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UPDATING revision 1.324
      1 $NetBSD: UPDATING,v 1.324 2021/11/20 16:18:18 martin Exp $
      2 
      3 This file (UPDATING) is intended to be a brief reference to recent
      4 changes that might cause problems in the build process, and a guide for
      5 what to do if something doesn't work.
      6 
      7 For a more detailed description of the recommended way to build NetBSD
      8 using build.sh, see the BUILDING file.
      9 
     10 Note that much of the advice in this UPDATING file was written before
     11 build.sh existed.  Nevertheless, the advice here may be useful for
     12 working around specific problems with build.sh.
     13 
     14 Sections are marked with "^^^^^".  After the section on "Recent changes"
     15 are several sections containing more general information.
     16 
     17 See also: BUILDING, build.sh, Makefile.
     18 
     19 Recent changes:
     20 ^^^^^^^^^^^^^^^
     21 
     22 20211116:
     23 	Changes in the xorg build require clean obj dirs for external/mit/xorg
     24 	(or a full clealn/non-update build).
     25 
     26 20211112:
     27 	Device tree sources were updated for evbarm.  Some device nodes
     28 	(in particular, ld(4) devices on the ROCKPro64) will be renumbered.
     29 
     30 20211014:
     31 	MKPIE default for aarch64 has changed, a clean build is required.
     32 
     33 20210917:
     34 	Changed MNT_ACLS to default to POSIX1e ACLs instead of NFSv4
     35 	ACLs, to be compatible with FreeBSD. If you are using NFSv4 ACLs
     36 	and have "acls" in /etc/fstab you'll need to change it to "nfs4acls".
     37 
     38 20210711:
     39 	Updated GMP sources may require cleaning in tools/gmp and/or in
     40 	external/lgpl3/gmp/lib, particularly if GCC itself does not build.
     41 
     42 20210417:
     43 	GCC 10 was enabled for several platforms.  If builds fail in either
     44 	tools/gcc or external/gpl/gcc, first try cleaning those objects and
     45 	removing the $DESTDIR/usr/include/g++ subdirectory.
     46 
     47 20201230:
     48 	lint1/ops.c is no longer autogenerated.  If this makes the build
     49 	fail, clean $OBJDIR/tools/*lint* and $OBJDIR/usr.bin/*xlint*.
     50 
     51 20201016:
     52 	MIPS kernel modules have been disabled until they work.  This will
     53 	turn up in extra files in the DESTDIR, which should be cleaned.
     54 
     55 20200925:
     56 	GNU MPC and MPFR have been updated.  At least MPFR needs cleaning
     57 	in both the tools and external dirs.
     58 
     59 20200912:
     60 	GCC 9 has arrived for Arm and x86 platforms, and will be coming
     61 	for several more, as will binutils 2.34.  Clean as required.
     62 
     63 20200907:
     64 	GCC 9 is coming, and binutils has been updated for MIPS.  This
     65 	probably requires cleaning the tools/binutils.
     66 
     67 20200811:
     68 	GCC updates may require cleaning the objdir.  This may occur
     69 	due to GCC 7.5 update, GCC 8.4 move to gcc.old, or the upcoming
     70 	GCC 9 upgrade.
     71 
     72 20200614:
     73 	blacklist* has been renamed to blocklist*. postinstall(8)
     74 	should handle the migration
     75 
     76 20200601:
     77 	Due to a mistake in LIBISPRIVATE handling, .so libraries were
     78 	created in the build directories and need cleaning.
     79 
     80 20200311:
     81 	GCC 8 ports will need cleaning in src/tools/gcc and
     82 	src/external/gpl3/gcc due to GCC 8.4 update.
     83 
     84 20191118:
     85 	More architectures were switched to gcc8:
     86 	    i386, ia64 powerpc64, sparc, sparc64, arm
     87 	The same comments as in 20191022 apply.
     88 
     89 20191112:
     90 	The LLVM update requires a clean rebuild for all architectures using
     91 	LLVM during the tools build phase (i386, amd64, aarch64).
     92 
     93 20191022:
     94 	Ports amd64 and aarch64 switched to GCC 8.3 by default.
     95 	In-place ("expert mode", build.sh -E) builds are not supported
     96 	when going from a GCC 7 userland to GCC 8. Do a regular
     97 	build to a different DESTDIR (or preferably: build.sh -U) at least
     98 	once and install sets, or download comp.{tar.xz,tgz} from the
     99 	daily builds and install that before doing the next in-place build.
    100 
    101 20191001:
    102 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
    103 	old builds with GCC 7 output now uses GCC 8.  Clean this
    104 	directory, and also clean src/external/gpl3/gcc.
