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UPDATING revision 1.310
      1 $NetBSD: UPDATING,v 1.310 2020/06/15 21:52:03 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 20200614:
     23 	blacklist* has been renamed to blocklist*. postinstall(8)
     24 	should handle the migration
     25 
     26 20200601:
     27 	Due to a mistake in LIBISPRIVATE handling, .so libraries were
     28 	created in the build directories and need cleaning.
     29 
     30 20200311:
     31 	GCC 8 ports will need cleaning in src/tools/gcc and
     32 	src/external/gpl3/gcc due to GCC 8.4 update.
     33 
     34 20191118:
     35 	More architectures were switched to gcc8:
     36 	    i386, ia64 powerpc64, sparc, sparc64, arm
     37 	The same comments as in 20191022 apply.
     38 
     39 20191112:
     40 	The LLVM update requires a clean rebuild for all architectures using
     41 	LLVM during the tools build phase (i386, amd64, aarch64).
     42 
     43 20191022:
     44 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
     45 	In-place ("expert mode", build.sh -E) builds are not supported
     46 	when going from a GCC 7 userland to GCC 8. Do a regular
     47 	build to a different DESTDIR (or preferably: build.sh -U) at least
     48 	once and install sets, or download comp.{tar.xz,tgz} from the
     49 	daily builds and install that before doing the next in-place build.
     50 
     51 20191001:
     52 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
     53 	old builds with GCC 7 output now uses GCC 8.  Clean this
     54 	directory, and also clean src/external/gpl3/gcc.
     55 
     56 20190903:
     57 	Files with names that coincide with existing files' names on
     58 	case-insensitive file systems were inadvertently committed, for
     59 	radeon GPU firmware.  We cannot mark these as obsolete for
     60 	postinstall to fix, so if you updated src since 2019-08-26, and
     61 	ran build.sh distribution or ran build.sh release, you must
     62 	manually delete the following files in your DESTDIR (which is
     63 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
     64 	them:
     65 
     66 		/libdata/firmware/radeon/bonaire_ce.bin
     67 		/libdata/firmware/radeon/bonaire_mc.bin
     68 		/libdata/firmware/radeon/bonaire_me.bin
     69 		/libdata/firmware/radeon/bonaire_mec.bin
     70 		/libdata/firmware/radeon/bonaire_pfp.bin
     71 		/libdata/firmware/radeon/bonaire_rlc.bin
     72 		/libdata/firmware/radeon/bonaire_sdma.bin
     73 		/libdata/firmware/radeon/bonaire_smc.bin
     74 		/libdata/firmware/radeon/bonaire_uvd.bin
     75 		/libdata/firmware/radeon/hainan_ce.bin
     76 		/libdata/firmware/radeon/hainan_mc.bin
     77 		/libdata/firmware/radeon/hainan_me.bin
     78 		/libdata/firmware/radeon/hainan_pfp.bin
     79 		/libdata/firmware/radeon/hainan_rlc.bin
     80 		/libdata/firmware/radeon/hainan_smc.bin
     81 		/libdata/firmware/radeon/hawaii_ce.bin
     82 		/libdata/firmware/radeon/hawaii_mc.bin
     83 		/libdata/firmware/radeon/hawaii_me.bin
     84 		/libdata/firmware/radeon/hawaii_mec.bin
     85 		/libdata/firmware/radeon/hawaii_pfp.bin
     86 		/libdata/firmware/radeon/hawaii_rlc.bin
     87 		/libdata/firmware/radeon/hawaii_sdma.bin
     88 		/libdata/firmware/radeon/hawaii_smc.bin
     89 		/libdata/firmware/radeon/kabini_ce.bin
     90 		/libdata/firmware/radeon/kabini_me.bin
     91 		/libdata/firmware/radeon/kabini_mec.bin
     92 		/libdata/firmware/radeon/kabini_pfp.bin
     93 		/libdata/firmware/radeon/kabini_rlc.bin
     94 		/libdata/firmware/radeon/kabini_sdma.bin
     95 		/libdata/firmware/radeon/kaveri_ce.bin
     96 		/libdata/firmware/radeon/kaveri_me.bin
     97 		/libdata/firmware/radeon/kaveri_mec.bin
     98 		/libdata/firmware/radeon/kaveri_mec2.bin
     99 		/libdata/firmware/radeon/kaveri_pfp.bin
    100 		/libdata/firmware/radeon/kaveri_rlc.bin
    101 		/libdata/firmware/radeon/kaveri_sdma.bin
    102 		/libdata/firmware/radeon/mullins_ce.bin
    103 		/libdata/firmware/radeon/mullins_me.bin
    104 		/libdata/firmware/radeon/mullins_mec.bin
    105 		/libdata/firmware/radeon/mullins_pfp.bin
    106 		/libdata/firmware/radeon/mullins_rlc.bin
    107 		/libdata/firmware/radeon/mullins_sdma.bin
    108 		/libdata/firmware/radeon/oland_ce.bin
    109 		/libdata/firmware/radeon/oland_mc.bin
    110 		/libdata/firmware/radeon/oland_me.bin
    111 		/libdata/firmware/radeon/oland_pfp.bin
    112 		/libdata/firmware/radeon/oland_rlc.bin
    113 		/libdata/firmware/radeon/oland_smc.bin
    114 		/libdata/firmware/radeon/pitcairn_ce.bin
    115 		/libdata/firmware/radeon/pitcairn_mc.bin
    116 		/libdata/firmware/radeon/pitcairn_me.bin
    117 		/libdata/firmware/radeon/pitcairn_pfp.bin
    118 		/libdata/firmware/radeon/pitcairn_rlc.bin
