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UPDATING revision 1.320
      1 $NetBSD: UPDATING,v 1.320 2021/08/21 09:59:45 andvar 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 20210711:
     23 	Updated GMP sources may require cleaning in tools/gmp and/or in
     24 	external/lgpl3/gmp/lib, particularly if GCC itself does not build.
     25 
     26 20210417:
     27 	GCC 10 was enabled for several platforms.  If builds fail in either
     28 	tools/gcc or external/gpl/gcc, first try cleaning those objects and
     29 	removing the $DESTDIR/usr/include/g++ subdirectory.
     30 
     31 20201230:
     32 	lint1/ops.c is no longer autogenerated.  If this makes the build
     33 	fail, clean $OBJDIR/tools/*lint* and $OBJDIR/usr.bin/*xlint*.
     34 
     35 20201016:
     36 	MIPS kernel modules have been disabled until they work.  This will
     37 	turn up in extra files in the DESTDIR, which should be cleaned.
     38 
     39 20200925:
     40 	GNU MPC and MPFR have been updated.  At least MPFR needs cleaning
     41 	in both the tools and external dirs.
     42 
     43 20200912:
     44 	GCC 9 has arrived for Arm and x86 platforms, and will be coming
     45 	for several more, as will binutils 2.34.  Clean as required.
     46 
     47 20200907:
     48 	GCC 9 is coming, and binutils has been updated for MIPS.  This
     49 	probably requires cleaning the tools/binutils.
     50 
     51 20200811:
     52 	GCC updates may require cleaning the objdir.  This may occur
     53 	due to GCC 7.5 update, GCC 8.4 move to gcc.old, or the upcoming
     54 	GCC 9 upgrade.
     55 
     56 20200614:
     57 	blacklist* has been renamed to blocklist*. postinstall(8)
     58 	should handle the migration
     59 
     60 20200601:
     61 	Due to a mistake in LIBISPRIVATE handling, .so libraries were
     62 	created in the build directories and need cleaning.
     63 
     64 20200311:
     65 	GCC 8 ports will need cleaning in src/tools/gcc and
     66 	src/external/gpl3/gcc due to GCC 8.4 update.
     67 
     68 20191118:
     69 	More architectures were switched to gcc8:
     70 	    i386, ia64 powerpc64, sparc, sparc64, arm
     71 	The same comments as in 20191022 apply.
     72 
     73 20191112:
     74 	The LLVM update requires a clean rebuild for all architectures using
     75 	LLVM during the tools build phase (i386, amd64, aarch64).
     76 
     77 20191022:
     78 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
     79 	In-place ("expert mode", build.sh -E) builds are not supported
     80 	when going from a GCC 7 userland to GCC 8. Do a regular
     81 	build to a different DESTDIR (or preferably: build.sh -U) at least
     82 	once and install sets, or download comp.{tar.xz,tgz} from the
     83 	daily builds and install that before doing the next in-place build.
     84 
     85 20191001:
     86 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
     87 	old builds with GCC 7 output now uses GCC 8.  Clean this
     88 	directory, and also clean src/external/gpl3/gcc.
     89 
     90 20190903:
     91 	Files with names that coincide with existing files' names on
     92 	case-insensitive file systems were inadvertently committed, for
     93 	radeon GPU firmware.  We cannot mark these as obsolete for
     94 	postinstall to fix, so if you updated src since 2019-08-26, and
     95 	ran build.sh distribution or ran build.sh release, you must
     96 	manually delete the following files in your DESTDIR (which is
     97 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
     98 	them:
     99 
    100 		/libdata/firmware/radeon/bonaire_ce.bin
    101 		/libdata/firmware/radeon/bonaire_mc.bin
    102 		/libdata/firmware/radeon/bonaire_me.bin
    103 		/libdata/firmware/radeon/bonaire_mec.bin
    104 		/libdata/firmware/radeon/bonaire_pfp.bin
    105 		/libdata/firmware/radeon/bonaire_rlc.bin
    106 		/libdata/firmware/radeon/bonaire_sdma.bin
    107 		/libdata/firmware/radeon/bonaire_smc.bin
    108 		/libdata/firmware/radeon/bonaire_uvd.bin
    109 		/libdata/firmware/radeon/hainan_ce.bin
    110 		/libdata/firmware/radeon/hainan_mc.bin
    111 		/libdata/firmware/radeon/hainan_me.bin
    112 		/libdata/firmware/radeon/hainan_pfp.bin
    113 		/libdata/firmware/radeon/hainan_rlc.bin
    114 		/libdata/firmware/radeon/hainan_smc.bin
    115 		/libdata/firmware/radeon/hawaii_ce.bin
    116 		/libdata/firmware/radeon/hawaii_mc.bin
    117 		/libdata/firmware/radeon/hawaii_me.bin
    118 		/libdata/firmware/radeon/hawaii_mec.bin
    119 		/libdata/firmware/radeon/hawaii_pfp.bin
    120 		/libdata/firmware/radeon/hawaii_rlc.bin
    121 		/libdata/firmware/radeon/hawaii_sdma.bin
    122 		/libdata/firmware/radeon/hawaii_smc.bin
    123 		/libdata/firmware/radeon/kabini_ce.bin
