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UPDATING revision 1.317
      1 $NetBSD: UPDATING,v 1.317 2021/01/09 20:51:08 rillig 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 20201230:
     23 	lint1/ops.c is no longer autogenerated.  If this makes the build
     24 	fail, clean $OBJDIR/tools/*lint* and $OBJDIR/usr.bin/*xlint*.
     25 
     26 20201016:
     27 	MIPS kernel modules have been disabled until they work.  This will
     28 	turn up in extra files in the DESTDIR, which should be cleaned.
     29 
     30 20200925:
     31 	GNU MPC and MPFR have been updated.  At least MPFR needs cleaning
     32 	in both the tools and external dirs.
     33 
     34 20200912:
     35 	GCC 9 has arrived for Arm and x86 platforms, and will be coming
     36 	for several more, as will binutils 2.34.  Clean as required.
     37 
     38 20200907:
     39 	GCC 9 is coming, and binutils has been updated for MIPS.  This
     40 	probably requires cleaning the tools/binutils.
     41 
     42 20200811:
     43 	GCC updates may require cleaning the objdir.  This may occur
     44 	due to GCC 7.5 update, GCC 8.4 move to gcc.old, or the upcoming
     45 	GCC 9 upgrade.
     46 
     47 20200614:
     48 	blacklist* has been renamed to blocklist*. postinstall(8)
     49 	should handle the migration
     50 
     51 20200601:
     52 	Due to a mistake in LIBISPRIVATE handling, .so libraries were
     53 	created in the build directories and need cleaning.
     54 
     55 20200311:
     56 	GCC 8 ports will need cleaning in src/tools/gcc and
     57 	src/external/gpl3/gcc due to GCC 8.4 update.
     58 
     59 20191118:
     60 	More architectures were switched to gcc8:
     61 	    i386, ia64 powerpc64, sparc, sparc64, arm
     62 	The same comments as in 20191022 apply.
     63 
     64 20191112:
     65 	The LLVM update requires a clean rebuild for all architectures using
     66 	LLVM during the tools build phase (i386, amd64, aarch64).
     67 
     68 20191022:
     69 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
     70 	In-place ("expert mode", build.sh -E) builds are not supported
     71 	when going from a GCC 7 userland to GCC 8. Do a regular
     72 	build to a different DESTDIR (or preferably: build.sh -U) at least
     73 	once and install sets, or download comp.{tar.xz,tgz} from the
     74 	daily builds and install that before doing the next in-place build.
     75 
     76 20191001:
     77 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
     78 	old builds with GCC 7 output now uses GCC 8.  Clean this
     79 	directory, and also clean src/external/gpl3/gcc.
     80 
     81 20190903:
     82 	Files with names that coincide with existing files' names on
     83 	case-insensitive file systems were inadvertently committed, for
     84 	radeon GPU firmware.  We cannot mark these as obsolete for
     85 	postinstall to fix, so if you updated src since 2019-08-26, and
     86 	ran build.sh distribution or ran build.sh release, you must
     87 	manually delete the following files in your DESTDIR (which is
     88 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
     89 	them:
     90 
     91 		/libdata/firmware/radeon/bonaire_ce.bin
     92 		/libdata/firmware/radeon/bonaire_mc.bin
     93 		/libdata/firmware/radeon/bonaire_me.bin
     94 		/libdata/firmware/radeon/bonaire_mec.bin
     95 		/libdata/firmware/radeon/bonaire_pfp.bin
     96 		/libdata/firmware/radeon/bonaire_rlc.bin
     97 		/libdata/firmware/radeon/bonaire_sdma.bin
     98 		/libdata/firmware/radeon/bonaire_smc.bin
     99 		/libdata/firmware/radeon/bonaire_uvd.bin
    100 		/libdata/firmware/radeon/hainan_ce.bin
    101 		/libdata/firmware/radeon/hainan_mc.bin
    102 		/libdata/firmware/radeon/hainan_me.bin
    103 		/libdata/firmware/radeon/hainan_pfp.bin
    104 		/libdata/firmware/radeon/hainan_rlc.bin
    105 		/libdata/firmware/radeon/hainan_smc.bin
    106 		/libdata/firmware/radeon/hawaii_ce.bin
    107 		/libdata/firmware/radeon/hawaii_mc.bin
    108 		/libdata/firmware/radeon/hawaii_me.bin
    109 		/libdata/firmware/radeon/hawaii_mec.bin
    110 		/libdata/firmware/radeon/hawaii_pfp.bin
    111 		/libdata/firmware/radeon/hawaii_rlc.bin
    112 		/libdata/firmware/radeon/hawaii_sdma.bin
    113 		/libdata/firmware/radeon/hawaii_smc.bin
    114 		/libdata/firmware/radeon/kabini_ce.bin
    115 		/libdata/firmware/radeon/kabini_me.bin
    116 		/libdata/firmware/radeon/kabini_mec.bin
    117 		/libdata/firmware/radeon/kabini_pfp.bin
    118 		/libdata/firmware/radeon/kabini_rlc.bin
    119 		/libdata/firmware/radeon/kabini_sdma.bin
    120 		/libdata/firmware/radeon/kaveri_ce.bin