    119 		/libdata/firmware/radeon/pitcairn_smc.bin
    120 		/libdata/firmware/radeon/tahiti_ce.bin
    121 		/libdata/firmware/radeon/tahiti_mc.bin
    122 		/libdata/firmware/radeon/tahiti_me.bin
    123 		/libdata/firmware/radeon/tahiti_pfp.bin
    124 		/libdata/firmware/radeon/tahiti_rlc.bin
    125 		/libdata/firmware/radeon/tahiti_smc.bin
    126 		/libdata/firmware/radeon/verde_ce.bin
    127 		/libdata/firmware/radeon/verde_mc.bin
    128 		/libdata/firmware/radeon/verde_me.bin
    129 		/libdata/firmware/radeon/verde_pfp.bin
    130 		/libdata/firmware/radeon/verde_rlc.bin
    131 		/libdata/firmware/radeon/verde_smc.bin
    132 
    133 	We will re-import these radeon firmware images another way
    134 	later.
    135 
    136 20190727:
    137 	The uefi bootloader has gained tftp support and needs a clean
    138 	build. If you do update builds, manually clean its object
    139 	directory by something like:
    140 	cd sys/arch/i386/stand/efiboot && make clean
    141 
    142 20190723:
    143 	The jemalloc allocator in libc is now build without extended
    144 	debugging (for performance reasons). In update builds make sure
    145 	to rebuild it completly, by removing all affected object files,
    146 	including compat builds, something like:
    147 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    148 
    149 20190207:
    150 	GCC 7 switched for many ports.  Update builds are likely to fail.
    151 
    152 20180924:
    153 	A newer OpenSSL version has been imported. If you are doing
    154 	update builds, make sure to remove all old obj dirs, like:
    155 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    156 
    157 20180717:
    158 	On aarch64 int64_t and related types have changed from long long
    159 	to long. This requires recompiling all C++ binaries.
    160 
    161 20180713:
    162 	On amd64 and i386 static binaries are now build position
    163 	independend. This requires recompilation of all object
    164 	files used to create the crunched /rescue binary.
    165 	Clean the rescue directory in your obj directory before
    166 	doing an update build, otherwise linking will fail.
    167 
    168 20180414:
    169 	Existing binutils was migrated to binutils.old.  Manual
    170 	removal of tools/binutils objects directory may be required
    171 	to fix tools build failure.
    172 
    173 20180311:
    174 	bdftopcf was updated and may need cleaning in the
    175 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    176 	link errors.
    177 
    178 20180212:
    179 	between OpenSSL and GCC updates, many things may fail to build.
    180 	any failure that looks like GCC or openssl is best handled by
    181 	a clean destdir and objdir.  Full cleandir and destdir deletion
    182 	is recommended if build failures occur.
    183 
    184 20171225:
    185 	removal of the vadvise syscall requires manual removal of all
    186 	associated files from the libc build object directory (including
    187 	the .depend files) - a command like:
    188 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    189 	For architectures that support multiple "compat" binary targets,
    190 	you'll need to cleanup both the regular libc directory and the
    191 	compat ones (the above command will do that).
    192 
    193 20171010:
    194 	a change to the build structure of external/bsd/acpica/bin/iasl
    195 	means that its objdir (or *.d and .depend at least) might need
    196 	to be manually removed - or a build done once without -u.
    197 
    198 20170822:
    199 	a new version of GMP has been imported and probably
    200 	will break parts of builds related to themselves or GCC, both
    201 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    202 	and MPC objdirs or build once without -u.
    203 
    204 20170816:
    205 	a new version of MPFR and MPC have been imported and probably
    206 	will break parts of builds related to themselves or GCC, both
    207 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    208 	and MPC objdirs or build once without -u.
    209 
    210 20170402:
    211 	a new version of dhcpcd has been imported, which does not support
    212 	update builds from the previous version. Remove your
    213 	external/bsd/dhcpcd object dir or build once without -u.
    214 
    215 20170211:
    216 	a new terminfo database has been imported.
    217 	The structure of it has changed slightly from prior versions and
    218 	an updated tic tool is required.
    219 	If you build.sh, don't use -u
    220 
    221 20170207:
    222 	various arch dependent libc/exect.S files were removed
    223 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    224 	if it exists) or do a clean build.
