Home | History | Annotate | Line # | Download | only in src
UPDATING revision 1.303
      1 $NetBSD: UPDATING,v 1.303 2019/10/01 09:36:56 mrg Exp $
      2 
      3 This file (UPDATING) is intended to be a brief reference to recent
      4 changes that might cause problems in the build process, and a guide for
      5 what to do if something doesn't work.
      6 
      7 For a more detailed description of the recommended way to build NetBSD
      8 using build.sh, see the BUILDING file.
      9 
     10 Note that much of the advice in this UPDATING file was written before
     11 build.sh existed.  Nevertheless, the advice here may be useful for
     12 working around specific problems with build.sh.
     13 
     14 Sections are marked with "^^^^^".  After the section on "Recent changes"
     15 are several sections containing more general information.
     16 
     17 See also: BUILDING, build.sh, Makefile.
     18 
     19 Recent changes:
     20 ^^^^^^^^^^^^^^^
     21 
     22 20191001:
     23 
     24 	GCC 8.3 was imported.  Builds of src/tools/gcc may fail if
     25 	old builds with GCC 7 output now uses GCC 8.  Clean this
     26 	directory, and also clean src/external/gpl3/gcc.
     27 
     28 20190903:
     29 
     30 	File with names that coincide with existing files' names on
     31 	case-insensitive file systems were inadvertently committed, for
     32 	radeon GPU firmware.  We cannot mark these as obsolete for
     33 	postinstall to fix, so if you updated src since 2019-08-26, and
     34 	ran build.sh distribution or ran build.sh release, you must
     35 	manually delete the following files in your DESTDIR (which is
     36 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
     37 	them:
     38 
     39 		/libdata/firmware/radeon/bonaire_ce.bin
     40 		/libdata/firmware/radeon/bonaire_mc.bin
     41 		/libdata/firmware/radeon/bonaire_me.bin
     42 		/libdata/firmware/radeon/bonaire_mec.bin
     43 		/libdata/firmware/radeon/bonaire_pfp.bin
     44 		/libdata/firmware/radeon/bonaire_rlc.bin
     45 		/libdata/firmware/radeon/bonaire_sdma.bin
     46 		/libdata/firmware/radeon/bonaire_smc.bin
     47 		/libdata/firmware/radeon/bonaire_uvd.bin
     48 		/libdata/firmware/radeon/hainan_ce.bin
     49 		/libdata/firmware/radeon/hainan_mc.bin
     50 		/libdata/firmware/radeon/hainan_me.bin
     51 		/libdata/firmware/radeon/hainan_pfp.bin
     52 		/libdata/firmware/radeon/hainan_rlc.bin
     53 		/libdata/firmware/radeon/hainan_smc.bin
     54 		/libdata/firmware/radeon/hawaii_ce.bin
     55 		/libdata/firmware/radeon/hawaii_mc.bin
     56 		/libdata/firmware/radeon/hawaii_me.bin
     57 		/libdata/firmware/radeon/hawaii_mec.bin
     58 		/libdata/firmware/radeon/hawaii_pfp.bin
     59 		/libdata/firmware/radeon/hawaii_rlc.bin
     60 		/libdata/firmware/radeon/hawaii_sdma.bin
     61 		/libdata/firmware/radeon/hawaii_smc.bin
     62 		/libdata/firmware/radeon/kabini_ce.bin
     63 		/libdata/firmware/radeon/kabini_me.bin
     64 		/libdata/firmware/radeon/kabini_mec.bin
     65 		/libdata/firmware/radeon/kabini_pfp.bin
     66 		/libdata/firmware/radeon/kabini_rlc.bin
     67 		/libdata/firmware/radeon/kabini_sdma.bin
     68 		/libdata/firmware/radeon/kaveri_ce.bin
     69 		/libdata/firmware/radeon/kaveri_me.bin
     70 		/libdata/firmware/radeon/kaveri_mec.bin
     71 		/libdata/firmware/radeon/kaveri_mec2.bin
     72 		/libdata/firmware/radeon/kaveri_pfp.bin
     73 		/libdata/firmware/radeon/kaveri_rlc.bin
     74 		/libdata/firmware/radeon/kaveri_sdma.bin
     75 		/libdata/firmware/radeon/mullins_ce.bin
     76 		/libdata/firmware/radeon/mullins_me.bin
     77 		/libdata/firmware/radeon/mullins_mec.bin
     78 		/libdata/firmware/radeon/mullins_pfp.bin
     79 		/libdata/firmware/radeon/mullins_rlc.bin
     80 		/libdata/firmware/radeon/mullins_sdma.bin
     81 		/libdata/firmware/radeon/oland_ce.bin
     82 		/libdata/firmware/radeon/oland_mc.bin
     83 		/libdata/firmware/radeon/oland_me.bin
     84 		/libdata/firmware/radeon/oland_pfp.bin
     85 		/libdata/firmware/radeon/oland_rlc.bin
     86 		/libdata/firmware/radeon/oland_smc.bin
     87 		/libdata/firmware/radeon/pitcairn_ce.bin
     88 		/libdata/firmware/radeon/pitcairn_mc.bin
     89 		/libdata/firmware/radeon/pitcairn_me.bin
     90 		/libdata/firmware/radeon/pitcairn_pfp.bin
     91 		/libdata/firmware/radeon/pitcairn_rlc.bin
     92 		/libdata/firmware/radeon/pitcairn_smc.bin
     93 		/libdata/firmware/radeon/tahiti_ce.bin
     94 		/libdata/firmware/radeon/tahiti_mc.bin
     95 		/libdata/firmware/radeon/tahiti_me.bin
     96 		/libdata/firmware/radeon/tahiti_pfp.bin
     97 		/libdata/firmware/radeon/tahiti_rlc.bin
     98 		/libdata/firmware/radeon/tahiti_smc.bin
     99 		/libdata/firmware/radeon/verde_ce.bin
    100 		/libdata/firmware/radeon/verde_mc.bin
    101 		/libdata/firmware/radeon/verde_me.bin
    102 		/libdata/firmware/radeon/verde_pfp.bin
    103 		/libdata/firmware/radeon/verde_rlc.bin
    104 		/libdata/firmware/radeon/verde_smc.bin
    105 
    106 	We will re-import these radeon firmware images another way
    107 	later.