    121 		/libdata/firmware/radeon/kaveri_me.bin
    122 		/libdata/firmware/radeon/kaveri_mec.bin
    123 		/libdata/firmware/radeon/kaveri_mec2.bin
    124 		/libdata/firmware/radeon/kaveri_pfp.bin
    125 		/libdata/firmware/radeon/kaveri_rlc.bin
    126 		/libdata/firmware/radeon/kaveri_sdma.bin
    127 		/libdata/firmware/radeon/mullins_ce.bin
    128 		/libdata/firmware/radeon/mullins_me.bin
    129 		/libdata/firmware/radeon/mullins_mec.bin
    130 		/libdata/firmware/radeon/mullins_pfp.bin
    131 		/libdata/firmware/radeon/mullins_rlc.bin
    132 		/libdata/firmware/radeon/mullins_sdma.bin
    133 		/libdata/firmware/radeon/oland_ce.bin
    134 		/libdata/firmware/radeon/oland_mc.bin
    135 		/libdata/firmware/radeon/oland_me.bin
    136 		/libdata/firmware/radeon/oland_pfp.bin
    137 		/libdata/firmware/radeon/oland_rlc.bin
    138 		/libdata/firmware/radeon/oland_smc.bin
    139 		/libdata/firmware/radeon/pitcairn_ce.bin
    140 		/libdata/firmware/radeon/pitcairn_mc.bin
    141 		/libdata/firmware/radeon/pitcairn_me.bin
    142 		/libdata/firmware/radeon/pitcairn_pfp.bin
    143 		/libdata/firmware/radeon/pitcairn_rlc.bin
    144 		/libdata/firmware/radeon/pitcairn_smc.bin
    145 		/libdata/firmware/radeon/tahiti_ce.bin
    146 		/libdata/firmware/radeon/tahiti_mc.bin
    147 		/libdata/firmware/radeon/tahiti_me.bin
    148 		/libdata/firmware/radeon/tahiti_pfp.bin
    149 		/libdata/firmware/radeon/tahiti_rlc.bin
    150 		/libdata/firmware/radeon/tahiti_smc.bin
    151 		/libdata/firmware/radeon/verde_ce.bin
    152 		/libdata/firmware/radeon/verde_mc.bin
    153 		/libdata/firmware/radeon/verde_me.bin
    154 		/libdata/firmware/radeon/verde_pfp.bin
    155 		/libdata/firmware/radeon/verde_rlc.bin
    156 		/libdata/firmware/radeon/verde_smc.bin
    157 
    158 	We will re-import these radeon firmware images another way
    159 	later.
    160 
    161 20190727:
    162 	The uefi bootloader has gained tftp support and needs a clean
    163 	build. If you do update builds, manually clean its object
    164 	directory by something like:
    165 	cd sys/arch/i386/stand/efiboot && make clean
    166 
    167 20190723:
    168 	The jemalloc allocator in libc is now build without extended
    169 	debugging (for performance reasons). In update builds make sure
    170 	to rebuild it completly, by removing all affected object files,
    171 	including compat builds, something like:
    172 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    173 
    174 20190207:
    175 	GCC 7 switched for many ports.  Update builds are likely to fail.
    176 
    177 20180924:
    178 	A newer OpenSSL version has been imported. If you are doing
    179 	update builds, make sure to remove all old obj dirs, like:
    180 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    181 
    182 20180717:
    183 	On aarch64 int64_t and related types have changed from long long
    184 	to long. This requires recompiling all C++ binaries.
    185 
    186 20180713:
    187 	On amd64 and i386 static binaries are now build position
    188 	independend. This requires recompilation of all object
    189 	files used to create the crunched /rescue binary.
    190 	Clean the rescue directory in your obj directory before
    191 	doing an update build, otherwise linking will fail.
    192 
    193 20180414:
    194 	Existing binutils was migrated to binutils.old.  Manual
    195 	removal of tools/binutils objects directory may be required
    196 	to fix tools build failure.
    197 
    198 20180311:
    199 	bdftopcf was updated and may need cleaning in the
    200 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    201 	link errors.
    202 
    203 20180212:
    204 	between OpenSSL and GCC updates, many things may fail to build.
    205 	any failure that looks like GCC or openssl is best handled by
    206 	a clean destdir and objdir.  Full cleandir and destdir deletion
    207 	is recommended if build failures occur.
    208 
    209 20171225:
    210 	removal of the vadvise syscall requires manual removal of all
    211 	associated files from the libc build object directory (including
    212 	the .depend files) - a command like:
    213 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    214 	For architectures that support multiple "compat" binary targets,
    215 	you'll need to cleanup both the regular libc directory and the
    216 	compat ones (the above command will do that).
    217 
    218 20171010:
    219 	a change to the build structure of external/bsd/acpica/bin/iasl
    220 	means that its objdir (or *.d and .depend at least) might need
    221 	to be manually removed - or a build done once without -u.