    105 
    106 20190903:
    107 	Files with names that coincide with existing files' names on
    108 	case-insensitive file systems were inadvertently committed, for
    109 	radeon GPU firmware.  We cannot mark these as obsolete for
    110 	postinstall to fix, so if you updated src since 2019-08-26, and
    111 	ran build.sh distribution or ran build.sh release, you must
    112 	manually delete the following files in your DESTDIR (which is
    113 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
    114 	them:
    115 
    116 		/libdata/firmware/radeon/bonaire_ce.bin
    117 		/libdata/firmware/radeon/bonaire_mc.bin
    118 		/libdata/firmware/radeon/bonaire_me.bin
    119 		/libdata/firmware/radeon/bonaire_mec.bin
    120 		/libdata/firmware/radeon/bonaire_pfp.bin
    121 		/libdata/firmware/radeon/bonaire_rlc.bin
    122 		/libdata/firmware/radeon/bonaire_sdma.bin
    123 		/libdata/firmware/radeon/bonaire_smc.bin
    124 		/libdata/firmware/radeon/bonaire_uvd.bin
    125 		/libdata/firmware/radeon/hainan_ce.bin
    126 		/libdata/firmware/radeon/hainan_mc.bin
    127 		/libdata/firmware/radeon/hainan_me.bin
    128 		/libdata/firmware/radeon/hainan_pfp.bin
    129 		/libdata/firmware/radeon/hainan_rlc.bin
    130 		/libdata/firmware/radeon/hainan_smc.bin
    131 		/libdata/firmware/radeon/hawaii_ce.bin
    132 		/libdata/firmware/radeon/hawaii_mc.bin
    133 		/libdata/firmware/radeon/hawaii_me.bin
    134 		/libdata/firmware/radeon/hawaii_mec.bin
    135 		/libdata/firmware/radeon/hawaii_pfp.bin
    136 		/libdata/firmware/radeon/hawaii_rlc.bin
    137 		/libdata/firmware/radeon/hawaii_sdma.bin
    138 		/libdata/firmware/radeon/hawaii_smc.bin
    139 		/libdata/firmware/radeon/kabini_ce.bin
    140 		/libdata/firmware/radeon/kabini_me.bin
    141 		/libdata/firmware/radeon/kabini_mec.bin
    142 		/libdata/firmware/radeon/kabini_pfp.bin
    143 		/libdata/firmware/radeon/kabini_rlc.bin
    144 		/libdata/firmware/radeon/kabini_sdma.bin
    145 		/libdata/firmware/radeon/kaveri_ce.bin
    146 		/libdata/firmware/radeon/kaveri_me.bin
    147 		/libdata/firmware/radeon/kaveri_mec.bin
    148 		/libdata/firmware/radeon/kaveri_mec2.bin
    149 		/libdata/firmware/radeon/kaveri_pfp.bin
    150 		/libdata/firmware/radeon/kaveri_rlc.bin
    151 		/libdata/firmware/radeon/kaveri_sdma.bin
    152 		/libdata/firmware/radeon/mullins_ce.bin
    153 		/libdata/firmware/radeon/mullins_me.bin
    154 		/libdata/firmware/radeon/mullins_mec.bin
    155 		/libdata/firmware/radeon/mullins_pfp.bin
    156 		/libdata/firmware/radeon/mullins_rlc.bin
    157 		/libdata/firmware/radeon/mullins_sdma.bin
    158 		/libdata/firmware/radeon/oland_ce.bin
    159 		/libdata/firmware/radeon/oland_mc.bin
    160 		/libdata/firmware/radeon/oland_me.bin
    161 		/libdata/firmware/radeon/oland_pfp.bin
    162 		/libdata/firmware/radeon/oland_rlc.bin
    163 		/libdata/firmware/radeon/oland_smc.bin
    164 		/libdata/firmware/radeon/pitcairn_ce.bin
    165 		/libdata/firmware/radeon/pitcairn_mc.bin
    166 		/libdata/firmware/radeon/pitcairn_me.bin
    167 		/libdata/firmware/radeon/pitcairn_pfp.bin
    168 		/libdata/firmware/radeon/pitcairn_rlc.bin
    169 		/libdata/firmware/radeon/pitcairn_smc.bin
    170 		/libdata/firmware/radeon/tahiti_ce.bin
    171 		/libdata/firmware/radeon/tahiti_mc.bin
    172 		/libdata/firmware/radeon/tahiti_me.bin
    173 		/libdata/firmware/radeon/tahiti_pfp.bin
    174 		/libdata/firmware/radeon/tahiti_rlc.bin
    175 		/libdata/firmware/radeon/tahiti_smc.bin
    176 		/libdata/firmware/radeon/verde_ce.bin
    177 		/libdata/firmware/radeon/verde_mc.bin
    178 		/libdata/firmware/radeon/verde_me.bin
    179 		/libdata/firmware/radeon/verde_pfp.bin
    180 		/libdata/firmware/radeon/verde_rlc.bin
    181 		/libdata/firmware/radeon/verde_smc.bin
    182 
    183 	We will re-import these radeon firmware images another way
    184 	later.
    185 
    186 20190727:
    187 	The uefi bootloader has gained tftp support and needs a clean
    188 	build. If you do update builds, manually clean its object
    189 	directory by something like:
    190 	cd sys/arch/i386/stand/efiboot && make clean
    191 
    192 20190723:
    193 	The jemalloc allocator in libc is now build without extended
    194 	debugging (for performance reasons). In update builds make sure
    195 	to rebuild it completly, by removing all affected object files,
    196 	including compat builds, something like:
    197 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    198 
    199 20190207:
    200 	GCC 7 switched for many ports.  Update builds are likely to fail.
    201 
    202 20180924:
    203 	A newer OpenSSL version has been imported. If you are doing
    204 	update builds, make sure to remove all old obj dirs, like:
    205 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    206 
    207 20180717:
    208 	On aarch64 int64_t and related types have changed from long long
    209 	to long. This requires recompiling all C++ binaries.