    124 		/libdata/firmware/radeon/kabini_me.bin
    125 		/libdata/firmware/radeon/kabini_mec.bin
    126 		/libdata/firmware/radeon/kabini_pfp.bin
    127 		/libdata/firmware/radeon/kabini_rlc.bin
    128 		/libdata/firmware/radeon/kabini_sdma.bin
    129 		/libdata/firmware/radeon/kaveri_ce.bin
    130 		/libdata/firmware/radeon/kaveri_me.bin
    131 		/libdata/firmware/radeon/kaveri_mec.bin
    132 		/libdata/firmware/radeon/kaveri_mec2.bin
    133 		/libdata/firmware/radeon/kaveri_pfp.bin
    134 		/libdata/firmware/radeon/kaveri_rlc.bin
    135 		/libdata/firmware/radeon/kaveri_sdma.bin
    136 		/libdata/firmware/radeon/mullins_ce.bin
    137 		/libdata/firmware/radeon/mullins_me.bin
    138 		/libdata/firmware/radeon/mullins_mec.bin
    139 		/libdata/firmware/radeon/mullins_pfp.bin
    140 		/libdata/firmware/radeon/mullins_rlc.bin
    141 		/libdata/firmware/radeon/mullins_sdma.bin
    142 		/libdata/firmware/radeon/oland_ce.bin
    143 		/libdata/firmware/radeon/oland_mc.bin
    144 		/libdata/firmware/radeon/oland_me.bin
    145 		/libdata/firmware/radeon/oland_pfp.bin
    146 		/libdata/firmware/radeon/oland_rlc.bin
    147 		/libdata/firmware/radeon/oland_smc.bin
    148 		/libdata/firmware/radeon/pitcairn_ce.bin
    149 		/libdata/firmware/radeon/pitcairn_mc.bin
    150 		/libdata/firmware/radeon/pitcairn_me.bin
    151 		/libdata/firmware/radeon/pitcairn_pfp.bin
    152 		/libdata/firmware/radeon/pitcairn_rlc.bin
    153 		/libdata/firmware/radeon/pitcairn_smc.bin
    154 		/libdata/firmware/radeon/tahiti_ce.bin
    155 		/libdata/firmware/radeon/tahiti_mc.bin
    156 		/libdata/firmware/radeon/tahiti_me.bin
    157 		/libdata/firmware/radeon/tahiti_pfp.bin
    158 		/libdata/firmware/radeon/tahiti_rlc.bin
    159 		/libdata/firmware/radeon/tahiti_smc.bin
    160 		/libdata/firmware/radeon/verde_ce.bin
    161 		/libdata/firmware/radeon/verde_mc.bin
    162 		/libdata/firmware/radeon/verde_me.bin
    163 		/libdata/firmware/radeon/verde_pfp.bin
    164 		/libdata/firmware/radeon/verde_rlc.bin
    165 		/libdata/firmware/radeon/verde_smc.bin
    166 
    167 	We will re-import these radeon firmware images another way
    168 	later.
    169 
    170 20190727:
    171 	The uefi bootloader has gained tftp support and needs a clean
    172 	build. If you do update builds, manually clean its object
    173 	directory by something like:
    174 	cd sys/arch/i386/stand/efiboot && make clean
    175 
    176 20190723:
    177 	The jemalloc allocator in libc is now build without extended
    178 	debugging (for performance reasons). In update builds make sure
    179 	to rebuild it completly, by removing all affected object files,
    180 	including compat builds, something like:
    181 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    182 
    183 20190207:
    184 	GCC 7 switched for many ports.  Update builds are likely to fail.
    185 
    186 20180924:
    187 	A newer OpenSSL version has been imported. If you are doing
    188 	update builds, make sure to remove all old obj dirs, like:
    189 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    190 
    191 20180717:
    192 	On aarch64 int64_t and related types have changed from long long
    193 	to long. This requires recompiling all C++ binaries.
    194 
    195 20180713:
    196 	On amd64 and i386 static binaries are now build position
    197 	independend. This requires recompilation of all object
    198 	files used to create the crunched /rescue binary.
    199 	Clean the rescue directory in your obj directory before
    200 	doing an update build, otherwise linking will fail.
    201 
    202 20180414:
    203 	Existing binutils was migrated to binutils.old.  Manual
    204 	removal of tools/binutils objects directory may be required
    205 	to fix tools build failure.
    206 
    207 20180311:
    208 	bdftopcf was updated and may need cleaning in the
    209 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    210 	link errors.
    211 
    212 20180212:
    213 	between OpenSSL and GCC updates, many things may fail to build.
    214 	any failure that looks like GCC or openssl is best handled by
    215 	a clean destdir and objdir.  Full cleandir and destdir deletion
    216 	is recommended if build failures occur.
    217 
    218 20171225:
    219 	removal of the vadvise syscall requires manual removal of all
    220 	associated files from the libc build object directory (including
    221 	the .depend files) - a command like:
    222 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    223 	For architectures that support multiple "compat" binary targets,
    224 	you'll need to cleanup both the regular libc directory and the
    225 	compat ones (the above command will do that).