    222 
    223 20170822:
    224 	a new version of GMP has been imported and probably
    225 	will break parts of builds related to themselves or GCC, both
    226 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    227 	and MPC objdirs or build once without -u.
    228 
    229 20170816:
    230 	a new version of MPFR and MPC have been imported and probably
    231 	will break parts of builds related to themselves or GCC, both
    232 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    233 	and MPC objdirs or build once without -u.
    234 
    235 20170402:
    236 	a new version of dhcpcd has been imported, which does not support
    237 	update builds from the previous version. Remove your
    238 	external/bsd/dhcpcd object dir or build once without -u.
    239 
    240 20170211:
    241 	a new terminfo database has been imported.
    242 	The structure of it has changed slightly from prior versions and
    243 	an updated tic tool is required.
    244 	If you build.sh, don't use -u
    245 
    246 20170207:
    247 	various arch dependent libc/exect.S files were removed
    248 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    249 	if it exists) or do a clean build.
    250 	(This is a bug in the make system, it should be corrected without
    251 	human intervention, but isn't.)
    252 
    253 20170104:
    254 	xinput build options have changed.
    255 	Remove the obj directory (external/mit/xorg/bin/xinput)
    256 	if you build.sh -u
    257 
    258 20170103:
    259 	a new version of flex has been imported.
    260 	Remove the file from obj (external/bsd/flex)
    261 	if you build.sh -u
    262 
    263 20161014:
    264 	a new version of OpenSSL has been imported.
    265 	Remove the files from obj (crypto/external/bsd/openssl) 
    266 	if you build.sh -u
    267 
    268 20161009:
    269 	a new version of dhcpcd has been imported with slightly changed
    270 	build infrastructure. When doing a build.sh -u this requires
    271 	pruning the external/bsd/dhcpcd objdir.
    272 
    273 20160914:
    274 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    275 	ports in using xorg-server 1.18. This requires a clean destdir
    276 	and a clean objdir.
    277 
    278 20160527:
    279 	i386 needs a full cleandir or objdir deletion because PIE has
    280 	been enabled. (see the amd64 entry two down for further info)
    281 
    282 20160418:
    283 	libedit needs manual removal of all autogenerated files since
    284 	some of them are not autogenerated anymore. Remember that there
    285 	might be two copies of libedit if your platform builds "compat".
    286 
    287 20160410:
    288 	amd64 needs full "make cleandir" or deletion of objdir now that
    289 	PIE has been enabled for amd64.  PIE, or position-independent
    290 	executables, means all code, including executables and not just
    291 	shared libraries, is position-independent and hence able to be
    292 	relocated by ASLR, address space layout randomization.
    293 
    294 	The change was made in Makefile variables for compiler and
    295 	linker flags, for which make(1) does not record dependencies,
    296 	hence it is unable to detect that all .o files need rebuilding.
    297 
    298 	Partial rebuilds with some modified source files will likely
    299 	fail when linking executables, since the linker refuses to mix
    300 	position-independent code with position-dependent code in
    301 	position-independent executables:
    302 
    303 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    304 
    305 20160401:
    306 	Ports switching to GCC 5.3 will need a full "make cleandir".
    307 	Some people have found that cleandir is not sufficient, so if
    308 	in doubt delete the entire object directory tree for gcc.
    309 
    310 20160306:
    311 	NetBSD's regexp implementation is now part of libnbcompat.
    312 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    313 	non-NetBSD hosts if linked with stale object files produced
    314 	while they included a non-NetBSD regex.h.
    315 	In any case, you should "make cleandir" at least these tools
    316 	before updating your toolchain.
    317 
    318 20160125:
    319 	Dtrace has been enabled by default on some architectures.
    320 	When doing an update build, make sure to clean the etc/mtree
    321 	object directory before starting the build - otherwise the
    322 	needed directories in destdir will not be created.
    323 	An easy way to do this is:
    324 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    325 
    326 20150818:
    327 	New acpica requires "make cleandir" in src/external/bsd/acpica
    328 	again.
    329 
    330 20150413:
    331 	New acpica requires "make cleandir" and reinstalling yacc
    332 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    333 	also "make cleandir" in /usr/src/external/bsd/acpica.
    334 
    335 20150404:
    336 	Lint changes require a full rebuild of the tool, so make
    337 	sure to build without -u option to build.sh, or manually
    338 	do a make cleandir in src/tools/lint1 and
    339 	src/usr.bin/xlint.
    340 
    341 20150310:
    342 	Improvements to openssl for arm mean that update builds of
    343 	the openssl libraries will fail. A make cleandir in
    344 	external/bsd/openssl/lib is needed
    345 
    346 20141026:
    347 	A mishap during the import of pppd may cause your corruption
    348 	in your cvs directory if you happened to do a cvs update
    349 	during a short period of time. To fix, just remove the
    350 	directory src/external/bsd/ppp/dist/pppd completely
    351 	and let cvs restore it on next update.
    352 
    353 20140721:
    354 	The src/external/mit/lua/src directory was accidentally created
    355 	and then deleted in the CVS repository.  If you get errors like
    356 
    357 	cvs [update aborted]: cannot open directory
    358 	/cvsroot/src/external/mit/lua/src: No such file or directory
    359 
    360 	then delete your local copy of that directory tree and try again.