    108 
    109 20190727:
    110 	The uefi bootloader has gained tftp support and needs a clean
    111 	build. If you do update builds, manually clean its object
    112 	directory by something like:
    113 	cd sys/arch/i386/stand/efiboot && make clean
    114 
    115 20190723:
    116 	The jemalloc allocator in libc is now build without extended
    117 	debugging (for performance reasons). In update builds make sure
    118 	to rebuild it completly, by removing all affected object files,
    119 	including compat builds, something like:
    120 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    121 
    122 20190207:
    123 	GCC 7 switched for many ports.  Update builds are likely to fail.
    124 
    125 20180924:
    126 	A newer OpenSSL version has been imported. If you are doing
    127 	update builds, make sure to remove all old obj dirs, like:
    128 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    129 
    130 20180717:
    131 	On aarch64 int64_t and related types have changed from long long
    132 	to long. This requires recompiling all C++ binaries.
    133 
    134 20180713:
    135 	On amd64 and i386 static binaries are now build position
    136 	independend. This requires recompilation of all object
    137 	files used to create the crunched /rescue binary.
    138 	Clean the rescue directory in your obj directory before
    139 	doing an update build, otherwise linking will fail.
    140 
    141 20180414:
    142 	Existing binutils was migrated to binutils.old.  Manual
    143 	removal of tools/binutils objects directory may be required
    144 	to fix tools build failure.
    145 
    146 20180311:
    147 	bdftopcf was updated and may need cleaning in the
    148 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    149 	link errors.
    150 
    151 20180212:
    152 	between OpenSSL and GCC updates, many things may fail to build.
    153 	any failure that looks like GCC or openssl is best handled by
    154 	a clean destdir and objdir.  Full cleandir and destdir deletion
    155 	is recommended if build failures occur.
    156 
    157 20171225:
    158 	removal of the vadvise syscall requires manual removal of all
    159 	associated files from the libc build object directory (including
    160 	the .depend files) - a command like:
    161 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    162 	For architectures that support multiple "compat" binary targets,
    163 	you'll need to cleanup both the regular libc directory and the
    164 	compat ones (the above command will do that).
    165 
    166 20171010:
    167 	a change to the build structure of external/bsd/acpica/bin/iasl
    168 	means that its objdir (or *.d and .depend at least) might need
    169 	to be manually removed - or a build done once without -u.
    170 
    171 20170822:
    172 	a new version of GMP has been imported and probably
    173 	will break parts of builds related to themselves or GCC, both
    174 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    175 	and MPC objdirs or build once without -u.
    176 
    177 20170816:
    178 	a new version of MPFR and MPC have been imported and probably
    179 	will break parts of builds related to themselves or GCC, both
    180 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    181 	and MPC objdirs or build once without -u.
    182 
    183 20170402:
    184 	a new version of dhcpcd has been imported, which does not support
    185 	update builds from the previous version. Remove your
    186 	external/bsd/dhcpcd object dir or build once without -u.
    187 
    188 20170211:
    189 	a new terminfo database has been imported.
    190 	The structure of it has changed slightly from prior versions and
    191 	an updated tic tool is required.
    192 	If you build.sh, don't use -u
    193 
    194 20170207:
    195 	various arch dependent libc/exect.S files were removed
    196 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    197 	if it exists) or do a clean build.
    198 	(This is a bug in the make system, it should be corrected without
    199 	human intervention, but isn't.)
    200 
    201 20170104:
    202 	xinput build options have changed.
