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UPDATING revision 1.302
      1 $NetBSD: UPDATING,v 1.302 2019/09/03 15:38:52 riastradh 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 20190903:
     23 
     24 	File with names that coincide with existing files' names on
     25 	case-insensitive file systems were inadvertently committed, for
     26 	radeon GPU firmware.  We cannot mark these as obsolete for
     27 	postinstall to fix, so if you updated src since 2019-08-26, and
     28 	ran build.sh distribution or ran build.sh release, you must
     29 	manually delete the following files in your DESTDIR (which is
     30 	usually $OBJDIR/destir.$ARCH), or from / if you have installed
     31 	them:
     32 
     33 		/libdata/firmware/radeon/bonaire_ce.bin
     34 		/libdata/firmware/radeon/bonaire_mc.bin
     35 		/libdata/firmware/radeon/bonaire_me.bin
     36 		/libdata/firmware/radeon/bonaire_mec.bin
     37 		/libdata/firmware/radeon/bonaire_pfp.bin
     38 		/libdata/firmware/radeon/bonaire_rlc.bin
     39 		/libdata/firmware/radeon/bonaire_sdma.bin
     40 		/libdata/firmware/radeon/bonaire_smc.bin
     41 		/libdata/firmware/radeon/bonaire_uvd.bin
     42 		/libdata/firmware/radeon/hainan_ce.bin
     43 		/libdata/firmware/radeon/hainan_mc.bin
     44 		/libdata/firmware/radeon/hainan_me.bin
     45 		/libdata/firmware/radeon/hainan_pfp.bin
     46 		/libdata/firmware/radeon/hainan_rlc.bin
     47 		/libdata/firmware/radeon/hainan_smc.bin
     48 		/libdata/firmware/radeon/hawaii_ce.bin
     49 		/libdata/firmware/radeon/hawaii_mc.bin
     50 		/libdata/firmware/radeon/hawaii_me.bin
     51 		/libdata/firmware/radeon/hawaii_mec.bin
     52 		/libdata/firmware/radeon/hawaii_pfp.bin
     53 		/libdata/firmware/radeon/hawaii_rlc.bin
     54 		/libdata/firmware/radeon/hawaii_sdma.bin
     55 		/libdata/firmware/radeon/hawaii_smc.bin
     56 		/libdata/firmware/radeon/kabini_ce.bin
     57 		/libdata/firmware/radeon/kabini_me.bin
     58 		/libdata/firmware/radeon/kabini_mec.bin
     59 		/libdata/firmware/radeon/kabini_pfp.bin
     60 		/libdata/firmware/radeon/kabini_rlc.bin
     61 		/libdata/firmware/radeon/kabini_sdma.bin
     62 		/libdata/firmware/radeon/kaveri_ce.bin
     63 		/libdata/firmware/radeon/kaveri_me.bin
     64 		/libdata/firmware/radeon/kaveri_mec.bin
     65 		/libdata/firmware/radeon/kaveri_mec2.bin
     66 		/libdata/firmware/radeon/kaveri_pfp.bin
     67 		/libdata/firmware/radeon/kaveri_rlc.bin
     68 		/libdata/firmware/radeon/kaveri_sdma.bin
     69 		/libdata/firmware/radeon/mullins_ce.bin
     70 		/libdata/firmware/radeon/mullins_me.bin
     71 		/libdata/firmware/radeon/mullins_mec.bin
     72 		/libdata/firmware/radeon/mullins_pfp.bin
     73 		/libdata/firmware/radeon/mullins_rlc.bin
     74 		/libdata/firmware/radeon/mullins_sdma.bin
     75 		/libdata/firmware/radeon/oland_ce.bin
     76 		/libdata/firmware/radeon/oland_mc.bin
     77 		/libdata/firmware/radeon/oland_me.bin
     78 		/libdata/firmware/radeon/oland_pfp.bin
     79 		/libdata/firmware/radeon/oland_rlc.bin
     80 		/libdata/firmware/radeon/oland_smc.bin
     81 		/libdata/firmware/radeon/pitcairn_ce.bin
     82 		/libdata/firmware/radeon/pitcairn_mc.bin
     83 		/libdata/firmware/radeon/pitcairn_me.bin
     84 		/libdata/firmware/radeon/pitcairn_pfp.bin
     85 		/libdata/firmware/radeon/pitcairn_rlc.bin
     86 		/libdata/firmware/radeon/pitcairn_smc.bin
     87 		/libdata/firmware/radeon/tahiti_ce.bin
     88 		/libdata/firmware/radeon/tahiti_mc.bin
     89 		/libdata/firmware/radeon/tahiti_me.bin
     90 		/libdata/firmware/radeon/tahiti_pfp.bin
     91 		/libdata/firmware/radeon/tahiti_rlc.bin
     92 		/libdata/firmware/radeon/tahiti_smc.bin
     93 		/libdata/firmware/radeon/verde_ce.bin
     94 		/libdata/firmware/radeon/verde_mc.bin
     95 		/libdata/firmware/radeon/verde_me.bin
     96 		/libdata/firmware/radeon/verde_pfp.bin
     97 		/libdata/firmware/radeon/verde_rlc.bin
     98 		/libdata/firmware/radeon/verde_smc.bin
     99 
    100 	We will re-import these radeon firmware images another way
    101 	later.