    210 
    211 20180713:
    212 	On amd64 and i386 static binaries are now build position
    213 	independend. This requires recompilation of all object
    214 	files used to create the crunched /rescue binary.
    215 	Clean the rescue directory in your obj directory before
    216 	doing an update build, otherwise linking will fail.
    217 
    218 20180414:
    219 	Existing binutils was migrated to binutils.old.  Manual
    220 	removal of tools/binutils objects directory may be required
    221 	to fix tools build failure.
    222 
    223 20180311:
    224 	bdftopcf was updated and may need cleaning in the
    225 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    226 	link errors.
    227 
    228 20180212:
    229 	between OpenSSL and GCC updates, many things may fail to build.
    230 	any failure that looks like GCC or openssl is best handled by
    231 	a clean destdir and objdir.  Full cleandir and destdir deletion
    232 	is recommended if build failures occur.
    233 
    234 20171225:
    235 	removal of the vadvise syscall requires manual removal of all
    236 	associated files from the libc build object directory (including
    237 	the .depend files) - a command like:
    238 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    239 	For architectures that support multiple "compat" binary targets,
    240 	you'll need to cleanup both the regular libc directory and the
    241 	compat ones (the above command will do that).
    242 
    243 20171010:
    244 	a change to the build structure of external/bsd/acpica/bin/iasl
    245 	means that its objdir (or *.d and .depend at least) might need
    246 	to be manually removed - or a build done once without -u.
    247 
    248 20170822:
    249 	a new version of GMP has been imported and probably
    250 	will break parts of builds related to themselves or GCC, both
    251 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    252 	and MPC objdirs or build once without -u.
    253 
    254 20170816:
    255 	a new version of MPFR and MPC have been imported and probably
    256 	will break parts of builds related to themselves or GCC, both
    257 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    258 	and MPC objdirs or build once without -u.
    259 
    260 20170402:
    261 	a new version of dhcpcd has been imported, which does not support
    262 	update builds from the previous version. Remove your
    263 	external/bsd/dhcpcd object dir or build once without -u.
    264 
    265 20170211:
    266 	a new terminfo database has been imported.
    267 	The structure of it has changed slightly from prior versions and
    268 	an updated tic tool is required.
    269 	If you build.sh, don't use -u
    270 
    271 20170207:
    272 	various arch dependent libc/exect.S files were removed
    273 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    274 	if it exists) or do a clean build.
    275 	(This is a bug in the make system, it should be corrected without
    276 	human intervention, but isn't.)
    277 
    278 20170104:
    279 	xinput build options have changed.
    280 	Remove the obj directory (external/mit/xorg/bin/xinput)
    281 	if you build.sh -u
    282 
    283 20170103:
    284 	a new version of flex has been imported.
    285 	Remove the file from obj (external/bsd/flex)
    286 	if you build.sh -u
    287 
    288 20161014:
    289 	a new version of OpenSSL has been imported.
    290 	Remove the files from obj (crypto/external/bsd/openssl) 
    291 	if you build.sh -u
    292 
    293 20161009:
    294 	a new version of dhcpcd has been imported with slightly changed
    295 	build infrastructure. When doing a build.sh -u this requires
    296 	pruning the external/bsd/dhcpcd objdir.
    297 
    298 20160914:
    299 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    300 	ports in using xorg-server 1.18. This requires a clean destdir
    301 	and a clean objdir.
    302 
    303 20160527:
    304 	i386 needs a full cleandir or objdir deletion because PIE has
    305 	been enabled. (see the amd64 entry two down for further info)
    306 
    307 20160418:
    308 	libedit needs manual removal of all autogenerated files since
    309 	some of them are not autogenerated anymore. Remember that there
    310 	might be two copies of libedit if your platform builds "compat".
    311 
    312 20160410:
    313 	amd64 needs full "make cleandir" or deletion of objdir now that
    314 	PIE has been enabled for amd64.  PIE, or position-independent
    315 	executables, means all code, including executables and not just
    316 	shared libraries, is position-independent and hence able to be
    317 	relocated by ASLR, address space layout randomization.
    318 
    319 	The change was made in Makefile variables for compiler and
    320 	linker flags, for which make(1) does not record dependencies,
    321 	hence it is unable to detect that all .o files need rebuilding.
    322 
    323 	Partial rebuilds with some modified source files will likely
    324 	fail when linking executables, since the linker refuses to mix
    325 	position-independent code with position-dependent code in
    326 	position-independent executables:
    327 
    328 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    329 
    330 20160401:
    331 	Ports switching to GCC 5.3 will need a full "make cleandir".
    332 	Some people have found that cleandir is not sufficient, so if
    333 	in doubt delete the entire object directory tree for gcc.
    334 
    335 20160306:
    336 	NetBSD's regexp implementation is now part of libnbcompat.
    337 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    338 	non-NetBSD hosts if linked with stale object files produced
    339 	while they included a non-NetBSD regex.h.
    340 	In any case, you should "make cleandir" at least these tools
    341 	before updating your toolchain.
    342 
    343 20160125:
    344 	Dtrace has been enabled by default on some architectures.
    345 	When doing an update build, make sure to clean the etc/mtree
    346 	object directory before starting the build - otherwise the
    347 	needed directories in destdir will not be created.
    348 	An easy way to do this is:
    349 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    350 
    351 20150818:
    352 	New acpica requires "make cleandir" in src/external/bsd/acpica
    353 	again.