    226 
    227 20171010:
    228 	a change to the build structure of external/bsd/acpica/bin/iasl
    229 	means that its objdir (or *.d and .depend at least) might need
    230 	to be manually removed - or a build done once without -u.
    231 
    232 20170822:
    233 	a new version of GMP has been imported and probably
    234 	will break parts of builds related to themselves or GCC, both
    235 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    236 	and MPC objdirs or build once without -u.
    237 
    238 20170816:
    239 	a new version of MPFR and MPC have been imported and probably
    240 	will break parts of builds related to themselves or GCC, both
    241 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    242 	and MPC objdirs or build once without -u.
    243 
    244 20170402:
    245 	a new version of dhcpcd has been imported, which does not support
    246 	update builds from the previous version. Remove your
    247 	external/bsd/dhcpcd object dir or build once without -u.
    248 
    249 20170211:
    250 	a new terminfo database has been imported.
    251 	The structure of it has changed slightly from prior versions and
    252 	an updated tic tool is required.
    253 	If you build.sh, don't use -u
    254 
    255 20170207:
    256 	various arch dependent libc/exect.S files were removed
    257 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    258 	if it exists) or do a clean build.
    259 	(This is a bug in the make system, it should be corrected without
    260 	human intervention, but isn't.)
    261 
    262 20170104:
    263 	xinput build options have changed.
    264 	Remove the obj directory (external/mit/xorg/bin/xinput)
    265 	if you build.sh -u
    266 
    267 20170103:
    268 	a new version of flex has been imported.
    269 	Remove the file from obj (external/bsd/flex)
    270 	if you build.sh -u
    271 
    272 20161014:
    273 	a new version of OpenSSL has been imported.
    274 	Remove the files from obj (crypto/external/bsd/openssl) 
    275 	if you build.sh -u
    276 
    277 20161009:
    278 	a new version of dhcpcd has been imported with slightly changed
    279 	build infrastructure. When doing a build.sh -u this requires
    280 	pruning the external/bsd/dhcpcd objdir.
    281 
    282 20160914:
    283 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    284 	ports in using xorg-server 1.18. This requires a clean destdir
    285 	and a clean objdir.
    286 
    287 20160527:
    288 	i386 needs a full cleandir or objdir deletion because PIE has
    289 	been enabled. (see the amd64 entry two down for further info)
    290 
    291 20160418:
    292 	libedit needs manual removal of all autogenerated files since
    293 	some of them are not autogenerated anymore. Remember that there
    294 	might be two copies of libedit if your platform builds "compat".
    295 
    296 20160410:
    297 	amd64 needs full "make cleandir" or deletion of objdir now that
    298 	PIE has been enabled for amd64.  PIE, or position-independent
    299 	executables, means all code, including executables and not just
    300 	shared libraries, is position-independent and hence able to be
    301 	relocated by ASLR, address space layout randomization.
    302 
    303 	The change was made in Makefile variables for compiler and
    304 	linker flags, for which make(1) does not record dependencies,
    305 	hence it is unable to detect that all .o files need rebuilding.
    306 
    307 	Partial rebuilds with some modified source files will likely
    308 	fail when linking executables, since the linker refuses to mix
    309 	position-independent code with position-dependent code in
    310 	position-independent executables:
    311 
    312 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    313 
    314 20160401:
    315 	Ports switching to GCC 5.3 will need a full "make cleandir".
    316 	Some people have found that cleandir is not sufficient, so if
    317 	in doubt delete the entire object directory tree for gcc.
    318 
    319 20160306:
    320 	NetBSD's regexp implementation is now part of libnbcompat.
    321 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    322 	non-NetBSD hosts if linked with stale object files produced
    323 	while they included a non-NetBSD regex.h.
    324 	In any case, you should "make cleandir" at least these tools
    325 	before updating your toolchain.
    326 
    327 20160125:
    328 	Dtrace has been enabled by default on some architectures.
    329 	When doing an update build, make sure to clean the etc/mtree
    330 	object directory before starting the build - otherwise the
    331 	needed directories in destdir will not be created.
    332 	An easy way to do this is:
    333 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    334 
    335 20150818:
    336 	New acpica requires "make cleandir" in src/external/bsd/acpica
    337 	again.
    338 
    339 20150413:
    340 	New acpica requires "make cleandir" and reinstalling yacc
    341 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    342 	also "make cleandir" in /usr/src/external/bsd/acpica.
    343 
    344 20150404:
    345 	Lint changes require a full rebuild of the tool, so make
    346 	sure to build without -u option to build.sh, or manually
    347 	do a make cleandir in src/tools/lint1 and
    348 	src/usr.bin/xlint.
    349 
    350 20150310:
    351 	Improvements to openssl for arm mean that update builds of
    352 	the openssl libraries will fail. A make cleandir in
    353 	external/bsd/openssl/lib is needed
    354 
    355 20141026:
    356 	A mishap during the import of pppd may cause your corruption
    357 	in your cvs directory if you happened to do a cvs update
    358 	during a short period of time. To fix, just remove the
    359 	directory src/external/bsd/ppp/dist/pppd completely
    360 	and let cvs restore it on next update.
