1Updating Information for FreeBSD current users.
2
3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>.
4See end of file for further details.  For commonly done items, please see the
5COMMON ITEMS: section later in the file.  These instructions assume that you
6basically know what you are doing.  If not, then please consult the FreeBSD
7handbook:
8
9    https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html
10
11Items affecting the ports and packages system can be found in
12/usr/ports/UPDATING.  Please read that file before running portupgrade.
13
14NOTE: FreeBSD has switched from gcc to clang. If you have trouble bootstrapping
15from older versions of FreeBSD, try WITHOUT_CLANG and WITH_GCC to bootstrap to
16the tip of head, and then rebuild without this option. The bootstrap process
17from older version of current across the gcc/clang cutover is a bit fragile.
18
1920181107:
20	The '%I' format in the kern.corefile sysctl limits the number of
21	core files that a process can generate to the number stored in the
22	debug.ncores sysctl. The '%I' format is replaced by the single digit
23	index. Previously, if all indexes were taken the kernel would overwrite
24	only a core file with the highest index in a filename.
25	Currently the system will create a new core file if there is a free
26	index or if all slots are taken it will overwrite the oldest one.
27
2820180818:
29	WITH_OFED option now only enables the build for the OFED libraries
30	and some fundamental client utilities.  OpenSM and rest of the
31	debugging tools are enabled by WITH_OFED_EXTRA build switch.
32	WITH_OFED is turned on by default on amd64.
33
3420180714:
35	Clang, llvm, lld, lldb, compiler-rt and libc++ have been upgraded to
36	6.0.1.  Please see the 20141231 entry below for information about
37	prerequisites and upgrading, if you are not already using clang 3.5.0
38	or higher.
39
4020180601:
41	The releng/11.2 branch has been created from stable/11@r334458.
42
4320180504:
44	The tz database (tzdb) has been updated to 2018e.  This version more
45	correctly models time stamps in time zones with negative DST such as
46	Europe/Dublin (from 1971 on), Europe/Prague (1946/7), and
47	Africa/Windhoek (1994/2017).  This does not affect the UT offsets, only
48	time zone abbreviations and the tm_isdst flag.
49
5020180409:
51	The use of RSS hash from the network card aka flowid has been
52	disabled by default for lagg(4) as it's currently incompatible with
53	the lacp and loadbalance protocols.
54
55	This can be re-enabled by setting the following in loader.conf:
56	net.link.lagg.default_use_flowid="1"
57
5820180331:
59	Clang, llvm, lld, lldb, compiler-rt and libc++ have been upgraded to
60	6.0.0.  Please see the 20141231 entry below for information about
61	prerequisites and upgrading, if you are not already using clang 3.5.0
62	or higher.
63
6420180211:
65	The LOADER_FIREWIRE_SUPPORT build variable as been renamed to
66	WITH/OUT_LOADER_FIREWIRE. LOADER_{NO_,}GELI_SUPPORT has been renamed
67	to WITH/OUT_LOADER_GELI.
68
6920180210:
70	The geli password typed at boot is now hidden.  To restore the previous
71	behavior, see geli(8) for configuration options.
72
73	The SW_WATCHDOG option is no longer necessary to enable the
74	hardclock-based software watchdog if no hardware watchdog is
75	configured. As before, SW_WATCHDOG will cause the software
76	watchdog to be enabled even if a hardware watchdog is configured.
77
7820180108:
79	lint(1) binaries and library are no longer built by default.  To
80	enable building them, define WITH_LINT in src.conf.  If you are using
81	a FreeBSD 12 or later system to build 11-stable, you may need to
82	install a lint(1) binary to use WITH_LINT.
83
8420171003:
85	When building multiple kernels using KERNCONF, non-existent KERNCONF
86	files will produce an error and buildkernel will fail. Previously
87	missing KERNCONF files silently failed giving no indication as to
88	why, only to subsequently discover during installkernel that the
89	desired kernel was never built in the first place.
90
9120170926:
92	Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 5.0.0.
93	Please see the 20141231 entry below for information about prerequisites
94	and upgrading, if you are not already using clang 3.5.0 or higher.
95
9620170822:
97	Since the switch to GPT disk labels, fsck for UFS/FFS has been
98	unable to automatically find alternate superblocks. As of r322806,
99	the information needed to find alternate superblocks has been
100	moved to the end of the area reserved for the boot block.
101	Filesystems created with a newfs of this vintage or later
102	will create the recovery information. If you have a filesystem
103	created prior to this change and wish to have a recovery block
104	created for your filesystem, you can do so by running fsck in
105	forground mode (i.e., do not use the -p or -y options). As it
106	starts, fsck will ask ``SAVE DATA TO FIND ALTERNATE SUPERBLOCKS''
107	to which you should answer yes.
108
10920170629:
110	The releng/11.1 branch has been created from stable/11@r320475.
111
11220170518:
113	arm64 builds now use the base system LLD 4.0.0 linker by default,
114	instead of requiring that the aarch64-binutils port or package be
115	installed. To continue using aarch64-binutils, set
116	CROSS_BINUTILS_PREFIX=/usr/local/aarch64-freebsd/bin .
117
11820170529:
119	The ctl.ko module no longer implements the iSCSI target frontend:
120	cfiscsi.ko does instead.
121
122	If building cfiscsi.ko as a kernel module, the module can be loaded
123	via one of the following methods:
124	- `cfiscsi_load="YES"` in loader.conf(5).
125	- Add `cfiscsi` to `$kld_list` in rc.conf(5).
126	- ctladm(8)/ctld(8), when compiled with iSCSI support
127	  (`WITH_ISCSI=yes` in src.conf(5))
128
129	Please see cfiscsi(4) for more details.
130
13120170511:
132	The mmcsd.ko module now additionally depends on geom_flashmap.ko.
133	Also, mmc.ko and mmcsd.ko need to be a matching pair built from the
134	same source (previously, the dependency of mmcsd.ko on mmc.ko was
135	missing, but mmcsd.ko now will refuse to load if it is incompatible
136	with mmc.ko).
137
13820170414:
139	Binds and sends to the loopback addresses, IPv6 and IPv4, will now
140	use any explicitly assigned loopback address available in the jail
141	instead of using the first assigned address of the jail.
142
14320170413:
144	As of r316810 for ipfilter, keep frags is no longer assumed when
145	keep state is specified in a rule. r316810 aligns ipfilter with
146	documentation in man pages separating keep frags from keep state.
147	This allows keep state to specified without forcing keep frags
148	and allows keep frags to be specified independently of keep state.
149	To maintain previous behaviour, also specify keep frags with
150	keep state (as documented in ipf.conf.5).
151
15220170402:
153	Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 4.0.0.
154	Please see the 20141231 entry below for information about prerequisites
155	and upgrading, if you are not already using clang 3.5.0 or higher.
156
15720170323:
158	The code that provides support for ZFS .zfs/ directory functionality
159	has been reimplemented.  It's not possible now to create a snapshot
160	by mkdir under .zfs/snapshot/.  That should be the only user visible
161	change.
162
16320170319:
164	Many changes in the IPsec code have been merged from the FreeBSD-CURRENT
165	branch. The IPSEC_FILTERTUNNEL kernel option is removed in favour of
166	corresponding sysctl. The IPSEC_NAT_T kernel option is also removed,
167	and now NAT-T is supported by default. Security associations now use  
168	the single namespace for SPI allocation, so if you use several manually
169	configured security associations with the same SPI, this configuration
170	needs modification.
171
17220161217:
173	Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.9.1.
174	Please see the 20141231 entry below for information about prerequisites
175	and upgrading, if you are not already using clang 3.5.0 or higher.
176
17720161124:
178	Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.9.0.
179	Please see the 20141231 entry below for information about prerequisites
180	and upgrading, if you are not already using clang 3.5.0 or higher.
181
18220161119:
183	The layout of the pmap structure has changed for powerpc to put the pmap
184	statistics at the front for all CPU variations.  libkvm(3) and all tools
185	that link against it need to be recompiled.
186
18720161030:
188	isl(4) and cyapa(4) drivers now require a new driver,
189	chromebook_platform(4), to work properly on Chromebook-class hardware.
190	On other types of hardware the drivers may need to be configured using
191	device hints.  Please see the corresponding manual pages for details.
192
19320161210:
194	Relocatable object files with the extension of .So have been renamed
195	to use an extension of .pico instead.  The purpose of this change is
196	to avoid a name clash with shared libraries on case-insensitive file
197	systems.  On those file systems, foo.So is the same file as foo.so.
198
19920160811:
200	The releng/11.0 branch has been created from stable/11@r303970.
201
20220160708:
203	The stable/11 branch has been created from head@r302406.
204
20520160622:
206	The libc stub for the pipe(2) system call has been replaced with
207	a wrapper that calls the pipe2(2) system call and the pipe(2)
208	system call is now only implemented by the kernels that include
209	"options COMPAT_FREEBSD10" in their config file (this is the
210	default).  Users should ensure that this option is enabled in
211	their kernel or upgrade userspace to r302092 before upgrading their
212	kernel.
213
21420160527:
215	CAM will now strip leading spaces from SCSI disks' serial numbers.
216	This will effect users who create UFS filesystems on SCSI disks using
217	those disk's diskid device nodes.  For example, if /etc/fstab
218	previously contained a line like
219	"/dev/diskid/DISK-%20%20%20%20%20%20%20ABCDEFG0123456", you should
220	change it to "/dev/diskid/DISK-ABCDEFG0123456".  Users of geom
221	transforms like gmirror may also be affected.  ZFS users should
222	generally be fine.
