmware/radeon/tahiti_smc.bin
    111 		/libdata/firmware/radeon/verde_ce.bin
    112 		/libdata/firmware/radeon/verde_mc.bin
    113 		/libdata/firmware/radeon/verde_me.bin
    114 		/libdata/firmware/radeon/verde_pfp.bin
    115 		/libdata/firmware/radeon/verde_rlc.bin
    116 		/libdata/firmware/radeon/verde_smc.bin
    117 
    118 	We will re-import these radeon firmware images another way
    119 	later.
    120 
    121 20190727:
    122 	The uefi bootloader has gained tftp support and needs a clean
    123 	build. If you do update builds, manually clean its object
    124 	directory by something like:
    125 	cd sys/arch/i386/stand/efiboot && make clean
    126 
    127 20190723:
    128 	The jemalloc allocator in libc is now build without extended
    129 	debugging (for performance reasons). In update builds make sure
    130 	to rebuild it completly, by removing all affected object files,
    131 	including compat builds, something like:
    132 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    133 
    134 20190207:
    135 	GCC 7 switched for many ports.  Update builds are likely to fail.
    136 
    137 20180924:
    138 	A newer OpenSSL version has been imported. If you are doing
    139 	update builds, make sure to remove all old obj dirs, like:
    140 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    141 
    142 20180717:
    143 	On aarch64 int64_t and related types have changed from long long
    144 	to long. This requires recompiling all C++ binaries.
    145 
    146 20180713:
    147 	On amd64 and i386 static binaries are now build position
    148 	independend. This requires recompilation of all object
    149 	files used to create the crunched /rescue binary.
    150 	Clean the rescue directory in your obj directory before
    151 	doing an update build, otherwise linking will fail.
    152 
    153 20180414:
    154 	Existing binutils was migrated to binutils.old.  Manual
    155 	removal of tools/binutils objects directory may be required
    156 	to fix tools build failure.
    157 
    158 20180311:
    159 	bdftopcf was updated and may need cleaning in the
    160 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    161 	link errors.
    162 
    163 20180212:
    164 	between OpenSSL and GCC updates, many things may fail to build.
    165 	any failure that looks like GCC or openssl is best handled by
    166 	a clean destdir and objdir.  Full cleandir and destdir deletion
    167 	is recommended if build failures occur.
    168 
    169 20171225:
    170 	removal of the vadvise syscall requires manual removal of all
    171 	associated files from the libc build object directory (including
    172 	the .depend files) - a command like:
    173 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    174 	For architectures that support multiple "compat" binary targets,
    175 	you'll need to cleanup both the regular libc directory and the
    176 	compat ones (the above command will do that).
    177 
    178 20171010:
    179 	a change to the build structure of external/bsd/acpica/bin/iasl
    180 	means that its objdir (or *.d and .depend at least) might need
    181 	to be manually removed - or a build done once without -u.
    182 
    183 20170822:
    184 	a new version of GMP has been imported and probably
    185 	will break parts of builds related to themselves or GCC, both
    186 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    187 	and MPC objdirs or build once without -u.
    188 
    189 20170816:
    190 	a new version of MPFR and MPC have been imported and probably
    191 	will break parts of builds related to themselves or GCC, both
    192 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    193 	and MPC objdirs or build once without -u.
    194 
    195 20170402:
    196 	a new version of dhcpcd has been imported, which does not support
    197 	update builds from the previous version. Remove your
    198 	external/bsd/dhcpcd object dir or build once without -u.
    199 
    200 20170211:
    201 	a new terminfo database has been imported.
    202 	The structure of it has changed slightly from prior versions and
    203 	an updated tic tool is required.
    204 	If you build.sh, don't use -u
    205 
    206 20170207:
    207 	various arch dependent libc/exect.S files were removed
    208 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    209 	if it exists) or do a clean build.
    210 	(This is a bug in the make system, it should be corrected without
    211 	human intervention, but isn't.)
    212 
    213 20170104:
    214 	xinput build options have changed.
    215 	Remove the obj directory (external/mit/xorg/bin/xinput)
    216 	if you build.sh -u
    217 
    218 20170103:
    219 	a new version of flex has been imported.