    361 
    362 20140530:
    363 	ARM eABI switched to DWARF based exception handling. This requires
    364 	rebuilding all C++ code. It is strongly advised to do a clean build.
    365 
    366 20140131:
    367 	The new compiler_rt/libc integration moved a few things. It is strongly
    368 	advised to do a clean build. At least lib/libc, the compat version(s)
    369 	of libc, libkern, rump and the kernels need to be cleaned.
    370 
    371 20131227:
    372 	1. The new ntpd runs in a restricted mode to prevent amplification
    373 	   attacks. If you need ntpdc to work you need to explicitly enable
    374 	   mode7 in your config file. Make sure you put the necessary restrict
    375 	   statements to avoid being exposed.
    376 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    377 	   to make clean in libc
    378 
    379 20131129:
    380 	The GMP sources were updated, and builds will likely fail without
    381 	cleaning their build trees for both tools and in-tree, like below.
    382 
    383 20131128:
    384 	The MPC and MPFR sources were updated, and builds may require their
    385 	tools and in-tree directories cleaned for successful updates.
    386 
    387 20130605:
    388 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    389 	to IPSEC (and the older IPSEC version removed).
    390 
    391 20130605:
    392 	Previous freetype installations eroneously installed private
    393 	header files. If you are building against a non-empty $DESTDIR,
    394 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    395 
    396 20130531:
    397 	The xdm update may cause build failure due to xdm.man being
    398 	in the obj tree.  Make sure to ensure any like this:
    399 		nbmake: nbmake: don't know how to make xdm.man. Stop
    400 	is fixed by deleting the xdm.man in the obj tree.
    401 
    402 20130530:
    403 	Updates of many xsrc packages will leave old .pc files around.
    404 	Best to clean out the xsrc objdir entirely before rebuilds.
    405 
    406 20130301:
    407 	The removal of netiso requires manual removal of /usr/include/netiso
    408 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    409 
    410 20120726:
    411 	The update of OpenSSL requires cleaning both the OpenSSL build
    412 	directory and DESTDIR.  *Even non-update builds require cleaning
    413 	DESTDIR.* Builds done without taking these steps may fail, or in
    414 	some cases may succeed and install broken OpenSSL libraries that
    415 	cause third-party software to link incorrectly and/or crash.
    416 
    417 20120507:
    418 	The database schema for makemandb was changed.  You will
    419 	need to update the database using 'makemandb -f' or wait
    420 	for the next weekly run to fix it.
    421 
    422 20120319:
    423 	sys/conf/Makefile.kern.inc has been modified to adjust the
    424 	size of db_symtab automatically.  You need to update dbsym in
    425 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    426 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    427 	mk.conf.
    428 
    429 20120216:
    430 	Default for MKCATPAGES changed to NO.  Update builds will fail
    431 	unless DESTDIR is cleaned manually.  If you built between 20120207
    432 	and 20120216, daily and weekly could have created an unreadable
    433 	/var/db/man.db index for apropos.  Running makemandb -f or
    434 	the next run of weekly will fix it.
    435 
    436 20111227:
    437 	If you built between 20111225 and 20111227 you need to remove
    438 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    439 	bump has been reverted.
    440 
    441 20111125:
    442 	The "rnd" pseudodevice has been added to sys/conf/std, which
    443 	means it should no longer be explicitly listed in kernel
    444 	configuration files.  The line "pseudo-device rnd" should be
    445 	removed from any custom kernel config files users may have.
    446 
    447 20111119:
    448 	A problem with the datastructures used by the rndctl(8)
    449 	utility (pointers in datastructures in an array, making 32->64
    450 	bit compatibility very painful) has been fixed in a
    451 	non-backwards-compatible way.  If you replace your kernel,
    452 	replace your rndctl executable too.
    453 
    454 20111001:
    455 	the prop_*_send_syscall() functions from proplib(3) have been
    456 	changed and their new version is not backward compatible with the old
    457 	one.  So ensure that all consumers of these functions (currently:
    458 	quota2 code and its tests) are updated together with the new lib.
    459 
    460 20110817:
    461 	sparc has been changed to use GCC 4.5.3, so any objdir or
    462 	DESTDIR for them should be deleted before updating.
    463 
    464 20110806:
    465 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    466 	objdir or DESTDIR for them should be deleted before updating.
    467 
    468 20110805:
    469 	The update to GCC 4.5.3 requires a non-trivial portion of
    470 	the tree to be cleaned.  Best to delete both objdir and
    471 	DESTDIR before running this update.  So far, only the
    472 	sparc64, mips and powerpc platforms have changed.
    473 
    474 20110803:
    475 	The layout of external/public-domain/xz has changed.  To do an
    476 	update build you will have to remove the contents of the OBJDIR
    477 	for external/public-domain/xz/bin by hand as the xz entry there
    478 	is now a directory.
    479 
    480 20110410:
    481 	The configuration of src/tools/gcc has changed.  To do an
    482 	update build you have to clean both tools/binutils and
    483 	tools/gcc by hand.
