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UPDATING revision 1.314
      1 $NetBSD: UPDATING,v 1.314 2020/09/12 08:31:39 mrg Exp $
      2 
      3 This file (UPDATING) is intended to be a brief reference to recent
      4 changes that might cause problems in the build process, and a guide for
      5 what to do if something doesn't work.
      6 
      7 For a more detailed description of the recommended way to build NetBSD
      8 using build.sh, see the BUILDING file.
      9 
     10 Note that much of the advice in this UPDATING file was written before
     11 build.sh existed.  Nevertheless, the advice here may be useful for
     12 working around specific problems with build.sh.
     13 
     14 Sections are marked with "^^^^^".  After the section on "Recent changes"
     15 are several sections containing more general information.
     16 
     17 See also: BUILDING, build.sh, Makefile.
     18 
     19 Recent changes:
     20 ^^^^^^^^^^^^^^^
     21 
     22 20200912:
     23 	GCC 9 has arrived for Arm and x86 platforms, and will be coming
     24 	for several more, as will binutils 2.34.  Clean as required.
     25 
     26 20200907:
     27 	GCC 9 is coming, and binutils has been updated for MIPS.  This
     28 	probably requires cleaning the tools/binutils.
     29 
     30 20200811:
     31 	GCC updates may require cleaning the objdir.  This may occur
     32 	due to GCC 7.5 update, GCC 8.4 move to gcc.old, or the upcoming
     33 	GCC 9 upgrade.
     34 
     35 20200614:
     36 	blacklist* has been renamed to blocklist*. postinstall(8)
     37 	should handle the migration
     38 
     39 20200601:
     40 	Due to a mistake in LIBISPRIVATE handling, .so libraries were
     41 	created in the build directories and need cleaning.
     42 
     43 20200311:
     44 	GCC 8 ports will need cleaning in src/tools/gcc and
     45 	src/external/gpl3/gcc due to GCC 8.4 update.
     46 
     47 20191118:
     48 	More architectures were switched to gcc8:
     49 	    i386, ia64 powerpc64, sparc, sparc64, arm
     50 	The same comments as in 20191022 apply.
     51 
     52 20191112:
     53 	The LLVM update requires a clean rebuild for all architectures using
     54 	LLVM during the tools build phase (i386, amd64, aarch64).
     55 
     56 20191022:
     57 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
     58 	In-place ("expert mode", build.sh -E) builds are not supported
     59 	when going from a GCC 7 userland to GCC 8. Do a regular
     60 	build to a different DESTDIR (or preferably: build.sh -U) at least
     61 	once and install sets, or download comp.{tar.xz,tgz} from the
     62 	daily builds and install that before doing the next in-place build.
     63 
     64 20191001:
     65 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
     66 	old builds with GCC 7 output now uses GCC 8.  Clean this
     67 	directory, and also clean src/external/gpl3/gcc.
     68 
     69 20190903:
     70 	Files with names that coincide with existing files' names on
     71 	case-insensitive file systems were inadvertently committed, for
     72 	radeon GPU firmware.  We cannot mark these as obsolete for
     73 	postinstall to fix, so if you updated src since 2019-08-26, and
     74 	ran build.sh distribution or ran build.sh release, you must
     75 	manually delete the following files in your DESTDIR (which is
     76 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
     77 	them:
     78 
     79 		/libdata/firmware/radeon/bonaire_ce.bin
     80 		/libdata/firmware/radeon/bonaire_mc.bin
     81 		/libdata/firmware/radeon/bonaire_me.bin
     82 		/libdata/firmware/radeon/bonaire_mec.bin
     83 		/libdata/firmware/radeon/bonaire_pfp.bin
     84 		/libdata/firmware/radeon/bonaire_rlc.bin
     85 		/libdata/firmware/radeon/bonaire_sdma.bin
     86 		/libdata/firmware/radeon/bonaire_smc.bin
     87 		/libdata/firmware/radeon/bonaire_uvd.bin
     88 		/libdata/firmware/radeon/hainan_ce.bin
     89 		/libdata/firmware/radeon/hainan_mc.bin
     90 		/libdata/firmware/radeon/hainan_me.bin
     91 		/libdata/firmware/radeon/hainan_pfp.bin
     92 		/libdata/firmware/radeon/hainan_rlc.bin
     93 		/libdata/firmware/radeon/hainan_smc.bin
     94 		/libdata/firmware/radeon/hawaii_ce.bin
     95 		/libdata/firmware/radeon/hawaii_mc.bin
     96 		/libdata/firmware/radeon/hawaii_me.bin
     97 		/libdata/firmware/radeon/hawaii_mec.bin
     98 		/libdata/firmware/radeon/hawaii_pfp.bin
     99 		/libdata/firmware/radeon/hawaii_rlc.bin
    100 		/libdata/firmware/radeon/hawaii_sdma.bin
    101 		/libdata/firmware/radeon/hawaii_smc.bin
    102 		/libdata/firmware/radeon/kabini_ce.bin
    103 		/libdata/firmware/radeon/kabini_me.bin
    104 		/libdata/firmware/radeon/kabini_mec.bin
    105 		/libdata/firmware/radeon/kabini_pfp.bin