    220 	Remove the file from obj (external/bsd/flex)
    221 	if you build.sh -u
    222 
    223 20161014:
    224 	a new version of OpenSSL has been imported.
    225 	Remove the files from obj (crypto/external/bsd/openssl) 
    226 	if you build.sh -u
    227 
    228 20161009:
    229 	a new version of dhcpcd has been imported with slightly changed
    230 	build infrastructure. When doing a build.sh -u this requires
    231 	pruning the external/bsd/dhcpcd objdir.
    232 
    233 20160914:
    234 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    235 	ports in using xorg-server 1.18. This requires a clean destdir
    236 	and a clean objdir.
    237 
    238 20160527:
    239 	i386 needs a full cleandir or objdir deletion because PIE has
    240 	been enabled. (see the amd64 entry two down for further info)
    241 
    242 20160418:
    243 	libedit needs manual removal of all autogenerated files since
    244 	some of them are not autogenerated anymore. Remember that there
    245 	might be two copies of libedit if your platform builds "compat".
    246 
    247 20160410:
    248 	amd64 needs full "make cleandir" or deletion of objdir now that
    249 	PIE has been enabled for amd64.  PIE, or position-independent
    250 	executables, means all code, including executables and not just
    251 	shared libraries, is position-independent and hence able to be
    252 	relocated by ASLR, address space layout randomization.
    253 
    254 	The change was made in Makefile variables for compiler and
    255 	linker flags, for which make(1) does not record dependencies,
    256 	hence it is unable to detect that all .o files need rebuilding.
    257 
    258 	Partial rebuilds with some modified source files will likely
    259 	fail when linking executables, since the linker refuses to mix
    260 	position-independent code with position-dependent code in
    261 	position-independent executables:
    262 
    263 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    264 
    265 20160401:
    266 	Ports switching to GCC 5.3 will need a full "make cleandir".
    267 	Some people have found that cleandir is not sufficient, so if
    268 	in doubt delete the entire object directory tree for gcc.
    269 
    270 20160306:
    271 	NetBSD's regexp implementation is now part of libnbcompat.
    272 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    273 	non-NetBSD hosts if linked with stale object files produced
    274 	while they included a non-NetBSD regex.h.
    275 	In any case, you should "make cleandir" at least these tools
    276 	before updating your toolchain.
    277 
    278 20160125:
    279 	Dtrace has been enabled by default on some architectures.
    280 	When doing an update build, make sure to clean the etc/mtree
    281 	object directory before starting the build - otherwise the
    282 	needed directories in destdir will not be created.
    283 	An easy way to do this is:
    284 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    285 
    286 20150818:
    287 	New acpica requires "make cleandir" in src/external/bsd/acpica
    288 	again.
    289 
    290 20150413:
    291 	New acpica requires "make cleandir" and reinstalling yacc
    292 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    293 	also "make cleandir" in /usr/src/external/bsd/acpica.
    294 
    295 20150404:
    296 	Lint changes require a full rebuild of the tool, so make
    297 	sure to build without -u option to build.sh, or manually
    298 	do a make cleandir in src/tools/lint1 and
    299 	src/usr.bin/xlint.
    300 
    301 20150310:
    302 	Improvements to openssl for arm mean that update builds of
    303 	the openssl libraries will fail. A make cleandir in
    304 	external/bsd/openssl/lib is needed
    305 
    306 20141026:
    307 	A mishap during the import of pppd may cause your corruption
    308 	in your cvs directory if you happened to do a cvs update
    309 	during a short period of time. To fix, just remove the
    310 	directory src/external/bsd/ppp/dist/pppd completely
    311 	and let cvs restore it on next update.
    312 
    313 20140721:
    314 	The src/external/mit/lua/src directory was accidentally created
    315 	and then deleted in the CVS repository.  If you get errors like
    316 
    317 	cvs [update aborted]: cannot open directory
    318 	/cvsroot/src/external/mit/lua/src: No such file or directory
    319 
    320 	then delete your local copy of that directory tree and try again.
    321 
    322 20140530:
    323 	ARM eABI switched to DWARF based exception handling. This requires
    324 	rebuilding all C++ code. It is strongly advised to do a clean build.