223
22420160523:
225	The bitstring(3) API has been updated with new functionality and
226	improved performance.  But it is binary-incompatible with the old API.
227	Objects built with the new headers may not be linked against objects
228	built with the old headers.
229
23020160520:
231	The brk and sbrk functions have been removed from libc on arm64.
232	Binutils from ports has been updated to not link to these
233	functions and should be updated to the latest version before
234	installing a new libc.
235
23620160517:
237	The armv6 port now defaults to hard float ABI. Limited support
238	for running both hardfloat and soft float on the same system
239	is available using the libraries installed with -DWITH_LIBSOFT.
240	This has only been tested as an upgrade path for installworld
241	and packages may fail or need manual intervention to run. New
242	packages will be needed.
243
244	To update an existing self-hosted armv6hf system, you must add
245	TARGET_ARCH=armv6 on the make command line for both the build 
246	and the install steps.
247
24820160510:
249	Kernel modules compiled outside of a kernel build now default to
250	installing to /boot/modules instead of /boot/kernel.  Many kernel
251	modules built this way (such as those in ports) already overrode
252	KMODDIR explicitly to install into /boot/modules.  However,
253	manually building and installing a module from /sys/modules will
254	now install to /boot/modules instead of /boot/kernel.
255
25620160414:
257	The CAM I/O scheduler has been committed to the kernel. There should be
258	no user visible impact. This does enable NCQ Trim on ada SSDs. While the
259	list of known rogues that claim support for this but actually corrupt
260	data is believed to be complete, be on the lookout for data
261	corruption. The known rogue list is believed to be complete:
262
263		o Crucial MX100, M550 drives with MU01 firmware.
264		o Micron M510 and M550 drives with MU01 firmware.
265		o Micron M500 prior to MU07 firmware
266		o Samsung 830, 840, and 850 all firmwares
267		o FCCT M500 all firmwares
268
269	Crucial has firmware http://www.crucial.com/usa/en/support-ssd-firmware
270	with working NCQ TRIM. For Micron branded drives, see your sales rep for
271	updated firmware. Black listed drives will work correctly because these
272	drives work correctly so long as no NCQ TRIMs are sent to them. Given
273	this list is the same as found in Linux, it's believed there are no
274	other rogues in the market place. All other models from the above
275	vendors work.
276
277	To be safe, if you are at all concerned, you can quirk each of your
278	drives to prevent NCQ from being sent by setting:
279		kern.cam.ada.X.quirks="0x2"
280	in loader.conf. If the drive requires the 4k sector quirk, set the
281	quirks entry to 0x3.
282
28320160330:
284	The FAST_DEPEND build option has been removed and its functionality is
285	now the one true way.  The old mkdep(1) style of 'make depend' has
286	been removed.  See 20160311 for further details.
287
28820160317:
289	Resource range types have grown from unsigned long to uintmax_t.  All
290	drivers, and anything using libdevinfo, need to be recompiled.
291
29220160311:
293	WITH_FAST_DEPEND is now enabled by default for in-tree and out-of-tree
294	builds.  It no longer runs mkdep(1) during 'make depend', and the
295	'make depend' stage can safely be skipped now as it is auto ran
296	when building 'make all' and will generate all SRCS and DPSRCS before
297	building anything else.  Dependencies are gathered at compile time with
298	-MF flags kept in separate .depend files per object file.  Users should
299	run 'make cleandepend' once if using -DNO_CLEAN to clean out older
300	stale .depend files.
301
30220160306:
303	On amd64, clang 3.8.0 can now insert sections of type AMD64_UNWIND into
304	kernel modules.  Therefore, if you load any kernel modules at boot time,
305	please install the boot loaders after you install the kernel, but before
306	rebooting, e.g.:
307
308	make buildworld
309	make kernel KERNCONF=YOUR_KERNEL_HERE
310	make -C sys/boot install
311	<reboot in single user>
312
313	Then follow the usual steps, described in the General Notes section,
314	below.
315
31620160305:
317	Clang, llvm, lldb and compiler-rt have been upgraded to 3.8.0.  Please
318	see the 20141231 entry below for information about prerequisites and
319	upgrading, if you are not already using clang 3.5.0 or higher.
320
32120160301:
322	The AIO subsystem is now a standard part of the kernel.  The
323	VFS_AIO kernel option and aio.ko kernel module have been removed.
324	Due to stability concerns, asynchronous I/O requests are only
325	permitted on sockets and raw disks by default.  To enable
326	asynchronous I/O requests on all file types, set the
327	vfs.aio.enable_unsafe sysctl to a non-zero value.
328
32920160226:
330	The ELF object manipulation tool objcopy is now provided by the
331	ELF Tool Chain project rather than by GNU binutils. It should be a
332	drop-in replacement, with the addition of arm64 support. The
333	(temporary) src.conf knob WITHOUT_ELFCOPY_AS_OBJCOPY knob may be set
334	to obtain the GNU version if necessary.
335
33620160129:
337	Building ZFS pools on top of zvols is prohibited by default.  That
338	feature has never worked safely; it's always been prone to deadlocks.
339	Using a zvol as the backing store for a VM guest's virtual disk will
340	still work, even if the guest is using ZFS.  Legacy behavior can be
341	restored by setting vfs.zfs.vol.recursive=1.
342
34320160119:
344	The NONE and HPN patches has been removed from OpenSSH.  They are
345	still available in the security/openssh-portable port.
346
34720160113:
348	With the addition of ypldap(8), a new _ypldap user is now required
349	during installworld. "mergemaster -p" can be used to add the user
350	prior to installworld, as documented in the handbook.
351
35220151216:
353	The tftp loader (pxeboot) now uses the option root-path directive. As a
354	consequence it no longer looks for a pxeboot.4th file on the tftp
355	server. Instead it uses the regular /boot infrastructure as with the
356	other loaders.
357
35820151211:
359	The code to start recording plug and play data into the modules has
360	been committed. While the old tools will properly build a new kernel,
361	a number of warnings about "unknown metadata record 4" will be produced
362	for an older kldxref. To avoid such warnings, make sure to rebuild
363	the kernel toolchain (or world). Make sure that you have r292078 or
364	later when trying to build 292077 or later before rebuilding.
365
36620151207:
367	Debug data files are now built by default with 'make buildworld' and
368	installed with 'make installworld'. This facilitates debugging but
369	requires more disk space both during the build and for the installed
370	world. Debug files may be disabled by setting WITHOUT_DEBUG_FILES=yes
371	in src.conf(5).
372
37320151130:
374	r291527 changed the internal interface between the nfsd.ko and
375	nfscommon.ko modules. As such, they must both be upgraded to-gether.
376	__FreeBSD_version has been bumped because of this.
377
37820151108:
379	Add support for unicode collation strings leads to a change of
380	order of files listed by ls(1) for example. To get back to the old
381	behaviour, set LC_COLLATE environment variable to "C".
382
383	Databases administrators will need to reindex their databases given
384	collation results will be different.
385
386	Due to a bug in install(1) it is recommended to remove the ancient
387	locales before running make installworld.
388
389	rm -rf /usr/share/locale/*
390
39120151030:
392	The OpenSSL has been upgraded to 1.0.2d.  Any binaries requiring
393	libcrypto.so.7 or libssl.so.7 must be recompiled.
394
39520151020:
396	Qlogic 24xx/25xx firmware images were updated from 5.5.0 to 7.3.0.
397	Kernel modules isp_2400_multi and isp_2500_multi were removed and
398	should be replaced with isp_2400 and isp_2500 modules respectively.
399
40020151017:
401	The build previously allowed using 'make -n' to not recurse into
402	sub-directories while showing what commands would be executed, and
403	'make -n -n' to recursively show commands.  Now 'make -n' will recurse
404	and 'make -N' will not.
405
40620151012:
407	If you specify SENDMAIL_MC or SENDMAIL_CF in make.conf, mergemaster
408	and etcupdate will now use this file. A custom sendmail.cf is now
409	updated via this mechanism rather than via installworld.  If you had
410	excluded sendmail.cf in mergemaster.rc or etcupdate.conf, you may
411	want to remove the exclusion or change it to "always install".
412	/etc/mail/sendmail.cf is now managed the same way regardless of
413	whether SENDMAIL_MC/SENDMAIL_CF is used.  If you are not using
414	SENDMAIL_MC/SENDMAIL_CF there should be no change in behavior.
415
41620151011:
417	Compatibility shims for legacy ATA device names have been removed.
418	It includes ATA_STATIC_ID kernel option, kern.cam.ada.legacy_aliases
419	and kern.geom.raid.legacy_aliases loader tunables, kern.devalias.*
420	environment variables, /dev/ad* and /dev/ar* symbolic links.
421
42220151006:
423	Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.7.0.
424	Please see the 20141231 entry below for information about prerequisites
425	and upgrading, if you are not already using clang 3.5.0 or higher.
426
42720150924:
428	Kernel debug files have been moved to /usr/lib/debug/boot/kernel/,
429	and renamed from .symbols to .debug. This reduces the size requirements
430	on the boot partition or file system and provides consistency with
431	userland debug files.
432
433	When using the supported kernel installation method the
434	/usr/lib/debug/boot/kernel directory will be renamed (to kernel.old)
435	as is done with /boot/kernel.