    203 	Remove the obj directory (external/mit/xorg/bin/xinput)
    204 	if you build.sh -u
    205 
    206 20170103:
    207 	a new version of flex has been imported.
    208 	Remove the file from obj (external/bsd/flex)
    209 	if you build.sh -u
    210 
    211 20161014:
    212 	a new version of OpenSSL has been imported.
    213 	Remove the files from obj (crypto/external/bsd/openssl) 
    214 	if you build.sh -u
    215 
    216 20161009:
    217 	a new version of dhcpcd has been imported with slightly changed
    218 	build infrastructure. When doing a build.sh -u this requires
    219 	pruning the external/bsd/dhcpcd objdir.
    220 
    221 20160914:
    222 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    223 	ports in using xorg-server 1.18. This requires a clean destdir
    224 	and a clean objdir.
    225 
    226 20160527:
    227 	i386 needs a full cleandir or objdir deletion because PIE has
    228 	been enabled. (see the amd64 entry two down for further info)
    229 
    230 20160418:
    231 	libedit needs manual removal of all autogenerated files since
    232 	some of them are not autogenerated anymore. Remember that there
    233 	might be two copies of libedit if your platform builds "compat".
    234 
    235 20160410:
    236 	amd64 needs full "make cleandir" or deletion of objdir now that
    237 	PIE has been enabled for amd64.  PIE, or position-independent
    238 	executables, means all code, including executables and not just
    239 	shared libraries, is position-independent and hence able to be
    240 	relocated by ASLR, address space layout randomization.
    241 
    242 	The change was made in Makefile variables for compiler and
    243 	linker flags, for which make(1) does not record dependencies,
    244 	hence it is unable to detect that all .o files need rebuilding.
    245 
    246 	Partial rebuilds with some modified source files will likely
    247 	fail when linking executables, since the linker refuses to mix
    248 	position-independent code with position-dependent code in
    249 	position-independent executables:
    250 
    251 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    252 
    253 20160401:
    254 	Ports switching to GCC 5.3 will need a full "make cleandir".
    255 	Some people have found that cleandir is not sufficient, so if
    256 	in doubt delete the entire object directory tree for gcc.
    257 
    258 20160306:
    259 	NetBSD's regexp implementation is now part of libnbcompat.
    260 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    261 	non-NetBSD hosts if linked with stale object files produced
    262 	while they included a non-NetBSD regex.h.
    263 	In any case, you should "make cleandir" at least these tools
    264 	before updating your toolchain.
    265 
    266 20160125:
    267 	Dtrace has been enabled by default on some architectures.
    268 	When doing an update build, make sure to clean the etc/mtree
    269 	object directory before starting the build - otherwise the
    270 	needed directories in destdir will not be created.
    271 	An easy way to do this is:
    272 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    273 
    274 20150818:
    275 	New acpica requires "make cleandir" in src/external/bsd/acpica
    276 	again.
    277 
    278 20150413:
    279 	New acpica requires "make cleandir" and reinstalling yacc
    280 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    281 	also "make cleandir" in /usr/src/external/bsd/acpica.
    282 
    283 20150404:
    284 	Lint changes require a full rebuild of the tool, so make
    285 	sure to build without -u option to build.sh, or manually
    286 	do a make cleandir in src/tools/lint1 and
    287 	src/usr.bin/xlint.
    288 
    289 20150310:
    290 	Improvements to openssl for arm mean that update builds of
    291 	the openssl libraries will fail. A make cleandir in
    292 	external/bsd/openssl/lib is needed
    293 
    294 20141026:
    295 	A mishap during the import of pppd may cause your corruption
    296 	in your cvs directory if you happened to do a cvs update
    297 	during a short period of time. To fix, just remove the
    298 	directory src/external/bsd/ppp/dist/pppd completely
    299 	and let cvs restore it on next update.
    300 
    301 20140721:
    302 	The src/external/mit/lua/src directory was accidentally created
    303 	and then deleted in the CVS repository.  If you get errors like
    304 
    305 	cvs [update aborted]: cannot open directory
    306 	/cvsroot/src/external/mit/lua/src: No such file or directory
    307 
    308 	then delete your local copy of that directory tree and try again.
    309 
    310 20140530:
    311 	ARM eABI switched to DWARF based exception handling. This requires
    312 	rebuilding all C++ code. It is strongly advised to do a clean build.
    313 
    314 20140131:
    315 	The new compiler_rt/libc integration moved a few things. It is strongly
    316 	advised to do a clean build. At least lib/libc, the compat version(s)
    317 	of libc, libkern, rump and the kernels need to be cleaned.
    318 
    319 20131227:
    320 	1. The new ntpd runs in a restricted mode to prevent amplification
    321 	   attacks. If you need ntpdc to work you need to explicitly enable
    322 	   mode7 in your config file. Make sure you put the necessary restrict
    323 	   statements to avoid being exposed.