    102 
    103 20190727:
    104 	The uefi bootloader has gained tftp support and needs a clean
    105 	build. If you do update builds, manually clean its object
    106 	directory by something like:
    107 	cd sys/arch/i386/stand/efiboot && make clean
    108 
    109 20190723:
    110 	The jemalloc allocator in libc is now build without extended
    111 	debugging (for performance reasons). In update builds make sure
    112 	to rebuild it completly, by removing all affected object files,
    113 	including compat builds, something like:
    114 	cd /usr/obj && find . -type d -name jemalloc|xargs rm -rf
    115 
    116 20190207:
    117 	GCC 7 switched for many ports.  Update builds are likely to fail.
    118 
    119 20180924:
    120 	A newer OpenSSL version has been imported. If you are doing
    121 	update builds, make sure to remove all old obj dirs, like:
    122 	cd /usr/obj && find . -type d -name openssl | xargs rm -rf
    123 
    124 20180717:
    125 	On aarch64 int64_t and related types have changed from long long
    126 	to long. This requires recompiling all C++ binaries.
    127 
    128 20180713:
    129 	On amd64 and i386 static binaries are now build position
    130 	independend. This requires recompilation of all object
    131 	files used to create the crunched /rescue binary.
    132 	Clean the rescue directory in your obj directory before
    133 	doing an update build, otherwise linking will fail.
    134 
    135 20180414:
    136 	Existing binutils was migrated to binutils.old.  Manual
    137 	removal of tools/binutils objects directory may be required
    138 	to fix tools build failure.
    139 
    140 20180311:
    141 	bdftopcf was updated and may need cleaning in the
    142 	src/external/mit/xorg/tools/bdftopcf subdirectory if there are
    143 	link errors.
    144 
    145 20180212:
    146 	between OpenSSL and GCC updates, many things may fail to build.
    147 	any failure that looks like GCC or openssl is best handled by
    148 	a clean destdir and objdir.  Full cleandir and destdir deletion
    149 	is recommended if build failures occur.
    150 
    151 20171225:
    152 	removal of the vadvise syscall requires manual removal of all
    153 	associated files from the libc build object directory (including
    154 	the .depend files) - a command like:
    155 		cd $OBJ && find . -type d -name libc | xargs rm -rf
    156 	For architectures that support multiple "compat" binary targets,
    157 	you'll need to cleanup both the regular libc directory and the
    158 	compat ones (the above command will do that).
    159 
    160 20171010:
    161 	a change to the build structure of external/bsd/acpica/bin/iasl
    162 	means that its objdir (or *.d and .depend at least) might need
    163 	to be manually removed - or a build done once without -u.
    164 
    165 20170822:
    166 	a new version of GMP has been imported and probably
    167 	will break parts of builds related to themselves or GCC, both
    168 	in the tools and the native section.  Remove all GCC, GMP, MPFR
    169 	and MPC objdirs or build once without -u.
    170 
    171 20170816:
    172 	a new version of MPFR and MPC have 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 20170402:
    178 	a new version of dhcpcd has been imported, which does not support
    179 	update builds from the previous version. Remove your
    180 	external/bsd/dhcpcd object dir or build once without -u.
    181 
    182 20170211:
    183 	a new terminfo database has been imported.
    184 	The structure of it has changed slightly from prior versions and
    185 	an updated tic tool is required.
    186 	If you build.sh, don't use -u
    187 
    188 20170207:
    189 	various arch dependent libc/exect.S files were removed
    190 	Either remove the obj directories (lib/libc and compat/amd64/i386/lib
    191 	if it exists) or do a clean build.
    192 	(This is a bug in the make system, it should be corrected without
    193 	human intervention, but isn't.)
    194 
    195 20170104:
    196 	xinput build options have changed.
    197 	Remove the obj directory (external/mit/xorg/bin/xinput)
    198 	if you build.sh -u
    199 
    200 20170103:
    201 	a new version of flex has been imported.
    202 	Remove the file from obj (external/bsd/flex)
    203 	if you build.sh -u
    204 
    205 20161014:
    206 	a new version of OpenSSL has been imported.
    207 	Remove the files from obj (crypto/external/bsd/openssl) 
    208 	if you build.sh -u
    209 
    210 20161009:
    211 	a new version of dhcpcd has been imported with slightly changed
    212 	build infrastructure. When doing a build.sh -u this requires
    213 	pruning the external/bsd/dhcpcd objdir.
    214 
    215 20160914:
    216 	i386, amd64, shark, ofppc and macppc have joined shark and x68k
    217 	ports in using xorg-server 1.18. This requires a clean destdir
    218 	and a clean objdir.
    219 
    220 20160527:
    221 	i386 needs a full cleandir or objdir deletion because PIE has
    222 	been enabled. (see the amd64 entry two down for further info)
    223 
    224 20160418:
    225 	libedit needs manual removal of all autogenerated files since
    226 	some of them are not autogenerated anymore. Remember that there
    227 	might be two copies of libedit if your platform builds "compat".
    228 
    229 20160410:
    230 	amd64 needs full "make cleandir" or deletion of objdir now that
    231 	PIE has been enabled for amd64.  PIE, or position-independent
    232 	executables, means all code, including executables and not just
    233 	shared libraries, is position-independent and hence able to be
    234 	relocated by ASLR, address space layout randomization.