    325 
    326 20140131:
    327 	The new compiler_rt/libc integration moved a few things. It is strongly
    328 	advised to do a clean build. At least lib/libc, the compat version(s)
    329 	of libc, libkern, rump and the kernels need to be cleaned.
    330 
    331 20131227:
    332 	1. The new ntpd runs in a restricted mode to prevent amplification
    333 	   attacks. If you need ntpdc to work you need to explicitly enable
    334 	   mode7 in your config file. Make sure you put the necessary restrict
    335 	   statements to avoid being exposed.
    336 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    337 	   to make clean in libc
    338 
    339 20131129:
    340 	The GMP sources were updated, and builds will likely fail without
    341 	cleaning their build trees for both tools and in-tree, like below.
    342 
    343 20131128:
    344 	The MPC and MPFR sources were updated, and builds may require their
    345 	tools and in-tree directories cleaned for successful updates.
    346 
    347 20130605:
    348 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    349 	to IPSEC (and the older IPSEC version removed).
    350 
    351 20130605:
    352 	Previous freetype installations eroneously installed private
    353 	header files. If you are building against a non-empty $DESTDIR,
    354 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    355 
    356 20130531:
    357 	The xdm update may cause build failure due to xdm.man being
    358 	in the obj tree.  Make sure to ensure any like this:
    359 		nbmake: nbmake: don't know how to make xdm.man. Stop
    360 	is fixed by deleting the xdm.man in the obj tree.
    361 
    362 20130530:
    363 	Updates of many xsrc packages will leave old .pc files around.
    364 	Best to clean out the xsrc objdir entirely before rebuilds.
    365 
    366 20130301:
    367 	The removal of netiso requires manual removal of /usr/include/netiso
    368 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    369 
    370 20120726:
    371 	The update of OpenSSL requires cleaning both the OpenSSL build
    372 	directory and DESTDIR.  *Even non-update builds require cleaning
    373 	DESTDIR.* Builds done without taking these steps may fail, or in
    374 	some cases may succeed and install broken OpenSSL libraries that
    375 	cause third-party software to link incorrectly and/or crash.
    376 
    377 20120507:
    378 	The database schema for makemandb was changed.  You will
    379 	need to update the database using 'makemandb -f' or wait
    380 	for the next weekly run to fix it.
    381 
    382 20120319:
    383 	sys/conf/Makefile.kern.inc has been modified to adjust the
    384 	size of db_symtab automatically.  You need to update dbsym in
    385 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    386 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    387 	mk.conf.
    388 
    389 20120216:
    390 	Default for MKCATPAGES changed to NO.  Update builds will fail
    391 	unless DESTDIR is cleaned manually.  If you built between 20120207
    392 	and 20120216, daily and weekly could have created an unreadable
    393 	/var/db/man.db index for apropos.  Running makemandb -f or
    394 	the next run of weekly will fix it.
    395 
    396 20111227:
    397 	If you built between 20111225 and 20111227 you need to remove
    398 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    399 	bump has been reverted.
    400 
    401 20111125:
    402 	The "rnd" pseudodevice has been added to sys/conf/std, which
    403 	means it should no longer be explicitly listed in kernel
    404 	configuration files.  The line "pseudo-device rnd" should be
    405 	removed from any custom kernel config files users may have.
    406 
    407 20111119:
    408 	A problem with the datastructures used by the rndctl(8)
    409 	utility (pointers in datastructures in an array, making 32->64
    410 	bit compatibility very painful) has been fixed in a
    411 	non-backwards-compatible way.  If you replace your kernel,
    412 	replace your rndctl executable too.
    413 
    414 20111001:
    415 	the prop_*_send_syscall() functions from proplib(3) have been
    416 	changed and their new version is not backward compatible with the old
    417 	one.  So ensure that all consumers of these functions (currently:
    418 	quota2 code and its tests) are updated together with the new lib.
    419 
    420 20110817:
    421 	sparc has been changed to use GCC 4.5.3, so any objdir or
    422 	DESTDIR for them should be deleted before updating.
    423 
    424 20110806:
    425 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    426 	objdir or DESTDIR for them should be deleted before updating.