    324 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    325 	   to make clean in libc
    326 
    327 20131129:
    328 	The GMP sources were updated, and builds will likely fail without
    329 	cleaning their build trees for both tools and in-tree, like below.
    330 
    331 20131128:
    332 	The MPC and MPFR sources were updated, and builds may require their
    333 	tools and in-tree directories cleaned for successful updates.
    334 
    335 20130605:
    336 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    337 	to IPSEC (and the older IPSEC version removed).
    338 
    339 20130605:
    340 	Previous freetype installations eroneously installed private
    341 	header files. If you are building against a non-empty $DESTDIR,
    342 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    343 
    344 20130531:
    345 	The xdm update may cause build failure due to xdm.man being
    346 	in the obj tree.  Make sure to ensure any like this:
    347 		nbmake: nbmake: don't know how to make xdm.man. Stop
    348 	is fixed by deleting the xdm.man in the obj tree.
    349 
    350 20130530:
    351 	Updates of many xsrc packages will leave old .pc files around.
    352 	Best to clean out the xsrc objdir entirely before rebuilds.
    353 
    354 20130301:
    355 	The removal of netiso requires manual removal of /usr/include/netiso
    356 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    357 
    358 20120726:
    359 	The update of OpenSSL requires cleaning both the OpenSSL build
    360 	directory and DESTDIR.  *Even non-update builds require cleaning
    361 	DESTDIR.* Builds done without taking these steps may fail, or in
    362 	some cases may succeed and install broken OpenSSL libraries that
    363 	cause third-party software to link incorrectly and/or crash.
    364 
    365 20120507:
    366 	The database schema for makemandb was changed.  You will
    367 	need to update the database using 'makemandb -f' or wait
    368 	for the next weekly run to fix it.
    369 
    370 20120319:
    371 	sys/conf/Makefile.kern.inc has been modified to adjust the
    372 	size of db_symtab automatically.  You need to update dbsym in
    373 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    374 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    375 	mk.conf.
    376 
    377 20120216:
    378 	Default for MKCATPAGES changed to NO.  Update builds will fail
    379 	unless DESTDIR is cleaned manually.  If you built between 20120207
    380 	and 20120216, daily and weekly could have created an unreadable
    381 	/var/db/man.db index for apropos.  Running makemandb -f or
    382 	the next run of weekly will fix it.
    383 
    384 20111227:
    385 	If you built between 20111225 and 20111227 you need to remove
    386 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    387 	bump has been reverted.
    388 
    389 20111125:
    390 	The "rnd" pseudodevice has been added to sys/conf/std, which
    391 	means it should no longer be explicitly listed in kernel
    392 	configuration files.  The line "pseudo-device rnd" should be
    393 	removed from any custom kernel config files users may have.
    394 
    395 20111119:
    396 	A problem with the datastructures used by the rndctl(8)
    397 	utility (pointers in datastructures in an array, making 32->64
    398 	bit compatibility very painful) has been fixed in a
    399 	non-backwards-compatible way.  If you replace your kernel,
    400 	replace your rndctl executable too.
    401 
    402 20111001:
    403 	the prop_*_send_syscall() functions from proplib(3) have been
    404 	changed and their new version is not backward compatible with the old
    405 	one.  So ensure that all consumers of these functions (currently:
    406 	quota2 code and its tests) are updated together with the new lib.
    407 
    408 20110817:
    409 	sparc has been changed to use GCC 4.5.3, so any objdir or
    410 	DESTDIR for them should be deleted before updating.
    411 
    412 20110806:
    413 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    414 	objdir or DESTDIR for them should be deleted before updating.
    415 
    416 20110805:
    417 	The update to GCC 4.5.3 requires a non-trivial portion of
    418 	the tree to be cleaned.  Best to delete both objdir and
    419 	DESTDIR before running this update.  So far, only the
    420 	sparc64, mips and powerpc platforms have changed.
    421 
    422 20110803:
    423 	The layout of external/public-domain/xz has changed.  To do an
    424 	update build you will have to remove the contents of the OBJDIR
    425 	for external/public-domain/xz/bin by hand as the xz entry there
    426 	is now a directory.
    427 
    428 20110410:
    429 	The configuration of src/tools/gcc has changed.  To do an
    430 	update build you have to clean both tools/binutils and
    431 	tools/gcc by hand.
    432 
    433 20110328:
    434 	Building the Xorg binary was moved into a subdirectory to fix
    435 	ordering issues with "make all".  It may be necessary to remove
    436 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    437 	if your update build fails, as the "Xorg" entry there is now a
    438 	directory.
    439 
    440 20110121:
    441 	Assembler files no longer use -traditional-cpp.  This can break
    442 	the build of individual parts of the tree.  This is handled
    443 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    444 	and re-run config(1) for any kernel configurations as needed.
    445 
    446 20101217:
    447 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    448 	by default.  It may be necessary to manually update passwd(5) and
    449 	group(5) in order to make the program work with existing setups.