    235 
    236 	The change was made in Makefile variables for compiler and
    237 	linker flags, for which make(1) does not record dependencies,
    238 	hence it is unable to detect that all .o files need rebuilding.
    239 
    240 	Partial rebuilds with some modified source files will likely
    241 	fail when linking executables, since the linker refuses to mix
    242 	position-independent code with position-dependent code in
    243 	position-independent executables:
    244 
    245 		.../x86_64--netbsd/bin/ld: foo.o: relocation R_X86_64_32 against `...' cannot be used when making a shared object; recompile with -fPIC
    246 
    247 20160401:
    248 	Ports switching to GCC 5.3 will need a full "make cleandir".
    249 	Some people have found that cleandir is not sufficient, so if
    250 	in doubt delete the entire object directory tree for gcc.
    251 
    252 20160306:
    253 	NetBSD's regexp implementation is now part of libnbcompat.
    254 	Nblex, nbm4, nbpax, nbsed use it and they may crash on
    255 	non-NetBSD hosts if linked with stale object files produced
    256 	while they included a non-NetBSD regex.h.
    257 	In any case, you should "make cleandir" at least these tools
    258 	before updating your toolchain.
    259 
    260 20160125:
    261 	Dtrace has been enabled by default on some architectures.
    262 	When doing an update build, make sure to clean the etc/mtree
    263 	object directory before starting the build - otherwise the
    264 	needed directories in destdir will not be created.
    265 	An easy way to do this is:
    266 	   cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
    267 
    268 20150818:
    269 	New acpica requires "make cleandir" in src/external/bsd/acpica
    270 	again.
    271 
    272 20150413:
    273 	New acpica requires "make cleandir" and reinstalling yacc
    274 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and
    275 	also "make cleandir" in /usr/src/external/bsd/acpica.
    276 
    277 20150404:
    278 	Lint changes require a full rebuild of the tool, so make
    279 	sure to build without -u option to build.sh, or manually
    280 	do a make cleandir in src/tools/lint1 and
    281 	src/usr.bin/xlint.
    282 
    283 20150310:
    284 	Improvements to openssl for arm mean that update builds of
    285 	the openssl libraries will fail. A make cleandir in
    286 	external/bsd/openssl/lib is needed
    287 
    288 20141026:
    289 	A mishap during the import of pppd may cause your corruption
    290 	in your cvs directory if you happened to do a cvs update
    291 	during a short period of time. To fix, just remove the
    292 	directory src/external/bsd/ppp/dist/pppd completely
    293 	and let cvs restore it on next update.
    294 
    295 20140721:
    296 	The src/external/mit/lua/src directory was accidentally created
    297 	and then deleted in the CVS repository.  If you get errors like
    298 
    299 	cvs [update aborted]: cannot open directory
    300 	/cvsroot/src/external/mit/lua/src: No such file or directory
    301 
    302 	then delete your local copy of that directory tree and try again.
    303 
    304 20140530:
    305 	ARM eABI switched to DWARF based exception handling. This requires
    306 	rebuilding all C++ code. It is strongly advised to do a clean build.
    307 
    308 20140131:
    309 	The new compiler_rt/libc integration moved a few things. It is strongly
    310 	advised to do a clean build. At least lib/libc, the compat version(s)
    311 	of libc, libkern, rump and the kernels need to be cleaned.
    312 
    313 20131227:
    314 	1. The new ntpd runs in a restricted mode to prevent amplification
    315 	   attacks. If you need ntpdc to work you need to explicitly enable
    316 	   mode7 in your config file. Make sure you put the necessary restrict
    317 	   statements to avoid being exposed.
    318 	2. strncat has moved from lib/libc to common/lib/libc; you might need
    319 	   to make clean in libc
    320 
    321 20131129:
    322 	The GMP sources were updated, and builds will likely fail without
    323 	cleaning their build trees for both tools and in-tree, like below.
    324 
    325 20131128:
    326 	The MPC and MPFR sources were updated, and builds may require their
    327 	tools and in-tree directories cleaned for successful updates.
    328 
    329 20130605:
    330 	The kernel option FAST_IPSEC no longer exists, it's been renamed
    331 	to IPSEC (and the older IPSEC version removed).
    332 
    333 20130605:
    334 	Previous freetype installations eroneously installed private
    335 	header files. If you are building against a non-empty $DESTDIR,
    336 	please remove ${DESTDIR}//usr/X11R7/include/freetype2/freetype/.
    337 
    338 20130531:
    339 	The xdm update may cause build failure due to xdm.man being
    340 	in the obj tree.  Make sure to ensure any like this:
    341 		nbmake: nbmake: don't know how to make xdm.man. Stop
    342 	is fixed by deleting the xdm.man in the obj tree.
    343 
    344 20130530:
    345 	Updates of many xsrc packages will leave old .pc files around.
    346 	Best to clean out the xsrc objdir entirely before rebuilds.
    347 
    348 20130301:
    349 	The removal of netiso requires manual removal of /usr/include/netiso
    350 	prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}
    351 
    352 20120726:
    353 	The update of OpenSSL requires cleaning both the OpenSSL build
    354 	directory and DESTDIR.  *Even non-update builds require cleaning
    355 	DESTDIR.* Builds done without taking these steps may fail, or in
    356 	some cases may succeed and install broken OpenSSL libraries that
    357 	cause third-party software to link incorrectly and/or crash.