    361 
    362 20140721:
    363 	The src/external/mit/lua/src directory was accidentally created
    364 	and then deleted in the CVS repository.  If you get errors like
    365 
    366 	cvs [update aborted]: cannot open directory
    367 	/cvsroot/src/external/mit/lua/src: No such file or directory
    368 
    369 	then delete your local copy of that directory tree and try again.
    370 
    371 20140530:
    372 	ARM eABI switched to DWARF based exception handling. This requires
    373 	rebuilding all C++ code. It is strongly advised to do a clean build.
    374 
    375 20140131:
    376 	The new compiler_rt/libc integration moved a few things. It is strongly
    377 	advised to do a clean build. At least lib/libc, the compat version(s)
    378 	of libc, libkern, rump and the kernels need to be cleaned.
    379 
    380 20131227:
    381 	1. The new ntpd runs in a restricted mode to prevent amplification
    382 	   attacks. If you need ntpdc to work you need to explicitly enable
    383 	   mode7 in your config file. Make sure you put the necessary restrict
    384 	   statements to avoid being exposed.
    385 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    386 	   to make clean in libc
    387 
    388 20131129:
    389 	The GMP sources were updated, and builds will likely fail without
    390 	cleaning their build trees for both tools and in-tree, like below.
    391 
    392 20131128:
    393 	The MPC and MPFR sources were updated, and builds may require their
    394 	tools and in-tree directories cleaned for successful updates.
    395 
    396 20130605:
    397 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    398 	to IPSEC (and the older IPSEC version removed).
    399 
    400 20130605:
    401 	Previous freetype installations erroneously installed private
    402 	header files. If you are building against a non-empty $DESTDIR,
    403 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    404 
    405 20130531:
    406 	The xdm update may cause build failure due to xdm.man being
    407 	in the obj tree.  Make sure to ensure any like this:
    408 		nbmake: nbmake: don't know how to make xdm.man. Stop
    409 	is fixed by deleting the xdm.man in the obj tree.
    410 
    411 20130530:
    412 	Updates of many xsrc packages will leave old .pc files around.
    413 	Best to clean out the xsrc objdir entirely before rebuilds.
    414 
    415 20130301:
    416 	The removal of netiso requires manual removal of /usr/include/netiso
    417 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    418 
    419 20120726:
    420 	The update of OpenSSL requires cleaning both the OpenSSL build
    421 	directory and DESTDIR.  *Even non-update builds require cleaning
    422 	DESTDIR.* Builds done without taking these steps may fail, or in
    423 	some cases may succeed and install broken OpenSSL libraries that
    424 	cause third-party software to link incorrectly and/or crash.
    425 
    426 20120507:
    427 	The database schema for makemandb was changed.  You will
    428 	need to update the database using 'makemandb -f' or wait
    429 	for the next weekly run to fix it.
    430 
    431 20120319:
    432 	sys/conf/Makefile.kern.inc has been modified to adjust the
    433 	size of db_symtab automatically.  You need to update dbsym in
    434 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    435 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    436 	mk.conf.
    437 
    438 20120216:
    439 	Default for MKCATPAGES changed to NO.  Update builds will fail
    440 	unless DESTDIR is cleaned manually.  If you built between 20120207
    441 	and 20120216, daily and weekly could have created an unreadable
    442 	/var/db/man.db index for apropos.  Running makemandb -f or
    443 	the next run of weekly will fix it.
    444 
    445 20111227:
    446 	If you built between 20111225 and 20111227 you need to remove
    447 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    448 	bump has been reverted.
    449 
    450 20111125:
    451 	The "rnd" pseudodevice has been added to sys/conf/std, which
    452 	means it should no longer be explicitly listed in kernel
    453 	configuration files.  The line "pseudo-device rnd" should be
    454 	removed from any custom kernel config files users may have.
    455 
    456 20111119:
    457 	A problem with the datastructures used by the rndctl(8)
    458 	utility (pointers in datastructures in an array, making 32->64
    459 	bit compatibility very painful) has been fixed in a
    460 	non-backwards-compatible way.  If you replace your kernel,
    461 	replace your rndctl executable too.
    462 
    463 20111001:
    464 	the prop_*_send_syscall() functions from proplib(3) have been
    465 	changed and their new version is not backward compatible with the old
    466 	one.  So ensure that all consumers of these functions (currently:
    467 	quota2 code and its tests) are updated together with the new lib.
    468 
    469 20110817:
    470 	sparc has been changed to use GCC 4.5.3, so any objdir or
    471 	DESTDIR for them should be deleted before updating.
    472 
    473 20110806:
    474 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    475 	objdir or DESTDIR for them should be deleted before updating.
    476 
    477 20110805:
    478 	The update to GCC 4.5.3 requires a non-trivial portion of
    479 	the tree to be cleaned.  Best to delete both objdir and
    480 	DESTDIR before running this update.  So far, only the
    481 	sparc64, mips and powerpc platforms have changed.
    482 
    483 20110803:
    484 	The layout of external/public-domain/xz has changed.  To do an
    485 	update build you will have to remove the contents of the OBJDIR
    486 	for external/public-domain/xz/bin by hand as the xz entry there
    487 	is now a directory.