    225 	(This is a bug in the make system, it should be corrected without
    226 	human intervention, but isn't.)
    227 
    228 20170104:
    229 	xinput build options have changed.
    230 	Remove the obj directory (external/mit/xorg/bin/xinput)
    231 	if you build.sh -u
    232 
    233 20170103:
    234 	a new version of flex has been imported.
    235 	Remove the file from obj (external/bsd/flex)
    236 	if you build.sh -u
    237 
    238 20161014:
    239 	a new version of OpenSSL has been imported.
    240 	Remove the files from obj (crypto/external/bsd/openssl) 
    241 	if you build.sh -u
    242 
    243 20161009:
    244 	a new version of dhcpcd has been imported with slightly changed
    245 	build infrastructure. When doing a build.sh -u this requires
    246 	pruning the external/bsd/dhcpcd objdir.
    247 
    248 20160914:
    249 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    250 	ports in using xorg-server 1.18. This requires a clean destdir
    251 	and a clean objdir.
    252 
    253 20160527:
    254 	i386 needs a full cleandir or objdir deletion because PIE has
    255 	been enabled. (see the amd64 entry two down for further info)
    256 
    257 20160418:
    258 	libedit needs manual removal of all autogenerated files since
    259 	some of them are not autogenerated anymore. Remember that there
    260 	might be two copies of libedit if your platform builds "compat".
    261 
    262 20160410:
    263 	amd64 needs full "make cleandir" or deletion of objdir now that
    264 	PIE has been enabled for amd64.  PIE, or position-independent
    265 	executables, means all code, including executables and not just
    266 	shared libraries, is position-independent and hence able to be
    267 	relocated by ASLR, address space layout randomization.
    268 
    269 	The change was made in Makefile variables for compiler and
    270 	linker flags, for which make(1) does not record dependencies,
    271 	hence it is unable to detect that all .o files need rebuilding.
    272 
    273 	Partial rebuilds with some modified source files will likely
    274 	fail when linking executables, since the linker refuses to mix
    275 	position-independent code with position-dependent code in
    276 	position-independent executables:
    277 
    278 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    279 
    280 20160401:
    281 	Ports switching to GCC 5.3 will need a full "make cleandir".
    282 	Some people have found that cleandir is not sufficient, so if
    283 	in doubt delete the entire object directory tree for gcc.
    284 
    285 20160306:
    286 	NetBSD's regexp implementation is now part of libnbcompat.
    287 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    288 	non-NetBSD hosts if linked with stale object files produced
    289 	while they included a non-NetBSD regex.h.
    290 	In any case, you should "make cleandir" at least these tools
    291 	before updating your toolchain.
    292 
    293 20160125:
    294 	Dtrace has been enabled by default on some architectures.
    295 	When doing an update build, make sure to clean the etc/mtree
    296 	object directory before starting the build - otherwise the
    297 	needed directories in destdir will not be created.
    298 	An easy way to do this is:
    299 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    300 
    301 20150818:
    302 	New acpica requires "make cleandir" in src/external/bsd/acpica
    303 	again.
    304 
    305 20150413:
    306 	New acpica requires "make cleandir" and reinstalling yacc
    307 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    308 	also "make cleandir" in /usr/src/external/bsd/acpica.
    309 
    310 20150404:
    311 	Lint changes require a full rebuild of the tool, so make
    312 	sure to build without -u option to build.sh, or manually
    313 	do a make cleandir in src/tools/lint1 and
    314 	src/usr.bin/xlint.
    315 
    316 20150310:
    317 	Improvements to openssl for arm mean that update builds of
    318 	the openssl libraries will fail. A make cleandir in
    319 	external/bsd/openssl/lib is needed
    320 
    321 20141026:
    322 	A mishap during the import of pppd may cause your corruption
    323 	in your cvs directory if you happened to do a cvs update
    324 	during a short period of time. To fix, just remove the
    325 	directory src/external/bsd/ppp/dist/pppd completely
    326 	and let cvs restore it on next update.
    327 
    328 20140721:
    329 	The src/external/mit/lua/src directory was accidentally created
    330 	and then deleted in the CVS repository.  If you get errors like
    331 
    332 	cvs [update aborted]: cannot open directory
    333 	/cvsroot/src/external/mit/lua/src: No such file or directory
    334 
    335 	then delete your local copy of that directory tree and try again.
    336 
    337 20140530:
    338 	ARM eABI switched to DWARF based exception handling. This requires
    339 	rebuilding all C++ code. It is strongly advised to do a clean build.
    340 
    341 20140131:
    342 	The new compiler_rt/libc integration moved a few things. It is strongly
    343 	advised to do a clean build. At least lib/libc, the compat version(s)
    344 	of libc, libkern, rump and the kernels need to be cleaned.