    358 
    359 20120507:
    360 	The database schema for makemandb was changed.  You will
    361 	need to update the database using 'makemandb -f' or wait
    362 	for the next weekly run to fix it.
    363 
    364 20120319:
    365 	sys/conf/Makefile.kern.inc has been modified to adjust the
    366 	size of db_symtab automatically.  You need to update dbsym in
    367 	your $TOOLDIR to build kernels with options SYMTAB_SPACE.  If
    368 	you don't want this behavior, add AUTO_SYMTAB_SPACE=no to your
    369 	mk.conf.
    370 
    371 20120216:
    372 	Default for MKCATPAGES changed to NO.  Update builds will fail
    373 	unless DESTDIR is cleaned manually.  If you built between 20120207
    374 	and 20120216, daily and weekly could have created an unreadable
    375 	/var/db/man.db index for apropos.  Running makemandb -f or
    376 	the next run of weekly will fix it.
    377 
    378 20111227:
    379 	If you built between 20111225 and 20111227 you need to remove
    380 	/usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
    381 	bump has been reverted.
    382 
    383 20111125:
    384 	The "rnd" pseudodevice has been added to sys/conf/std, which
    385 	means it should no longer be explicitly listed in kernel
    386 	configuration files.  The line "pseudo-device rnd" should be
    387 	removed from any custom kernel config files users may have.
    388 
    389 20111119:
    390 	A problem with the datastructures used by the rndctl(8)
    391 	utility (pointers in datastructures in an array, making 32->64
    392 	bit compatibility very painful) has been fixed in a
    393 	non-backwards-compatible way.  If you replace your kernel,
    394 	replace your rndctl executable too.
    395 
    396 20111001:
    397 	the prop_*_send_syscall() functions from proplib(3) have been
    398 	changed and their new version is not backward compatible with the old
    399 	one.  So ensure that all consumers of these functions (currently:
    400 	quota2 code and its tests) are updated together with the new lib.
    401 
    402 20110817:
    403 	sparc has been changed to use GCC 4.5.3, so any objdir or
    404 	DESTDIR for them should be deleted before updating.
    405 
    406 20110806:
    407 	i386 and amd64 have been changed to use GCC 4.5.3, so any
    408 	objdir or DESTDIR for them should be deleted before updating.
    409 
    410 20110805:
    411 	The update to GCC 4.5.3 requires a non-trivial portion of
    412 	the tree to be cleaned.  Best to delete both objdir and
    413 	DESTDIR before running this update.  So far, only the
    414 	sparc64, mips and powerpc platforms have changed.
    415 
    416 20110803:
    417 	The layout of external/public-domain/xz has changed.  To do an
    418 	update build you will have to remove the contents of the OBJDIR
    419 	for external/public-domain/xz/bin by hand as the xz entry there
    420 	is now a directory.
    421 
    422 20110410:
    423 	The configuration of src/tools/gcc has changed.  To do an
    424 	update build you have to clean both tools/binutils and
    425 	tools/gcc by hand.
    426 
    427 20110328:
    428 	Building the Xorg binary was moved into a subdirectory to fix
    429 	ordering issues with "make all".  It may be necessary to remove
    430 	the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
    431 	if your update build fails, as the "Xorg" entry there is now a
    432 	directory.
    433 
    434 20110121:
    435 	Assembler files no longer use -traditional-cpp.  This can break
    436 	the build of individual parts of the tree.  This is handled
    437 	correctly by build.sh.  Manual builds have to update /usr/share/mk
    438 	and re-run config(1) for any kernel configurations as needed.
    439 
    440 20101217:
    441 	The tcpdump(8) program was changed to drop privileges and chroot(2)
    442 	by default.  It may be necessary to manually update passwd(5) and
    443 	group(5) in order to make the program work with existing setups.
    444 
    445 20101125:
    446 	The latest changes to setenv(3) dissallow setting environment
    447 	variables with names that contain '='.  Revision 1.18 of env.c
    448 	assumed that this was allowed.  Installing a new libc with an
    449 	old copy of /usr/bin/env causes env x=1 printenv | grep x= to
    450 	break which affects the autoconf tests for dependency finding,
    451 	so building gcc will end up printing:
    452 	    checking dependency style of gcc... none
    453 	    configure: error: no usable dependency style found
    454 	Fix it by rebuilding and re-installing env.
    455 
    456 20101119:
    457 	Recent Xorg updates in xsrc/external/mit/ may cause various build
    458 	or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
    459 	have any build problems with xsrc, or problems with mismatched
    460 	versions between xorg-server and drivers.
    461 
    462 20100604:
    463 	The update of ATF to 0.9 causes old tests written in shell to fail
    464 	unless they are rebuilt.  If you are building with MKUPDATE=yes,
    465 	you need to clean the src/external/bsd/atf/tests/ and the src/tests/
    466 	trees by hand.