    427 
    428 20110805:
    429 	The update to GCC 4.5.3 requires a non-trivial portion of
    430 	the tree to be cleaned.  Best to delete both objdir and
    431 	DESTDIR before running this update.  So far, only the
    432 	sparc64, mips and powerpc platforms have changed.
    433 
    434 20110803:
    435 	The layout of external/public-domain/xz has changed.  To do an
    436 	update build you will have to remove the contents of the OBJDIR
    437 	for external/public-domain/xz/bin by hand as the xz entry there
    438 	is now a directory.
    439 
    440 20110410:
    441 	The configuration of src/tools/gcc has changed.  To do an
    442 	update build you have to clean both tools/binutils and
    443 	tools/gcc by hand.
    444 
    445 20110328:
    446 	Building the Xorg binary was moved into a subdirectory to fix
    447 	ordering issues with "make all".  It may be necessary to remove
    448 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    449 	if your update build fails, as the "Xorg" entry there is now a
    450 	directory.
    451 
    452 20110121:
    453 	Assembler files no longer use -traditional-cpp.  This can break
    454 	the build of individual parts of the tree.  This is handled
    455 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    456 	and re-run config(1) for any kernel configurations as needed.
    457 
    458 20101217:
    459 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    460 	by default.  It may be necessary to manually update passwd(5) and
    461 	group(5) in order to make the program work with existing setups.
    462 
    463 20101125:
    464 	The latest changes to setenv(3) dissallow setting environment
    465 	variables with names that contain '='.  Revision 1.18 of env.c
    466 	assumed that this was allowed.  Installing a new libc with an
    467 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    468 	break which affects the autoconf tests for dependency finding,
    469 	so building gcc will end up printing:
    470 	    checking dependency style of gcc... none
    471 	    configure: error: no usable dependency style found
    472 	Fix it by rebuilding and re-installing env.
    473 
    474 20101119:
    475 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    476 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    477 	have any build problems with xsrc, or problems with mismatched
    478 	versions between xorg-server and drivers.
    479 
    480 20100604:
    481 	The update of ATF to 0.9 causes old tests written in shell to fail
    482 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    483 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    484 	trees by hand.
    485 
    486 20100522:
    487 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    488 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    489 	build problems with xsrc.
    490 
    491 20100522:
    492 	private section of <ctype.h> was splitted, and now mklocale(1)
    493 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    494 
    495 20100520:
    496 	The location of the xkb compiled descriptions has changed.  Please
    497 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    498 
    499 20100222:
    500 	The shared objects file extension has been changed from .so to
    501 	.pico, in order to avoid conflicts with shared libraries names
    502 	libXX.so.  All now stale regular .so files can be removed from
    503 	your object directories.
    504 
    505 20100204:
    506 	The termcap database has been removed from the sources,
    507 	but has not been marked obsolete so it is not removed
    508 	from the system when upgrading.
    509 	As such, you will need to remove them from your object
    510 	and destination directories.
    511 
    512 20091101:
    513         After updating, it may be necessary to make the 'cleandir'
    514         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    515         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    516         src/tools/lex/ and src/usr.bin/lex/.
    517 
    518 20091001:
    519 	On amd64 you must rebuild tools (to get the new binutils)
    520 	before building a kernel, or the build fails on cpufunc.S.
    521 
    522 20091001:
    523 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    524 	symlink, failing the build.  Delete the link, and the subdir
    525 	it is in, and retry your build.
    526 
    527 20090718:
    528 	libc build changed so that strchr() provides the extra entry
    529 	point for index().  Update build of libc.a (and libc_pic.a)
    530 	may fail because the archive contains the unwanted index.o.
    531 	(Similarly for strrchr() and rindex().)
    532 
    533 20090709:
    534 	Native Xorg was upgraded again.  Builds will probably fail again
    535 	without a clean objdir, at least for src/external/mit/xorg.
    536 
    537 20090616:
    538 	Native Xorg was upgraded.  Builds will need a clean objdir for
    539 	src/external/mit/xorg.  Upgrading a system from sets will not
    540 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    541 	subdirectory has been changed into a file, and this needs to
    542 	be manually "rm -r"'ed before installing xbase.tgz.