    345 
    346 20131227:
    347 	1. The new ntpd runs in a restricted mode to prevent amplification
    348 	   attacks. If you need ntpdc to work you need to explicitly enable
    349 	   mode7 in your config file. Make sure you put the necessary restrict
    350 	   statements to avoid being exposed.
    351 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    352 	   to make clean in libc
    353 
    354 20131129:
    355 	The GMP sources were updated, and builds will likely fail without
    356 	cleaning their build trees for both tools and in-tree, like below.
    357 
    358 20131128:
    359 	The MPC and MPFR sources were updated, and builds may require their
    360 	tools and in-tree directories cleaned for successful updates.
    361 
    362 20130605:
    363 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    364 	to IPSEC (and the older IPSEC version removed).
    365 
    366 20130605:
    367 	Previous freetype installations eroneously installed private
    368 	header files. If you are building against a non-empty $DESTDIR,
    369 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    370 
    371 20130531:
    372 	The xdm update may cause build failure due to xdm.man being
    373 	in the obj tree.  Make sure to ensure any like this:
    374 		nbmake: nbmake: don't know how to make xdm.man. Stop
    375 	is fixed by deleting the xdm.man in the obj tree.
    376 
    377 20130530:
    378 	Updates of many xsrc packages will leave old .pc files around.
    379 	Best to clean out the xsrc objdir entirely before rebuilds.
    380 
    381 20130301:
    382 	The removal of netiso requires manual removal of /usr/include/netiso
    383 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    384 
    385 20120726:
    386 	The update of OpenSSL requires cleaning both the OpenSSL build
    387 	directory and DESTDIR.  *Even non-update builds require cleaning
    388 	DESTDIR.* Builds done without taking these steps may fail, or in
    389 	some cases may succeed and install broken OpenSSL libraries that
    390 	cause third-party software to link incorrectly and/or crash.
    391 
    392 20120507:
    393 	The database schema for makemandb was changed.  You will
    394 	need to update the database using 'makemandb -f' or wait
    395 	for the next weekly run to fix it.
    396 
    397 20120319:
    398 	sys/conf/Makefile.kern.inc has been modified to adjust the
    399 	size of db_symtab automatically.  You need to update dbsym in
    400 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    401 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    402 	mk.conf.
    403 
    404 20120216:
    405 	Default for MKCATPAGES changed to NO.  Update builds will fail
    406 	unless DESTDIR is cleaned manually.  If you built between 20120207
    407 	and 20120216, daily and weekly could have created an unreadable
    408 	/var/db/man.db index for apropos.  Running makemandb -f or
    409 	the next run of weekly will fix it.
    410 
    411 20111227:
    412 	If you built between 20111225 and 20111227 you need to remove
    413 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    414 	bump has been reverted.
    415 
    416 20111125:
    417 	The "rnd" pseudodevice has been added to sys/conf/std, which
    418 	means it should no longer be explicitly listed in kernel
    419 	configuration files.  The line "pseudo-device rnd" should be
    420 	removed from any custom kernel config files users may have.
    421 
    422 20111119:
    423 	A problem with the datastructures used by the rndctl(8)
    424 	utility (pointers in datastructures in an array, making 32->64
    425 	bit compatibility very painful) has been fixed in a
    426 	non-backwards-compatible way.  If you replace your kernel,
    427 	replace your rndctl executable too.
    428 
    429 20111001:
    430 	the prop_*_send_syscall() functions from proplib(3) have been
    431 	changed and their new version is not backward compatible with the old
    432 	one.  So ensure that all consumers of these functions (currently:
    433 	quota2 code and its tests) are updated together with the new lib.
    434 
    435 20110817:
    436 	sparc has been changed to use GCC 4.5.3, so any objdir or
    437 	DESTDIR for them should be deleted before updating.
    438 
    439 20110806:
    440 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    441 	objdir or DESTDIR for them should be deleted before updating.
    442 
    443 20110805:
    444 	The update to GCC 4.5.3 requires a non-trivial portion of
    445 	the tree to be cleaned.  Best to delete both objdir and
    446 	DESTDIR before running this update.  So far, only the
    447 	sparc64, mips and powerpc platforms have changed.
    448 
    449 20110803:
    450 	The layout of external/public-domain/xz has changed.  To do an
    451 	update build you will have to remove the contents of the OBJDIR
    452 	for external/public-domain/xz/bin by hand as the xz entry there
    453 	is now a directory.
    454 
    455 20110410:
    456 	The configuration of src/tools/gcc has changed.  To do an
    457 	update build you have to clean both tools/binutils and
    458 	tools/gcc by hand.
    459 
    460 20110328:
    461 	Building the Xorg binary was moved into a subdirectory to fix
    462 	ordering issues with "make all".  It may be necessary to remove
    463 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    464 	if your update build fails, as the "Xorg" entry there is now a
    465 	directory.
    466 
    467 20110121:
    468 	Assembler files no longer use -traditional-cpp.  This can break
    469 	the build of individual parts of the tree.  This is handled
    470 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    471 	and re-run config(1) for any kernel configurations as needed.