436
437	Developers wishing to maintain the historical behavior of installing
438	debug files in /boot/kernel/ can set KERN_DEBUGDIR="" in src.conf(5).
439
44020150827:
441	The wireless drivers had undergone changes that remove the 'parent
442	interface' from the ifconfig -l output. The rc.d network scripts
443	used to check presence of a parent interface in the list, so old
444	scripts would fail to start wireless networking. Thus, etcupdate(3)
445	or mergemaster(8) run is required after kernel update, to update your
446	rc.d scripts in /etc.
447
44820150827:
449	pf no longer supports 'scrub fragment crop' or 'scrub fragment drop-ovl'
450	These configurations are now automatically interpreted as
451	'scrub fragment reassemble'.
452
45320150817:
454	Kernel-loadable modules for the random(4) device are back. To use
455	them, the kernel must have
456
457	device	random
458	options	RANDOM_LOADABLE
459
460	kldload(8) can then be used to load random_fortuna.ko
461	or random_yarrow.ko. Please note that due to the indirect
462	function calls that the loadable modules need to provide,
463	the build-in variants will be slightly more efficient.
464
465	The random(4) kernel option RANDOM_DUMMY has been retired due to
466	unpopularity. It was not all that useful anyway.
467
46820150813:
469	The WITHOUT_ELFTOOLCHAIN_TOOLS src.conf(5) knob has been retired.
470	Control over building the ELF Tool Chain tools is now provided by
471	the WITHOUT_TOOLCHAIN knob.
472
47320150810:
474	The polarity of Pulse Per Second (PPS) capture events with the
475	uart(4) driver has been corrected.  Prior to this change the PPS
476	"assert" event corresponded to the trailing edge of a positive PPS
477	pulse and the "clear" event was the leading edge of the next pulse.
478
479	As the width of a PPS pulse in a typical GPS receiver is on the
480	order of 1 millisecond, most users will not notice any significant
481	difference with this change.
482
483	Anyone who has compensated for the historical polarity reversal by
484	configuring a negative offset equal to the pulse width will need to
485	remove that workaround.
486
48720150809:
488	The default group assigned to /dev/dri entries has been changed
489	from 'wheel' to 'video' with the id of '44'. If you want to have
490	access to the dri devices please add yourself to the video group
491	with:
492
493	# pw groupmod video -m $USER
494
49520150806:
496	The menu.rc and loader.rc files will now be replaced during 
497	upgrades. Please migrate local changes to menu.rc.local and
498	loader.rc.local instead.
499
50020150805:
501	GNU Binutils versions of addr2line, c++filt, nm, readelf, size,
502	strings and strip have been removed. The src.conf(5) knob
503	WITHOUT_ELFTOOLCHAIN_TOOLS no longer provides the binutils tools.
504
50520150728:
506	As ZFS requires more kernel stack pages than is the default on some
507	architectures e.g. i386, it now warns if KSTACK_PAGES is less than
508	ZFS_MIN_KSTACK_PAGES (which is 4 at the time of writing).
509
510	Please consider using 'options KSTACK_PAGES=X' where X is greater
511	than or equal to ZFS_MIN_KSTACK_PAGES i.e. 4 in such configurations.
512
51320150706:
514	sendmail has been updated to 8.15.2.  Starting with FreeBSD 11.0
515	and sendmail 8.15, sendmail uses uncompressed IPv6 addresses by
516	default, i.e., they will not contain "::".  For example, instead
517	of ::1, it will be 0:0:0:0:0:0:0:1.  This permits a zero subnet
518	to have a more specific match, such as different map entries for
519	IPv6:0:0 vs IPv6:0.  This change requires that configuration
520	data (including maps, files, classes, custom ruleset, etc.) must
521	use the same format, so make certain such configuration data is
522	upgrading.  As a very simple check search for patterns like
523	'IPv6:[0-9a-fA-F:]*::' and 'IPv6::'.  To return to the old
524	behavior, set the m4 option confUSE_COMPRESSED_IPV6_ADDRESSES or
525	the cf option UseCompressedIPv6Addresses.
526
52720150630:
528	The default kernel entropy-processing algorithm is now
529	Fortuna, replacing Yarrow.
530
531	Assuming you have 'device random' in your kernel config
532	file, the configurations allow a kernel option to override
533	this default. You may choose *ONE* of:
534
535	options	RANDOM_YARROW	# Legacy /dev/random algorithm.
536	options	RANDOM_DUMMY	# Blocking-only driver.
537
538	If you have neither, you get Fortuna.  For most people,
539	read no further, Fortuna will give a /dev/random that works
540	like it always used to, and the difference will be irrelevant.
541
542	If you remove 'device random', you get *NO* kernel-processed
543	entropy at all. This may be acceptable to folks building
544	embedded systems, but has complications. Carry on reading,
545	and it is assumed you know what you need.
546
547	*PLEASE* read random(4) and random(9) if you are in the
548	habit of tweaking kernel configs, and/or if you are a member
549	of the embedded community, wanting specific and not-usual
550	behaviour from your security subsystems.
551
552	NOTE!! If you use RANDOM_DUMMY and/or have no 'device
553	random', you will NOT have a functioning /dev/random, and
554	many cryptographic features will not work, including SSH.
555	You may also find strange behaviour from the random(3) set
556	of library functions, in particular sranddev(3), srandomdev(3)
557	and arc4random(3). The reason for this is that the KERN_ARND
558	sysctl only returns entropy if it thinks it has some to
559	share, and with RANDOM_DUMMY or no 'device random' this
560	will never happen.
561
56220150623:
563	An additional fix for the issue described in the 20150614 sendmail
564	entry below has been been committed in revision 284717.
565
56620150616:
567	FreeBSD's old make (fmake) has been removed from the system. It is
568	available as the devel/fmake port or via pkg install fmake.
569
57020150615:
571	The fix for the issue described in the 20150614 sendmail entry
572	below has been been committed in revision 284436.  The work
573	around described in that entry is no longer needed unless the
574	default setting is overridden by a confDH_PARAMETERS configuration
575	setting of '5' or pointing to a 512 bit DH parameter file.
576
57720150614:
578	ALLOW_DEPRECATED_ATF_TOOLS/ATFFILE support has been removed from
579	atf.test.mk (included from bsd.test.mk). Please upgrade devel/atf
580	and devel/kyua to version 0.20+ and adjust any calling code to work
581	with Kyuafile and kyua.
582
58320150614:
584	The import of openssl to address the FreeBSD-SA-15:10.openssl
585	security advisory includes a change which rejects handshakes
586	with DH parameters below 768 bits.  sendmail releases prior
587	to 8.15.2 (not yet released), defaulted to a 512 bit
588	DH parameter setting for client connections.  To work around
589	this interoperability, sendmail can be configured to use a
590	2048 bit DH parameter by:
591
592	1. Edit /etc/mail/`hostname`.mc
593	2. If a setting for confDH_PARAMETERS does not exist or
594	   exists and is set to a string beginning with '5',
595	   replace it with '2'.
596	3. If a setting for confDH_PARAMETERS exists and is set to
597	   a file path, create a new file with:
598		openssl dhparam -out /path/to/file 2048
599	4. Rebuild the .cf file:
600		cd /etc/mail/; make; make install
601	5. Restart sendmail:
602		cd /etc/mail/; make restart
603
604	A sendmail patch is coming, at which time this file will be
605	updated.
606
60720150604:
608	Generation of legacy formatted entries have been disabled by default
609	in pwd_mkdb(8), as all base system consumers of the legacy formatted
610	entries were converted to use the new format by default when the new,
611	machine independent format have been added and supported since FreeBSD
612	5.x.
613
614	Please see the pwd_mkdb(8) manual page for further details.
615
61620150525:
617	Clang and llvm have been upgraded to 3.6.1 release.  Please see the
618	20141231 entry below for information about prerequisites and upgrading,
619	if you are not already using 3.5.0 or higher.
620
62120150521:
622	TI platform code switched to using vendor DTS files and this update
623	may break existing systems running on Beaglebone, Beaglebone Black,
624	and Pandaboard:
625
626	- dtb files should be regenerated/reinstalled. Filenames are the
627	  same but content is different now
628	- GPIO addressing was changed, now each GPIO bank (32 pins per bank)
629	  has its own /dev/gpiocX device, e.g. pin 121 on /dev/gpioc0 in old
630	  addressing scheme is now pin 25 on /dev/gpioc3.
631	- Pandaboard: /etc/ttys should be updated, serial console device is
632	  now /dev/ttyu2, not /dev/ttyu0
633
63420150501:
635	soelim(1) from gnu/usr.bin/groff has been replaced by usr.bin/soelim.
636	If you need the GNU extension from groff soelim(1), install groff
637	from package: pkg install groff, or via ports: textproc/groff.
638
63920150423:
640	chmod, chflags, chown and chgrp now affect symlinks in -R mode as
641	defined in symlink(7); previously symlinks were silently ignored.
642
64320150415:
644	The const qualifier has been removed from iconv(3) to comply with
645	POSIX.  The ports tree is aware of this from r384038 onwards.
646
64720150416:
648	Libraries specified by LIBADD in Makefiles must have a corresponding
649	DPADD_<lib> variable to ensure correct dependencies.  This is now
650	enforced in src.libnames.mk.
651
65220150324:
653	From legacy ata(4) driver was removed support for SATA controllers
654	supported by more functional drivers ahci(4), siis(4) and mvs(4).