    543 
    544 20090501:
    545 	Several new functions were added to string.h/libc, and this
    546 	can cause autoconf problems during the tool build for people
    547 	who fail to clean out their tools objects properly.  If you
    548 	note messages about stpcpy, stpncpy or strnlen accompanying a
    549 	failure during the tool build, clean out all your tools
    550 	objects and start again.
    551 
    552 20090325:
    553 	The i386 port was switched to i486 default toolchain.  This requires
    554 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    555 
    556 20090126:
    557 	The __posix_fadvise50 system call changed assembly stub type.  You
    558 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    559 	to avoid using the old assembly stub.
    560 
    561 20090202:
    562 	pkg_install now depends on the pkgdb cache for automatic conflict
    563 	detection.  It is recommented to rebuild the cache with
    564 	``pkg_admin rebuild''.
    565 
    566 20090110:
    567 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    568 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    569 	   This is needed even in the MODULAR kernel because there is
    570 	   conditionally compiled code in rtsock.c.
    571 	2. make sure build.sh completes and the binaries in a chroot work
    572 	   before installing.
    573 	3. If you don't use build.sh and you build directly to root, and
    574 	   your build breaks in the middle, don't despair.  Make sure headers
    575 	   are installed properly, and start building libraries first libc
    576 	   and libutil, install them and then continue building all the
    577 	   libraries in src/lib and src/gnu/lib and install them.  Once
    578 	   the new libraries are installed, you can restart the build.
    579 	4. If you compile packages and you notice link time warnings,
    580 	   rebuild the required packages to update their shared libraries.
    581 	   Any package you rebuild will require rebuilding all the packages
    582 	   that depend on it.
    583 	5. Next time you run pwd_mkdb with the new binary, the file
    584 	   will be upgraded and it will not be backwards compatible.
    585 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    586 	   lastlogx(5)) have been versioned, and there is a heuristic
    587 	   for utmp.  You are better off removing the old files after
    588 	   upgrading.  The automated clearing of /var/run during
    589 	   boot, and the automated rotating of files in /var/log by
    590 	   newsyslog(8), may mean that you do not have to remove the
    591 	   files manually.
    592 	7. The optional accounting file (/var/account/acct, see
    593 	   accton(8)) has not been versioned, and will need to be
    594 	   removed.  The automatic rotation of the accounting file by
    595 	   /etc/daily limits the bad consequences of failure to remove
    596 	   the file.
    597 	8. Application software that writes time_t to binary files on
    598 	   disk will break or need attention.  Most notably: if you are
    599 	   using PostgreSQL < 8.4, you need to dump your databases,
    600 	   rebuild PostgreSQL with the new time_t, then restore.
    601 
    602 20081219:
    603 	config(1) has been updated, and one of the files it creates -
    604 	swapnetbsd.o - has changed format.  You need to rebuild config
    605 	(done automatically by build.sh) and then you need to rerun
    606 	config on all kernel configuration files before rebuilding those
    607 	kernels.
    608 
    609 20081205:
    610 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    611 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    612 	set and will appear as extra files for MKX11=no update builds.
    613 
    614 20081122:
    615 	On i386, various kernel options(4) in GENERIC including
    616 	file systems have been disabled and moved into kernel modules.
    617 	Before trying a new GENERIC kernel, you have to prepare the
    618 	following files as well as a new GENERIC kernel:
    619 
    620 	- build and install kernel modules from src/sys/modules
    621 
    622 	- install the latest bootloader, which will load a module
    623 	  for the file system from which the kernel is loaded automatically
    624 
    625 	If you have to load your kernel from a file system which is not of
    626 	the same type as the root file system, you have to load the necessary
    627 	file system module manually on the boot prompt or in the boot.cfg file.
    628 
    629 20080827:
    630 	If you built and installed a libc from sources between
    631 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    632 	which results in false errors reported by lint(1).
    633 	Since this breaks the libc build itself, manual help is
    634 	needed -- lint must be disabled temporarily, e.g.:
    635 	  $ (cd lib/libc && make MKLINT=no dependall install)
    636 
    637 20080813:
    638 	MKDEBUG build was broken because the .depend files did not know
    639 	about .go files.  You need to remove all .depend files and rebuild.