    484 
    485 20110328:
    486 	Building the Xorg binary was moved into a subdirectory to fix
    487 	ordering issues with "make all".  It may be necessary to remove
    488 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    489 	if your update build fails, as the "Xorg" entry there is now a
    490 	directory.
    491 
    492 20110121:
    493 	Assembler files no longer use -traditional-cpp.  This can break
    494 	the build of individual parts of the tree.  This is handled
    495 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    496 	and re-run config(1) for any kernel configurations as needed.
    497 
    498 20101217:
    499 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    500 	by default.  It may be necessary to manually update passwd(5) and
    501 	group(5) in order to make the program work with existing setups.
    502 
    503 20101125:
    504 	The latest changes to setenv(3) dissallow setting environment
    505 	variables with names that contain '='.  Revision 1.18 of env.c
    506 	assumed that this was allowed.  Installing a new libc with an
    507 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    508 	break which affects the autoconf tests for dependency finding,
    509 	so building gcc will end up printing:
    510 	    checking dependency style of gcc... none
    511 	    configure: error: no usable dependency style found
    512 	Fix it by rebuilding and re-installing env.
    513 
    514 20101119:
    515 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    516 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    517 	have any build problems with xsrc, or problems with mismatched
    518 	versions between xorg-server and drivers.
    519 
    520 20100604:
    521 	The update of ATF to 0.9 causes old tests written in shell to fail
    522 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    523 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    524 	trees by hand.
    525 
    526 20100522:
    527 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    528 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    529 	build problems with xsrc.
    530 
    531 20100522:
    532 	private section of <ctype.h> was splitted, and now mklocale(1)
    533 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    534 
    535 20100520:
    536 	The location of the xkb compiled descriptions has changed.  Please
    537 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    538 
    539 20100222:
    540 	The shared objects file extension has been changed from .so to
    541 	.pico, in order to avoid conflicts with shared libraries names
    542 	libXX.so.  All now stale regular .so files can be removed from
    543 	your object directories.
    544 
    545 20100204:
    546 	The termcap database has been removed from the sources,
    547 	but has not been marked obsolete so it is not removed
    548 	from the system when upgrading.
    549 	As such, you will need to remove them from your object
    550 	and destination directories.
    551 
    552 20091101:
    553         After updating, it may be necessary to make the 'cleandir'
    554         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    555         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    556         src/tools/lex/ and src/usr.bin/lex/.
    557 
    558 20091001:
    559 	On amd64 you must rebuild tools (to get the new binutils)
    560 	before building a kernel, or the build fails on cpufunc.S.
    561 
    562 20091001:
    563 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    564 	symlink, failing the build.  Delete the link, and the subdir
    565 	it is in, and retry your build.
    566 
    567 20090718:
    568 	libc build changed so that strchr() provides the extra entry
    569 	point for index().  Update build of libc.a (and libc_pic.a)
    570 	may fail because the archive contains the unwanted index.o.
    571 	(Similarly for strrchr() and rindex().)
    572 
    573 20090709:
    574 	Native Xorg was upgraded again.  Builds will probably fail again
    575 	without a clean objdir, at least for src/external/mit/xorg.
    576 
    577 20090616:
    578 	Native Xorg was upgraded.  Builds will need a clean objdir for
    579 	src/external/mit/xorg.  Upgrading a system from sets will not
    580 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    581 	subdirectory has been changed into a file, and this needs to
    582 	be manually "rm -r"'ed before installing xbase.tgz.
    583 
    584 20090501:
    585 	Several new functions were added to string.h/libc, and this
    586 	can cause autoconf problems during the tool build for people
    587 	who fail to clean out their tools objects properly.  If you
    588 	note messages about stpcpy, stpncpy or strnlen accompanying a
    589 	failure during the tool build, clean out all your tools
    590 	objects and start again.
    591 
    592 20090325:
    593 	The i386 port was switched to i486 default toolchain.  This requires
    594 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    595 
    596 20090126:
    597 	The __posix_fadvise50 system call changed assembly stub type.  You
    598 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    599 	to avoid using the old assembly stub.
    600 
    601 20090202:
    602 	pkg_install now depends on the pkgdb cache for automatic conflict
    603 	detection.  It is recommented to rebuild the cache with
    604 	``pkg_admin rebuild''.
    605 
    606 20090110:
    607 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    608 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    609 	   This is needed even in the MODULAR kernel because there is
    610 	   conditionally compiled code in rtsock.c.
    611 	2. make sure build.sh completes and the binaries in a chroot work
    612 	   before installing.
    613 	3. If you don't use build.sh and you build directly to root, and
    614 	   your build breaks in the middle, don't despair.  Make sure headers
    615 	   are installed properly, and start building libraries first libc
    616 	   and libutil, install them and then continue building all the
    617 	   libraries in src/lib and src/gnu/lib and install them.  Once
    618 	   the new libraries are installed, you can restart the build.
    619 	4. If you compile packages and you notice link time warnings,
    620 	   rebuild the required packages to update their shared libraries.