    450 
    451 20101125:
    452 	The latest changes to setenv(3) dissallow setting environment
    453 	variables with names that contain '='.  Revision 1.18 of env.c
    454 	assumed that this was allowed.  Installing a new libc with an
    455 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    456 	break which affects the autoconf tests for dependency finding,
    457 	so building gcc will end up printing:
    458 	    checking dependency style of gcc... none
    459 	    configure: error: no usable dependency style found
    460 	Fix it by rebuilding and re-installing env.
    461 
    462 20101119:
    463 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    464 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    465 	have any build problems with xsrc, or problems with mismatched
    466 	versions between xorg-server and drivers.
    467 
    468 20100604:
    469 	The update of ATF to 0.9 causes old tests written in shell to fail
    470 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    471 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    472 	trees by hand.
    473 
    474 20100522:
    475 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    476 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    477 	build problems with xsrc.
    478 
    479 20100522:
    480 	private section of <ctype.h> was splitted, and now mklocale(1)
    481 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    482 
    483 20100520:
    484 	The location of the xkb compiled descriptions has changed.  Please
    485 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    486 
    487 20100222:
    488 	The shared objects file extension has been changed from .so to
    489 	.pico, in order to avoid conflicts with shared libraries names
    490 	libXX.so.  All now stale regular .so files can be removed from
    491 	your object directories.
    492 
    493 20100204:
    494 	The termcap database has been removed from the sources,
    495 	but has not been marked obsolete so it is not removed
    496 	from the system when upgrading.
    497 	As such, you will need to remove them from your object
    498 	and destination directories.
    499 
    500 20091101:
    501         After updating, it may be necessary to make the 'cleandir'
    502         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    503         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    504         src/tools/lex/ and src/usr.bin/lex/.
    505 
    506 20091001:
    507 	On amd64 you must rebuild tools (to get the new binutils)
    508 	before building a kernel, or the build fails on cpufunc.S.
    509 
    510 20091001:
    511 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    512 	symlink, failing the build.  Delete the link, and the subdir
    513 	it is in, and retry your build.
    514 
    515 20090718:
    516 	libc build changed so that strchr() provides the extra entry
    517 	point for index().  Update build of libc.a (and libc_pic.a)
    518 	may fail because the archive contains the unwanted index.o.
    519 	(Similarly for strrchr() and rindex().)
    520 
    521 20090709:
    522 	Native Xorg was upgraded again.  Builds will probably fail again
    523 	without a clean objdir, at least for src/external/mit/xorg.
    524 
    525 20090616:
    526 	Native Xorg was upgraded.  Builds will need a clean objdir for
    527 	src/external/mit/xorg.  Upgrading a system from sets will not
    528 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    529 	subdirectory has been changed into a file, and this needs to
    530 	be manually "rm -r"'ed before installing xbase.tgz.
    531 
    532 20090501:
    533 	Several new functions were added to string.h/libc, and this
    534 	can cause autoconf problems during the tool build for people
    535 	who fail to clean out their tools objects properly.  If you
    536 	note messages about stpcpy, stpncpy or strnlen accompanying a
    537 	failure during the tool build, clean out all your tools
    538 	objects and start again.
    539 
    540 20090325:
    541 	The i386 port was switched to i486 default toolchain.  This requires
    542 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    543 
    544 20090126:
    545 	The __posix_fadvise50 system call changed assembly stub type.  You
    546 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    547 	to avoid using the old assembly stub.
    548 
    549 20090202:
    550 	pkg_install now depends on the pkgdb cache for automatic conflict
    551 	detection.  It is recommented to rebuild the cache with
    552 	``pkg_admin rebuild''.
    553 
    554 20090110:
    555 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    556 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    557 	   This is needed even in the MODULAR kernel because there is
    558 	   conditionally compiled code in rtsock.c.
    559 	2. make sure build.sh completes and the binaries in a chroot work
    560 	   before installing.
    561 	3. If you don't use build.sh and you build directly to root, and
    562 	   your build breaks in the middle, don't despair.  Make sure headers
    563 	   are installed properly, and start building libraries first libc
    564 	   and libutil, install them and then continue building all the
    565 	   libraries in src/lib and src/gnu/lib and install them.  Once
    566 	   the new libraries are installed, you can restart the build.
    567 	4. If you compile packages and you notice link time warnings,
    568 	   rebuild the required packages to update their shared libraries.
    569 	   Any package you rebuild will require rebuilding all the packages
    570 	   that depend on it.
    571 	5. Next time you run pwd_mkdb with the new binary, the file
    572 	   will be upgraded and it will not be backwards compatible.
    573 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    574 	   lastlogx(5)) have been versioned, and there is a heuristic
    575 	   for utmp.  You are better off removing the old files after
    576 	   upgrading.  The automated clearing of /var/run during
    577 	   boot, and the automated rotating of files in /var/log by
    578 	   newsyslog(8), may mean that you do not have to remove the
    579 	   files manually.