    467 
    468 20100522:
    469 	Recent Xorg updates in xsrc/external/mit/ will cause various build
    470 	problems.  Delete your entire DESTDIR and OBJDIR if you have any
    471 	build problems with xsrc.
    472 
    473 20100522:
    474 	private section of <ctype.h> was splitted, and now mklocale(1)
    475 	include ctype_local.h, so you have to make cleandir in tools/mklocale.
    476 
    477 20100520:
    478 	The location of the xkb compiled descriptions has changed.  Please
    479 	remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
    480 
    481 20100222:
    482 	The shared objects file extension has been changed from .so to
    483 	.pico, in order to avoid conflicts with shared libraries names
    484 	libXX.so.  All now stale regular .so files can be removed from
    485 	your object directories.
    486 
    487 20100204:
    488 	The termcap database has been removed from the sources,
    489 	but has not been marked obsolete so it is not removed
    490 	from the system when upgrading.
    491 	As such, you will need to remove them from your object
    492 	and destination directories.
    493 
    494 20091101:
    495         After updating, it may be necessary to make the 'cleandir'
    496         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
    497         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
    498         src/tools/lex/ and src/usr.bin/lex/.
    499 
    500 20091001:
    501 	On amd64 you must rebuild tools (to get the new binutils)
    502 	before building a kernel, or the build fails on cpufunc.S.
    503 
    504 20091001:
    505 	An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
    506 	symlink, failing the build.  Delete the link, and the subdir
    507 	it is in, and retry your build.
    508 
    509 20090718:
    510 	libc build changed so that strchr() provides the extra entry
    511 	point for index().  Update build of libc.a (and libc_pic.a)
    512 	may fail because the archive contains the unwanted index.o.
    513 	(Similarly for strrchr() and rindex().)
    514 
    515 20090709:
    516 	Native Xorg was upgraded again.  Builds will probably fail again
    517 	without a clean objdir, at least for src/external/mit/xorg.
    518 
    519 20090616:
    520 	Native Xorg was upgraded.  Builds will need a clean objdir for
    521 	src/external/mit/xorg.  Upgrading a system from sets will not
    522 	work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
    523 	subdirectory has been changed into a file, and this needs to
    524 	be manually "rm -r"'ed before installing xbase.tgz.
    525 
    526 20090501:
    527 	Several new functions were added to string.h/libc, and this
    528 	can cause autoconf problems during the tool build for people
    529 	who fail to clean out their tools objects properly.  If you
    530 	note messages about stpcpy, stpncpy or strnlen accompanying a
    531 	failure during the tool build, clean out all your tools
    532 	objects and start again.
    533 
    534 20090325:
    535 	The i386 port was switched to i486 default toolchain.  This requires
    536 	cleaning your src/tools directory and $TOOLDIR and rebuilding them.
    537 
    538 20090126:
    539 	The __posix_fadvise50 system call changed assembly stub type.  You
    540 	need to 'rm -f __posix_fadvise50.*' in the libc build directory
    541 	to avoid using the old assembly stub.
    542 
    543 20090202:
    544 	pkg_install now depends on the pkgdb cache for automatic conflict
    545 	detection.  It is recommented to rebuild the cache with
    546 	``pkg_admin rebuild''.
    547 
    548 20090110:
    549 	time_t and dev_t have been bumped to 64 bit quantities.  To upgrade:
    550 	1. Make sure your kernel has COMPAT_50 in it.  Build and install.
    551 	   This is needed even in the MODULAR kernel because there is
    552 	   conditionally compiled code in rtsock.c.
    553 	2. make sure build.sh completes and the binaries in a chroot work
    554 	   before installing.
    555 	3. If you don't use build.sh and you build directly to root, and
    556 	   your build breaks in the middle, don't despair.  Make sure headers
    557 	   are installed properly, and start building libraries first libc
    558 	   and libutil, install them and then continue building all the
    559 	   libraries in src/lib and src/gnu/lib and install them.  Once
    560 	   the new libraries are installed, you can restart the build.
    561 	4. If you compile packages and you notice link time warnings,
    562 	   rebuild the required packages to update their shared libraries.
    563 	   Any package you rebuild will require rebuilding all the packages
    564 	   that depend on it.
    565 	5. Next time you run pwd_mkdb with the new binary, the file
    566 	   will be upgraded and it will not be backwards compatible.
    567 	6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
    568 	   lastlogx(5)) have been versioned, and there is a heuristic
    569 	   for utmp.  You are better off removing the old files after
    570 	   upgrading.  The automated clearing of /var/run during
    571 	   boot, and the automated rotating of files in /var/log by
    572 	   newsyslog(8), may mean that you do not have to remove the
    573 	   files manually.
    574 	7. The optional accounting file (/var/account/acct, see
    575 	   accton(8)) has not been versioned, and will need to be
    576 	   removed.  The automatic rotation of the accounting file by
    577 	   /etc/daily limits the bad consequences of failure to remove
    578 	   the file.
    579 	8. Application software that writes time_t to binary files on
    580 	   disk will break or need attention.  Most notably: if you are
    581 	   using PostgreSQL < 8.4, you need to dump your databases,
    582 	   rebuild PostgreSQL with the new time_t, then restore.