    106 		/libdata/firmware/radeon/kabini_rlc.bin
    107 		/libdata/firmware/radeon/kabini_sdma.bin
    108 		/libdata/firmware/radeon/kaveri_ce.bin
    109 		/libdata/firmware/radeon/kaveri_me.bin
    110 		/libdata/firmware/radeon/kaveri_mec.bin
    111 		/libdata/firmware/radeon/kaveri_mec2.bin
    112 		/libdata/firmware/radeon/kaveri_pfp.bin
    113 		/libdata/firmware/radeon/kaveri_rlc.bin
    114 		/libdata/firmware/radeon/kaveri_sdma.bin
    115 		/libdata/firmware/radeon/mullins_ce.bin
    116 		/libdata/firmware/radeon/mullins_me.bin
    117 		/libdata/firmware/radeon/mullins_mec.bin
    118 		/libdata/firmware/radeon/mullins_pfp.bin
    119 		/libdata/firmware/radeon/mullins_rlc.bin
    120 		/libdata/firmware/radeon/mullins_sdma.bin
    121 		/libdata/firmware/radeon/oland_ce.bin
    122 		/libdata/firmware/radeon/oland_mc.bin
    123 		/libdata/firmware/radeon/oland_me.bin
    124 		/libdata/firmware/radeon/oland_pfp.bin
    125 		/libdata/firmware/radeon/oland_rlc.bin
    126 		/libdata/firmware/radeon/oland_smc.bin
    127 		/libdata/firmware/radeon/pitcairn_ce.bin
    128 		/libdata/firmware/radeon/pitcairn_mc.bin
    129 		/libdata/firmware/radeon/pitcairn_me.bin
    130 		/libdata/firmware/radeon/pitcairn_pfp.bin
    131 		/libdata/firmware/radeon/pitcairn_rlc.bin
    132 		/libdata/firmware/radeon/pitcairn_smc.bin
    133 		/libdata/firmware/radeon/tahiti_ce.bin
    134 		/libdata/firmware/radeon/tahiti_mc.bin
    135 		/libdata/firmware/radeon/tahiti_me.bin
    136 		/libdata/firmware/radeon/tahiti_pfp.bin
    137 		/libdata/firmware/radeon/tahiti_rlc.bin
    138 		/libdata/firmware/radeon/tahiti_smc.bin
    139 		/libdata/firmware/radeon/verde_ce.bin
    140 		/libdata/firmware/radeon/verde_mc.bin
    141 		/libdata/firmware/radeon/verde_me.bin
    142 		/libdata/firmware/radeon/verde_pfp.bin
    143 		/libdata/firmware/radeon/verde_rlc.bin
    144 		/libdata/firmware/radeon/verde_smc.bin
    145 
    146 	We will re-import these radeon firmware images another way
    147 	later.
    148 
    149 20190727:
    150 	The uefi bootloader has gained tftp support and needs a clean
    151 	build. If you do update builds, manually clean its object
    152 	directory by something like:
    153 	cd sys/arch/i386/stand/efiboot && make clean
    154 
    155 20190723:
    156 	The jemalloc allocator in libc is now build without extended
    157 	debugging (for performance reasons). In update builds make sure
    158 	to rebuild it completly, by removing all affected object files,
    159 	including compat builds, something like:
    160 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    161 
    162 20190207:
    163 	GCC 7 switched for many ports.  Update builds are likely to fail.
    164 
    165 20180924:
    166 	A newer OpenSSL version has been imported. If you are doing
    167 	update builds, make sure to remove all old obj dirs, like:
    168 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    169 
    170 20180717:
    171 	On aarch64 int64_t and related types have changed from long long
    172 	to long. This requires recompiling all C++ binaries.
    173 
    174 20180713:
    175 	On amd64 and i386 static binaries are now build position
    176 	independend. This requires recompilation of all object
    177 	files used to create the crunched /rescue binary.
    178 	Clean the rescue directory in your obj directory before
    179 	doing an update build, otherwise linking will fail.
    180 
    181 20180414:
    182 	Existing binutils was migrated to binutils.old.  Manual
    183 	removal of tools/binutils objects directory may be required
    184 	to fix tools build failure.
    185 
    186 20180311:
    187 	bdftopcf was updated and may need cleaning in the
    188 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    189 	link errors.
    190 
    191 20180212:
    192 	between OpenSSL and GCC updates, many things may fail to build.
    193 	any failure that looks like GCC or openssl is best handled by
    194 	a clean destdir and objdir.  Full cleandir and destdir deletion
    195 	is recommended if build failures occur.
    196 
    197 20171225:
    198 	removal of the vadvise syscall requires manual removal of all
    199 	associated files from the libc build object directory (including
    200 	the .depend files) - a command like:
    201 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    202 	For architectures that support multiple "compat" binary targets,
    203 	you'll need to cleanup both the regular libc directory and the
    204 	compat ones (the above command will do that).
    205 
    206 20171010:
    207 	a change to the build structure of external/bsd/acpica/bin/iasl
    208 	means that its objdir (or *.d and .depend at least) might need
    209 	to be manually removed - or a build done once without -u.