655	Kernel modules ataahci and ataadaptec were removed completely,
656	replaced by ahci and mvs modules respectively.
657
65820150315:
659	Clang, llvm and lldb have been upgraded to 3.6.0 release.  Please see
660	the 20141231 entry below for information about prerequisites and
661	upgrading, if you are not already using 3.5.0 or higher.
662
66320150307:
664	The 32-bit PowerPC kernel has been changed to a position-independent
665	executable. This can only be booted with a version of loader(8)
666	newer than January 31, 2015, so make sure to update both world and
667	kernel before rebooting.
668
66920150217:
670	If you are running a -CURRENT kernel since r273872 (Oct 30th, 2014),
671	but before r278950, the RNG was not seeded properly.  Immediately
672	upgrade the kernel to r278950 or later and regenerate any keys (e.g.
673	ssh keys or openssl keys) that were generated w/ a kernel from that
674	range.  This does not affect programs that directly used /dev/random
675	or /dev/urandom.  All userland uses of arc4random(3) are affected.
676
67720150210:
678	The autofs(4) ABI was changed in order to restore binary compatibility
679	with 10.1-RELEASE.  The automountd(8) daemon needs to be rebuilt to work
680	with the new kernel.
681
68220150131:
683	The powerpc64 kernel has been changed to a position-independent
684	executable. This can only be booted with a new version of loader(8),
685	so make sure to update both world and kernel before rebooting.
686
68720150118:
688	Clang and llvm have been upgraded to 3.5.1 release.  This is a bugfix
689	only release, no new features have been added.  Please see the 20141231
690	entry below for information about prerequisites and upgrading, if you
691	are not already using 3.5.0.
692
69320150107:
694	ELF tools addr2line, elfcopy (strip), nm, size, and strings are now
695	taken from the ELF Tool Chain project rather than GNU binutils. They
696	should be drop-in replacements, with the addition of arm64 support.
697	The WITHOUT_ELFTOOLCHAIN_TOOLS= knob may be used to obtain the
698	binutils tools, if necessary. See 20150805 for updated information.
699
70020150105:
701	The default Unbound configuration now enables remote control
702	using a local socket.  Users who have already enabled the
703	local_unbound service should regenerate their configuration
704	by running "service local_unbound setup" as root.
705
70620150102:
707	The GNU texinfo and GNU info pages have been removed.
708	To be able to view GNU info pages please install texinfo from ports.
709
71020141231:
711	Clang, llvm and lldb have been upgraded to 3.5.0 release.
712
713	As of this release, a prerequisite for building clang, llvm and lldb is
714	a C++11 capable compiler and C++11 standard library.  This means that to
715	be able to successfully build the cross-tools stage of buildworld, with
716	clang as the bootstrap compiler, your system compiler or cross compiler
717	should either be clang 3.3 or later, or gcc 4.8 or later, and your
718	system C++ library should be libc++, or libdstdc++ from gcc 4.8 or
719	later.
720
721	On any standard FreeBSD 10.x or 11.x installation, where clang and
722	libc++ are on by default (that is, on x86 or arm), this should work out
723	of the box.
724
725	On 9.x installations where clang is enabled by default, e.g. on x86 and
726	powerpc, libc++ will not be enabled by default, so libc++ should be
727	built (with clang) and installed first.  If both clang and libc++ are
728	missing, build clang first, then use it to build libc++.
729
730	On 8.x and earlier installations, upgrade to 9.x first, and then follow
731	the instructions for 9.x above.
732
733	Sparc64 and mips users are unaffected, as they still use gcc 4.2.1 by
734	default, and do not build clang.
735
736	Many embedded systems are resource constrained, and will not be able to
737	build clang in a reasonable time, or in some cases at all.  In those
738	cases, cross building bootable systems on amd64 is a workaround.
739
740	This new version of clang introduces a number of new warnings, of which
741	the following are most likely to appear:
742
743	-Wabsolute-value
744
745	This warns in two cases, for both C and C++:
746	* When the code is trying to take the absolute value of an unsigned
747	  quantity, which is effectively a no-op, and almost never what was
748	  intended.  The code should be fixed, if at all possible.  If you are
749	  sure that the unsigned quantity can be safely cast to signed, without
750	  loss of information or undefined behavior, you can add an explicit
751	  cast, or disable the warning.
752
753	* When the code is trying to take an absolute value, but the called
754	  abs() variant is for the wrong type, which can lead to truncation.
755	  If you want to disable the warning instead of fixing the code, please
756	  make sure that truncation will not occur, or it might lead to unwanted
757	  side-effects.
758
759	-Wtautological-undefined-compare and
760	-Wundefined-bool-conversion
761
762	These warn when C++ code is trying to compare 'this' against NULL, while
763	'this' should never be NULL in well-defined C++ code.  However, there is
764	some legacy (pre C++11) code out there, which actively abuses this
765	feature, which was less strictly defined in previous C++ versions.
766
767	Squid and openjdk do this, for example.  The warning can be turned off
768	for C++98 and earlier, but compiling the code in C++11 mode might result
769	in unexpected behavior; for example, the parts of the program that are
770	unreachable could be optimized away.
771
77220141222:
773	The old NFS client and server (kernel options NFSCLIENT, NFSSERVER)
774	kernel sources have been removed. The .h files remain, since some
775	utilities include them. This will need to be fixed later.
776	If "mount -t oldnfs ..." is attempted, it will fail.
777	If the "-o" option on mountd(8), nfsd(8) or nfsstat(1) is used,
778	the utilities will report errors.
779
78020141121:
781	The handling of LOCAL_LIB_DIRS has been altered to skip addition of
782	directories to top level SUBDIR variable when their parent
783	directory is included in LOCAL_DIRS.  Users with build systems with
784	such hierarchies and without SUBDIR entries in the parent
785	directory Makefiles should add them or add the directories to
786	LOCAL_DIRS.
787
78820141109:
789	faith(4) and faithd(8) have been removed from the base system. Faith
790	has been obsolete for a very long time.
791
79220141104:
793	vt(4), the new console driver, is enabled by default. It brings
794	support for Unicode and double-width characters, as well as
795	support for UEFI and integration with the KMS kernel video
796	drivers.
797
798	You may need to update your console settings in /etc/rc.conf,
799	most probably the keymap. During boot, /etc/rc.d/syscons will
800	indicate what you need to do.
801
802	vt(4) still has issues and lacks some features compared to
803	syscons(4). See the wiki for up-to-date information:
804	  https://wiki.freebsd.org/Newcons
805
806	If you want to keep using syscons(4), you can do so by adding
807	the following line to /boot/loader.conf:
808	  kern.vty=sc
809
81020141102:
811	pjdfstest has been integrated into kyua as an opt-in test suite.
812	Please see share/doc/pjdfstest/README for more details on how to
813	execute it.
814
81520141009:
816	gperf has been removed from the base system for architectures
817	that use clang. Ports that require gperf will obtain it from the
818	devel/gperf port.
819
82020140923:
821	pjdfstest has been moved from tools/regression/pjdfstest to
822	contrib/pjdfstest .
823
82420140922:
825	At svn r271982, The default linux compat kernel ABI has been adjusted
826	to 2.6.18 in support of the linux-c6 compat ports infrastructure
827	update.  If you wish to continue using the linux-f10 compat ports,
828	add compat.linux.osrelease=2.6.16 to your local sysctl.conf.  Users are
829	encouraged to update their linux-compat packages to linux-c6 during
830	their next update cycle.
831
83220140729:
833	The ofwfb driver, used to provide a graphics console on PowerPC when
834	using vt(4), no longer allows mmap() of all physical memory. This
835	will prevent Xorg on PowerPC with some ATI graphics cards from
836	initializing properly unless x11-servers/xorg-server is updated to
837	1.12.4_8 or newer.
838
83920140723:
840	The xdev targets have been converted to using TARGET and
841	TARGET_ARCH instead of XDEV and XDEV_ARCH.
842
84320140719:
844	The default unbound configuration has been modified to address
845	issues with reverse lookups on networks that use private
846	address ranges.  If you use the local_unbound service, run
847	"service local_unbound setup" as root to regenerate your
848	configuration, then "service local_unbound reload" to load the
849	new configuration.
850
85120140709:
852	The GNU texinfo and GNU info pages are not built and installed
853	anymore, WITH_INFO knob has been added to allow to built and install
854	them again.
855	UPDATE: see 20150102 entry on texinfo's removal
856
85720140708:
858	The GNU readline library is now an INTERNALLIB - that is, it is
859	statically linked into consumers (GDB and variants) in the base
860	system, and the shared library is no longer installed.  The
861	devel/readline port is available for third party software that
862	requires readline.
863
86420140702:
865	The Itanium architecture (ia64) has been removed from the list of
866	known architectures. This is the first step in the removal of the
867	architecture.
868
86920140701:
870	Commit r268115 has added NFSv4.1 server support, merged from
871	projects/nfsv4.1-server.  Since this includes changes to the
872	internal interfaces between the NFS related modules, a full
873	build of the kernel and modules will be necessary.
874	__FreeBSD_version has been bumped.
875
87620140629:
877	The WITHOUT_VT_SUPPORT kernel config knob has been renamed
878	WITHOUT_VT.  (The other _SUPPORT knobs have a consistent meaning
879	which differs from the behaviour controlled by this knob.)