    580 	7. The optional accounting file (/var/account/acct, see
    581 	   accton(8)) has not been versioned, and will need to be
    582 	   removed.  The automatic rotation of the accounting file by
    583 	   /etc/daily limits the bad consequences of failure to remove
    584 	   the file.
    585 	8. Application software that writes time_t to binary files on
    586 	   disk will break or need attention.  Most notably: if you are
    587 	   using PostgreSQL < 8.4, you need to dump your databases,
    588 	   rebuild PostgreSQL with the new time_t, then restore.
    589 
    590 20081219:
    591 	config(1) has been updated, and one of the files it creates -
    592 	swapnetbsd.o - has changed format.  You need to rebuild config
    593 	(done automatically by build.sh) and then you need to rerun
    594 	config on all kernel configuration files before rebuilding those
    595 	kernels.
    596 
    597 20081205:
    598 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    599 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    600 	set and will appear as extra files for MKX11=no update builds.
    601 
    602 20081122:
    603 	On i386, various kernel options(4) in GENERIC including
    604 	file systems have been disabled and moved into kernel modules.
    605 	Before trying a new GENERIC kernel, you have to prepare the
    606 	following files as well as a new GENERIC kernel:
    607 
    608 	- build and install kernel modules from src/sys/modules
    609 
    610 	- install the latest bootloader, which will load a module
    611 	  for the file system from which the kernel is loaded automatically
    612 
    613 	If you have to load your kernel from a file system which is not of
    614 	the same type as the root file system, you have to load the necessary
    615 	file system module manually on the boot prompt or in the boot.cfg file.
    616 
    617 20080827:
    618 	If you built and installed a libc from sources between
    619 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    620 	which results in false errors reported by lint(1).
    621 	Since this breaks the libc build itself, manual help is
    622 	needed -- lint must be disabled temporarily, e.g.:
    623 	  $ (cd lib/libc && make MKLINT=no dependall install)
    624 
    625 20080813:
    626 	MKDEBUG build was broken because the .depend files did not know
    627 	about .go files.  You need to remove all .depend files and rebuild.
    628 
    629 20080802:
    630 	A regression in binary compatibility for pthread_mutex_t has
    631 	been fixed.  Unfortunately, the price is breaking compatibility
    632 	for -current.
    633 
    634 	Threaded programs (using libpthread) and C++ programs (using
    635 	libstdc++) compiled after 20070907 and before 20080802 need to
    636 	be recompiled.
    637 
    638 	One way to find affected pkgsrc packages:
    639 
    640 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    641 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    642 
    643 20080731:
    644 	WAPBL (metadata journaling support) has been added, but at this
    645 	time isn't backwards compatible with pre-WAPBL aware kernels
    646 	and userland (fsck_ffs in particular).  Please make sure you
    647 	don't use a journaled filesystem with an older kernel/userland,
    648 	especially an uncleanly mounted journaled filesystem.  WAPBL
    649 	also requires the super block to be in the UFS2 format.  You
    650 	can use fsck_ffs -c 4 to update the superblock format.
    651 
    652 20080721:
    653 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    654 	isn't defined.
    655 
    656 20080531:
    657 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    658 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    659 	utility needs to be rebuilt and reinstalled as older binaries
    660 	won't work correctly.  The following sequence of commands:
    661 
    662 	  $ (cd sys/sys/ && nbmake-$arch includes)
    663 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    664 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    665 
    666 	leaves new drvctl utility in sbin/drvctl build directory.
    667 
    668 20080503:
    669 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    670 
    671 20080521:
    672 	For a while, unprivileged UPDATE builds would fail to
    673 	succeed at the checkflist stage, complaining that
    674 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    675 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    676 	If you already hit this problem, update the .mk file,
    677 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    678 
    679 20080303:
    680 	Linker warnings are now fatal if $WARNS>0.
    681 
    682 20080126:
    683 	The posix_fadvise system call has been changed from an assembly
    684 	stub, to a c file that calls an assembly stub.  You need to
    685 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    686 	avoid using the old assembly stub.
    687 
    688 20071209:
    689 	The acpiec(4) driver has been split into two attachments.  If you
    690 	get ACPI errors before the attachment, please update your kernel
    691 	configuration file appropriately or see GENERIC for more details.
    692 
    693 20071115:
    694 	The it(4) driver has been renamed to itesio(4) and the old port
    695 	argument specified in the kernel configuration file is not valid
    696 	anymore.  The itesio(4) driver now uses the Super I/O address port
    697 	rather than the EC address port.  Please update your kernel
    698 	configuration file appropriately or see GENERIC for more details.
    699 
    700 20071028:
    701 	The pccons(4) driver has been removed from the NetBSD/shark port.
    702 	You need to update any custom kernel configuration file you have
    703 	to remove any references to pccons (which includes removing the
    704 	now useless XSERVER option) and replace them with the correct
    705 	entries for the wscons driver.  See the GENERIC configuration file
    706 	for more details.