    210 
    211 20170822:
    212 	a new version of GMP has been imported and probably
    213 	will break parts of builds related to themselves or GCC, both
    214 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    215 	and MPC objdirs or build once without -u.
    216 
    217 20170816:
    218 	a new version of MPFR and MPC have been imported and probably
    219 	will break parts of builds related to themselves or GCC, both
    220 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    221 	and MPC objdirs or build once without -u.
    222 
    223 20170402:
    224 	a new version of dhcpcd has been imported, which does not support
    225 	update builds from the previous version. Remove your
    226 	external/bsd/dhcpcd object dir or build once without -u.
    227 
    228 20170211:
    229 	a new terminfo database has been imported.
    230 	The structure of it has changed slightly from prior versions and
    231 	an updated tic tool is required.
    232 	If you build.sh, don't use -u
    233 
    234 20170207:
    235 	various arch dependent libc/exect.S files were removed
    236 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    237 	if it exists) or do a clean build.
    238 	(This is a bug in the make system, it should be corrected without
    239 	human intervention, but isn't.)
    240 
    241 20170104:
    242 	xinput build options have changed.
    243 	Remove the obj directory (external/mit/xorg/bin/xinput)
    244 	if you build.sh -u
    245 
    246 20170103:
    247 	a new version of flex has been imported.
    248 	Remove the file from obj (external/bsd/flex)
    249 	if you build.sh -u
    250 
    251 20161014:
    252 	a new version of OpenSSL has been imported.
    253 	Remove the files from obj (crypto/external/bsd/openssl) 
    254 	if you build.sh -u
    255 
    256 20161009:
    257 	a new version of dhcpcd has been imported with slightly changed
    258 	build infrastructure. When doing a build.sh -u this requires
    259 	pruning the external/bsd/dhcpcd objdir.
    260 
    261 20160914:
    262 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    263 	ports in using xorg-server 1.18. This requires a clean destdir
    264 	and a clean objdir.
    265 
    266 20160527:
    267 	i386 needs a full cleandir or objdir deletion because PIE has
    268 	been enabled. (see the amd64 entry two down for further info)
    269 
    270 20160418:
    271 	libedit needs manual removal of all autogenerated files since
    272 	some of them are not autogenerated anymore. Remember that there
    273 	might be two copies of libedit if your platform builds "compat".
    274 
    275 20160410:
    276 	amd64 needs full "make cleandir" or deletion of objdir now that
    277 	PIE has been enabled for amd64.  PIE, or position-independent
    278 	executables, means all code, including executables and not just
    279 	shared libraries, is position-independent and hence able to be
    280 	relocated by ASLR, address space layout randomization.
    281 
    282 	The change was made in Makefile variables for compiler and
    283 	linker flags, for which make(1) does not record dependencies,
    284 	hence it is unable to detect that all .o files need rebuilding.
    285 
    286 	Partial rebuilds with some modified source files will likely
    287 	fail when linking executables, since the linker refuses to mix
    288 	position-independent code with position-dependent code in
    289 	position-independent executables:
    290 
    291 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    292 
    293 20160401:
    294 	Ports switching to GCC 5.3 will need a full "make cleandir".
    295 	Some people have found that cleandir is not sufficient, so if
    296 	in doubt delete the entire object directory tree for gcc.
    297 
    298 20160306:
    299 	NetBSD's regexp implementation is now part of libnbcompat.
    300 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    301 	non-NetBSD hosts if linked with stale object files produced
    302 	while they included a non-NetBSD regex.h.
    303 	In any case, you should "make cleandir" at least these tools
    304 	before updating your toolchain.
    305 
    306 20160125:
    307 	Dtrace has been enabled by default on some architectures.
    308 	When doing an update build, make sure to clean the etc/mtree
    309 	object directory before starting the build - otherwise the
    310 	needed directories in destdir will not be created.
    311 	An easy way to do this is:
    312 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    313 
    314 20150818:
    315 	New acpica requires "make cleandir" in src/external/bsd/acpica
    316 	again.
    317 
    318 20150413:
    319 	New acpica requires "make cleandir" and reinstalling yacc
    320 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    321 	also "make cleandir" in /usr/src/external/bsd/acpica.
    322 
    323 20150404:
    324 	Lint changes require a full rebuild of the tool, so make
    325 	sure to build without -u option to build.sh, or manually
    326 	do a make cleandir in src/tools/lint1 and
    327 	src/usr.bin/xlint.
    328 
    329 20150310:
    330 	Improvements to openssl for arm mean that update builds of
    331 	the openssl libraries will fail. A make cleandir in
    332 	external/bsd/openssl/lib is needed
    333 
    334 20141026:
    335 	A mishap during the import of pppd may cause your corruption
    336 	in your cvs directory if you happened to do a cvs update
    337 	during a short period of time. To fix, just remove the
    338 	directory src/external/bsd/ppp/dist/pppd completely
    339 	and let cvs restore it on next update.