880
88120140619:
882	Maximal length of the serial number in CTL was increased from 16 to
883	64 chars, that breaks ABI.  All CTL-related tools, such as ctladm
884	and ctld, need to be rebuilt to work with a new kernel.
885
88620140606:
887	The libatf-c and libatf-c++ major versions were downgraded to 0 and
888	1 respectively to match the upstream numbers.  They were out of
889	sync because, when they were originally added to FreeBSD, the
890	upstream versions were not respected.  These libraries are private
891	and not yet built by default, so renumbering them should be a
892	non-issue.  However, unclean source trees will yield broken test
893	programs once the operator executes "make delete-old-libs" after a
894	"make installworld".
895
896	Additionally, the atf-sh binary was made private by moving it into
897	/usr/libexec/.  Already-built shell test programs will keep the
898	path to the old binary so they will break after "make delete-old"
899	is run.
900
901	If you are using WITH_TESTS=yes (not the default), wipe the object
902	tree and rebuild from scratch to prevent spurious test failures.
903	This is only needed once: the misnumbered libraries and misplaced
904	binaries have been added to OptionalObsoleteFiles.inc so they will
905	be removed during a clean upgrade.
906
90720140512:
908	Clang and llvm have been upgraded to 3.4.1 release.
909
91020140508:
911	We bogusly installed src.opts.mk in /usr/share/mk. This file should
912	be removed to avoid issues in the future (and has been added to
913	ObsoleteFiles.inc).
914
91520140505:
916	/etc/src.conf now affects only builds of the FreeBSD src tree. In the
917	past, it affected all builds that used the bsd.*.mk files. The old
918	behavior was a bug, but people may have relied upon it. To get this
919	behavior back, you can .include /etc/src.conf from /etc/make.conf
920	(which is still global and isn't changed). This also changes the
921	behavior of incremental builds inside the tree of individual
922	directories. Set MAKESYSPATH to ".../share/mk" to do that.
923	Although this has survived make universe and some upgrade scenarios,
924	other upgrade scenarios may have broken. At least one form of
925	temporary breakage was fixed with MAKESYSPATH settings for buildworld
926	as well... In cases where MAKESYSPATH isn't working with this
927	setting, you'll need to set it to the full path to your tree.
928
929	One side effect of all this cleaning up is that bsd.compiler.mk
930	is no longer implicitly included by bsd.own.mk. If you wish to
931	use COMPILER_TYPE, you must now explicitly include bsd.compiler.mk
932	as well.
933
93420140430:
935	The lindev device has been removed since /dev/full has been made a
936	standard device.  __FreeBSD_version has been bumped.
937
93820140424:
939	The knob WITHOUT_VI was added to the base system, which controls
940	building ex(1), vi(1), etc. Older releases of FreeBSD required ex(1)
941	in order to reorder files share/termcap and didn't build ex(1) as a
942	build tool, so building/installing with WITH_VI is highly advised for
943	build hosts for older releases.
944
945	This issue has been fixed in stable/9 and stable/10 in r277022 and
946	r276991, respectively.
947
94820140418:
949	The YES_HESIOD knob has been removed. It has been obsolete for
950	a decade. Please move to using WITH_HESIOD instead or your builds
951	will silently lack HESIOD.
952
95320140405:
954	The uart(4) driver has been changed with respect to its handling
955	of the low-level console. Previously the uart(4) driver prevented
956	any process from changing the baudrate or the CLOCAL and HUPCL
957	control flags. By removing the restrictions, operators can make
958	changes to the serial console port without having to reboot.
959	However, when getty(8) is started on the serial device that is
960	associated with the low-level console, a misconfigured terminal
961	line in /etc/ttys will now have a real impact.
962	Before upgrading the kernel, make sure that /etc/ttys has the
963	serial console device configured as 3wire without baudrate to
964	preserve the previous behaviour. E.g:
965	    ttyu0  "/usr/libexec/getty 3wire"  vt100  on  secure
966
96720140306:
968	Support for libwrap (TCP wrappers) in rpcbind was disabled by default
969	to improve performance.  To re-enable it, if needed, run rpcbind
970	with command line option -W.
971
97220140226:
973	Switched back to the GPL dtc compiler due to updates in the upstream
974	dts files not being supported by the BSDL dtc compiler. You will need
975	to rebuild your kernel toolchain to pick up the new compiler. Core dumps
976	may result while building dtb files during a kernel build if you fail
977	to do so. Set WITHOUT_GPL_DTC if you require the BSDL compiler.
978
97920140216:
980	Clang and llvm have been upgraded to 3.4 release.
981
98220140216:
983	The nve(4) driver has been removed.  Please use the nfe(4) driver
984	for NVIDIA nForce MCP Ethernet adapters instead.
985
98620140212:
987	An ABI incompatibility crept into the libc++ 3.4 import in r261283.
988	This could cause certain C++ applications using shared libraries built
989	against the previous version of libc++ to crash.  The incompatibility
990	has now been fixed, but any C++ applications or shared libraries built
991	between r261283 and r261801 should be recompiled.
992
99320140204:
994	OpenSSH will now ignore errors caused by kernel lacking of Capsicum
995	capability mode support.  Please note that enabling the feature in
996	kernel is still highly recommended.
997
99820140131:
999	OpenSSH is now built with sandbox support, and will use sandbox as
1000	the default privilege separation method.  This requires Capsicum
1001	capability mode support in kernel.
1002
100320140128:
1004	The libelf and libdwarf libraries have been updated to newer
1005	versions from upstream. Shared library version numbers for
1006	these two libraries were bumped. Any ports or binaries
1007	requiring these two libraries should be recompiled.
1008	__FreeBSD_version is bumped to 1100006.
1009
101020140110:
1011	If a Makefile in a tests/ directory was auto-generating a Kyuafile
1012	instead of providing an explicit one, this would prevent such
1013	Makefile from providing its own Kyuafile in the future during
1014	NO_CLEAN builds.  This has been fixed in the Makefiles but manual
1015	intervention is needed to clean an objdir if you use NO_CLEAN:
1016	  # find /usr/obj -name Kyuafile | xargs rm -f
1017
101820131213:
1019	The behavior of gss_pseudo_random() for the krb5 mechanism
1020	has changed, for applications requesting a longer random string
1021	than produced by the underlying enctype's pseudo-random() function.
1022	In particular, the random string produced from a session key of
1023	enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will
1024	be different at the 17th octet and later, after this change.
1025	The counter used in the PRF+ construction is now encoded as a
1026	big-endian integer in accordance with RFC 4402.
1027	__FreeBSD_version is bumped to 1100004.
1028
102920131108:
1030	The WITHOUT_ATF build knob has been removed and its functionality
1031	has been subsumed into the more generic WITHOUT_TESTS.  If you were
1032	using the former to disable the build of the ATF libraries, you
1033	should change your settings to use the latter.
1034
103520131025:
1036	The default version of mtree is nmtree which is obtained from
1037	NetBSD.  The output is generally the same, but may vary
1038	slightly.  If you found you need identical output adding
1039	"-F freebsd9" to the command line should do the trick.  For the
1040	time being, the old mtree is available as fmtree.
1041
104220131014:
1043	libbsdyml has been renamed to libyaml and moved to /usr/lib/private.
1044	This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg
1045	1.1.4_8 and verify bsdyml not linked in, before running "make
1046	delete-old-libs":
1047	  # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean
1048	  or
1049	  # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml
1050
105120131010:
1052	The stable/10 branch has been created in subversion from head
1053	revision r256279.
1054
105520131010:
1056	The rc.d/jail script has been updated to support jail(8)
1057	configuration file.  The "jail_<jname>_*" rc.conf(5) variables
1058	for per-jail configuration are automatically converted to
1059	/var/run/jail.<jname>.conf before the jail(8) utility is invoked.
1060	This is transparently backward compatible.  See below about some
1061	incompatibilities and rc.conf(5) manual page for more details.
1062
1063	These variables are now deprecated in favor of jail(8) configuration
1064	file.  One can use "rc.d/jail config <jname>" command to generate
1065	a jail(8) configuration file in /var/run/jail.<jname>.conf without
1066	running the jail(8) utility.   The default pathname of the
1067	configuration file is /etc/jail.conf and can be specified by
1068	using $jail_conf or $jail_<jname>_conf variables.
1069
1070	Please note that jail_devfs_ruleset accepts an integer at
1071	this moment.  Please consider to rewrite the ruleset name
1072	with an integer.
1073
107420130930:
1075	BIND has been removed from the base system.  If all you need
1076	is a local resolver, simply enable and start the local_unbound
1077	service instead.  Otherwise, several versions of BIND are
1078	available in the ports tree.   The dns/bind99 port is one example.
1079
1080	With this change, nslookup(1) and dig(1) are no longer in the base
1081	system.  Users should instead use host(1) and drill(1) which are
1082	in the base system.  Alternatively, nslookup and dig can
1083	be obtained by installing the dns/bind-tools port.
1084
108520130916:
1086	With the addition of unbound(8), a new unbound user is now
1087	required during installworld.  "mergemaster -p" can be used to
1088	add the user prior to installworld, as documented in the handbook.
1089
109020130911:
1091	OpenSSH is now built with DNSSEC support, and will by default
1092	silently trust signed SSHFP records.  This can be controlled with
1093	the VerifyHostKeyDNS client configuration setting.  DNSSEC support
1094	can be disabled entirely with the WITHOUT_LDNS option in src.conf.