    354 
    355 20150413:
    356 	New acpica requires "make cleandir" and reinstalling yacc
    357 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    358 	also "make cleandir" in /usr/src/external/bsd/acpica.
    359 
    360 20150404:
    361 	Lint changes require a full rebuild of the tool, so make
    362 	sure to build without -u option to build.sh, or manually
    363 	do a make cleandir in src/tools/lint1 and
    364 	src/usr.bin/xlint.
    365 
    366 20150310:
    367 	Improvements to openssl for arm mean that update builds of
    368 	the openssl libraries will fail. A make cleandir in
    369 	external/bsd/openssl/lib is needed
    370 
    371 20141026:
    372 	A mishap during the import of pppd may cause your corruption
    373 	in your cvs directory if you happened to do a cvs update
    374 	during a short period of time. To fix, just remove the
    375 	directory src/external/bsd/ppp/dist/pppd completely
    376 	and let cvs restore it on next update.
    377 
    378 20140721:
    379 	The src/external/mit/lua/src directory was accidentally created
    380 	and then deleted in the CVS repository.  If you get errors like
    381 
    382 	cvs [update aborted]: cannot open directory
    383 	/cvsroot/src/external/mit/lua/src: No such file or directory
    384 
    385 	then delete your local copy of that directory tree and try again.
    386 
    387 20140530:
    388 	ARM eABI switched to DWARF based exception handling. This requires
    389 	rebuilding all C++ code. It is strongly advised to do a clean build.
    390 
    391 20140131:
    392 	The new compiler_rt/libc integration moved a few things. It is strongly
    393 	advised to do a clean build. At least lib/libc, the compat version(s)
    394 	of libc, libkern, rump and the kernels need to be cleaned.
    395 
    396 20131227:
    397 	1. The new ntpd runs in a restricted mode to prevent amplification
    398 	   attacks. If you need ntpdc to work you need to explicitly enable
    399 	   mode7 in your config file. Make sure you put the necessary restrict
    400 	   statements to avoid being exposed.
    401 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    402 	   to make clean in libc
    403 
    404 20131129:
    405 	The GMP sources were updated, and builds will likely fail without
    406 	cleaning their build trees for both tools and in-tree, like below.
    407 
    408 20131128:
    409 	The MPC and MPFR sources were updated, and builds may require their
    410 	tools and in-tree directories cleaned for successful updates.
    411 
    412 20130605:
    413 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    414 	to IPSEC (and the older IPSEC version removed).
    415 
    416 20130605:
    417 	Previous freetype installations erroneously installed private
    418 	header files. If you are building against a non-empty $DESTDIR,
    419 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    420 
    421 20130531:
    422 	The xdm update may cause build failure due to xdm.man being
    423 	in the obj tree.  Make sure to ensure any like this:
    424 		nbmake: nbmake: don't know how to make xdm.man. Stop
    425 	is fixed by deleting the xdm.man in the obj tree.
    426 
    427 20130530:
    428 	Updates of many xsrc packages will leave old .pc files around.
    429 	Best to clean out the xsrc objdir entirely before rebuilds.
    430 
    431 20130301:
    432 	The removal of netiso requires manual removal of /usr/include/netiso
    433 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    434 
    435 20120726:
    436 	The update of OpenSSL requires cleaning both the OpenSSL build
    437 	directory and DESTDIR.  *Even non-update builds require cleaning
    438 	DESTDIR.* Builds done without taking these steps may fail, or in
    439 	some cases may succeed and install broken OpenSSL libraries that
    440 	cause third-party software to link incorrectly and/or crash.
    441 
    442 20120507:
    443 	The database schema for makemandb was changed.  You will
    444 	need to update the database using 'makemandb -f' or wait
    445 	for the next weekly run to fix it.
    446 
    447 20120319:
    448 	sys/conf/Makefile.kern.inc has been modified to adjust the
    449 	size of db_symtab automatically.  You need to update dbsym in
    450 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    451 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    452 	mk.conf.
    453 
    454 20120216:
    455 	Default for MKCATPAGES changed to NO.  Update builds will fail
    456 	unless DESTDIR is cleaned manually.  If you built between 20120207
    457 	and 20120216, daily and weekly could have created an unreadable
    458 	/var/db/man.db index for apropos.  Running makemandb -f or
    459 	the next run of weekly will fix it.
    460 
    461 20111227:
    462 	If you built between 20111225 and 20111227 you need to remove
    463 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    464 	bump has been reverted.
    465 
    466 20111125:
    467 	The "rnd" pseudodevice has been added to sys/conf/std, which
    468 	means it should no longer be explicitly listed in kernel
    469 	configuration files.  The line "pseudo-device rnd" should be
    470 	removed from any custom kernel config files users may have.
    471 
    472 20111119:
    473 	A problem with the datastructures used by the rndctl(8)
    474 	utility (pointers in datastructures in an array, making 32->64
    475 	bit compatibility very painful) has been fixed in a
    476 	non-backwards-compatible way.  If you replace your kernel,
    477 	replace your rndctl executable too.
    478 
    479 20111001:
    480 	the prop_*_send_syscall() functions from proplib(3) have been
    481 	changed and their new version is not backward compatible with the old
    482 	one.  So ensure that all consumers of these functions (currently:
    483 	quota2 code and its tests) are updated together with the new lib.