    340 
    341 20140721:
    342 	The src/external/mit/lua/src directory was accidentally created
    343 	and then deleted in the CVS repository.  If you get errors like
    344 
    345 	cvs [update aborted]: cannot open directory
    346 	/cvsroot/src/external/mit/lua/src: No such file or directory
    347 
    348 	then delete your local copy of that directory tree and try again.
    349 
    350 20140530:
    351 	ARM eABI switched to DWARF based exception handling. This requires
    352 	rebuilding all C++ code. It is strongly advised to do a clean build.
    353 
    354 20140131:
    355 	The new compiler_rt/libc integration moved a few things. It is strongly
    356 	advised to do a clean build. At least lib/libc, the compat version(s)
    357 	of libc, libkern, rump and the kernels need to be cleaned.
    358 
    359 20131227:
    360 	1. The new ntpd runs in a restricted mode to prevent amplification
    361 	   attacks. If you need ntpdc to work you need to explicitly enable
    362 	   mode7 in your config file. Make sure you put the necessary restrict
    363 	   statements to avoid being exposed.
    364 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    365 	   to make clean in libc
    366 
    367 20131129:
    368 	The GMP sources were updated, and builds will likely fail without
    369 	cleaning their build trees for both tools and in-tree, like below.
    370 
    371 20131128:
    372 	The MPC and MPFR sources were updated, and builds may require their
    373 	tools and in-tree directories cleaned for successful updates.
    374 
    375 20130605:
    376 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    377 	to IPSEC (and the older IPSEC version removed).
    378 
    379 20130605:
    380 	Previous freetype installations eroneously installed private
    381 	header files. If you are building against a non-empty $DESTDIR,
    382 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    383 
    384 20130531:
    385 	The xdm update may cause build failure due to xdm.man being
    386 	in the obj tree.  Make sure to ensure any like this:
    387 		nbmake: nbmake: don't know how to make xdm.man. Stop
    388 	is fixed by deleting the xdm.man in the obj tree.
    389 
    390 20130530:
    391 	Updates of many xsrc packages will leave old .pc files around.
    392 	Best to clean out the xsrc objdir entirely before rebuilds.
    393 
    394 20130301:
    395 	The removal of netiso requires manual removal of /usr/include/netiso
    396 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    397 
    398 20120726:
    399 	The update of OpenSSL requires cleaning both the OpenSSL build
    400 	directory and DESTDIR.  *Even non-update builds require cleaning
    401 	DESTDIR.* Builds done without taking these steps may fail, or in
    402 	some cases may succeed and install broken OpenSSL libraries that
    403 	cause third-party software to link incorrectly and/or crash.
    404 
    405 20120507:
    406 	The database schema for makemandb was changed.  You will
    407 	need to update the database using 'makemandb -f' or wait
    408 	for the next weekly run to fix it.
    409 
    410 20120319:
    411 	sys/conf/Makefile.kern.inc has been modified to adjust the
    412 	size of db_symtab automatically.  You need to update dbsym in
    413 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    414 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    415 	mk.conf.
    416 
    417 20120216:
    418 	Default for MKCATPAGES changed to NO.  Update builds will fail
    419 	unless DESTDIR is cleaned manually.  If you built between 20120207
    420 	and 20120216, daily and weekly could have created an unreadable
    421 	/var/db/man.db index for apropos.  Running makemandb -f or
    422 	the next run of weekly will fix it.
    423 
    424 20111227:
    425 	If you built between 20111225 and 20111227 you need to remove
    426 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    427 	bump has been reverted.
    428 
    429 20111125:
    430 	The "rnd" pseudodevice has been added to sys/conf/std, which
    431 	means it should no longer be explicitly listed in kernel
    432 	configuration files.  The line "pseudo-device rnd" should be
    433 	removed from any custom kernel config files users may have.
    434 
    435 20111119:
    436 	A problem with the datastructures used by the rndctl(8)
    437 	utility (pointers in datastructures in an array, making 32->64
    438 	bit compatibility very painful) has been fixed in a
    439 	non-backwards-compatible way.  If you replace your kernel,
    440 	replace your rndctl executable too.
    441 
    442 20111001:
    443 	the prop_*_send_syscall() functions from proplib(3) have been
    444 	changed and their new version is not backward compatible with the old
    445 	one.  So ensure that all consumers of these functions (currently:
    446 	quota2 code and its tests) are updated together with the new lib.
    447 
    448 20110817:
    449 	sparc has been changed to use GCC 4.5.3, so any objdir or
    450 	DESTDIR for them should be deleted before updating.
    451 
    452 20110806:
    453 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    454 	objdir or DESTDIR for them should be deleted before updating.
    455 
    456 20110805:
    457 	The update to GCC 4.5.3 requires a non-trivial portion of
    458 	the tree to be cleaned.  Best to delete both objdir and
    459 	DESTDIR before running this update.  So far, only the
    460 	sparc64, mips and powerpc platforms have changed.
    461 
    462 20110803:
    463 	The layout of external/public-domain/xz has changed.  To do an
    464 	update build you will have to remove the contents of the OBJDIR
    465 	for external/public-domain/xz/bin by hand as the xz entry there
    466 	is now a directory.