1095
109620130906:
1097	The GNU Compiler Collection and C++ standard library (libstdc++)
1098	are no longer built by default on platforms where clang is the system
1099	compiler.  You can enable them with the WITH_GCC and WITH_GNUCXX
1100	options in src.conf.
1101
110220130905:
1103	The PROCDESC kernel option is now part of the GENERIC kernel
1104	configuration and is required for the rwhod(8) to work.
1105	If you are using custom kernel configuration, you should include
1106	'options PROCDESC'.
1107
110820130905:
1109	The API and ABI related to the Capsicum framework was modified
1110	in backward incompatible way. The userland libraries and programs
1111	have to be recompiled to work with the new kernel. This includes the
1112	following libraries and programs, but the whole buildworld is
1113	advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl,
1114	kdump, procstat, rwho, rwhod, uniq.
1115
111620130903:
1117	AES-NI intrinsic support has been added to gcc.  The AES-NI module
1118	has been updated to use this support.  A new gcc is required to build
1119	the aesni module on both i386 and amd64.
1120
112120130821:
1122	The PADLOCK_RNG and RDRAND_RNG kernel options are now devices.
1123	Thus "device padlock_rng" and "device rdrand_rng" should be
1124	used instead of "options PADLOCK_RNG" & "options RDRAND_RNG".
1125
112620130813:
1127	WITH_ICONV has been split into two feature sets.  WITH_ICONV now
1128	enables just the iconv* functionality and is now on by default.
1129	WITH_LIBICONV_COMPAT enables the libiconv api and link time
1130	compatibility.  Set WITHOUT_ICONV to build the old way.
1131	If you have been using WITH_ICONV before, you will very likely
1132	need to turn on WITH_LIBICONV_COMPAT.
1133
113420130806:
1135	INVARIANTS option now enables DEBUG for code with OpenSolaris and
1136	Illumos origin, including ZFS.  If you have INVARIANTS in your
1137	kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG
1138	explicitly.
1139	DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS)
1140	locks if WITNESS option was set.  Because that generated a lot of
1141	witness(9) reports and all of them were believed to be false
1142	positives, this is no longer done.  New option OPENSOLARIS_WITNESS
1143	can be used to achieve the previous behavior.
1144
114520130806:
1146	Timer values in IPv6 data structures now use time_uptime instead
1147	of time_second.  Although this is not a user-visible functional
1148	change, userland utilities which directly use them---ndp(8),
1149	rtadvd(8), and rtsold(8) in the base system---need to be updated
1150	to r253970 or later.
1151
115220130802:
1153	find -delete can now delete the pathnames given as arguments,
1154	instead of only files found below them or if the pathname did
1155	not contain any slashes. Formerly, the following error message
1156	would result:
1157
1158	find: -delete: <path>: relative path potentially not safe
1159
1160	Deleting the pathnames given as arguments can be prevented
1161	without error messages using -mindepth 1 or by changing
1162	directory and passing "." as argument to find. This works in the
1163	old as well as the new version of find.
1164
116520130726:
1166	Behavior of devfs rules path matching has been changed.
1167	Pattern is now always matched against fully qualified devfs
1168	path and slash characters must be explicitly matched by
1169	slashes in pattern (FNM_PATHNAME). Rulesets involving devfs
1170	subdirectories must be reviewed.
1171
117220130716:
1173	The default ARM ABI has changed to the ARM EABI. The old ABI is
1174	incompatible with the ARM EABI and all programs and modules will
1175	need to be rebuilt to work with a new kernel.
1176
1177	To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set.
1178
1179	NOTE: Support for the old ABI will be removed in the future and
1180	users are advised to upgrade.
1181
118220130709:
1183	pkg_install has been disconnected from the build if you really need it
1184	you should add WITH_PKGTOOLS in your src.conf(5).
1185
118620130709:
1187	Most of network statistics structures were changed to be able
1188	keep 64-bits counters. Thus all tools, that work with networking
1189	statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.)
1190
119120130618:
1192	Fix a bug that allowed a tracing process (e.g. gdb) to write
1193	to a memory-mapped file in the traced process's address space
1194	even if neither the traced process nor the tracing process had
1195	write access to that file.
1196
119720130615:
1198	CVS has been removed from the base system.  An exact copy
1199	of the code is available from the devel/cvs port.
1200
120120130613:
1202	Some people report the following error after the switch to bmake:
1203
1204		make: illegal option -- J
1205		usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable]
1206			...
1207		*** [buildworld] Error code 2
1208
1209	this likely due to an old instance of make in
1210	${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE})
1211	which src/Makefile will use that blindly, if it exists, so if
1212	you see the above error:
1213
1214		rm -rf `make -V MAKEPATH`
1215
1216	should resolve it.
1217
121820130516:
1219	Use bmake by default.
1220	Whereas before one could choose to build with bmake via
1221	-DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old
1222	make. The goal is to remove these knobs for 10-RELEASE.
1223
1224	It is worth noting that bmake (like gmake) treats the command
1225	line as the unit of failure, rather than statements within the
1226	command line.  Thus '(cd some/where && dosomething)' is safer
1227	than 'cd some/where; dosomething'. The '()' allows consistent
1228	behavior in parallel build.
1229
123020130429:
1231        Fix a bug that allows NFS clients to issue READDIR on files.
1232
123320130426:
1234	The WITHOUT_IDEA option has been removed because
1235	the IDEA patent expired.
1236
123720130426:
1238	The sysctl which controls TRIM support under ZFS has been renamed
1239	from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been
1240	enabled by default.
1241
124220130425:
1243	The mergemaster command now uses the default MAKEOBJDIRPREFIX
1244	rather than creating it's own in the temporary directory in
1245	order allow access to bootstrapped versions of tools such as
1246	install and mtree.  When upgrading from version of FreeBSD where
1247	the install command does not support -l, you will need to
1248	install a new mergemaster command if mergemaster -p is required.
1249	This can be accomplished with the command (cd src/usr.sbin/mergemaster
1250	&& make install).
1251
125220130404:
1253	Legacy ATA stack, disabled and replaced by new CAM-based one since
1254	FreeBSD 9.0, completely removed from the sources.  Kernel modules
1255	atadisk and atapi*, user-level tools atacontrol and burncd are
1256	removed.  Kernel option `options ATA_CAM` is now permanently enabled
1257	and removed.
1258
125920130319:
1260	SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2)
1261	and socketpair(2). Software, in particular Kerberos, may
1262	automatically detect and use these during building. The resulting
1263	binaries will not work on older kernels.
1264
126520130308:
1266	CTL_DISABLE has also been added to the sparc64 GENERIC (for further
1267	information, see the respective 20130304 entry).
1268
126920130304:
1270	Recent commits to callout(9) changed the size of struct callout,
1271	so the KBI is probably heavily disturbed. Also, some functions
1272	in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced
1273	by macros. Every kernel module using it won't load, so rebuild
1274	is requested.
1275
1276	The ctl device has been re-enabled in GENERIC for i386 and amd64,
1277	but does not initialize by default (because of the new CTL_DISABLE
1278	option) to save memory.  To re-enable it, remove the CTL_DISABLE
1279	option from the kernel config file or set kern.cam.ctl.disable=0
1280	in /boot/loader.conf.
1281
128220130301:
1283	The ctl device has been disabled in GENERIC for i386 and amd64.
1284	This was done due to the extra memory being allocated at system
1285	initialisation time by the ctl driver which was only used if
1286	a CAM target device was created.  This makes a FreeBSD system
1287	unusable on 128MB or less of RAM.
1288
128920130208:
1290	A new compression method (lz4) has been merged to -HEAD.  Please
1291	refer to zpool-features(7) for more information.
1292
1293	Please refer to the "ZFS notes" section of this file for information
1294	on upgrading boot ZFS pools.
1295
129620130129:
1297	A BSD-licensed patch(1) variant has been added and is installed
1298	as bsdpatch, being the GNU version the default patch.
1299	To inverse the logic and use the BSD-licensed one as default,
1300	while having the GNU version installed as gnupatch, rebuild
1301	and install world with the WITH_BSD_PATCH knob set.
1302
130320130121:
1304	Due to the use of the new -l option to install(1) during build
1305	and install, you must take care not to directly set the INSTALL
1306	make variable in your /etc/make.conf, /etc/src.conf, or on the
1307	command line.  If you wish to use the -C flag for all installs
1308	you may be able to add INSTALL+=-C to /etc/make.conf or
1309	/etc/src.conf.
1310
131120130118:
1312	The install(1) option -M has changed meaning and now takes an
1313	argument that is a file or path to append logs to.  In the
1314	unlikely event that -M was the last option on the command line
1315	and the command line contained at least two files and a target
1316	directory the first file will have logs appended to it.  The -M
1317	option served little practical purpose in the last decade so its
1318	use is expected to be extremely rare.
1319
132020121223:
1321	After switching to Clang as the default compiler some users of ZFS
1322	on i386 systems started to experience stack overflow kernel panics.
1323	Please consider using 'options KSTACK_PAGES=4' in such configurations.
1324
132520121222:
1326	GEOM_LABEL now mangles label names read from file system metadata.
1327	Mangling affect labels containing spaces, non-printable characters,
1328	'%' or '"'. Device names in /etc/fstab and other places may need to
1329	be updated.