    472 
    473 20101217:
    474 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    475 	by default.  It may be necessary to manually update passwd(5) and
    476 	group(5) in order to make the program work with existing setups.
    477 
    478 20101125:
    479 	The latest changes to setenv(3) dissallow setting environment
    480 	variables with names that contain '='.  Revision 1.18 of env.c
    481 	assumed that this was allowed.  Installing a new libc with an
    482 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    483 	break which affects the autoconf tests for dependency finding,
    484 	so building gcc will end up printing:
    485 	    checking dependency style of gcc... none
    486 	    configure: error: no usable dependency style found
    487 	Fix it by rebuilding and re-installing env.
    488 
    489 20101119:
    490 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    491 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    492 	have any build problems with xsrc, or problems with mismatched
    493 	versions between xorg-server and drivers.
    494 
    495 20100604:
    496 	The update of ATF to 0.9 causes old tests written in shell to fail
    497 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    498 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    499 	trees by hand.
    500 
    501 20100522:
    502 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    503 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    504 	build problems with xsrc.
    505 
    506 20100522:
    507 	private section of <ctype.h> was splitted, and now mklocale(1)
    508 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    509 
    510 20100520:
    511 	The location of the xkb compiled descriptions has changed.  Please
    512 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    513 
    514 20100222:
    515 	The shared objects file extension has been changed from .so to
    516 	.pico, in order to avoid conflicts with shared libraries names
    517 	libXX.so.  All now stale regular .so files can be removed from
    518 	your object directories.
    519 
    520 20100204:
    521 	The termcap database has been removed from the sources,
    522 	but has not been marked obsolete so it is not removed
    523 	from the system when upgrading.
    524 	As such, you will need to remove them from your object
    525 	and destination directories.
    526 
    527 20091101:
    528         After updating, it may be necessary to make the 'cleandir'
    529         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    530         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    531         src/tools/lex/ and src/usr.bin/lex/.
    532 
    533 20091001:
    534 	On amd64 you must rebuild tools (to get the new binutils)
    535 	before building a kernel, or the build fails on cpufunc.S.
    536 
    537 20091001:
    538 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    539 	symlink, failing the build.  Delete the link, and the subdir
    540 	it is in, and retry your build.
    541 
    542 20090718:
    543 	libc build changed so that strchr() provides the extra entry
    544 	point for index().  Update build of libc.a (and libc_pic.a)
    545 	may fail because the archive contains the unwanted index.o.
    546 	(Similarly for strrchr() and rindex().)
    547 
    548 20090709:
    549 	Native Xorg was upgraded again.  Builds will probably fail again
    550 	without a clean objdir, at least for src/external/mit/xorg.
    551 
    552 20090616:
    553 	Native Xorg was upgraded.  Builds will need a clean objdir for
    554 	src/external/mit/xorg.  Upgrading a system from sets will not
    555 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    556 	subdirectory has been changed into a file, and this needs to
    557 	be manually "rm -r"'ed before installing xbase.tgz.
    558 
    559 20090501:
    560 	Several new functions were added to string.h/libc, and this
    561 	can cause autoconf problems during the tool build for people
    562 	who fail to clean out their tools objects properly.  If you
    563 	note messages about stpcpy, stpncpy or strnlen accompanying a
    564 	failure during the tool build, clean out all your tools
    565 	objects and start again.
    566 
    567 20090325:
    568 	The i386 port was switched to i486 default toolchain.  This requires
    569 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    570 
    571 20090126:
    572 	The __posix_fadvise50 system call changed assembly stub type.  You
    573 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    574 	to avoid using the old assembly stub.
    575 
    576 20090202:
    577 	pkg_install now depends on the pkgdb cache for automatic conflict
    578 	detection.  It is recommented to rebuild the cache with
    579 	``pkg_admin rebuild''.
    580 
    581 20090110:
    582 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    583 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    584 	   This is needed even in the MODULAR kernel because there is
    585 	   conditionally compiled code in rtsock.c.
    586 	2. make sure build.sh completes and the binaries in a chroot work
    587 	   before installing.
    588 	3. If you don't use build.sh and you build directly to root, and
    589 	   your build breaks in the middle, don't despair.  Make sure headers
    590 	   are installed properly, and start building libraries first libc
    591 	   and libutil, install them and then continue building all the
    592 	   libraries in src/lib and src/gnu/lib and install them.  Once
    593 	   the new libraries are installed, you can restart the build.
    594 	4. If you compile packages and you notice link time warnings,
    595 	   rebuild the required packages to update their shared libraries.
    596 	   Any package you rebuild will require rebuilding all the packages
    597 	   that depend on it.
    598 	5. Next time you run pwd_mkdb with the new binary, the file
    599 	   will be upgraded and it will not be backwards compatible.