    467 
    468 20110410:
    469 	The configuration of src/tools/gcc has changed.  To do an
    470 	update build you have to clean both tools/binutils and
    471 	tools/gcc by hand.
    472 
    473 20110328:
    474 	Building the Xorg binary was moved into a subdirectory to fix
    475 	ordering issues with "make all".  It may be necessary to remove
    476 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    477 	if your update build fails, as the "Xorg" entry there is now a
    478 	directory.
    479 
    480 20110121:
    481 	Assembler files no longer use -traditional-cpp.  This can break
    482 	the build of individual parts of the tree.  This is handled
    483 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    484 	and re-run config(1) for any kernel configurations as needed.
    485 
    486 20101217:
    487 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    488 	by default.  It may be necessary to manually update passwd(5) and
    489 	group(5) in order to make the program work with existing setups.
    490 
    491 20101125:
    492 	The latest changes to setenv(3) dissallow setting environment
    493 	variables with names that contain '='.  Revision 1.18 of env.c
    494 	assumed that this was allowed.  Installing a new libc with an
    495 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    496 	break which affects the autoconf tests for dependency finding,
    497 	so building gcc will end up printing:
    498 	    checking dependency style of gcc... none
    499 	    configure: error: no usable dependency style found
    500 	Fix it by rebuilding and re-installing env.
    501 
    502 20101119:
    503 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    504 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    505 	have any build problems with xsrc, or problems with mismatched
    506 	versions between xorg-server and drivers.
    507 
    508 20100604:
    509 	The update of ATF to 0.9 causes old tests written in shell to fail
    510 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    511 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    512 	trees by hand.
    513 
    514 20100522:
    515 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    516 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    517 	build problems with xsrc.
    518 
    519 20100522:
    520 	private section of <ctype.h> was splitted, and now mklocale(1)
    521 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    522 
    523 20100520:
    524 	The location of the xkb compiled descriptions has changed.  Please
    525 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    526 
    527 20100222:
    528 	The shared objects file extension has been changed from .so to
    529 	.pico, in order to avoid conflicts with shared libraries names
    530 	libXX.so.  All now stale regular .so files can be removed from
    531 	your object directories.
    532 
    533 20100204:
    534 	The termcap database has been removed from the sources,
    535 	but has not been marked obsolete so it is not removed
    536 	from the system when upgrading.
    537 	As such, you will need to remove them from your object
    538 	and destination directories.
    539 
    540 20091101:
    541         After updating, it may be necessary to make the 'cleandir'
    542         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    543         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    544         src/tools/lex/ and src/usr.bin/lex/.
    545 
    546 20091001:
    547 	On amd64 you must rebuild tools (to get the new binutils)
    548 	before building a kernel, or the build fails on cpufunc.S.
    549 
    550 20091001:
    551 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    552 	symlink, failing the build.  Delete the link, and the subdir
    553 	it is in, and retry your build.
    554 
    555 20090718:
    556 	libc build changed so that strchr() provides the extra entry
    557 	point for index().  Update build of libc.a (and libc_pic.a)
    558 	may fail because the archive contains the unwanted index.o.
    559 	(Similarly for strrchr() and rindex().)
    560 
    561 20090709:
    562 	Native Xorg was upgraded again.  Builds will probably fail again
    563 	without a clean objdir, at least for src/external/mit/xorg.
    564 
    565 20090616:
    566 	Native Xorg was upgraded.  Builds will need a clean objdir for
    567 	src/external/mit/xorg.  Upgrading a system from sets will not
    568 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    569 	subdirectory has been changed into a file, and this needs to
    570 	be manually "rm -r"'ed before installing xbase.tgz.
    571 
    572 20090501:
    573 	Several new functions were added to string.h/libc, and this
    574 	can cause autoconf problems during the tool build for people
    575 	who fail to clean out their tools objects properly.  If you
    576 	note messages about stpcpy, stpncpy or strnlen accompanying a
    577 	failure during the tool build, clean out all your tools
    578 	objects and start again.
    579 
    580 20090325:
    581 	The i386 port was switched to i486 default toolchain.  This requires
    582 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    583 
    584 20090126:
    585 	The __posix_fadvise50 system call changed assembly stub type.  You
    586 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    587 	to avoid using the old assembly stub.
    588 
    589 20090202:
    590 	pkg_install now depends on the pkgdb cache for automatic conflict
    591 	detection.  It is recommented to rebuild the cache with
    592 	``pkg_admin rebuild''.
    593 
    594 20090110:
    595 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    596 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    597 	   This is needed even in the MODULAR kernel because there is
    598 	   conditionally compiled code in rtsock.c.
    599 	2. make sure build.sh completes and the binaries in a chroot work
    600 	   before installing.
    601 	3. If you don't use build.sh and you build directly to root, and
    602 	   your build breaks in the middle, don't despair.  Make sure headers
    603 	   are installed properly, and start building libraries first libc
    604 	   and libutil, install them and then continue building all the
    605 	   libraries in src/lib and src/gnu/lib and install them.  Once
    606 	   the new libraries are installed, you can restart the build.