    707 
    708 20070913:
    709 	A latent bug in dhclient/dhcpd that caused it to be unable to
    710 	enumerate interfaces was fixed.  The bug began to cause
    711 	problems after 20070911 when the kernel's SIOCGIFCONF
    712 	implementation was repaired.  From 20070529 to 20070911 racoon
    713 	could not enumerate interfaces.  (These are noted because
    714 	normal kernel/userspace version matching hygiene is not
    715 	sufficient to avoid this problem.)  Ensure that both kernel
    716 	and userland are from after 20070913.
    717 
    718 20070703:
    719 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    720 	calls the target-specific strip program, and the logic to pass
    721 	down STRIP from make has been removed.  This requires a
    722 	re-installation of tools.
    723 
    724 20070422:
    725 	The way OS emulations lookup filenames inside the emulation root
    726 	has been changed.  Rather than modify the pathname (and copy back
    727 	to userspace) namei() and lookup() directly check the emulation
    728 	root.  One side effect is that absolute symlinks inside the emulated
    729 	root file system will be relative to that file system - unless they
    730 	start /../ this is useful when the emulated root is a real install
    731 	that has such links.
    732 	This might affect symlinks that have been added to reference outside
    733 	the emulated root.
    734 
    735 20070412:
    736 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    737 	instead.  See the GENERIC32_IP3x kernel configuration for an
    738 	example.
    739 
    740 20070319:
    741         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    742         on many platforms due to incorrect flags settings.  If you
    743         updated and built after about 20070315, do "nbmake-$arch
    744 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    745 	rebuild of object files that might have been built
    746 	incorrectly, and ensure that you have at least
    747 	src/lib/libc/Makefile 1.130.
    748 
    749 20070210:
    750         src/sys/sys/{sa.h,savar.h} were removed.
    751           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    752               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    753         will allow dependencies on those files to get get rebuilt
    754 
    755 20070209:
    756         The threading model was changed when the newlock2 branch
    757         was merged to NetBSD-current.  If you boot with a new
    758         kernel (version 4.99.10), then you also need a new pthread
    759         library (/usr/lib/libpthread.so.0.7).  If you boot with
    760         an old kernel, then you need the old pthread library
    761         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    762         the pthread library in sync, old threaded applications should
    763         continue to work with an old or new kernel.  Note that named(8)
    764 	is the only threaded application in the base system.
    765 
    766 20061214:
    767 	Following the move of string_to_flags() and flags_to_string()
    768 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    769 	will need to do a "make cleandir" in
    770 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    771 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    772 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    773 		as the installation images in distrib/
    774 	in order to excise stale references to the old stat_flags.h header
    775 	file in the ls sources -- stat_flags.h has been removed.
    776 
    777 20061108:
    778 	The configure script used in the src/tools/gcc compiler has been
    779 	changed to indicate that our libc has ssp support built-in and
    780 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    781 	make clean in src/tools/gcc first to rebuild the compiler.
    782 
    783 20061009:
    784 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    785 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    786 
    787 20060814:
    788 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    789 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    790 	kernel configuration for an example.  X servers from the last
    791 	few years should cope.
    792 
    793 20060703:
    794 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    795 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    796 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    797 
    798 20060627:
    799 	socket(2) has changed, and its system call has been versioned.
    800 	For userlands with the old version of socket(2), make sure that
    801 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    802 	errors will result.
    803 
    804 Hints for a more successful build:
    805 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    806     Use build.sh, but do not use its "expert mode":
    807 	This will automatically build the tools in the
    808 	   correct order, and it will keep the tools and the
    809 	   new build products from interfering with the running
    810 	   system.  This will allow you to ignore most of the
    811 	   other advice in this file.
    812     Build a new kernel first:
    813 	This makes sure that any new system calls or features
    814 	   expected by the new userland will be present.  This
    815 	   helps to avoid critical errors when upgrading.
    816     Use object directories:
    817 	This helps to keep stale object
    818 	   files from polluting the build if a Makefile "forgets"
    819 	   about one.  It also makes it easier to clean up after
    820 	   a build.  It's also necessary if you want to use the
    821 	   same source tree for multiple machines.
    822 	   To use object directories with build.sh:
    823 	    a) invoke build.sh with the "-M" or "-O" options.
    824 	   To use object directories without using build.sh:
    825 	    a) cd /usr/src ; make cleandir
    826 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    827 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    828 	    d) cd /usr/src ; make build
    829 	   Note that running "make obj" in a directory will create
    830 	   in obj.$MACHINE directory.
    831     Build to a DESTDIR:
    832 	This helps to keep old installed files (especially libraries)
    833 	   from interfering with the new build.
    834 	   To build to a DESTDIR with build.sh, use the "-D" option.
    835 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    836 	   environment variable before running make build.  It should be
    837 	   set to the pathname of an initially empty directory.