    583 
    584 20081219:
    585 	config(1) has been updated, and one of the files it creates -
    586 	swapnetbsd.o - has changed format.  You need to rebuild config
    587 	(done automatically by build.sh) and then you need to rerun
    588 	config on all kernel configuration files before rebuilding those
    589 	kernels.
    590 
    591 20081205:
    592 	If you build with MKX11=no, you should remove /etc/rc.d/xdm and
    593 	/etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
    594 	set and will appear as extra files for MKX11=no update builds.
    595 
    596 20081122:
    597 	On i386, various kernel options(4) in GENERIC including
    598 	file systems have been disabled and moved into kernel modules.
    599 	Before trying a new GENERIC kernel, you have to prepare the
    600 	following files as well as a new GENERIC kernel:
    601 
    602 	- build and install kernel modules from src/sys/modules
    603 
    604 	- install the latest bootloader, which will load a module
    605 	  for the file system from which the kernel is loaded automatically
    606 
    607 	If you have to load your kernel from a file system which is not of
    608 	the same type as the root file system, you have to load the necessary
    609 	file system module manually on the boot prompt or in the boot.cfg file.
    610 
    611 20080827:
    612 	If you built and installed a libc from sources between
    613 	2008/08/20 and 2008/08/26 you got a broken strtouq(3)
    614 	which results in false errors reported by lint(1).
    615 	Since this breaks the libc build itself, manual help is
    616 	needed -- lint must be disabled temporarily, e.g.:
    617 	  $ (cd lib/libc && make MKLINT=no dependall install)
    618 
    619 20080813:
    620 	MKDEBUG build was broken because the .depend files did not know
    621 	about .go files.  You need to remove all .depend files and rebuild.
    622 
    623 20080802:
    624 	A regression in binary compatibility for pthread_mutex_t has
    625 	been fixed.  Unfortunately, the price is breaking compatibility
    626 	for -current.
    627 
    628 	Threaded programs (using libpthread) and C++ programs (using
    629 	libstdc++) compiled after 20070907 and before 20080802 need to
    630 	be recompiled.
    631 
    632 	One way to find affected pkgsrc packages:
    633 
    634 	  $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
    635 	  $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
    636 
    637 20080731:
    638 	WAPBL (metadata journaling support) has been added, but at this
    639 	time isn't backwards compatible with pre-WAPBL aware kernels
    640 	and userland (fsck_ffs in particular).  Please make sure you
    641 	don't use a journaled filesystem with an older kernel/userland,
    642 	especially an uncleanly mounted journaled filesystem.  WAPBL
    643 	also requires the super block to be in the UFS2 format.  You
    644 	can use fsck_ffs -c 4 to update the superblock format.
    645 
    646 20080721:
    647 	Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
    648 	isn't defined.
    649 
    650 20080531:
    651 	The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
    652 	from 125 (conflicted with DRVCTLCOMMAND) to 129.  The drvctl(8)
    653 	utility needs to be rebuilt and reinstalled as older binaries
    654 	won't work correctly.  The following sequence of commands:
    655 
    656 	  $ (cd sys/sys/ && nbmake-$arch includes)
    657 	  $ (cd sbin/drvctl/ && nbmake-$arch clean)
    658 	  $ (cd sbin/drvctl/ && nbmake-$arch all)
    659 
    660 	leaves new drvctl utility in sbin/drvctl build directory.
    661 
    662 20080503:
    663 	The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
    664 
    665 20080521:
    666 	For a while, unprivileged UPDATE builds would fail to
    667 	succeed at the checkflist stage, complaining that
    668 	${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
    669 	problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
    670 	If you already hit this problem, update the .mk file,
    671 	remove ${DESTDIR}/stand/<arch>, and re-run the build.
    672 
    673 20080303:
    674 	Linker warnings are now fatal if $WARNS>0.
    675 
    676 20080126:
    677 	The posix_fadvise system call has been changed from an assembly
    678 	stub, to a c file that calls an assembly stub.  You need to
    679 	'rm -f posix_fadvise.* .depend' in the libc build directory to
    680 	avoid using the old assembly stub.
    681 
    682 20071209:
    683 	The acpiec(4) driver has been split into two attachments.  If you
    684 	get ACPI errors before the attachment, please update your kernel
    685 	configuration file appropriately or see GENERIC for more details.
    686 
    687 20071115:
    688 	The it(4) driver has been renamed to itesio(4) and the old port
    689 	argument specified in the kernel configuration file is not valid
    690 	anymore.  The itesio(4) driver now uses the Super I/O address port
    691 	rather than the EC address port.  Please update your kernel
    692 	configuration file appropriately or see GENERIC for more details.
    693 
    694 20071028:
    695 	The pccons(4) driver has been removed from the NetBSD/shark port.
    696 	You need to update any custom kernel configuration file you have
    697 	to remove any references to pccons (which includes removing the
    698 	now useless XSERVER option) and replace them with the correct
    699 	entries for the wscons driver.  See the GENERIC configuration file
    700 	for more details.
    701 
    702 20070913:
    703 	A latent bug in dhclient/dhcpd that caused it to be unable to
    704 	enumerate interfaces was fixed.  The bug began to cause
    705 	problems after 20070911 when the kernel's SIOCGIFCONF
    706 	implementation was repaired.  From 20070529 to 20070911 racoon
    707 	could not enumerate interfaces.  (These are noted because
    708 	normal kernel/userspace version matching hygiene is not
    709 	sufficient to avoid this problem.)  Ensure that both kernel
    710 	and userland are from after 20070913.