    600 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    601 	   lastlogx(5)) have been versioned, and there is a heuristic
    602 	   for utmp.  You are better off removing the old files after
    603 	   upgrading.  The automated clearing of /var/run during
    604 	   boot, and the automated rotating of files in /var/log by
    605 	   newsyslog(8), may mean that you do not have to remove the
    606 	   files manually.
    607 	7. The optional accounting file (/var/account/acct, see
    608 	   accton(8)) has not been versioned, and will need to be
    609 	   removed.  The automatic rotation of the accounting file by
    610 	   /etc/daily limits the bad consequences of failure to remove
    611 	   the file.
    612 	8. Application software that writes time_t to binary files on
    613 	   disk will break or need attention.  Most notably: if you are
    614 	   using PostgreSQL < 8.4, you need to dump your databases,
    615 	   rebuild PostgreSQL with the new time_t, then restore.
    616 
    617 20081219:
    618 	config(1) has been updated, and one of the files it creates -
    619 	swapnetbsd.o - has changed format.  You need to rebuild config
    620 	(done automatically by build.sh) and then you need to rerun
    621 	config on all kernel configuration files before rebuilding those
    622 	kernels.
    623 
    624 20081205:
    625 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    626 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    627 	set and will appear as extra files for MKX11=no update builds.
    628 
    629 20081122:
    630 	On i386, various kernel options(4) in GENERIC including
    631 	file systems have been disabled and moved into kernel modules.
    632 	Before trying a new GENERIC kernel, you have to prepare the
    633 	following files as well as a new GENERIC kernel:
    634 
    635 	- build and install kernel modules from src/sys/modules
    636 
    637 	- install the latest bootloader, which will load a module
    638 	  for the file system from which the kernel is loaded automatically
    639 
    640 	If you have to load your kernel from a file system which is not of
    641 	the same type as the root file system, you have to load the necessary
    642 	file system module manually on the boot prompt or in the boot.cfg file.
    643 
    644 20080827:
    645 	If you built and installed a libc from sources between
    646 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    647 	which results in false errors reported by lint(1).
    648 	Since this breaks the libc build itself, manual help is
    649 	needed -- lint must be disabled temporarily, e.g.:
    650 	  $ (cd lib/libc && make MKLINT=no dependall install)
    651 
    652 20080813:
    653 	MKDEBUG build was broken because the .depend files did not know
    654 	about .go files.  You need to remove all .depend files and rebuild.
    655 
    656 20080802:
    657 	A regression in binary compatibility for pthread_mutex_t has
    658 	been fixed.  Unfortunately, the price is breaking compatibility
    659 	for -current.
    660 
    661 	Threaded programs (using libpthread) and C++ programs (using
    662 	libstdc++) compiled after 20070907 and before 20080802 need to
    663 	be recompiled.
    664 
    665 	One way to find affected pkgsrc packages:
    666 
    667 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    668 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    669 
    670 20080731:
    671 	WAPBL (metadata journaling support) has been added, but at this
    672 	time isn't backwards compatible with pre-WAPBL aware kernels
    673 	and userland (fsck_ffs in particular).  Please make sure you
    674 	don't use a journaled filesystem with an older kernel/userland,
    675 	especially an uncleanly mounted journaled filesystem.  WAPBL
    676 	also requires the super block to be in the UFS2 format.  You
    677 	can use fsck_ffs -c 4 to update the superblock format.
    678 
    679 20080721:
    680 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    681 	isn't defined.
    682 
    683 20080531:
    684 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    685 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    686 	utility needs to be rebuilt and reinstalled as older binaries
    687 	won't work correctly.  The following sequence of commands:
    688 
    689 	  $ (cd sys/sys/ && nbmake-$arch includes)
    690 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    691 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    692 
    693 	leaves new drvctl utility in sbin/drvctl build directory.
    694 
    695 20080503:
    696 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    697 
    698 20080521:
    699 	For a while, unprivileged UPDATE builds would fail to
    700 	succeed at the checkflist stage, complaining that
    701 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    702 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    703 	If you already hit this problem, update the .mk file,
    704 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    705 
    706 20080303:
    707 	Linker warnings are now fatal if $WARNS>0.
    708 
    709 20080126:
    710 	The posix_fadvise system call has been changed from an assembly
    711 	stub, to a c file that calls an assembly stub.  You need to
    712 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    713 	avoid using the old assembly stub.
    714 
    715 20071209:
    716 	The acpiec(4) driver has been split into two attachments.  If you
    717 	get ACPI errors before the attachment, please update your kernel
    718 	configuration file appropriately or see GENERIC for more details.
    719 
    720 20071115:
    721 	The it(4) driver has been renamed to itesio(4) and the old port
    722 	argument specified in the kernel configuration file is not valid
    723 	anymore.  The itesio(4) driver now uses the Super I/O address port
    724 	rather than the EC address port.  Please update your kernel
    725 	configuration file appropriately or see GENERIC for more details.