    484 
    485 20110817:
    486 	sparc has been changed to use GCC 4.5.3, so any objdir or
    487 	DESTDIR for them should be deleted before updating.
    488 
    489 20110806:
    490 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    491 	objdir or DESTDIR for them should be deleted before updating.
    492 
    493 20110805:
    494 	The update to GCC 4.5.3 requires a non-trivial portion of
    495 	the tree to be cleaned.  Best to delete both objdir and
    496 	DESTDIR before running this update.  So far, only the
    497 	sparc64, mips and powerpc platforms have changed.
    498 
    499 20110803:
    500 	The layout of external/public-domain/xz has changed.  To do an
    501 	update build you will have to remove the contents of the OBJDIR
    502 	for external/public-domain/xz/bin by hand as the xz entry there
    503 	is now a directory.
    504 
    505 20110410:
    506 	The configuration of src/tools/gcc has changed.  To do an
    507 	update build you have to clean both tools/binutils and
    508 	tools/gcc by hand.
    509 
    510 20110328:
    511 	Building the Xorg binary was moved into a subdirectory to fix
    512 	ordering issues with "make all".  It may be necessary to remove
    513 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    514 	if your update build fails, as the "Xorg" entry there is now a
    515 	directory.
    516 
    517 20110121:
    518 	Assembler files no longer use -traditional-cpp.  This can break
    519 	the build of individual parts of the tree.  This is handled
    520 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    521 	and re-run config(1) for any kernel configurations as needed.
    522 
    523 20101217:
    524 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    525 	by default.  It may be necessary to manually update passwd(5) and
    526 	group(5) in order to make the program work with existing setups.
    527 
    528 20101125:
    529 	The latest changes to setenv(3) dissallow setting environment
    530 	variables with names that contain '='.  Revision 1.18 of env.c
    531 	assumed that this was allowed.  Installing a new libc with an
    532 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    533 	break which affects the autoconf tests for dependency finding,
    534 	so building gcc will end up printing:
    535 	    checking dependency style of gcc... none
    536 	    configure: error: no usable dependency style found
    537 	Fix it by rebuilding and re-installing env.
    538 
    539 20101119:
    540 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    541 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    542 	have any build problems with xsrc, or problems with mismatched
    543 	versions between xorg-server and drivers.
    544 
    545 20100604:
    546 	The update of ATF to 0.9 causes old tests written in shell to fail
    547 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    548 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    549 	trees by hand.
    550 
    551 20100522:
    552 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    553 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    554 	build problems with xsrc.
    555 
    556 20100522:
    557 	private section of <ctype.h> was split, and now mklocale(1)
    558 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    559 
    560 20100520:
    561 	The location of the xkb compiled descriptions has changed.  Please
    562 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    563 
    564 20100222:
    565 	The shared objects file extension has been changed from .so to
    566 	.pico, in order to avoid conflicts with shared libraries names
    567 	libXX.so.  All now stale regular .so files can be removed from
    568 	your object directories.
    569 
    570 20100204:
    571 	The termcap database has been removed from the sources,
    572 	but has not been marked obsolete so it is not removed
    573 	from the system when upgrading.
    574 	As such, you will need to remove them from your object
    575 	and destination directories.
    576 
    577 20091101:
    578         After updating, it may be necessary to make the 'cleandir'
    579         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    580         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    581         src/tools/lex/ and src/usr.bin/lex/.
    582 
    583 20091001:
    584 	On amd64 you must rebuild tools (to get the new binutils)
    585 	before building a kernel, or the build fails on cpufunc.S.
    586 
    587 20091001:
    588 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    589 	symlink, failing the build.  Delete the link, and the subdir
    590 	it is in, and retry your build.
    591 
    592 20090718:
    593 	libc build changed so that strchr() provides the extra entry
    594 	point for index().  Update build of libc.a (and libc_pic.a)
    595 	may fail because the archive contains the unwanted index.o.
    596 	(Similarly for strrchr() and rindex().)
    597 
    598 20090709:
    599 	Native Xorg was upgraded again.  Builds will probably fail again
    600 	without a clean objdir, at least for src/external/mit/xorg.
    601 
    602 20090616:
    603 	Native Xorg was upgraded.  Builds will need a clean objdir for
    604 	src/external/mit/xorg.  Upgrading a system from sets will not
    605 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    606 	subdirectory has been changed into a file, and this needs to
    607 	be manually "rm -r"'ed before installing xbase.tgz.
    608 
    609 20090501:
    610 	Several new functions were added to string.h/libc, and this
    611 	can cause autoconf problems during the tool build for people
    612 	who fail to clean out their tools objects properly.  If you
    613 	note messages about stpcpy, stpncpy or strnlen accompanying a
    614 	failure during the tool build, clean out all your tools
    615 	objects and start again.
    616 
    617 20090325:
    618 	The i386 port was switched to i486 default toolchain.  This requires
    619 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    620 
    621 20090126:
    622 	The __posix_fadvise50 system call changed assembly stub type.  You
    623 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    624 	to avoid using the old assembly stub.
    625 
    626 20090202:
    627 	pkg_install now depends on the pkgdb cache for automatic conflict
    628 	detection.  It is recommended to rebuild the cache with
    629 	``pkg_admin rebuild''.
    630 
    631 20090110:
    632 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    633 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    634 	   This is needed even in the MODULAR kernel because there is
    635 	   conditionally compiled code in rtsock.c.