    621 	   Any package you rebuild will require rebuilding all the packages
    622 	   that depend on it.
    623 	5. Next time you run pwd_mkdb with the new binary, the file
    624 	   will be upgraded and it will not be backwards compatible.
    625 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    626 	   lastlogx(5)) have been versioned, and there is a heuristic
    627 	   for utmp.  You are better off removing the old files after
    628 	   upgrading.  The automated clearing of /var/run during
    629 	   boot, and the automated rotating of files in /var/log by
    630 	   newsyslog(8), may mean that you do not have to remove the
    631 	   files manually.
    632 	7. The optional accounting file (/var/account/acct, see
    633 	   accton(8)) has not been versioned, and will need to be
    634 	   removed.  The automatic rotation of the accounting file by
    635 	   /etc/daily limits the bad consequences of failure to remove
    636 	   the file.
    637 	8. Application software that writes time_t to binary files on
    638 	   disk will break or need attention.  Most notably: if you are
    639 	   using PostgreSQL < 8.4, you need to dump your databases,
    640 	   rebuild PostgreSQL with the new time_t, then restore.
    641 
    642 20081219:
    643 	config(1) has been updated, and one of the files it creates -
    644 	swapnetbsd.o - has changed format.  You need to rebuild config
    645 	(done automatically by build.sh) and then you need to rerun
    646 	config on all kernel configuration files before rebuilding those
    647 	kernels.
    648 
    649 20081205:
    650 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    651 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    652 	set and will appear as extra files for MKX11=no update builds.
    653 
    654 20081122:
    655 	On i386, various kernel options(4) in GENERIC including
    656 	file systems have been disabled and moved into kernel modules.
    657 	Before trying a new GENERIC kernel, you have to prepare the
    658 	following files as well as a new GENERIC kernel:
    659 
    660 	- build and install kernel modules from src/sys/modules
    661 
    662 	- install the latest bootloader, which will load a module
    663 	  for the file system from which the kernel is loaded automatically
    664 
    665 	If you have to load your kernel from a file system which is not of
    666 	the same type as the root file system, you have to load the necessary
    667 	file system module manually on the boot prompt or in the boot.cfg file.
    668 
    669 20080827:
    670 	If you built and installed a libc from sources between
    671 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    672 	which results in false errors reported by lint(1).
    673 	Since this breaks the libc build itself, manual help is
    674 	needed -- lint must be disabled temporarily, e.g.:
    675 	  $ (cd lib/libc && make MKLINT=no dependall install)
    676 
    677 20080813:
    678 	MKDEBUG build was broken because the .depend files did not know
    679 	about .go files.  You need to remove all .depend files and rebuild.
    680 
    681 20080802:
    682 	A regression in binary compatibility for pthread_mutex_t has
    683 	been fixed.  Unfortunately, the price is breaking compatibility
    684 	for -current.
    685 
    686 	Threaded programs (using libpthread) and C++ programs (using
    687 	libstdc++) compiled after 20070907 and before 20080802 need to
    688 	be recompiled.
    689 
    690 	One way to find affected pkgsrc packages:
    691 
    692 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    693 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    694 
    695 20080731:
    696 	WAPBL (metadata journaling support) has been added, but at this
    697 	time isn't backwards compatible with pre-WAPBL aware kernels
    698 	and userland (fsck_ffs in particular).  Please make sure you
    699 	don't use a journaled filesystem with an older kernel/userland,
    700 	especially an uncleanly mounted journaled filesystem.  WAPBL
    701 	also requires the super block to be in the UFS2 format.  You
    702 	can use fsck_ffs -c 4 to update the superblock format.
    703 
    704 20080721:
    705 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    706 	isn't defined.
    707 
    708 20080531:
    709 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    710 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    711 	utility needs to be rebuilt and reinstalled as older binaries
    712 	won't work correctly.  The following sequence of commands:
    713 
    714 	  $ (cd sys/sys/ && nbmake-$arch includes)
    715 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    716 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    717 
    718 	leaves new drvctl utility in sbin/drvctl build directory.
    719 
    720 20080503:
    721 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    722 
    723 20080521:
    724 	For a while, unprivileged UPDATE builds would fail to
    725 	succeed at the checkflist stage, complaining that
    726 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    727 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    728 	If you already hit this problem, update the .mk file,
    729 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    730 
    731 20080303:
    732 	Linker warnings are now fatal if $WARNS>0.
    733 
    734 20080126:
    735 	The posix_fadvise system call has been changed from an assembly
    736 	stub, to a c file that calls an assembly stub.  You need to
    737 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    738 	avoid using the old assembly stub.
    739 
    740 20071209:
    741 	The acpiec(4) driver has been split into two attachments.  If you
    742 	get ACPI errors before the attachment, please update your kernel
    743 	configuration file appropriately or see GENERIC for more details.
    744 
    745 20071115:
    746 	The it(4) driver has been renamed to itesio(4) and the old port
    747 	argument specified in the kernel configuration file is not valid
    748 	anymore.  The itesio(4) driver now uses the Super I/O address port
    749 	rather than the EC address port.  Please update your kernel
    750 	configuration file appropriately or see GENERIC for more details.