1330
133120121217:
1332	By default, only the 10 most recent kernel dumps will be saved.  To
1333	restore the previous behaviour (no limit on the number of kernel dumps
1334	stored in the dump directory) add the following line to /etc/rc.conf:
1335
1336		savecore_flags=""
1337
133820121201:
1339	With the addition of auditdistd(8), a new auditdistd user is now
1340	required during installworld.  "mergemaster -p" can be used to
1341	add the user prior to installworld, as documented in the handbook.
1342
134320121117:
1344	The sin6_scope_id member variable in struct sockaddr_in6 is now
1345	filled by the kernel before passing the structure to the userland via
1346	sysctl or routing socket.  This means the KAME-specific embedded scope
1347	id in sin6_addr.s6_addr[2] is always cleared in userland application.
1348	This behavior can be controlled by net.inet6.ip6.deembed_scopeid.
1349	__FreeBSD_version is bumped to 1000025.
1350
135120121105:
1352	On i386 and amd64 systems WITH_CLANG_IS_CC is now the default.
1353	This means that the world and kernel will be compiled with clang
1354	and that clang will be installed as /usr/bin/cc, /usr/bin/c++,
1355	and /usr/bin/cpp.  To disable this behavior and revert to building
1356	with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions
1357	of current may need to bootstrap WITHOUT_CLANG first if the clang
1358	build fails (its compatibility window doesn't extend to the 9 stable
1359	branch point).
1360
136120121102:
1362	The IPFIREWALL_FORWARD kernel option has been removed. Its
1363	functionality now turned on by default.
1364
136520121023:
1366	The ZERO_COPY_SOCKET kernel option has been removed and
1367	split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP.
1368	NB: SOCKET_SEND_COW uses the VM page based copy-on-write
1369	mechanism which is not safe and may result in kernel crashes.
1370	NB: The SOCKET_RECV_PFLIP mechanism is useless as no current
1371	driver supports disposeable external page sized mbuf storage.
1372	Proper replacements for both zero-copy mechanisms are under
1373	consideration and will eventually lead to complete removal
1374	of the two kernel options.
1375
137620121023:
1377	The IPv4 network stack has been converted to network byte
1378	order. The following modules need to be recompiled together
1379	with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4),
1380	pf(4), ipfw(4), ng_ipfw(4), stf(4).
1381
138220121022:
1383	Support for non-MPSAFE filesystems was removed from VFS. The
1384	VFS_VERSION was bumped, all filesystem modules shall be
1385	recompiled.
1386
138720121018:
1388	All the non-MPSAFE filesystems have been disconnected from
1389	the build. The full list includes: codafs, hpfs, ntfs, nwfs,
1390	portalfs, smbfs, xfs.
1391
139220121016:
1393	The interface cloning API and ABI has changed. The following
1394	modules need to be recompiled together with kernel:
1395	ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4),
1396	vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4),
1397	faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4).
1398
139920121015:
1400	The sdhci driver was split in two parts: sdhci (generic SD Host
1401	Controller logic) and sdhci_pci (actual hardware driver).
1402	No kernel config modifications are required, but if you
1403	load sdhc as a module you must switch to sdhci_pci instead.
1404
140520121014:
1406	Import the FUSE kernel and userland support into base system.
1407
140820121013:
1409	The GNU sort(1) program has been removed since the BSD-licensed
1410	sort(1) has been the default for quite some time and no serious
1411	problems have been reported.  The corresponding WITH_GNU_SORT
1412	knob has also gone.
1413
141420121006:
1415	The pfil(9) API/ABI for AF_INET family has been changed. Packet
1416	filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled
1417	with new kernel.
1418
141920121001:
1420	The net80211(4) ABI has been changed to allow for improved driver
1421	PS-POLL and power-save support.  All wireless drivers need to be
1422	recompiled to work with the new kernel.
1423
142420120913:
1425	The random(4) support for the VIA hardware random number
1426	generator (`PADLOCK') is no longer enabled unconditionally.
1427	Add the padlock_rng device in the custom kernel config if
1428	needed.  The GENERIC kernels on i386 and amd64 do include the
1429	device, so the change only affects the custom kernel
1430	configurations.
1431
143220120908:
1433	The pf(4) packet filter ABI has been changed. pfctl(8) and
1434	snmp_pf module need to be recompiled to work with new kernel.
1435
143620120828:
1437	A new ZFS feature flag "com.delphix:empty_bpobj" has been merged
1438	to -HEAD. Pools that have empty_bpobj in active state can not be
1439	imported read-write with ZFS implementations that do not support
1440	this feature. For more information read the zpool-features(5)
1441	manual page.
1442
144320120727:
1444	The sparc64 ZFS loader has been changed to no longer try to auto-
1445	detect ZFS providers based on diskN aliases but now requires these
1446	to be explicitly listed in the OFW boot-device environment variable.
1447
144820120712:
1449	The OpenSSL has been upgraded to 1.0.1c.  Any binaries requiring
1450	libcrypto.so.6 or libssl.so.6 must be recompiled.  Also, there are
1451	configuration changes.  Make sure to merge /etc/ssl/openssl.cnf.
1452
145320120712:
1454	The following sysctls and tunables have been renamed for consistency
1455	with other variables:
1456	  kern.cam.da.da_send_ordered   -> kern.cam.da.send_ordered
1457	  kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered
1458
145920120628:
1460	The sort utility has been replaced with BSD sort.  For now, GNU sort
1461	is also available as "gnusort" or the default can be set back to
1462	GNU sort by setting WITH_GNU_SORT.  In this case, BSD sort will be
1463	installed as "bsdsort".
1464
146520120611:
1466	A new version of ZFS (pool version 5000) has been merged to -HEAD.
1467	Starting with this version the old system of ZFS pool versioning
1468	is superseded by "feature flags". This concept enables forward
1469	compatibility against certain future changes in functionality of ZFS
1470	pools. The first read-only compatible "feature flag" for ZFS pools
1471	is named "com.delphix:async_destroy". For more information
1472	read the new zpool-features(5) manual page.
1473	Please refer to the "ZFS notes" section of this file for information
1474	on upgrading boot ZFS pools.
1475
147620120417:
1477	The malloc(3) implementation embedded in libc now uses sources imported
1478	as contrib/jemalloc.  The most disruptive API change is to
1479	/etc/malloc.conf.  If your system has an old-style /etc/malloc.conf,
1480	delete it prior to installworld, and optionally re-create it using the
1481	new format after rebooting.  See malloc.conf(5) for details
1482	(specifically the TUNING section and the "opt.*" entries in the MALLCTL
1483	NAMESPACE section).
1484
148520120328:
1486	Big-endian MIPS TARGET_ARCH values no longer end in "eb".  mips64eb
1487	is now spelled mips64.  mipsn32eb is now spelled mipsn32.  mipseb is
1488	now spelled mips.  This is to aid compatibility with third-party
1489	software that expects this naming scheme in uname(3).  Little-endian
1490	settings are unchanged. If you are updating a big-endian mips64 machine
1491	from before this change, you may need to set MACHINE_ARCH=mips64 in
1492	your environment before the new build system will recognize your machine.
1493
149420120306:
1495	Disable by default the option VFS_ALLOW_NONMPSAFE for all supported
1496	platforms.
1497
149820120229:
1499	Now unix domain sockets behave "as expected" on	nullfs(5). Previously
1500	nullfs(5) did not pass through all behaviours to the underlying layer,
1501	as a result if we bound to a socket on the lower layer we could connect
1502	only to the lower path; if we bound to the upper layer we could connect
1503	only to	the upper path. The new behavior is one can connect to both the
1504	lower and the upper paths regardless what layer path one binds to.
1505
150620120211:
1507	The getifaddrs upgrade path broken with 20111215 has been restored.
1508	If you have upgraded in between 20111215 and 20120209 you need to
1509	recompile libc again with your kernel.  You still need to recompile
1510	world to be able to configure CARP but this restriction already
1511	comes from 20111215.
1512
151320120114:
1514	The set_rcvar() function has been removed from /etc/rc.subr.  All
1515	base and ports rc.d scripts have been updated, so if you have a
1516	port installed with a script in /usr/local/etc/rc.d you can either
1517	hand-edit the rcvar= line, or reinstall the port.
1518
1519	An easy way to handle the mass-update of /etc/rc.d:
1520	rm /etc/rc.d/* && mergemaster -i
1521
152220120109:
1523	panic(9) now stops other CPUs in the SMP systems, disables interrupts
1524	on the current CPU and prevents other threads from running.
1525	This behavior can be reverted using the kern.stop_scheduler_on_panic
1526	tunable/sysctl.
1527	The new behavior can be incompatible with kern.sync_on_panic.
1528
152920111215:
1530	The carp(4) facility has been changed significantly. Configuration
1531	of the CARP protocol via ifconfig(8) has changed, as well as format
1532	of CARP events submitted to devd(8) has changed. See manual pages
1533	for more information. The arpbalance feature of carp(4) is currently
1534	not supported anymore.
1535
1536	Size of struct in_aliasreq, struct in6_aliasreq has changed. User
1537	utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8),
1538	need to be recompiled.
1539
154020111122:
1541	The acpi_wmi(4) status device /dev/wmistat has been renamed to
1542	/dev/wmistat0.
1543
154420111108:
1545	The option VFS_ALLOW_NONMPSAFE option has been added in order to
1546	explicitely support non-MPSAFE filesystems.
1547	It is on by default for all supported platform at this present
1548	time.