    726 
    727 20071028:
    728 	The pccons(4) driver has been removed from the NetBSD/shark port.
    729 	You need to update any custom kernel configuration file you have
    730 	to remove any references to pccons (which includes removing the
    731 	now useless XSERVER option) and replace them with the correct
    732 	entries for the wscons driver.  See the GENERIC configuration file
    733 	for more details.
    734 
    735 20070913:
    736 	A latent bug in dhclient/dhcpd that caused it to be unable to
    737 	enumerate interfaces was fixed.  The bug began to cause
    738 	problems after 20070911 when the kernel's SIOCGIFCONF
    739 	implementation was repaired.  From 20070529 to 20070911 racoon
    740 	could not enumerate interfaces.  (These are noted because
    741 	normal kernel/userspace version matching hygiene is not
    742 	sufficient to avoid this problem.)  Ensure that both kernel
    743 	and userland are from after 20070913.
    744 
    745 20070703:
    746 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    747 	calls the target-specific strip program, and the logic to pass
    748 	down STRIP from make has been removed.  This requires a
    749 	re-installation of tools.
    750 
    751 20070422:
    752 	The way OS emulations lookup filenames inside the emulation root
    753 	has been changed.  Rather than modify the pathname (and copy back
    754 	to userspace) namei() and lookup() directly check the emulation
    755 	root.  One side effect is that absolute symlinks inside the emulated
    756 	root file system will be relative to that file system - unless they
    757 	start /../ this is useful when the emulated root is a real install
    758 	that has such links.
    759 	This might affect symlinks that have been added to reference outside
    760 	the emulated root.
    761 
    762 20070412:
    763 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    764 	instead.  See the GENERIC32_IP3x kernel configuration for an
    765 	example.
    766 
    767 20070319:
    768         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    769         on many platforms due to incorrect flags settings.  If you
    770         updated and built after about 20070315, do "nbmake-$arch
    771 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    772 	rebuild of object files that might have been built
    773 	incorrectly, and ensure that you have at least
    774 	src/lib/libc/Makefile 1.130.
    775 
    776 20070210:
    777         src/sys/sys/{sa.h,savar.h} were removed.
    778           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    779               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    780         will allow dependencies on those files to get get rebuilt
    781 
    782 20070209:
    783         The threading model was changed when the newlock2 branch
    784         was merged to NetBSD-current.  If you boot with a new
    785         kernel (version 4.99.10), then you also need a new pthread
    786         library (/usr/lib/libpthread.so.0.7).  If you boot with
    787         an old kernel, then you need the old pthread library
    788         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    789         the pthread library in sync, old threaded applications should
    790         continue to work with an old or new kernel.  Note that named(8)
    791 	is the only threaded application in the base system.
    792 
    793 20061214:
    794 	Following the move of string_to_flags() and flags_to_string()
    795 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    796 	will need to do a "make cleandir" in
    797 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    798 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    799 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    800 		as the installation images in distrib/
    801 	in order to excise stale references to the old stat_flags.h header
    802 	file in the ls sources -- stat_flags.h has been removed.
    803 
    804 20061108:
    805 	The configure script used in the src/tools/gcc compiler has been
    806 	changed to indicate that our libc has ssp support built-in and
    807 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    808 	make clean in src/tools/gcc first to rebuild the compiler.
    809 
    810 20061009:
    811 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    812 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    813 
    814 20060814:
    815 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    816 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    817 	kernel configuration for an example.  X servers from the last
    818 	few years should cope.
    819 
    820 20060703:
    821 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    822 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    823 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    824 
    825 20060627:
    826 	socket(2) has changed, and its system call has been versioned.
    827 	For userlands with the old version of socket(2), make sure that
    828 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    829 	errors will result.
    830 
    831 Hints for a more successful build:
    832 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    833     Use build.sh, but do not use its "expert mode":
    834 	This will automatically build the tools in the
    835 	   correct order, and it will keep the tools and the
    836 	   new build products from interfering with the running
    837 	   system.  This will allow you to ignore most of the
    838 	   other advice in this file.
    839     Build a new kernel first:
    840 	This makes sure that any new system calls or features
    841 	   expected by the new userland will be present.  This
    842 	   helps to avoid critical errors when upgrading.
    843     Use object directories:
    844 	This helps to keep stale object
    845 	   files from polluting the build if a Makefile "forgets"
    846 	   about one.  It also makes it easier to clean up after
    847 	   a build.  It's also necessary if you want to use the
    848 	   same source tree for multiple machines.
    849 	   To use object directories with build.sh:
    850 	    a) invoke build.sh with the "-M" or "-O" options.
    851 	   To use object directories without using build.sh:
    852 	    a) cd /usr/src ; make cleandir
    853 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    854 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    855 	    d) cd /usr/src ; make build
    856 	   Note that running "make obj" in a directory will create
    857 	   in obj.$MACHINE directory.
    858     Build to a DESTDIR:
    859 	This helps to keep old installed files (especially libraries)
    860 	   from interfering with the new build.
    861 	   To build to a DESTDIR with build.sh, use the "-D" option.
    862 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    863 	   environment variable before running make build.  It should be
    864 	   set to the pathname of an initially empty directory.