    711 
    712 20070703:
    713 	nbinstall has been renamed ${MACHINE_GNU_ARCH}-install.  It
    714 	calls the target-specific strip program, and the logic to pass
    715 	down STRIP from make has been removed.  This requires a
    716 	re-installation of tools.
    717 
    718 20070422:
    719 	The way OS emulations lookup filenames inside the emulation root
    720 	has been changed.  Rather than modify the pathname (and copy back
    721 	to userspace) namei() and lookup() directly check the emulation
    722 	root.  One side effect is that absolute symlinks inside the emulated
    723 	root file system will be relative to that file system - unless they
    724 	start /../ this is useful when the emulated root is a real install
    725 	that has such links.
    726 	This might affect symlinks that have been added to reference outside
    727 	the emulated root.
    728 
    729 20070412:
    730 	The pckbc driver on sgimips IP32 has been removed.  Use macekbc
    731 	instead.  See the GENERIC32_IP3x kernel configuration for an
    732 	example.
    733 
    734 20070319:
    735         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
    736         on many platforms due to incorrect flags settings.  If you
    737         updated and built after about 20070315, do "nbmake-$arch
    738 	cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
    739 	rebuild of object files that might have been built
    740 	incorrectly, and ensure that you have at least
    741 	src/lib/libc/Makefile 1.130.
    742 
    743 20070210:
    744         src/sys/sys/{sa.h,savar.h} were removed.
    745           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
    746               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
    747         will allow dependencies on those files to get get rebuilt
    748 
    749 20070209:
    750         The threading model was changed when the newlock2 branch
    751         was merged to NetBSD-current.  If you boot with a new
    752         kernel (version 4.99.10), then you also need a new pthread
    753         library (/usr/lib/libpthread.so.0.7).  If you boot with
    754         an old kernel, then you need the old pthread library
    755         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
    756         the pthread library in sync, old threaded applications should
    757         continue to work with an old or new kernel.  Note that named(8)
    758 	is the only threaded application in the base system.
    759 
    760 20061214:
    761 	Following the move of string_to_flags() and flags_to_string()
    762 	from the bin/ls/ sources to libutil, users doing UPDATE builds
    763 	will need to do a "make cleandir" in
    764 		tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
    765 		bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
    766 		usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
    767 		as the installation images in distrib/
    768 	in order to excise stale references to the old stat_flags.h header
    769 	file in the ls sources -- stat_flags.h has been removed.
    770 
    771 20061108:
    772 	The configure script used in the src/tools/gcc compiler has been
    773 	changed to indicate that our libc has ssp support built-in and
    774 	does not depend on -lssp and -lssp-nonshared.  You'll need to
    775 	make clean in src/tools/gcc first to rebuild the compiler.
    776 
    777 20061009:
    778 	The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
    779 	available.  Use net.inet{,6}.tcp{,6}.congctl.selected instead.
    780 
    781 20060814:
    782 	The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
    783 	withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
    784 	kernel configuration for an example.  X servers from the last
    785 	few years should cope.
    786 
    787 20060703:
    788 	MPACPI is no more.  We always configure PCI interrupts using ACPI
    789 	if we have an ACPI kernel.  The option MPACPI_SCANPCI has been renamed
    790 	to ACPI_SCANPCI.  Thanks to work from fvdl.
    791 
    792 20060627:
    793 	socket(2) has changed, and its system call has been versioned.
    794 	For userlands with the old version of socket(2), make sure that
    795 	your kernel has 'options COMPAT_30' set, or else 'bad system call'
    796 	errors will result.
    797 
    798 Hints for a more successful build:
    799 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    800     Use build.sh, but do not use its "expert mode":
    801 	This will automatically build the tools in the
    802 	   correct order, and it will keep the tools and the
    803 	   new build products from interfering with the running
    804 	   system.  This will allow you to ignore most of the
    805 	   other advice in this file.
    806     Build a new kernel first:
    807 	This makes sure that any new system calls or features
    808 	   expected by the new userland will be present.  This
    809 	   helps to avoid critical errors when upgrading.
    810     Use object directories:
    811 	This helps to keep stale object
    812 	   files from polluting the build if a Makefile "forgets"
    813 	   about one.  It also makes it easier to clean up after
    814 	   a build.  It's also necessary if you want to use the
    815 	   same source tree for multiple machines.
    816 	   To use object directories with build.sh:
    817 	    a) invoke build.sh with the "-M" or "-O" options.
    818 	   To use object directories without using build.sh:
    819 	    a) cd /usr/src ; make cleandir
    820 	    b) Add "OBJMACHINE=yes" to /etc/mk.conf
    821 	    c) Add "MKOBJDIRS=yes" to /etc/mk.conf
    822 	    d) cd /usr/src ; make build
    823 	   Note that running "make obj" in a directory will create
    824 	   in obj.$MACHINE directory.
    825     Build to a DESTDIR:
    826 	This helps to keep old installed files (especially libraries)
    827 	   from interfering with the new build.