1549
155020111101:
1551	The broken amd(4) driver has been replaced with esp(4) in the amd64,
1552	i386 and pc98 GENERIC kernel configuration files.
1553
155420110930:
1555	sysinstall has been removed
1556
155720110923:
1558	The stable/9 branch created in subversion.  This corresponds to the
1559	RELENG_9 branch in CVS.
1560
1561COMMON ITEMS:
1562
1563	General Notes
1564	-------------
1565	Avoid using make -j when upgrading.  While generally safe, there are
1566	sometimes problems using -j to upgrade.  If your upgrade fails with
1567	-j, please try again without -j.  From time to time in the past there
1568	have been problems using -j with buildworld and/or installworld.  This
1569	is especially true when upgrading between "distant" versions (eg one
1570	that cross a major release boundary or several minor releases, or when
1571	several months have passed on the -current branch).
1572
1573	Sometimes, obscure build problems are the result of environment
1574	poisoning.  This can happen because the make utility reads its
1575	environment when searching for values for global variables.  To run
1576	your build attempts in an "environmental clean room", prefix all make
1577	commands with 'env -i '.  See the env(1) manual page for more details.
1578
1579	When upgrading from one major version to another it is generally best
1580	to upgrade to the latest code in the currently installed branch first,
1581	then do an upgrade to the new branch. This is the best-tested upgrade
1582	path, and has the highest probability of being successful.  Please try
1583	this approach before reporting problems with a major version upgrade.
1584
1585	When upgrading a live system, having a root shell around before
1586	installing anything can help undo problems. Not having a root shell
1587	around can lead to problems if pam has changed too much from your
1588	starting point to allow continued authentication after the upgrade.
1589
1590	This file should be read as a log of events. When a later event changes
1591	information of a prior event, the prior event should not be deleted.
1592	Instead, a pointer to the entry with the new information should be
1593	placed in the old entry. Readers of this file should also sanity check
1594	older entries before relying on them blindly. Authors of new entries
1595	should write them with this in mind.
1596
1597	ZFS notes
1598	---------
1599	When upgrading the boot ZFS pool to a new version, always follow
1600	these two steps:
1601
1602	1.) recompile and reinstall the ZFS boot loader and boot block
1603	(this is part of "make buildworld" and "make installworld")
1604
1605	2.) update the ZFS boot block on your boot drive
1606
1607	The following example updates the ZFS boot block on the first
1608	partition (freebsd-boot) of a GPT partitioned drive ada0:
1609	"gpart bootcode -p /boot/gptzfsboot -i 1 ada0"
1610
1611	Non-boot pools do not need these updates.
1612
1613	To build a kernel
1614	-----------------
1615	If you are updating from a prior version of FreeBSD (even one just
1616	a few days old), you should follow this procedure.  It is the most
1617	failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1618
1619	make kernel-toolchain
1620	make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1621	make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1622
1623	To test a kernel once
1624	---------------------
1625	If you just want to boot a kernel once (because you are not sure
1626	if it works, or if you want to boot a known bad kernel to provide
1627	debugging information) run
1628	make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1629	nextboot -k testkernel
1630
1631	To just build a kernel when you know that it won't mess you up
1632	--------------------------------------------------------------
1633	This assumes you are already running a CURRENT system.  Replace
1634	${arch} with the architecture of your machine (e.g. "i386",
1635	"arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc).
1636
1637	cd src/sys/${arch}/conf
1638	config KERNEL_NAME_HERE
1639	cd ../compile/KERNEL_NAME_HERE
1640	make depend
1641	make
1642	make install
1643
1644	If this fails, go to the "To build a kernel" section.
1645
1646	To rebuild everything and install it on the current system.
1647	-----------------------------------------------------------
1648	# Note: sometimes if you are running current you gotta do more than
1649	# is listed here if you are upgrading from a really old current.
1650
1651	<make sure you have good level 0 dumps>
1652	make buildworld
1653	make kernel KERNCONF=YOUR_KERNEL_HERE
1654							[1]
1655	<reboot in single user>				[3]
1656	mergemaster -Fp					[5]
1657	make installworld
1658	mergemaster -Fi					[4]
1659	make delete-old					[6]
1660	<reboot>
1661
1662	To cross-install current onto a separate partition
1663	--------------------------------------------------
1664	# In this approach we use a separate partition to hold
1665	# current's root, 'usr', and 'var' directories.   A partition
1666	# holding "/", "/usr" and "/var" should be about 2GB in
1667	# size.
1668
1669	<make sure you have good level 0 dumps>
1670	<boot into -stable>
1671	make buildworld
1672	make buildkernel KERNCONF=YOUR_KERNEL_HERE
1673	<maybe newfs current's root partition>
1674	<mount current's root partition on directory ${CURRENT_ROOT}>
1675	make installworld DESTDIR=${CURRENT_ROOT} -DDB_FROM_SRC
1676	make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1677	make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1678	cp /etc/fstab ${CURRENT_ROOT}/etc/fstab 		   # if newfs'd
1679	<edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1680	<reboot into current>
1681	<do a "native" rebuild/install as described in the previous section>
1682	<maybe install compatibility libraries from ports/misc/compat*>
1683	<reboot>
1684
1685
1686	To upgrade in-place from stable to current
1687	----------------------------------------------
1688	<make sure you have good level 0 dumps>
1689	make buildworld					[9]
1690	make kernel KERNCONF=YOUR_KERNEL_HERE		[8]
1691							[1]
1692	<reboot in single user>				[3]
1693	mergemaster -Fp					[5]
1694	make installworld
1695	mergemaster -Fi					[4]
1696	make delete-old					[6]
1697	<reboot>
1698
1699	Make sure that you've read the UPDATING file to understand the
1700	tweaks to various things you need.  At this point in the life
1701	cycle of current, things change often and you are on your own
1702	to cope.  The defaults can also change, so please read ALL of
1703	the UPDATING entries.
1704
1705	Also, if you are tracking -current, you must be subscribed to
1706	freebsd-current@freebsd.org.  Make sure that before you update
1707	your sources that you have read and understood all the recent
1708	messages there.  If in doubt, please track -stable which has
1709	much fewer pitfalls.
1710
1711	[1] If you have third party modules, such as vmware, you
1712	should disable them at this point so they don't crash your
1713	system on reboot.
1714
1715	[3] From the bootblocks, boot -s, and then do
1716		fsck -p
1717		mount -u /
1718		mount -a
1719		cd src
1720		adjkerntz -i		# if CMOS is wall time
1721	Also, when doing a major release upgrade, it is required that
1722	you boot into single user mode to do the installworld.
1723
1724	[4] Note: This step is non-optional.  Failure to do this step
1725	can result in a significant reduction in the functionality of the
1726	system.  Attempting to do it by hand is not recommended and those
1727	that pursue this avenue should read this file carefully, as well
1728	as the archives of freebsd-current and freebsd-hackers mailing lists
1729	for potential gotchas.  The -U option is also useful to consider.
1730	See mergemaster(8) for more information.
1731
1732	[5] Usually this step is a noop.  However, from time to time
1733	you may need to do this if you get unknown user in the following
1734	step.  It never hurts to do it all the time.  You may need to
1735	install a new mergemaster (cd src/usr.sbin/mergemaster && make
1736	install) after the buildworld before this step if you last updated
1737	from current before 20130425 or from -stable before 20130430.
1738
1739	[6] This only deletes old files and directories. Old libraries
1740	can be deleted by "make delete-old-libs", but you have to make
1741	sure that no program is using those libraries anymore.
1742
1743	[8] In order to have a kernel that can run the 4.x binaries needed to
1744	do an installworld, you must include the COMPAT_FREEBSD4 option in
1745	your kernel.  Failure to do so may leave you with a system that is
1746	hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is
1747	required to run the 5.x binaries on more recent kernels.  And so on
1748	for COMPAT_FREEBSD6 and COMPAT_FREEBSD7.
1749
1750	Make sure that you merge any new devices from GENERIC since the
1751	last time you updated your kernel config file.
1752
1753	[9] When checking out sources, you must include the -P flag to have
1754	cvs prune empty directories.
1755
1756	If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1757	"?=" instead of the "=" assignment operator, so that buildworld can
1758	override the CPUTYPE if it needs to.
1759
1760	MAKEOBJDIRPREFIX must be defined in an environment variable, and
1761	not on the command line, or in /etc/make.conf.  buildworld will
1762	warn if it is improperly defined.
1763FORMAT:
1764
1765This file contains a list, in reverse chronological order, of major
1766breakages in tracking -current.  It is not guaranteed to be a complete
1767list of such breakages, and only contains entries since September 23, 2011.
1768If you need to see UPDATING entries from before that date, you will need
1769to fetch an UPDATING file from an older FreeBSD release.
1770
1771Copyright information:
1772
1773Copyright 1998-2009 M. Warner Losh.  All Rights Reserved.
1774
1775Redistribution, publication, translation and use, with or without
1776modification, in full or in part, in any form or format of this
1777document are permitted without further permission from the author.
1778
1779THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1780IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1781WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1782DISCLAIMED.  IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1783INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1784(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1785SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1786HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1787STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1788IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1789POSSIBILITY OF SUCH DAMAGE.
1790
1791Contact Warner Losh if you have any questions about your use of
1792this document.
1793
1794$FreeBSD: stable/11/UPDATING 340237 2018-11-07 20:31:36Z oshogbo $
1795