    751 
    752 20071028:
    753 	The pccons(4) driver has been removed from the NetBSD/shark port.
    754 	You need to update any custom kernel configuration file you have
    755 	to remove any references to pccons (which includes removing the
    756 	now useless XSERVER option) and replace them with the correct
    757 	entries for the wscons driver.  See the GENERIC configuration file
    758 	for more details.
    759 
    760 20070913:
    761 	A latent bug in dhclient/dhcpd that caused it to be unable to
    762 	enumerate interfaces was fixed.  The bug began to cause
    763 	problems after 20070911 when the kernel's SIOCGIFCONF
    764 	implementation was repaired.  From 20070529 to 20070911 racoon
    765 	could not enumerate interfaces.  (These are noted because
    766 	normal kernel/userspace version matching hygiene is not
    767 	sufficient to avoid this problem.)  Ensure that both kernel
    768 	and userland are from after 20070913.
    769 
    770 20070703:
    771 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    772 	calls the target-specific strip program, and the logic to pass
    773 	down STRIP from make has been removed.  This requires a
    774 	re-installation of tools.
    775 
    776 20070422:
    777 	The way OS emulations lookup filenames inside the emulation root
    778 	has been changed.  Rather than modify the pathname (and copy back
    779 	to userspace) namei() and lookup() directly check the emulation
    780 	root.  One side effect is that absolute symlinks inside the emulated
    781 	root file system will be relative to that file system - unless they
    782 	start /../ this is useful when the emulated root is a real install
    783 	that has such links.
    784 	This might affect symlinks that have been added to reference outside
    785 	the emulated root.
    786 
    787 20070412:
    788 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    789 	instead.  See the GENERIC32_IP3x kernel configuration for an
    790 	example.
    791 
    792 20070319:
    793         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    794         on many platforms due to incorrect flags settings.  If you
    795         updated and built after about 20070315, do "nbmake-$arch
    796 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    797 	rebuild of object files that might have been built
    798 	incorrectly, and ensure that you have at least
    799 	src/lib/libc/Makefile 1.130.
    800 
    801 20070210:
    802         src/sys/sys/{sa.h,savar.h} were removed.
    803           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    804               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    805         will allow dependencies on those files to get get rebuilt
    806 
    807 20070209:
    808         The threading model was changed when the newlock2 branch
    809         was merged to NetBSD-current.  If you boot with a new
    810         kernel (version 4.99.10), then you also need a new pthread
    811         library (/usr/lib/libpthread.so.0.7).  If you boot with
    812         an old kernel, then you need the old pthread library
    813         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    814         the pthread library in sync, old threaded applications should
    815         continue to work with an old or new kernel.  Note that named(8)
    816 	is the only threaded application in the base system.
    817 
    818 20061214:
    819 	Following the move of string_to_flags() and flags_to_string()
    820 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    821 	will need to do a "make cleandir" in
    822 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    823 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    824 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    825 		as the installation images in distrib/
    826 	in order to excise stale references to the old stat_flags.h header
    827 	file in the ls sources -- stat_flags.h has been removed.
    828 
    829 20061108:
    830 	The configure script used in the src/tools/gcc compiler has been
    831 	changed to indicate that our libc has ssp support built-in and
    832 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    833 	make clean in src/tools/gcc first to rebuild the compiler.
    834 
    835 20061009:
    836 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    837 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    838 
    839 20060814:
    840 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    841 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    842 	kernel configuration for an example.  X servers from the last
    843 	few years should cope.
    844 
    845 20060703:
    846 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    847 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    848 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    849 
    850 20060627:
    851 	socket(2) has changed, and its system call has been versioned.
    852 	For userlands with the old version of socket(2), make sure that
    853 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    854 	errors will result.
    855 
    856 Hints for a more successful build:
    857 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    858     Use build.sh, but do not use its "expert mode":
    859 	This will automatically build the tools in the
    860 	   correct order, and it will keep the tools and the
    861 	   new build products from interfering with the running
    862 	   system.  This will allow you to ignore most of the
    863 	   other advice in this file.
    864     Build a new kernel first:
    865 	This makes sure that any new system calls or features
    866 	   expected by the new userland will be present.  This
    867 	   helps to avoid critical errors when upgrading.
    868     Use object directories:
    869 	This helps to keep stale object
    870 	   files from polluting the build if a Makefile "forgets"
    871 	   about one.  It also makes it easier to clean up after
    872 	   a build.  It's also necessary if you want to use the
    873 	   same source tree for multiple machines.
    874 	   To use object directories with build.sh:
    875 	    a) invoke build.sh with the "-M" or "-O" options.
    876 	   To use object directories without using build.sh:
    877 	    a) cd /usr/src ; make cleandir
    878 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    879 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    880 	    d) cd /usr/src ; make build
    881 	   Note that running "make obj" in a directory will create
    882 	   in obj.$MACHINE directory.
    883     Build to a DESTDIR:
    884 	This helps to keep old installed files (especially libraries)
    885 	   from interfering with the new build.