    488 
    489 20110410:
    490 	The configuration of src/tools/gcc has changed.  To do an
    491 	update build you have to clean both tools/binutils and
    492 	tools/gcc by hand.
    493 
    494 20110328:
    495 	Building the Xorg binary was moved into a subdirectory to fix
    496 	ordering issues with "make all".  It may be necessary to remove
    497 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    498 	if your update build fails, as the "Xorg" entry there is now a
    499 	directory.
    500 
    501 20110121:
    502 	Assembler files no longer use -traditional-cpp.  This can break
    503 	the build of individual parts of the tree.  This is handled
    504 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    505 	and re-run config(1) for any kernel configurations as needed.
    506 
    507 20101217:
    508 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    509 	by default.  It may be necessary to manually update passwd(5) and
    510 	group(5) in order to make the program work with existing setups.
    511 
    512 20101125:
    513 	The latest changes to setenv(3) dissallow setting environment
    514 	variables with names that contain '='.  Revision 1.18 of env.c
    515 	assumed that this was allowed.  Installing a new libc with an
    516 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    517 	break which affects the autoconf tests for dependency finding,
    518 	so building gcc will end up printing:
    519 	    checking dependency style of gcc... none
    520 	    configure: error: no usable dependency style found
    521 	Fix it by rebuilding and re-installing env.
    522 
    523 20101119:
    524 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    525 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    526 	have any build problems with xsrc, or problems with mismatched
    527 	versions between xorg-server and drivers.
    528 
    529 20100604:
    530 	The update of ATF to 0.9 causes old tests written in shell to fail
    531 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    532 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    533 	trees by hand.
    534 
    535 20100522:
    536 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    537 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    538 	build problems with xsrc.
    539 
    540 20100522:
    541 	private section of <ctype.h> was split, and now mklocale(1)
    542 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    543 
    544 20100520:
    545 	The location of the xkb compiled descriptions has changed.  Please
    546 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    547 
    548 20100222:
    549 	The shared objects file extension has been changed from .so to
    550 	.pico, in order to avoid conflicts with shared libraries names
    551 	libXX.so.  All now stale regular .so files can be removed from
    552 	your object directories.
    553 
    554 20100204:
    555 	The termcap database has been removed from the sources,
    556 	but has not been marked obsolete so it is not removed
    557 	from the system when upgrading.
    558 	As such, you will need to remove them from your object
    559 	and destination directories.
    560 
    561 20091101:
    562         After updating, it may be necessary to make the 'cleandir'
    563         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    564         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    565         src/tools/lex/ and src/usr.bin/lex/.
    566 
    567 20091001:
    568 	On amd64 you must rebuild tools (to get the new binutils)
    569 	before building a kernel, or the build fails on cpufunc.S.
    570 
    571 20091001:
    572 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    573 	symlink, failing the build.  Delete the link, and the subdir
    574 	it is in, and retry your build.
    575 
    576 20090718:
    577 	libc build changed so that strchr() provides the extra entry
    578 	point for index().  Update build of libc.a (and libc_pic.a)
    579 	may fail because the archive contains the unwanted index.o.
    580 	(Similarly for strrchr() and rindex().)
    581 
    582 20090709:
    583 	Native Xorg was upgraded again.  Builds will probably fail again
    584 	without a clean objdir, at least for src/external/mit/xorg.
    585 
    586 20090616:
    587 	Native Xorg was upgraded.  Builds will need a clean objdir for
    588 	src/external/mit/xorg.  Upgrading a system from sets will not
    589 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    590 	subdirectory has been changed into a file, and this needs to
    591 	be manually "rm -r"'ed before installing xbase.tgz.
    592 
    593 20090501:
    594 	Several new functions were added to string.h/libc, and this
    595 	can cause autoconf problems during the tool build for people
    596 	who fail to clean out their tools objects properly.  If you
    597 	note messages about stpcpy, stpncpy or strnlen accompanying a
    598 	failure during the tool build, clean out all your tools
    599 	objects and start again.
    600 
    601 20090325:
    602 	The i386 port was switched to i486 default toolchain.  This requires
    603 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    604 
    605 20090126:
    606 	The __posix_fadvise50 system call changed assembly stub type.  You
    607 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    608 	to avoid using the old assembly stub.
    609 
    610 20090202:
    611 	pkg_install now depends on the pkgdb cache for automatic conflict
    612 	detection.  It is recommended to rebuild the cache with
    613 	``pkg_admin rebuild''.
    614 
    615 20090110:
    616 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    617 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    618 	   This is needed even in the MODULAR kernel because there is
    619 	   conditionally compiled code in rtsock.c.
    620 	2. make sure build.sh completes and the binaries in a chroot work
    621 	   before installing.
    622 	3. If you don't use build.sh and you build directly to root, and
    623 	   your build breaks in the middle, don't despair.  Make sure headers
    624 	   are installed properly, and start building libraries first libc
    625 	   and libutil, install them and then continue building all the
    626 	   libraries in src/lib and src/gnu/lib and install them.  Once
    627 	   the new libraries are installed, you can restart the build.