    607 	4. If you compile packages and you notice link time warnings,
    608 	   rebuild the required packages to update their shared libraries.
    609 	   Any package you rebuild will require rebuilding all the packages
    610 	   that depend on it.
    611 	5. Next time you run pwd_mkdb with the new binary, the file
    612 	   will be upgraded and it will not be backwards compatible.
    613 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    614 	   lastlogx(5)) have been versioned, and there is a heuristic
    615 	   for utmp.  You are better off removing the old files after
    616 	   upgrading.  The automated clearing of /var/run during
    617 	   boot, and the automated rotating of files in /var/log by
    618 	   newsyslog(8), may mean that you do not have to remove the
    619 	   files manually.
    620 	7. The optional accounting file (/var/account/acct, see
    621 	   accton(8)) has not been versioned, and will need to be
    622 	   removed.  The automatic rotation of the accounting file by
    623 	   /etc/daily limits the bad consequences of failure to remove
    624 	   the file.
    625 	8. Application software that writes time_t to binary files on
    626 	   disk will break or need attention.  Most notably: if you are
    627 	   using PostgreSQL < 8.4, you need to dump your databases,
    628 	   rebuild PostgreSQL with the new time_t, then restore.
    629 
    630 20081219:
    631 	config(1) has been updated, and one of the files it creates -
    632 	swapnetbsd.o - has changed format.  You need to rebuild config
    633 	(done automatically by build.sh) and then you need to rerun
    634 	config on all kernel configuration files before rebuilding those
    635 	kernels.
    636 
    637 20081205:
    638 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    639 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    640 	set and will appear as extra files for MKX11=no update builds.
    641 
    642 20081122:
    643 	On i386, various kernel options(4) in GENERIC including
    644 	file systems have been disabled and moved into kernel modules.
    645 	Before trying a new GENERIC kernel, you have to prepare the
    646 	following files as well as a new GENERIC kernel:
    647 
    648 	- build and install kernel modules from src/sys/modules
    649 
    650 	- install the latest bootloader, which will load a module
    651 	  for the file system from which the kernel is loaded automatically
    652 
    653 	If you have to load your kernel from a file system which is not of
    654 	the same type as the root file system, you have to load the necessary
    655 	file system module manually on the boot prompt or in the boot.cfg file.
    656 
    657 20080827:
    658 	If you built and installed a libc from sources between
    659 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    660 	which results in false errors reported by lint(1).
    661 	Since this breaks the libc build itself, manual help is
    662 	needed -- lint must be disabled temporarily, e.g.:
    663 	  $ (cd lib/libc && make MKLINT=no dependall install)
    664 
    665 20080813:
    666 	MKDEBUG build was broken because the .depend files did not know
    667 	about .go files.  You need to remove all .depend files and rebuild.
    668 
    669 20080802:
    670 	A regression in binary compatibility for pthread_mutex_t has
    671 	been fixed.  Unfortunately, the price is breaking compatibility
    672 	for -current.
    673 
    674 	Threaded programs (using libpthread) and C++ programs (using
    675 	libstdc++) compiled after 20070907 and before 20080802 need to
    676 	be recompiled.
    677 
    678 	One way to find affected pkgsrc packages:
    679 
    680 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    681 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    682 
    683 20080731:
    684 	WAPBL (metadata journaling support) has been added, but at this
    685 	time isn't backwards compatible with pre-WAPBL aware kernels
    686 	and userland (fsck_ffs in particular).  Please make sure you
    687 	don't use a journaled filesystem with an older kernel/userland,
    688 	especially an uncleanly mounted journaled filesystem.  WAPBL
    689 	also requires the super block to be in the UFS2 format.  You
    690 	can use fsck_ffs -c 4 to update the superblock format.
    691 
    692 20080721:
    693 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    694 	isn't defined.
    695 
    696 20080531:
    697 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    698 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    699 	utility needs to be rebuilt and reinstalled as older binaries
    700 	won't work correctly.  The following sequence of commands:
    701 
    702 	  $ (cd sys/sys/ && nbmake-$arch includes)
    703 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    704 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    705 
    706 	leaves new drvctl utility in sbin/drvctl build directory.
    707 
    708 20080503:
    709 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    710 
    711 20080521:
    712 	For a while, unprivileged UPDATE builds would fail to
    713 	succeed at the checkflist stage, complaining that
    714 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    715 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    716 	If you already hit this problem, update the .mk file,
    717 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    718 
    719 20080303:
    720 	Linker warnings are now fatal if $WARNS>0.
    721 
    722 20080126:
    723 	The posix_fadvise system call has been changed from an assembly
    724 	stub, to a c file that calls an assembly stub.  You need to
    725 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    726 	avoid using the old assembly stub.
    727 
    728 20071209:
    729 	The acpiec(4) driver has been split into two attachments.  If you
    730 	get ACPI errors before the attachment, please update your kernel
    731 	configuration file appropriately or see GENERIC for more details.
    732 
    733 20071115:
    734 	The it(4) driver has been renamed to itesio(4) and the old port
    735 	argument specified in the kernel configuration file is not valid
    736 	anymore.  The itesio(4) driver now uses the Super I/O address port
    737 	rather than the EC address port.  Please update your kernel
    738 	configuration file appropriately or see GENERIC for more details.