    838 	   Problems: if you do not use build.sh, you might need to
    839 		update critical utilities without using DESTDIR since
    840 		nothing is executed from what is installed in DESTDIR.
    841 		(See critical utils, below.)
    842     Build often:
    843 	This keeps critical utilities current enough to not choke
    844 	on any other part of the source tree that depends on up to
    845 	date functionality.  If you use build.sh, you should not have
    846 	this problem.
    847 
    848 What to do if things don't work:
    849 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    850 When things don't work there are usually a few things that commonly
    851 should be done.
    852     1)	make includes
    853 	This should be done automatically by make build.
    854     2)  cd share/mk && make install
    855 	Again, automatically done by make build.
    856 
    857 Failsafe rebuild of a small part of the tree:
    858 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    859 To make sure you rebuild something correctly you want to do
    860 something like the following:
    861     1)  Make sure the includes and .mk files are up to date.
    862     2)  Make sure any program used to build the particular
    863 	utility is up to date.  (yacc, lex, etc...)
    864     3)  cd ...path/to/util...
    865 	make cleandir
    866 	rm ...all obj directories...
    867 	make cleandir			# yes, again
    868 	make obj
    869 	make depend && make
    870 
    871 Failsafe rebuild of the entire tree:
    872 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    873 If you really want to make sure the source tree is clean and
    874 ready for a build try the following.  Note that sourcing /etc/mk.conf
    875 (a make(1) Makefile) in this manner is not right, and will not work
    876 for anyone who uses any make(1) features in /etc/mk.conf.
    877 
    878 ---cut here---
    879 #!/bin/sh
    880 . /etc/mk.conf
    881 
    882 if [ -z $NETBSDSRCDIR ] ; then
    883     NETBSDSRCDIR=/usr/src
    884 fi
    885 if [ \! -d $NETBSDSRCDIR ] ; then
    886     echo Unable to find sources
    887     exit 1
    888 fi
    889 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    890 
    891 if [ -z $BSDOBJDIR ] ; then
    892     BSDOBJDIR=/usr/obj
    893 fi
    894 if [ -d $BSDOBJDIR ] ; then
    895     rm -rf $BSDOBJDIR
    896 fi
    897 
    898 cd $NETBSDSRCDIR && make cleandir
    899 
    900 ---cut here---
    901 
    902 Critical utilities:
    903 ^^^^^^^^^^^^^^^^^^^
    904 	usr.bin/compile_et
    905 	usr.bin/make
    906 	usr.bin/yacc
    907 	usr.bin/lex
    908 	usr.bin/xlint
    909 	usr.bin/config
    910 
    911 Other problems and possible solutions:
    912 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    913 Symptom:Complaints involving a Makefile.
    914 Fix:	Rebuild usr.bin/make:
    915 	cd usr.bin/make && make && make install
    916 	Or, a failsafe method if that doesn't work:
    917 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    918 
    919 Fix:	Make sure .mk files are up to date.
    920 	cd share/mk && make install
    921 
    922 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    923 Fix:	Rebuild usr.bin/config
    924 
    925 Symptom:
    926 Fix:	Rebuild usr.bin/yacc
    927 
    928 Symptom:
    929 Fix:	Rebuild usr.bin/lex
    930 
    931 Symptom:
    932 Fix:	rm /usr/lib/libbfd.a
    933 
    934 Symptom:Obsolete intermediate files are used during compilation
    935 Fix:	Try the following sequence of commands in the directory in question.
    936 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    937 	(If you built the tree without "make obj" in the past, obsolete files
    938 	may remain.  The command tries to clean everything up)
    939 
    940 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
    941 	pointer type
    942 Fix:	Rebuild and install usr.bin/menuc
    943 
    944 Symptom:mklocale not found during build in share/locale/ctype
    945 Fix:	Build and install usr.bin/mklocale
    946 
    947 Symptom:undefined reference to `__assert13' or `__unsetenv13'
    948 Fix:    Rebuild and install lib/libc
    949 
    950 Symptom:usr.bin/config fails to build.
    951 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
    952 
    953 Symptom:undefined reference to `getprogname' or `setprogname'
    954 Fix:    Rebuild and install lib/libc
    955 
    956 Symptom:lint does not understand the '-X' option
    957 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
    958 
    959 Symptom:Update build fails in src/tools/gcc complaining that a variable
    960 	(e.g. CPPFLAGS) has changed since the previous run.
    961 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
    962 
    963 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
    964 	No such file or directory.
    965 Cause:	If a directory is created by mistake, then it is sometimes
    966 	deleted from the CVS repository using administrative commands
    967 	that bypass the normal cvs access controls.  If your cvs working tree
    968 	contains references to a directory that has been deleted on the
    969 	server in this way, then "cvs update" reports this error.
    970 Fix:	Recursively delete the affected directory from your working tree
    971 	and try the update again.
    972