    628 	4. If you compile packages and you notice link time warnings,
    629 	   rebuild the required packages to update their shared libraries.
    630 	   Any package you rebuild will require rebuilding all the packages
    631 	   that depend on it.
    632 	5. Next time you run pwd_mkdb with the new binary, the file
    633 	   will be upgraded and it will not be backwards compatible.
    634 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    635 	   lastlogx(5)) have been versioned, and there is a heuristic
    636 	   for utmp.  You are better off removing the old files after
    637 	   upgrading.  The automated clearing of /var/run during
    638 	   boot, and the automated rotating of files in /var/log by
    639 	   newsyslog(8), may mean that you do not have to remove the
    640 	   files manually.
    641 	7. The optional accounting file (/var/account/acct, see
    642 	   accton(8)) has not been versioned, and will need to be
    643 	   removed.  The automatic rotation of the accounting file by
    644 	   /etc/daily limits the bad consequences of failure to remove
    645 	   the file.
    646 	8. Application software that writes time_t to binary files on
    647 	   disk will break or need attention.  Most notably: if you are
    648 	   using PostgreSQL < 8.4, you need to dump your databases,
    649 	   rebuild PostgreSQL with the new time_t, then restore.
    650 
    651 20081219:
    652 	config(1) has been updated, and one of the files it creates -
    653 	swapnetbsd.o - has changed format.  You need to rebuild config
    654 	(done automatically by build.sh) and then you need to rerun
    655 	config on all kernel configuration files before rebuilding those
    656 	kernels.
    657 
    658 20081205:
    659 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    660 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    661 	set and will appear as extra files for MKX11=no update builds.
    662 
    663 20081122:
    664 	On i386, various kernel options(4) in GENERIC including
    665 	file systems have been disabled and moved into kernel modules.
    666 	Before trying a new GENERIC kernel, you have to prepare the
    667 	following files as well as a new GENERIC kernel:
    668 
    669 	- build and install kernel modules from src/sys/modules
    670 
    671 	- install the latest bootloader, which will load a module
    672 	  for the file system from which the kernel is loaded automatically
    673 
    674 	If you have to load your kernel from a file system which is not of
    675 	the same type as the root file system, you have to load the necessary
    676 	file system module manually on the boot prompt or in the boot.cfg file.
    677 
    678 20080827:
    679 	If you built and installed a libc from sources between
    680 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    681 	which results in false errors reported by lint(1).
    682 	Since this breaks the libc build itself, manual help is
    683 	needed -- lint must be disabled temporarily, e.g.:
    684 	  $ (cd lib/libc && make MKLINT=no dependall install)
    685 
    686 20080813:
    687 	MKDEBUG build was broken because the .depend files did not know
    688 	about .go files.  You need to remove all .depend files and rebuild.
    689 
    690 20080802:
    691 	A regression in binary compatibility for pthread_mutex_t has
    692 	been fixed.  Unfortunately, the price is breaking compatibility
    693 	for -current.
    694 
    695 	Threaded programs (using libpthread) and C++ programs (using
    696 	libstdc++) compiled after 20070907 and before 20080802 need to
    697 	be recompiled.
    698 
    699 	One way to find affected pkgsrc packages:
    700 
    701 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    702 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    703 
    704 20080731:
    705 	WAPBL (metadata journaling support) has been added, but at this
    706 	time isn't backwards compatible with pre-WAPBL aware kernels
    707 	and userland (fsck_ffs in particular).  Please make sure you
    708 	don't use a journaled filesystem with an older kernel/userland,
    709 	especially an uncleanly mounted journaled filesystem.  WAPBL
    710 	also requires the super block to be in the UFS2 format.  You
    711 	can use fsck_ffs -c 4 to update the superblock format.
    712 
    713 20080721:
    714 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    715 	isn't defined.
    716 
    717 20080531:
    718 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    719 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    720 	utility needs to be rebuilt and reinstalled as older binaries
    721 	won't work correctly.  The following sequence of commands:
    722 
    723 	  $ (cd sys/sys/ && nbmake-$arch includes)
    724 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    725 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    726 
    727 	leaves new drvctl utility in sbin/drvctl build directory.
    728 
    729 20080503:
    730 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    731 
    732 20080521:
    733 	For a while, unprivileged UPDATE builds would fail to
    734 	succeed at the checkflist stage, complaining that
    735 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    736 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    737 	If you already hit this problem, update the .mk file,
    738 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    739 
    740 20080303:
    741 	Linker warnings are now fatal if $WARNS>0.
    742 
    743 20080126:
    744 	The posix_fadvise system call has been changed from an assembly
    745 	stub, to a c file that calls an assembly stub.  You need to
    746 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    747 	avoid using the old assembly stub.
    748 
    749 20071209:
    750 	The acpiec(4) driver has been split into two attachments.  If you
    751 	get ACPI errors before the attachment, please update your kernel
    752 	configuration file appropriately or see GENERIC for more details.
    753 
    754 20071115:
    755 	The it(4) driver has been renamed to itesio(4) and the old port
    756 	argument specified in the kernel configuration file is not valid
    757 	anymore.  The itesio(4) driver now uses the Super I/O address port
    758 	rather than the EC address port.  Please update your kernel
    759 	configuration file appropriately or see GENERIC for more details.