    640 
    641 20080802:
    642 	A regression in binary compatibility for pthread_mutex_t has
    643 	been fixed.  Unfortunately, the price is breaking compatibility
    644 	for -current.
    645 
    646 	Threaded programs (using libpthread) and C++ programs (using
    647 	libstdc++) compiled after 20070907 and before 20080802 need to
    648 	be recompiled.
    649 
    650 	One way to find affected pkgsrc packages:
    651 
    652 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    653 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    654 
    655 20080731:
    656 	WAPBL (metadata journaling support) has been added, but at this
    657 	time isn't backwards compatible with pre-WAPBL aware kernels
    658 	and userland (fsck_ffs in particular).  Please make sure you
    659 	don't use a journaled filesystem with an older kernel/userland,
    660 	especially an uncleanly mounted journaled filesystem.  WAPBL
    661 	also requires the super block to be in the UFS2 format.  You
    662 	can use fsck_ffs -c 4 to update the superblock format.
    663 
    664 20080721:
    665 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    666 	isn't defined.
    667 
    668 20080531:
    669 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    670 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    671 	utility needs to be rebuilt and reinstalled as older binaries
    672 	won't work correctly.  The following sequence of commands:
    673 
    674 	  $ (cd sys/sys/ && nbmake-$arch includes)
    675 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    676 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    677 
    678 	leaves new drvctl utility in sbin/drvctl build directory.
    679 
    680 20080503:
    681 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    682 
    683 20080521:
    684 	For a while, unprivileged UPDATE builds would fail to
    685 	succeed at the checkflist stage, complaining that
    686 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    687 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    688 	If you already hit this problem, update the .mk file,
    689 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    690 
    691 20080303:
    692 	Linker warnings are now fatal if $WARNS>0.
    693 
    694 20080126:
    695 	The posix_fadvise system call has been changed from an assembly
    696 	stub, to a c file that calls an assembly stub.  You need to
    697 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    698 	avoid using the old assembly stub.
    699 
    700 20071209:
    701 	The acpiec(4) driver has been split into two attachments.  If you
    702 	get ACPI errors before the attachment, please update your kernel
    703 	configuration file appropriately or see GENERIC for more details.
    704 
    705 20071115:
    706 	The it(4) driver has been renamed to itesio(4) and the old port
    707 	argument specified in the kernel configuration file is not valid
    708 	anymore.  The itesio(4) driver now uses the Super I/O address port
    709 	rather than the EC address port.  Please update your kernel
    710 	configuration file appropriately or see GENERIC for more details.
    711 
    712 20071028:
    713 	The pccons(4) driver has been removed from the NetBSD/shark port.
    714 	You need to update any custom kernel configuration file you have
    715 	to remove any references to pccons (which includes removing the
    716 	now useless XSERVER option) and replace them with the correct
    717 	entries for the wscons driver.  See the GENERIC configuration file
    718 	for more details.
    719 
    720 20070913:
    721 	A latent bug in dhclient/dhcpd that caused it to be unable to
    722 	enumerate interfaces was fixed.  The bug began to cause
    723 	problems after 20070911 when the kernel's SIOCGIFCONF
    724 	implementation was repaired.  From 20070529 to 20070911 racoon
    725 	could not enumerate interfaces.  (These are noted because
    726 	normal kernel/userspace version matching hygiene is not
    727 	sufficient to avoid this problem.)  Ensure that both kernel
    728 	and userland are from after 20070913.
    729 
    730 20070703:
    731 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    732 	calls the target-specific strip program, and the logic to pass
    733 	down STRIP from make has been removed.  This requires a
    734 	re-installation of tools.
    735 
    736 20070422:
    737 	The way OS emulations lookup filenames inside the emulation root
    738 	has been changed.  Rather than modify the pathname (and copy back
    739 	to userspace) namei() and lookup() directly check the emulation
    740 	root.  One side effect is that absolute symlinks inside the emulated
    741 	root file system will be relative to that file system - unless they
    742 	start /../ this is useful when the emulated root is a real install
    743 	that has such links.
    744 	This might affect symlinks that have been added to reference outside
    745 	the emulated root.
    746 
    747 20070412:
    748 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    749 	instead.  See the GENERIC32_IP3x kernel configuration for an
    750 	example.