    636 	2. make sure build.sh completes and the binaries in a chroot work
    637 	   before installing.
    638 	3. If you don't use build.sh and you build directly to root, and
    639 	   your build breaks in the middle, don't despair.  Make sure headers
    640 	   are installed properly, and start building libraries first libc
    641 	   and libutil, install them and then continue building all the
    642 	   libraries in src/lib and src/gnu/lib and install them.  Once
    643 	   the new libraries are installed, you can restart the build.
    644 	4. If you compile packages and you notice link time warnings,
    645 	   rebuild the required packages to update their shared libraries.
    646 	   Any package you rebuild will require rebuilding all the packages
    647 	   that depend on it.
    648 	5. Next time you run pwd_mkdb with the new binary, the file
    649 	   will be upgraded and it will not be backwards compatible.
    650 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    651 	   lastlogx(5)) have been versioned, and there is a heuristic
    652 	   for utmp.  You are better off removing the old files after
    653 	   upgrading.  The automated clearing of /var/run during
    654 	   boot, and the automated rotating of files in /var/log by
    655 	   newsyslog(8), may mean that you do not have to remove the
    656 	   files manually.
    657 	7. The optional accounting file (/var/account/acct, see
    658 	   accton(8)) has not been versioned, and will need to be
    659 	   removed.  The automatic rotation of the accounting file by
    660 	   /etc/daily limits the bad consequences of failure to remove
    661 	   the file.
    662 	8. Application software that writes time_t to binary files on
    663 	   disk will break or need attention.  Most notably: if you are
    664 	   using PostgreSQL < 8.4, you need to dump your databases,
    665 	   rebuild PostgreSQL with the new time_t, then restore.
    666 
    667 20081219:
    668 	config(1) has been updated, and one of the files it creates -
    669 	swapnetbsd.o - has changed format.  You need to rebuild config
    670 	(done automatically by build.sh) and then you need to rerun
    671 	config on all kernel configuration files before rebuilding those
    672 	kernels.
    673 
    674 20081205:
    675 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    676 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    677 	set and will appear as extra files for MKX11=no update builds.
    678 
    679 20081122:
    680 	On i386, various kernel options(4) in GENERIC including
    681 	file systems have been disabled and moved into kernel modules.
    682 	Before trying a new GENERIC kernel, you have to prepare the
    683 	following files as well as a new GENERIC kernel:
    684 
    685 	- build and install kernel modules from src/sys/modules
    686 
    687 	- install the latest bootloader, which will load a module
    688 	  for the file system from which the kernel is loaded automatically
    689 
    690 	If you have to load your kernel from a file system which is not of
    691 	the same type as the root file system, you have to load the necessary
    692 	file system module manually on the boot prompt or in the boot.cfg file.
    693 
    694 20080827:
    695 	If you built and installed a libc from sources between
    696 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    697 	which results in false errors reported by lint(1).
    698 	Since this breaks the libc build itself, manual help is
    699 	needed -- lint must be disabled temporarily, e.g.:
    700 	  $ (cd lib/libc && make MKLINT=no dependall install)
    701 
    702 20080813:
    703 	MKDEBUG build was broken because the .depend files did not know
    704 	about .go files.  You need to remove all .depend files and rebuild.
    705 
    706 20080802:
    707 	A regression in binary compatibility for pthread_mutex_t has
    708 	been fixed.  Unfortunately, the price is breaking compatibility
    709 	for -current.
    710 
    711 	Threaded programs (using libpthread) and C++ programs (using
    712 	libstdc++) compiled after 20070907 and before 20080802 need to
    713 	be recompiled.
    714 
    715 	One way to find affected pkgsrc packages:
    716 
    717 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    718 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    719 
    720 20080731:
    721 	WAPBL (metadata journaling support) has been added, but at this
    722 	time isn't backwards compatible with pre-WAPBL aware kernels
    723 	and userland (fsck_ffs in particular).  Please make sure you
    724 	don't use a journaled filesystem with an older kernel/userland,
    725 	especially an uncleanly mounted journaled filesystem.  WAPBL
    726 	also requires the super block to be in the UFS2 format.  You
    727 	can use fsck_ffs -c 4 to update the superblock format.
    728 
    729 20080721:
    730 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    731 	isn't defined.
    732 
    733 20080531:
    734 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    735 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    736 	utility needs to be rebuilt and reinstalled as older binaries
    737 	won't work correctly.  The following sequence of commands:
    738 
    739 	  $ (cd sys/sys/ && nbmake-$arch includes)
    740 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    741 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    742 
    743 	leaves new drvctl utility in sbin/drvctl build directory.
    744 
    745 20080503:
    746 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    747 
    748 20080521:
    749 	For a while, unprivileged UPDATE builds would fail to
    750 	succeed at the checkflist stage, complaining that
    751 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    752 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    753 	If you already hit this problem, update the .mk file,
    754 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    755 
    756 20080303:
    757 	Linker warnings are now fatal if $WARNS>0.
    758 
    759 20080126:
    760 	The posix_fadvise system call has been changed from an assembly
    761 	stub, to a c file that calls an assembly stub.  You need to
    762 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    763 	avoid using the old assembly stub.