    760 
    761 20071028:
    762 	The pccons(4) driver has been removed from the NetBSD/shark port.
    763 	You need to update any custom kernel configuration file you have
    764 	to remove any references to pccons (which includes removing the
    765 	now useless XSERVER option) and replace them with the correct
    766 	entries for the wscons driver.  See the GENERIC configuration file
    767 	for more details.
    768 
    769 20070913:
    770 	A latent bug in dhclient/dhcpd that caused it to be unable to
    771 	enumerate interfaces was fixed.  The bug began to cause
    772 	problems after 20070911 when the kernel's SIOCGIFCONF
    773 	implementation was repaired.  From 20070529 to 20070911 racoon
    774 	could not enumerate interfaces.  (These are noted because
    775 	normal kernel/userspace version matching hygiene is not
    776 	sufficient to avoid this problem.)  Ensure that both kernel
    777 	and userland are from after 20070913.
    778 
    779 20070703:
    780 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    781 	calls the target-specific strip program, and the logic to pass
    782 	down STRIP from make has been removed.  This requires a
    783 	re-installation of tools.
    784 
    785 20070422:
    786 	The way OS emulations lookup filenames inside the emulation root
    787 	has been changed.  Rather than modify the pathname (and copy back
    788 	to userspace) namei() and lookup() directly check the emulation
    789 	root.  One side effect is that absolute symlinks inside the emulated
    790 	root file system will be relative to that file system - unless they
    791 	start /../ this is useful when the emulated root is a real install
    792 	that has such links.
    793 	This might affect symlinks that have been added to reference outside
    794 	the emulated root.
    795 
    796 20070412:
    797 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    798 	instead.  See the GENERIC32_IP3x kernel configuration for an
    799 	example.
    800 
    801 20070319:
    802         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    803         on many platforms due to incorrect flags settings.  If you
    804         updated and built after about 20070315, do "nbmake-$arch
    805 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    806 	rebuild of object files that might have been built
    807 	incorrectly, and ensure that you have at least
    808 	src/lib/libc/Makefile 1.130.
    809 
    810 20070210:
    811         src/sys/sys/{sa.h,savar.h} were removed.
    812           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    813               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    814         will allow dependencies on those files to get get rebuilt
    815 
    816 20070209:
    817         The threading model was changed when the newlock2 branch
    818         was merged to NetBSD-current.  If you boot with a new
    819         kernel (version 4.99.10), then you also need a new pthread
    820         library (/usr/lib/libpthread.so.0.7).  If you boot with
    821         an old kernel, then you need the old pthread library
    822         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    823         the pthread library in sync, old threaded applications should
    824         continue to work with an old or new kernel.  Note that named(8)
    825 	is the only threaded application in the base system.
    826 
    827 20061214:
    828 	Following the move of string_to_flags() and flags_to_string()
    829 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    830 	will need to do a "make cleandir" in
    831 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    832 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    833 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    834 		as the installation images in distrib/
    835 	in order to excise stale references to the old stat_flags.h header
    836 	file in the ls sources -- stat_flags.h has been removed.
    837 
    838 20061108:
    839 	The configure script used in the src/tools/gcc compiler has been
    840 	changed to indicate that our libc has ssp support built-in and
    841 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    842 	make clean in src/tools/gcc first to rebuild the compiler.
    843 
    844 20061009:
    845 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    846 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    847 
    848 20060814:
    849 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    850 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    851 	kernel configuration for an example.  X servers from the last
    852 	few years should cope.
    853 
    854 20060703:
    855 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    856 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    857 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    858 
    859 20060627:
    860 	socket(2) has changed, and its system call has been versioned.
    861 	For userlands with the old version of socket(2), make sure that
    862 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    863 	errors will result.
    864 
    865 Hints for a more successful build:
    866 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    867     Use build.sh, but do not use its "expert mode":
    868 	This will automatically build the tools in the
    869 	   correct order, and it will keep the tools and the
    870 	   new build products from interfering with the running
    871 	   system.  This will allow you to ignore most of the
    872 	   other advice in this file.
    873     Build a new kernel first:
    874 	This makes sure that any new system calls or features
    875 	   expected by the new userland will be present.  This
    876 	   helps to avoid critical errors when upgrading.
    877     Use object directories:
    878 	This helps to keep stale object
    879 	   files from polluting the build if a Makefile "forgets"
    880 	   about one.  It also makes it easier to clean up after
    881 	   a build.  It's also necessary if you want to use the
    882 	   same source tree for multiple machines.
    883 	   To use object directories with build.sh:
    884 	    a) invoke build.sh with the "-M" or "-O" options.
    885 	   To use object directories without using build.sh:
    886 	    a) cd /usr/src ; make cleandir
    887 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    888 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    889 	    d) cd /usr/src ; make build
    890 	   Note that running "make obj" in a directory will create
    891 	   in obj.$MACHINE directory.
    892     Build to a DESTDIR:
    893 	This helps to keep old installed files (especially libraries)
    894 	   from interfering with the new build.