    739 
    740 20071028:
    741 	The pccons(4) driver has been removed from the NetBSD/shark port.
    742 	You need to update any custom kernel configuration file you have
    743 	to remove any references to pccons (which includes removing the
    744 	now useless XSERVER option) and replace them with the correct
    745 	entries for the wscons driver.  See the GENERIC configuration file
    746 	for more details.
    747 
    748 20070913:
    749 	A latent bug in dhclient/dhcpd that caused it to be unable to
    750 	enumerate interfaces was fixed.  The bug began to cause
    751 	problems after 20070911 when the kernel's SIOCGIFCONF
    752 	implementation was repaired.  From 20070529 to 20070911 racoon
    753 	could not enumerate interfaces.  (These are noted because
    754 	normal kernel/userspace version matching hygiene is not
    755 	sufficient to avoid this problem.)  Ensure that both kernel
    756 	and userland are from after 20070913.
    757 
    758 20070703:
    759 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    760 	calls the target-specific strip program, and the logic to pass
    761 	down STRIP from make has been removed.  This requires a
    762 	re-installation of tools.
    763 
    764 20070422:
    765 	The way OS emulations lookup filenames inside the emulation root
    766 	has been changed.  Rather than modify the pathname (and copy back
    767 	to userspace) namei() and lookup() directly check the emulation
    768 	root.  One side effect is that absolute symlinks inside the emulated
    769 	root file system will be relative to that file system - unless they
    770 	start /../ this is useful when the emulated root is a real install
    771 	that has such links.
    772 	This might affect symlinks that have been added to reference outside
    773 	the emulated root.
    774 
    775 20070412:
    776 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    777 	instead.  See the GENERIC32_IP3x kernel configuration for an
    778 	example.
    779 
    780 20070319:
    781         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    782         on many platforms due to incorrect flags settings.  If you
    783         updated and built after about 20070315, do "nbmake-$arch
    784 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    785 	rebuild of object files that might have been built
    786 	incorrectly, and ensure that you have at least
    787 	src/lib/libc/Makefile 1.130.
    788 
    789 20070210:
    790         src/sys/sys/{sa.h,savar.h} were removed.
    791           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    792               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    793         will allow dependencies on those files to get get rebuilt
    794 
    795 20070209:
    796         The threading model was changed when the newlock2 branch
    797         was merged to NetBSD-current.  If you boot with a new
    798         kernel (version 4.99.10), then you also need a new pthread
    799         library (/usr/lib/libpthread.so.0.7).  If you boot with
    800         an old kernel, then you need the old pthread library
    801         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    802         the pthread library in sync, old threaded applications should
    803         continue to work with an old or new kernel.  Note that named(8)
    804 	is the only threaded application in the base system.
    805 
    806 20061214:
    807 	Following the move of string_to_flags() and flags_to_string()
    808 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    809 	will need to do a "make cleandir" in
    810 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    811 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    812 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    813 		as the installation images in distrib/
    814 	in order to excise stale references to the old stat_flags.h header
    815 	file in the ls sources -- stat_flags.h has been removed.
    816 
    817 20061108:
    818 	The configure script used in the src/tools/gcc compiler has been
    819 	changed to indicate that our libc has ssp support built-in and
    820 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    821 	make clean in src/tools/gcc first to rebuild the compiler.
    822 
    823 20061009:
    824 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    825 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    826 
    827 20060814:
    828 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    829 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    830 	kernel configuration for an example.  X servers from the last
    831 	few years should cope.
    832 
    833 20060703:
    834 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    835 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    836 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    837 
    838 20060627:
    839 	socket(2) has changed, and its system call has been versioned.
    840 	For userlands with the old version of socket(2), make sure that
    841 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    842 	errors will result.
    843 
    844 Hints for a more successful build:
    845 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    846     Use build.sh, but do not use its "expert mode":
    847 	This will automatically build the tools in the
    848 	   correct order, and it will keep the tools and the
    849 	   new build products from interfering with the running
    850 	   system.  This will allow you to ignore most of the
    851 	   other advice in this file.
    852     Build a new kernel first:
    853 	This makes sure that any new system calls or features
    854 	   expected by the new userland will be present.  This
    855 	   helps to avoid critical errors when upgrading.
    856     Use object directories:
    857 	This helps to keep stale object
    858 	   files from polluting the build if a Makefile "forgets"
    859 	   about one.  It also makes it easier to clean up after
    860 	   a build.  It's also necessary if you want to use the
    861 	   same source tree for multiple machines.
    862 	   To use object directories with build.sh:
    863 	    a) invoke build.sh with the "-M" or "-O" options.
    864 	   To use object directories without using build.sh:
    865 	    a) cd /usr/src ; make cleandir
    866 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    867 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    868 	    d) cd /usr/src ; make build
    869 	   Note that running "make obj" in a directory will create
    870 	   in obj.$MACHINE directory.
    871     Build to a DESTDIR:
    872 	This helps to keep old installed files (especially libraries)
    873 	   from interfering with the new build.