    886 	   To build to a DESTDIR with build.sh, use the "-D" option.
    887 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    888 	   environment variable before running make build.  It should be
    889 	   set to the pathname of an initially empty directory.
    890 	   Problems: if you do not use build.sh, you might need to
    891 		update critical utilities without using DESTDIR since
    892 		nothing is executed from what is installed in DESTDIR.
    893 		(See critical utils, below.)
    894     Build often:
    895 	This keeps critical utilities current enough to not choke
    896 	on any other part of the source tree that depends on up to
    897 	date functionality.  If you use build.sh, you should not have
    898 	this problem.
    899 
    900 What to do if things don't work:
    901 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    902 When things don't work there are usually a few things that commonly
    903 should be done.
    904     1)	make includes
    905 	This should be done automatically by make build.
    906     2)  cd share/mk && make install
    907 	Again, automatically done by make build.
    908 
    909 Failsafe rebuild of a small part of the tree:
    910 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    911 To make sure you rebuild something correctly you want to do
    912 something like the following:
    913     1)  Make sure the includes and .mk files are up to date.
    914     2)  Make sure any program used to build the particular
    915 	utility is up to date.  (yacc, lex, etc...)
    916     3)  cd ...path/to/util...
    917 	make cleandir
    918 	rm ...all obj directories...
    919 	make cleandir			# yes, again
    920 	make obj
    921 	make depend && make
    922 
    923 Failsafe rebuild of the entire tree:
    924 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    925 If you really want to make sure the source tree is clean and
    926 ready for a build try the following.  Note that sourcing /etc/mk.conf
    927 (a make(1) Makefile) in this manner is not right, and will not work
    928 for anyone who uses any make(1) features in /etc/mk.conf.
    929 
    930 ---cut here---
    931 #!/bin/sh
    932 . /etc/mk.conf
    933 
    934 if [ -z $NETBSDSRCDIR ] ; then
    935     NETBSDSRCDIR=/usr/src
    936 fi
    937 if [ \! -d $NETBSDSRCDIR ] ; then
    938     echo Unable to find sources
    939     exit 1
    940 fi
    941 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    942 
    943 if [ -z $BSDOBJDIR ] ; then
    944     BSDOBJDIR=/usr/obj
    945 fi
    946 if [ -d $BSDOBJDIR ] ; then
    947     rm -rf $BSDOBJDIR
    948 fi
    949 
    950 cd $NETBSDSRCDIR && make cleandir
    951 
    952 ---cut here---
    953 
    954 Critical utilities:
    955 ^^^^^^^^^^^^^^^^^^^
    956 	usr.bin/compile_et
    957 	usr.bin/make
    958 	usr.bin/yacc
    959 	usr.bin/lex
    960 	usr.bin/xlint
    961 	usr.bin/config
    962 
    963 Other problems and possible solutions:
    964 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    965 Symptom:Complaints involving a Makefile.
    966 Fix:	Rebuild usr.bin/make:
    967 	cd usr.bin/make && make && make install
    968 	Or, a failsafe method if that doesn't work:
    969 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    970 
    971 Fix:	Make sure .mk files are up to date.
    972 	cd share/mk && make install
    973 
    974 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    975 Fix:	Rebuild usr.bin/config
    976 
    977 Symptom:
    978 Fix:	Rebuild usr.bin/yacc
    979 
    980 Symptom:
    981 Fix:	Rebuild usr.bin/lex
    982 
    983 Symptom:
    984 Fix:	rm /usr/lib/libbfd.a
    985 
    986 Symptom:Obsolete intermediate files are used during compilation
    987 Fix:	Try the following sequence of commands in the directory in question.
    988 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    989 	(If you built the tree without "make obj" in the past, obsolete files
    990 	may remain.  The command tries to clean everything up)
    991 
    992 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
    993 	pointer type
    994 Fix:	Rebuild and install usr.bin/menuc
    995 
    996 Symptom:mklocale not found during build in share/locale/ctype
    997 Fix:	Build and install usr.bin/mklocale
    998 
    999 Symptom:undefined reference to `__assert13' or `__unsetenv13'
   1000 Fix:    Rebuild and install lib/libc
   1001 
   1002 Symptom:usr.bin/config fails to build.
   1003 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
   1004 
   1005 Symptom:undefined reference to `getprogname' or `setprogname'
   1006 Fix:    Rebuild and install lib/libc
   1007 
   1008 Symptom:lint does not understand the '-X' option
   1009 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
   1010 
   1011 Symptom:Update build fails in src/tools/gcc complaining that a variable
   1012 	(e.g. CPPFLAGS) has changed since the previous run.
   1013 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
   1014 
   1015 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
   1016 	No such file or directory.
   1017 Cause:	If a directory is created by mistake, then it is sometimes
   1018 	deleted from the CVS repository using administrative commands
   1019 	that bypass the normal cvs access controls.  If your cvs working tree
   1020 	contains references to a directory that has been deleted on the
   1021 	server in this way, then "cvs update" reports this error.
   1022 Fix:	Recursively delete the affected directory from your working tree
   1023 	and try the update again.
   1024