    751 
    752 20070319:
    753         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    754         on many platforms due to incorrect flags settings.  If you
    755         updated and built after about 20070315, do "nbmake-$arch
    756 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    757 	rebuild of object files that might have been built
    758 	incorrectly, and ensure that you have at least
    759 	src/lib/libc/Makefile 1.130.
    760 
    761 20070210:
    762         src/sys/sys/{sa.h,savar.h} were removed.
    763           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    764               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    765         will allow dependencies on those files to get get rebuilt
    766 
    767 20070209:
    768         The threading model was changed when the newlock2 branch
    769         was merged to NetBSD-current.  If you boot with a new
    770         kernel (version 4.99.10), then you also need a new pthread
    771         library (/usr/lib/libpthread.so.0.7).  If you boot with
    772         an old kernel, then you need the old pthread library
    773         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    774         the pthread library in sync, old threaded applications should
    775         continue to work with an old or new kernel.  Note that named(8)
    776 	is the only threaded application in the base system.
    777 
    778 20061214:
    779 	Following the move of string_to_flags() and flags_to_string()
    780 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    781 	will need to do a "make cleandir" in
    782 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    783 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    784 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    785 		as the installation images in distrib/
    786 	in order to excise stale references to the old stat_flags.h header
    787 	file in the ls sources -- stat_flags.h has been removed.
    788 
    789 20061108:
    790 	The configure script used in the src/tools/gcc compiler has been
    791 	changed to indicate that our libc has ssp support built-in and
    792 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    793 	make clean in src/tools/gcc first to rebuild the compiler.
    794 
    795 20061009:
    796 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    797 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    798 
    799 20060814:
    800 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    801 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    802 	kernel configuration for an example.  X servers from the last
    803 	few years should cope.
    804 
    805 20060703:
    806 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    807 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    808 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    809 
    810 20060627:
    811 	socket(2) has changed, and its system call has been versioned.
    812 	For userlands with the old version of socket(2), make sure that
    813 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    814 	errors will result.
    815 
    816 Hints for a more successful build:
    817 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    818     Use build.sh, but do not use its "expert mode":
    819 	This will automatically build the tools in the
    820 	   correct order, and it will keep the tools and the
    821 	   new build products from interfering with the running
    822 	   system.  This will allow you to ignore most of the
    823 	   other advice in this file.
    824     Build a new kernel first:
    825 	This makes sure that any new system calls or features
    826 	   expected by the new userland will be present.  This
    827 	   helps to avoid critical errors when upgrading.
    828     Use object directories:
    829 	This helps to keep stale object
    830 	   files from polluting the build if a Makefile "forgets"
    831 	   about one.  It also makes it easier to clean up after
    832 	   a build.  It's also necessary if you want to use the
    833 	   same source tree for multiple machines.
    834 	   To use object directories with build.sh:
    835 	    a) invoke build.sh with the "-M" or "-O" options.
    836 	   To use object directories without using build.sh:
    837 	    a) cd /usr/src ; make cleandir
    838 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    839 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    840 	    d) cd /usr/src ; make build
    841 	   Note that running "make obj" in a directory will create
    842 	   in obj.$MACHINE directory.
    843     Build to a DESTDIR:
    844 	This helps to keep old installed files (especially libraries)
    845 	   from interfering with the new build.
    846 	   To build to a DESTDIR with build.sh, use the "-D" option.
    847 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    848 	   environment variable before running make build.  It should be
    849 	   set to the pathname of an initially empty directory.
    850 	   Problems: if you do not use build.sh, you might need to
    851 		update critical utilities without using DESTDIR since
    852 		nothing is executed from what is installed in DESTDIR.
    853 		(See critical utils, below.)
    854     Build often:
    855 	This keeps critical utilities current enough to not choke
    856 	on any other part of the source tree that depends on up to
    857 	date functionality.  If you use build.sh, you should not have
    858 	this problem.
    859 
    860 What to do if things don't work:
    861 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    862 When things don't work there are usually a few things that commonly
    863 should be done.