    764 
    765 20071209:
    766 	The acpiec(4) driver has been split into two attachments.  If you
    767 	get ACPI errors before the attachment, please update your kernel
    768 	configuration file appropriately or see GENERIC for more details.
    769 
    770 20071115:
    771 	The it(4) driver has been renamed to itesio(4) and the old port
    772 	argument specified in the kernel configuration file is not valid
    773 	anymore.  The itesio(4) driver now uses the Super I/O address port
    774 	rather than the EC address port.  Please update your kernel
    775 	configuration file appropriately or see GENERIC for more details.
    776 
    777 20071028:
    778 	The pccons(4) driver has been removed from the NetBSD/shark port.
    779 	You need to update any custom kernel configuration file you have
    780 	to remove any references to pccons (which includes removing the
    781 	now useless XSERVER option) and replace them with the correct
    782 	entries for the wscons driver.  See the GENERIC configuration file
    783 	for more details.
    784 
    785 20070913:
    786 	A latent bug in dhclient/dhcpd that caused it to be unable to
    787 	enumerate interfaces was fixed.  The bug began to cause
    788 	problems after 20070911 when the kernel's SIOCGIFCONF
    789 	implementation was repaired.  From 20070529 to 20070911 racoon
    790 	could not enumerate interfaces.  (These are noted because
    791 	normal kernel/userspace version matching hygiene is not
    792 	sufficient to avoid this problem.)  Ensure that both kernel
    793 	and userland are from after 20070913.
    794 
    795 20070703:
    796 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    797 	calls the target-specific strip program, and the logic to pass
    798 	down STRIP from make has been removed.  This requires a
    799 	re-installation of tools.
    800 
    801 20070422:
    802 	The way OS emulations lookup filenames inside the emulation root
    803 	has been changed.  Rather than modify the pathname (and copy back
    804 	to userspace) namei() and lookup() directly check the emulation
    805 	root.  One side effect is that absolute symlinks inside the emulated
    806 	root file system will be relative to that file system - unless they
    807 	start /../ this is useful when the emulated root is a real install
    808 	that has such links.
    809 	This might affect symlinks that have been added to reference outside
    810 	the emulated root.
    811 
    812 20070412:
    813 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    814 	instead.  See the GENERIC32_IP3x kernel configuration for an
    815 	example.
    816 
    817 20070319:
    818         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    819         on many platforms due to incorrect flags settings.  If you
    820         updated and built after about 20070315, do "nbmake-$arch
    821 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    822 	rebuild of object files that might have been built
    823 	incorrectly, and ensure that you have at least
    824 	src/lib/libc/Makefile 1.130.
    825 
    826 20070210:
    827         src/sys/sys/{sa.h,savar.h} were removed.
    828           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    829               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    830         will allow dependencies on those files to get get rebuilt
    831 
    832 20070209:
    833         The threading model was changed when the newlock2 branch
    834         was merged to NetBSD-current.  If you boot with a new
    835         kernel (version 4.99.10), then you also need a new pthread
    836         library (/usr/lib/libpthread.so.0.7).  If you boot with
    837         an old kernel, then you need the old pthread library
    838         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    839         the pthread library in sync, old threaded applications should
    840         continue to work with an old or new kernel.  Note that named(8)
    841 	is the only threaded application in the base system.
    842 
    843 20061214:
    844 	Following the move of string_to_flags() and flags_to_string()
    845 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    846 	will need to do a "make cleandir" in
    847 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    848 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    849 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    850 		as the installation images in distrib/
    851 	in order to excise stale references to the old stat_flags.h header
    852 	file in the ls sources -- stat_flags.h has been removed.
    853 
    854 20061108:
    855 	The configure script used in the src/tools/gcc compiler has been
    856 	changed to indicate that our libc has ssp support built-in and
    857 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    858 	make clean in src/tools/gcc first to rebuild the compiler.
    859 
    860 20061009:
    861 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    862 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    863 
    864 20060814:
    865 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    866 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    867 	kernel configuration for an example.  X servers from the last
    868 	few years should cope.
    869 
    870 20060703:
    871 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    872 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    873 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    874 
    875 20060627:
    876 	socket(2) has changed, and its system call has been versioned.
    877 	For userlands with the old version of socket(2), make sure that
    878 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    879 	errors will result.
    880 
    881 Hints for a more successful build:
    882 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    883     Use build.sh, but do not use its "expert mode":
    884 	This will automatically build the tools in the
    885 	   correct order, and it will keep the tools and the
    886 	   new build products from interfering with the running
    887 	   system.  This will allow you to ignore most of the
    888 	   other advice in this file.
    889     Build a new kernel first:
    890 	This makes sure that any new system calls or features
    891 	   expected by the new userland will be present.  This
    892 	   helps to avoid critical errors when upgrading.
    893     Use object directories:
    894 	This helps to keep stale object
    895 	   files from polluting the build if a Makefile "forgets"
    896 	   about one.  It also makes it easier to clean up after
    897 	   a build.  It's also necessary if you want to use the
    898 	   same source tree for multiple machines.
    899 	   To use object directories with build.sh:
    900 	    a) invoke build.sh with the "-M" or "-O" options.
    901 	   To use object directories without using build.sh:
    902 	    a) cd /usr/src ; make cleandir
    903 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    904 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    905 	    d) cd /usr/src ; make build
    906 	   Note that running "make obj" in a directory will create
    907 	   in obj.$MACHINE directory.