    874 	   To build to a DESTDIR with build.sh, use the "-D" option.
    875 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    876 	   environment variable before running make build.  It should be
    877 	   set to the pathname of an initially empty directory.
    878 	   Problems: if you do not use build.sh, you might need to
    879 		update critical utilities without using DESTDIR since
    880 		nothing is executed from what is installed in DESTDIR.
    881 		(See critical utils, below.)
    882     Build often:
    883 	This keeps critical utilities current enough to not choke
    884 	on any other part of the source tree that depends on up to
    885 	date functionality.  If you use build.sh, you should not have
    886 	this problem.
    887 
    888 What to do if things don't work:
    889 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    890 When things don't work there are usually a few things that commonly
    891 should be done.
    892     1)	make includes
    893 	This should be done automatically by make build.
    894     2)  cd share/mk && make install
    895 	Again, automatically done by make build.
    896 
    897 Failsafe rebuild of a small part of the tree:
    898 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    899 To make sure you rebuild something correctly you want to do
    900 something like the following:
    901     1)  Make sure the includes and .mk files are up to date.
    902     2)  Make sure any program used to build the particular
    903 	utility is up to date.  (yacc, lex, etc...)
    904     3)  cd ...path/to/util...
    905 	make cleandir
    906 	rm ...all obj directories...
    907 	make cleandir			# yes, again
    908 	make obj
    909 	make depend && make
    910 
    911 Failsafe rebuild of the entire tree:
    912 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    913 If you really want to make sure the source tree is clean and
    914 ready for a build try the following.  Note that sourcing /etc/mk.conf
    915 (a make(1) Makefile) in this manner is not right, and will not work
    916 for anyone who uses any make(1) features in /etc/mk.conf.
    917 
    918 ---cut here---
    919 #!/bin/sh
    920 . /etc/mk.conf
    921 
    922 if [ -z $NETBSDSRCDIR ] ; then
    923     NETBSDSRCDIR=/usr/src
    924 fi
    925 if [ \! -d $NETBSDSRCDIR ] ; then
    926     echo Unable to find sources
    927     exit 1
    928 fi
    929 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    930 
    931 if [ -z $BSDOBJDIR ] ; then
    932     BSDOBJDIR=/usr/obj
    933 fi
    934 if [ -d $BSDOBJDIR ] ; then
    935     rm -rf $BSDOBJDIR
    936 fi
    937 
    938 cd $NETBSDSRCDIR && make cleandir
    939 
    940 ---cut here---
    941 
    942 Critical utilities:
    943 ^^^^^^^^^^^^^^^^^^^
    944 	usr.bin/compile_et
    945 	usr.bin/make
    946 	usr.bin/yacc
    947 	usr.bin/lex
    948 	usr.bin/xlint
    949 	usr.bin/config
    950 
    951 Other problems and possible solutions:
    952 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    953 Symptom:Complaints involving a Makefile.
    954 Fix:	Rebuild usr.bin/make:
    955 	cd usr.bin/make && make && make install
    956 	Or, a failsafe method if that doesn't work:
    957 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    958 
    959 Fix:	Make sure .mk files are up to date.
    960 	cd share/mk && make install
    961 
    962 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    963 Fix:	Rebuild usr.bin/config
    964 
    965 Symptom:
    966 Fix:	Rebuild usr.bin/yacc
    967 
    968 Symptom:
    969 Fix:	Rebuild usr.bin/lex
    970 
    971 Symptom:
    972 Fix:	rm /usr/lib/libbfd.a
    973 
    974 Symptom:Obsolete intermediate files are used during compilation
    975 Fix:	Try the following sequence of commands in the directory in question.
    976 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    977 	(If you built the tree without "make obj" in the past, obsolete files
    978 	may remain.  The command tries to clean everything up)
    979 
    980 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
    981 	pointer type
    982 Fix:	Rebuild and install usr.bin/menuc
    983 
    984 Symptom:mklocale not found during build in share/locale/ctype
    985 Fix:	Build and install usr.bin/mklocale
    986 
    987 Symptom:undefined reference to `__assert13' or `__unsetenv13'
    988 Fix:    Rebuild and install lib/libc
    989 
    990 Symptom:usr.bin/config fails to build.
    991 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
    992 
    993 Symptom:undefined reference to `getprogname' or `setprogname'
    994 Fix:    Rebuild and install lib/libc
    995 
    996 Symptom:lint does not understand the '-X' option
    997 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
    998 
    999 Symptom:Update build fails in src/tools/gcc complaining that a variable
   1000 	(e.g. CPPFLAGS) has changed since the previous run.
   1001 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
   1002 
   1003 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
   1004 	No such file or directory.
   1005 Cause:	If a directory is created by mistake, then it is sometimes
   1006 	deleted from the CVS repository using administrative commands
   1007 	that bypass the normal cvs access controls.  If your cvs working tree
   1008 	contains references to a directory that has been deleted on the
   1009 	server in this way, then "cvs update" reports this error.
   1010 Fix:	Recursively delete the affected directory from your working tree
   1011 	and try the update again.
   1012