    864     1)	make includes
    865 	This should be done automatically by make build.
    866     2)  cd share/mk && make install
    867 	Again, automatically done by make build.
    868 
    869 Failsafe rebuild of a small part of the tree:
    870 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    871 To make sure you rebuild something correctly you want to do
    872 something like the following:
    873     1)  Make sure the includes and .mk files are up to date.
    874     2)  Make sure any program used to build the particular
    875 	utility is up to date.  (yacc, lex, etc...)
    876     3)  cd ...path/to/util...
    877 	make cleandir
    878 	rm ...all obj directories...
    879 	make cleandir			# yes, again
    880 	make obj
    881 	make depend && make
    882 
    883 Failsafe rebuild of the entire tree:
    884 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    885 If you really want to make sure the source tree is clean and
    886 ready for a build try the following.  Note that sourcing /etc/mk.conf
    887 (a make(1) Makefile) in this manner is not right, and will not work
    888 for anyone who uses any make(1) features in /etc/mk.conf.
    889 
    890 ---cut here---
    891 #!/bin/sh
    892 . /etc/mk.conf
    893 
    894 if [ -z $NETBSDSRCDIR ] ; then
    895     NETBSDSRCDIR=/usr/src
    896 fi
    897 if [ \! -d $NETBSDSRCDIR ] ; then
    898     echo Unable to find sources
    899     exit 1
    900 fi
    901 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    902 
    903 if [ -z $BSDOBJDIR ] ; then
    904     BSDOBJDIR=/usr/obj
    905 fi
    906 if [ -d $BSDOBJDIR ] ; then
    907     rm -rf $BSDOBJDIR
    908 fi
    909 
    910 cd $NETBSDSRCDIR && make cleandir
    911 
    912 ---cut here---
    913 
    914 Critical utilities:
    915 ^^^^^^^^^^^^^^^^^^^
    916 	usr.bin/compile_et
    917 	usr.bin/make
    918 	usr.bin/yacc
    919 	usr.bin/lex
    920 	usr.bin/xlint
    921 	usr.bin/config
    922 
    923 Other problems and possible solutions:
    924 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    925 Symptom:Complaints involving a Makefile.
    926 Fix:	Rebuild usr.bin/make:
    927 	cd usr.bin/make && make && make install
    928 	Or, a failsafe method if that doesn't work:
    929 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    930 
    931 Fix:	Make sure .mk files are up to date.
    932 	cd share/mk && make install
    933 
    934 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    935 Fix:	Rebuild usr.bin/config
    936 
    937 Symptom:
    938 Fix:	Rebuild usr.bin/yacc
    939 
    940 Symptom:
    941 Fix:	Rebuild usr.bin/lex
    942 
    943 Symptom:
    944 Fix:	rm /usr/lib/libbfd.a
    945 
    946 Symptom:Obsolete intermediate files are used during compilation
    947 Fix:	Try the following sequence of commands in the directory in question.
    948 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    949 	(If you built the tree without "make obj" in the past, obsolete files
    950 	may remain.  The command tries to clean everything up)
    951 
    952 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
    953 	pointer type
    954 Fix:	Rebuild and install usr.bin/menuc
    955 
    956 Symptom:mklocale not found during build in share/locale/ctype
    957 Fix:	Build and install usr.bin/mklocale
    958 
    959 Symptom:undefined reference to `__assert13' or `__unsetenv13'
    960 Fix:    Rebuild and install lib/libc
    961 
    962 Symptom:usr.bin/config fails to build.
    963 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
    964 
    965 Symptom:undefined reference to `getprogname' or `setprogname'
    966 Fix:    Rebuild and install lib/libc
    967 
    968 Symptom:lint does not understand the '-X' option
    969 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
    970 
    971 Symptom:Update build fails in src/tools/gcc complaining that a variable
    972 	(e.g. CPPFLAGS) has changed since the previous run.
    973 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
    974 
    975 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
    976 	No such file or directory.
    977 Cause:	If a directory is created by mistake, then it is sometimes
    978 	deleted from the CVS repository using administrative commands
    979 	that bypass the normal cvs access controls.  If your cvs working tree
    980 	contains references to a directory that has been deleted on the
    981 	server in this way, then "cvs update" reports this error.
    982 Fix:	Recursively delete the affected directory from your working tree
    983 	and try the update again.
    984