    895 	   To build to a DESTDIR with build.sh, use the "-D" option.
    896 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    897 	   environment variable before running make build.  It should be
    898 	   set to the pathname of an initially empty directory.
    899 	   Problems: if you do not use build.sh, you might need to
    900 		update critical utilities without using DESTDIR since
    901 		nothing is executed from what is installed in DESTDIR.
    902 		(See critical utils, below.)
    903     Build often:
    904 	This keeps critical utilities current enough to not choke
    905 	on any other part of the source tree that depends on up to
    906 	date functionality.  If you use build.sh, you should not have
    907 	this problem.
    908 
    909 What to do if things don't work:
    910 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    911 When things don't work there are usually a few things that commonly
    912 should be done.
    913     1)	make includes
    914 	This should be done automatically by make build.
    915     2)  cd share/mk && make install
    916 	Again, automatically done by make build.
    917 
    918 Failsafe rebuild of a small part of the tree:
    919 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    920 To make sure you rebuild something correctly you want to do
    921 something like the following:
    922     1)  Make sure the includes and .mk files are up to date.
    923     2)  Make sure any program used to build the particular
    924 	utility is up to date.  (yacc, lex, etc...)
    925     3)  cd ...path/to/util...
    926 	make cleandir
    927 	rm ...all obj directories...
    928 	make cleandir			# yes, again
    929 	make obj
    930 	make depend && make
    931 
    932 Failsafe rebuild of the entire tree:
    933 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    934 If you really want to make sure the source tree is clean and
    935 ready for a build try the following.  Note that sourcing /etc/mk.conf
    936 (a make(1) Makefile) in this manner is not right, and will not work
    937 for anyone who uses any make(1) features in /etc/mk.conf.
    938 
    939 ---cut here---
    940 #!/bin/sh
    941 . /etc/mk.conf
    942 
    943 if [ -z $NETBSDSRCDIR ] ; then
    944     NETBSDSRCDIR=/usr/src
    945 fi
    946 if [ \! -d $NETBSDSRCDIR ] ; then
    947     echo Unable to find sources
    948     exit 1
    949 fi
    950 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    951 
    952 if [ -z $BSDOBJDIR ] ; then
    953     BSDOBJDIR=/usr/obj
    954 fi
    955 if [ -d $BSDOBJDIR ] ; then
    956     rm -rf $BSDOBJDIR
    957 fi
    958 
    959 cd $NETBSDSRCDIR && make cleandir
    960 
    961 ---cut here---
    962 
    963 Critical utilities:
    964 ^^^^^^^^^^^^^^^^^^^
    965 	usr.bin/compile_et
    966 	usr.bin/make
    967 	usr.bin/yacc
    968 	usr.bin/lex
    969 	usr.bin/xlint
    970 	usr.bin/config
    971 
    972 Other problems and possible solutions:
    973 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    974 Symptom:Complaints involving a Makefile.
    975 Fix:	Rebuild usr.bin/make:
    976 	cd usr.bin/make && make && make install
    977 	Or, a failsafe method if that doesn't work:
    978 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    979 
    980 Fix:	Make sure .mk files are up to date.
    981 	cd share/mk && make install
    982 
    983 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    984 Fix:	Rebuild usr.bin/config
    985 
    986 Symptom:
    987 Fix:	Rebuild usr.bin/yacc
    988 
    989 Symptom:
    990 Fix:	Rebuild usr.bin/lex
    991 
    992 Symptom:
    993 Fix:	rm /usr/lib/libbfd.a
    994 
    995 Symptom:Obsolete intermediate files are used during compilation
    996 Fix:	Try the following sequence of commands in the directory in question.
    997 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    998 	(If you built the tree without "make obj" in the past, obsolete files
    999 	may remain.  The command tries to clean everything up)
   1000 
   1001 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
   1002 	pointer type
   1003 Fix:	Rebuild and install usr.bin/menuc
   1004 
   1005 Symptom:mklocale not found during build in share/locale/ctype
   1006 Fix:	Build and install usr.bin/mklocale
   1007 
   1008 Symptom:undefined reference to `__assert13' or `__unsetenv13'
   1009 Fix:    Rebuild and install lib/libc
   1010 
   1011 Symptom:usr.bin/config fails to build.
   1012 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
   1013 
   1014 Symptom:undefined reference to `getprogname' or `setprogname'
   1015 Fix:    Rebuild and install lib/libc
   1016 
   1017 Symptom:lint does not understand the '-X' option
   1018 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
   1019 
   1020 Symptom:Update build fails in src/tools/gcc complaining that a variable
   1021 	(e.g. CPPFLAGS) has changed since the previous run.
   1022 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
   1023 
   1024 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
   1025 	No such file or directory.
   1026 Cause:	If a directory is created by mistake, then it is sometimes
   1027 	deleted from the CVS repository using administrative commands
   1028 	that bypass the normal cvs access controls.  If your cvs working tree
   1029 	contains references to a directory that has been deleted on the
   1030 	server in this way, then "cvs update" reports this error.
   1031 Fix:	Recursively delete the affected directory from your working tree
   1032 	and try the update again.
   1033