    908     Build to a DESTDIR:
    909 	This helps to keep old installed files (especially libraries)
    910 	   from interfering with the new build.
    911 	   To build to a DESTDIR with build.sh, use the "-D" option.
    912 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    913 	   environment variable before running make build.  It should be
    914 	   set to the pathname of an initially empty directory.
    915 	   Problems: if you do not use build.sh, you might need to
    916 		update critical utilities without using DESTDIR since
    917 		nothing is executed from what is installed in DESTDIR.
    918 		(See critical utils, below.)
    919     Build often:
    920 	This keeps critical utilities current enough to not choke
    921 	on any other part of the source tree that depends on up to
    922 	date functionality.  If you use build.sh, you should not have
    923 	this problem.
    924 
    925 What to do if things don't work:
    926 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    927 When things don't work there are usually a few things that commonly
    928 should be done.
    929     1)	make includes
    930 	This should be done automatically by make build.
    931     2)  cd share/mk && make install
    932 	Again, automatically done by make build.
    933 
    934 Failsafe rebuild of a small part of the tree:
    935 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    936 To make sure you rebuild something correctly you want to do
    937 something like the following:
    938     1)  Make sure the includes and .mk files are up to date.
    939     2)  Make sure any program used to build the particular
    940 	utility is up to date.  (yacc, lex, etc...)
    941     3)  cd ...path/to/util...
    942 	make cleandir
    943 	rm ...all obj directories...
    944 	make cleandir			# yes, again
    945 	make obj
    946 	make depend && make
    947 
    948 Failsafe rebuild of the entire tree:
    949 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    950 If you really want to make sure the source tree is clean and
    951 ready for a build try the following.  Note that sourcing /etc/mk.conf
    952 (a make(1) Makefile) in this manner is not right, and will not work
    953 for anyone who uses any make(1) features in /etc/mk.conf.
    954 
    955 ---cut here---
    956 #!/bin/sh
    957 . /etc/mk.conf
    958 
    959 if [ -z $NETBSDSRCDIR ] ; then
    960     NETBSDSRCDIR=/usr/src
    961 fi
    962 if [ \! -d $NETBSDSRCDIR ] ; then
    963     echo Unable to find sources
    964     exit 1
    965 fi
    966 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    967 
    968 if [ -z $BSDOBJDIR ] ; then
    969     BSDOBJDIR=/usr/obj
    970 fi
    971 if [ -d $BSDOBJDIR ] ; then
    972     rm -rf $BSDOBJDIR
    973 fi
    974 
    975 cd $NETBSDSRCDIR && make cleandir
    976 
    977 ---cut here---
    978 
    979 Critical utilities:
    980 ^^^^^^^^^^^^^^^^^^^
    981 	usr.bin/compile_et
    982 	usr.bin/make
    983 	usr.bin/yacc
    984 	usr.bin/lex
    985 	usr.bin/xlint
    986 	usr.bin/config
    987 
    988 Other problems and possible solutions:
    989 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    990 Symptom:Complaints involving a Makefile.
    991 Fix:	Rebuild usr.bin/make:
    992 	cd usr.bin/make && make && make install
    993 	Or, a failsafe method if that doesn't work:
    994 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    995 
    996 Fix:	Make sure .mk files are up to date.
    997 	cd share/mk && make install
    998 
    999 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
   1000 Fix:	Rebuild usr.bin/config
   1001 
   1002 Symptom:
   1003 Fix:	Rebuild usr.bin/yacc
   1004 
   1005 Symptom:
   1006 Fix:	Rebuild usr.bin/lex
   1007 
   1008 Symptom:
   1009 Fix:	rm /usr/lib/libbfd.a
   1010 
   1011 Symptom:Obsolete intermediate files are used during compilation
   1012 Fix:	Try the following sequence of commands in the directory in question.
   1013 	make cleandir; rm `make print-objdir`; make cleandir; make obj
   1014 	(If you built the tree without "make obj" in the past, obsolete files
   1015 	may remain.  The command tries to clean everything up)
   1016 
   1017 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
   1018 	pointer type
   1019 Fix:	Rebuild and install usr.bin/menuc
   1020 
   1021 Symptom:mklocale not found during build in share/locale/ctype
   1022 Fix:	Build and install usr.bin/mklocale
   1023 
   1024 Symptom:undefined reference to `__assert13' or `__unsetenv13'
   1025 Fix:    Rebuild and install lib/libc
   1026 
   1027 Symptom:usr.bin/config fails to build.
   1028 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
   1029 
   1030 Symptom:undefined reference to `getprogname' or `setprogname'
   1031 Fix:    Rebuild and install lib/libc
   1032 
   1033 Symptom:lint does not understand the '-X' option
   1034 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
   1035 
   1036 Symptom:Update build fails in src/tools/gcc complaining that a variable
   1037 	(e.g. CPPFLAGS) has changed since the previous run.
   1038 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
   1039 
   1040 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
   1041 	No such file or directory.
   1042 Cause:	If a directory is created by mistake, then it is sometimes
   1043 	deleted from the CVS repository using administrative commands
   1044 	that bypass the normal cvs access controls.  If your cvs working tree
   1045 	contains references to a directory that has been deleted on the
   1046 	server in this way, then "cvs update" reports this error.
   1047 Fix:	Recursively delete the affected directory from your working tree
   1048 	and try the update again.
   1049