    865 	   Problems: if you do not use build.sh, you might need to
    866 		update critical utilities without using DESTDIR since
    867 		nothing is executed from what is installed in DESTDIR.
    868 		(See critical utils, below.)
    869     Build often:
    870 	This keeps critical utilities current enough to not choke
    871 	on any other part of the source tree that depends on up to
    872 	date functionality.  If you use build.sh, you should not have
    873 	this problem.
    874 
    875 What to do if things don't work:
    876 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    877 When things don't work there are usually a few things that commonly
    878 should be done.
    879     1)	make includes
    880 	This should be done automatically by make build.
    881     2)  cd share/mk && make install
    882 	Again, automatically done by make build.
    883 
    884 Failsafe rebuild of a small part of the tree:
    885 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    886 To make sure you rebuild something correctly you want to do
    887 something like the following:
    888     1)  Make sure the includes and .mk files are up to date.
    889     2)  Make sure any program used to build the particular
    890 	utility is up to date.  (yacc, lex, etc...)
    891     3)  cd ...path/to/util...
    892 	make cleandir
    893 	rm ...all obj directories...
    894 	make cleandir			# yes, again
    895 	make obj
    896 	make depend && make
    897 
    898 Failsafe rebuild of the entire tree:
    899 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    900 If you really want to make sure the source tree is clean and
    901 ready for a build try the following.  Note that sourcing /etc/mk.conf
    902 (a make(1) Makefile) in this manner is not right, and will not work
    903 for anyone who uses any make(1) features in /etc/mk.conf.
    904 
    905 ---cut here---
    906 #!/bin/sh
    907 . /etc/mk.conf
    908 
    909 if [ -z $NETBSDSRCDIR ] ; then
    910     NETBSDSRCDIR=/usr/src
    911 fi
    912 if [ \! -d $NETBSDSRCDIR ] ; then
    913     echo Unable to find sources
    914     exit 1
    915 fi
    916 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    917 
    918 if [ -z $BSDOBJDIR ] ; then
    919     BSDOBJDIR=/usr/obj
    920 fi
    921 if [ -d $BSDOBJDIR ] ; then
    922     rm -rf $BSDOBJDIR
    923 fi
    924 
    925 cd $NETBSDSRCDIR && make cleandir
    926 
    927 ---cut here---
    928 
    929 Critical utilities:
    930 ^^^^^^^^^^^^^^^^^^^
    931 	usr.bin/compile_et
    932 	usr.bin/make
    933 	usr.bin/yacc
    934 	usr.bin/lex
    935 	usr.bin/xlint
    936 	usr.bin/config
    937 
    938 Other problems and possible solutions:
    939 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    940 Symptom:Complaints involving a Makefile.
    941 Fix:	Rebuild usr.bin/make:
    942 	cd usr.bin/make && make && make install
    943 	Or, a failsafe method if that doesn't work:
    944 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    945 
    946 Fix:	Make sure .mk files are up to date.
    947 	cd share/mk && make install
    948 
    949 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    950 Fix:	Rebuild usr.bin/config
    951 
    952 Symptom:
    953 Fix:	Rebuild usr.bin/yacc
    954 
    955 Symptom:
    956 Fix:	Rebuild usr.bin/lex
    957 
    958 Symptom:
    959 Fix:	rm /usr/lib/libbfd.a
    960 
    961 Symptom:Obsolete intermediate files are used during compilation
    962 Fix:	Try the following sequence of commands in the directory in question.
    963 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    964 	(If you built the tree without "make obj" in the past, obsolete files
    965 	may remain.  The command tries to clean everything up)
    966 
    967 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
    968 	pointer type
    969 Fix:	Rebuild and install usr.bin/menuc
    970 
    971 Symptom:mklocale not found during build in share/locale/ctype
    972 Fix:	Build and install usr.bin/mklocale
    973 
    974 Symptom:undefined reference to `__assert13' or `__unsetenv13'
    975 Fix:    Rebuild and install lib/libc
    976 
    977 Symptom:usr.bin/config fails to build.
    978 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
    979 
    980 Symptom:undefined reference to `getprogname' or `setprogname'
    981 Fix:    Rebuild and install lib/libc
    982 
    983 Symptom:lint does not understand the '-X' option
    984 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
    985 
    986 Symptom:Update build fails in src/tools/gcc complaining that a variable
    987 	(e.g. CPPFLAGS) has changed since the previous run.
    988 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
    989 
    990 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
    991 	No such file or directory.
    992 Cause:	If a directory is created by mistake, then it is sometimes
    993 	deleted from the CVS repository using administrative commands
    994 	that bypass the normal cvs access controls.  If your cvs working tree
    995 	contains references to a directory that has been deleted on the
    996 	server in this way, then "cvs update" reports this error.
    997 Fix:	Recursively delete the affected directory from your working tree
    998 	and try the update again.
    999