    828 	   To build to a DESTDIR with build.sh, use the "-D" option.
    829 	   To build to a DESTDIR without using build.sh, set the DESTDIR
    830 	   environment variable before running make build.  It should be
    831 	   set to the pathname of an initially empty directory.
    832 	   Problems: if you do not use build.sh, you might need to
    833 		update critical utilities without using DESTDIR since
    834 		nothing is executed from what is installed in DESTDIR.
    835 		(See critical utils, below.)
    836     Build often:
    837 	This keeps critical utilities current enough to not choke
    838 	on any other part of the source tree that depends on up to
    839 	date functionality.  If you use build.sh, you should not have
    840 	this problem.
    841 
    842 What to do if things don't work:
    843 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    844 When things don't work there are usually a few things that commonly
    845 should be done.
    846     1)	make includes
    847 	This should be done automatically by make build.
    848     2)  cd share/mk && make install
    849 	Again, automatically done by make build.
    850 
    851 Failsafe rebuild of a small part of the tree:
    852 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    853 To make sure you rebuild something correctly you want to do
    854 something like the following:
    855     1)  Make sure the includes and .mk files are up to date.
    856     2)  Make sure any program used to build the particular
    857 	utility is up to date.  (yacc, lex, etc...)
    858     3)  cd ...path/to/util...
    859 	make cleandir
    860 	rm ...all obj directories...
    861 	make cleandir			# yes, again
    862 	make obj
    863 	make depend && make
    864 
    865 Failsafe rebuild of the entire tree:
    866 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    867 If you really want to make sure the source tree is clean and
    868 ready for a build try the following.  Note that sourcing /etc/mk.conf
    869 (a make(1) Makefile) in this manner is not right, and will not work
    870 for anyone who uses any make(1) features in /etc/mk.conf.
    871 
    872 ---cut here---
    873 #!/bin/sh
    874 . /etc/mk.conf
    875 
    876 if [ -z $NETBSDSRCDIR ] ; then
    877     NETBSDSRCDIR=/usr/src
    878 fi
    879 if [ \! -d $NETBSDSRCDIR ] ; then
    880     echo Unable to find sources
    881     exit 1
    882 fi
    883 find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
    884 
    885 if [ -z $BSDOBJDIR ] ; then
    886     BSDOBJDIR=/usr/obj
    887 fi
    888 if [ -d $BSDOBJDIR ] ; then
    889     rm -rf $BSDOBJDIR
    890 fi
    891 
    892 cd $NETBSDSRCDIR && make cleandir
    893 
    894 ---cut here---
    895 
    896 Critical utilities:
    897 ^^^^^^^^^^^^^^^^^^^
    898 	usr.bin/compile_et
    899 	usr.bin/make
    900 	usr.bin/yacc
    901 	usr.bin/lex
    902 	usr.bin/xlint
    903 	usr.bin/config
    904 
    905 Other problems and possible solutions:
    906 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    907 Symptom:Complaints involving a Makefile.
    908 Fix:	Rebuild usr.bin/make:
    909 	cd usr.bin/make && make && make install
    910 	Or, a failsafe method if that doesn't work:
    911 	cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
    912 
    913 Fix:	Make sure .mk files are up to date.
    914 	cd share/mk && make install
    915 
    916 Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
    917 Fix:	Rebuild usr.bin/config
    918 
    919 Symptom:
    920 Fix:	Rebuild usr.bin/yacc
    921 
    922 Symptom:
    923 Fix:	Rebuild usr.bin/lex
    924 
    925 Symptom:
    926 Fix:	rm /usr/lib/libbfd.a
    927 
    928 Symptom:Obsolete intermediate files are used during compilation
    929 Fix:	Try the following sequence of commands in the directory in question.
    930 	make cleandir; rm `make print-objdir`; make cleandir; make obj
    931 	(If you built the tree without "make obj" in the past, obsolete files
    932 	may remain.  The command tries to clean everything up)
    933 
    934 Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
    935 	pointer type
    936 Fix:	Rebuild and install usr.bin/menuc
    937 
    938 Symptom:mklocale not found during build in share/locale/ctype
    939 Fix:	Build and install usr.bin/mklocale
    940 
    941 Symptom:undefined reference to `__assert13' or `__unsetenv13'
    942 Fix:    Rebuild and install lib/libc
    943 
    944 Symptom:usr.bin/config fails to build.
    945 Fix:	Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
    946 
    947 Symptom:undefined reference to `getprogname' or `setprogname'
    948 Fix:    Rebuild and install lib/libc
    949 
    950 Symptom:lint does not understand the '-X' option
    951 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
    952 
    953 Symptom:Update build fails in src/tools/gcc complaining that a variable
    954 	(e.g. CPPFLAGS) has changed since the previous run.
    955 Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.
    956 
    957 Symptom:cvs [update aborted]: cannot open directory /cvsroot/src/...:
    958 	No such file or directory.
    959 Cause:	If a directory is created by mistake, then it is sometimes
    960 	deleted from the CVS repository using administrative commands
    961 	that bypass the normal cvs access controls.  If your cvs working tree
    962 	contains references to a directory that has been deleted on the
    963 	server in this way, then "cvs update" reports this error.
    964 Fix:	Recursively delete the affected directory from your working tree
    965 	and try the update again.
    966