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  1. Updating Information for FreeBSD current users.
  2. This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>.
  3. See end of file for further details. For commonly done items, please see the
  4. COMMON ITEMS: section later in the file. These instructions assume that you
  5. basically know what you are doing. If not, then please consult the FreeBSD
  6. handbook:
  7. https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html
  8. Items affecting the ports and packages system can be found in
  9. /usr/ports/UPDATING. Please read that file before running portupgrade.
  11. FreeBSD 13.x has many debugging features turned on, in both the kernel
  12. and userland. These features attempt to detect incorrect use of
  13. system primitives, and encourage loud failure through extra sanity
  14. checking and fail stop semantics. They also substantially impact
  15. system performance. If you want to do performance measurement,
  16. benchmarking, and optimization, you'll want to turn them off. This
  17. includes various WITNESS- related kernel options, INVARIANTS, malloc
  18. debugging flags in userland, and various verbose features in the
  19. kernel. Many developers choose to disable these features on build
  20. machines to maximize performance. (To completely disable malloc
  21. debugging, define MALLOC_PRODUCTION in /etc/make.conf, or to merely
  22. disable the most expensive debugging functionality run
  23. "ln -s 'abort:false,junk:false' /etc/malloc.conf".)
  24. 20200523:
  25. Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
  26. been upgraded to 10.0.1. Please see the 20141231 entry below for
  27. information about prerequisites and upgrading, if you are not already
  28. using clang 3.5.0 or higher.
  29. 20200512:
  30. Support for obsolete compilers has been removed from the build system.
  31. Clang 6 and GCC 6.4 are the minimum supported versions.
  32. 20200424:
  33. closefrom(2) has been moved under COMPAT12, and replaced in libc with a
  34. stub that calls close_range(2). If using a custom kernel configuration,
  35. you may want to ensure that the COMPAT_FREEBSD12 option is included, as
  36. a slightly older -CURRENT userland and older FreeBSD userlands may not
  37. be functional without closefrom(2).
  38. 20200414:
  39. Upstream DTS from Linux 5.6 was merged and they now have the SID
  40. and THS (Secure ID controller and THermal Sensor) node present.
  41. The DTB overlays have now been removed from the tree for the H3/H5 and
  42. A64 SoCs and the aw_sid and aw_thermal driver have been updated to
  43. deal with upstream DTS. If you are using those overlays you need to
  44. remove them from loader.conf and update the DTBs on the FAT partition.
  45. 20200310:
  46. Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
  47. been upgraded to 10.0.0. Please see the 20141231 entry below for
  48. information about prerequisites and upgrading, if you are not already
  49. using clang 3.5.0 or higher.
  50. 20200309:
  51. The amd(8) automount daemon has been removed from the source tree.
  52. As of FreeBSD 10.1 autofs(5) is the preferred tool for automounting.
  53. amd is still available in the sysutils/am-utils port.
  54. 20200301:
  55. Removed brooktree driver (bktr.4) from the tree.
  56. 20200229:
  57. The WITH_GPL_DTC option has been removed. The BSD-licenced device tree
  58. compiler in usr.bin/dtc is used on all architectures which use dtc, and
  59. the GPL dtc is available (if needed) from the sysutils/dtc port.
  60. 20200229:
  61. The WITHOUT_LLVM_LIBUNWIND option has been removed. LLVM's libunwind
  62. is used by all supported CPU architectures.
  63. 20200229:
  64. GCC 4.2.1 has been removed from the tree. The WITH_GCC,
  65. WITH_GCC_BOOTSTRAP, and WITH_GNUCXX options are no longer available.
  66. Users who wish to build FreeBSD with GCC must use the external toolchain
  67. ports or packages.
  68. 20200220:
  69. ncurses has been updated to a newer version (6.2-20200215). Given the ABI
  70. has changed, users will have to rebuild all the ports that are linked to
  71. ncurses.
  72. 20200217:
  73. The size of struct vnet and the magic cookie have changed.
  74. Users need to recompile libkvm and all modules using VIMAGE
  75. together with their new kernel.
  76. 20200212:
  77. Defining the long deprecated NO_CTF, NO_DEBUG_FILES, NO_INSTALLLIB,
  78. NO_MAN, NO_PROFILE, and NO_WARNS variables is now an error. Update
  79. your Makefiles and scripts to define MK_<var>=no instead as required.
  80. One exception to this is that program or library Makefiles should
  81. define MAN to empty rather than setting MK_MAN=no.
  82. 20200108:
  83. Clang/LLVM is now the default compiler and LLD the default
  84. linker for riscv64.
  85. 20200107:
  86. make universe no longer uses GCC 4.2.1 on any architectures.
  87. Architectures not supported by in-tree Clang/LLVM require an
  88. external toolchain package.
  89. 20200104:
  90. GCC 4.2.1 is now not built by default, as part of the GCC 4.2.1
  91. retirement plan. Specifically, the GCC, GCC_BOOTSTRAP, and GNUCXX
  92. options default to off for all supported CPU architectures. As a
  93. short-term transition aid they may be enabled via WITH_* options.
  94. GCC 4.2.1 is expected to be removed from the tree on 2020-03-31.
  95. 20200102:
  96. Support for armv5 has been disconnected and is being removed. The
  97. machine combination MACHINE=arm MACHINE_ARCH=arm is no longer valid.
  98. You must now use a MACHINE_ARCH of armv6 or armv7. The default
  99. MACHINE_ARCH for MACHINE=arm is now armv7.
  100. 20191226:
  101. Clang/LLVM is now the default compiler for all powerpc architectures.
  102. LLD is now the default linker for powerpc64. The change for powerpc64
  103. also includes a change to the ELFv2 ABI, incompatible with the existing
  104. ABI.
  105. 20191226:
  106. Kernel-loadable random(4) modules are no longer unloadable.
  107. 20191222:
  108. Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
  109. been upgraded to 9.0.1. Please see the 20141231 entry below for
  110. information about prerequisites and upgrading, if you are not already
  111. using clang 3.5.0 or higher.
  112. 20191212:
  113. r355677 has modified the internal interface used between the
  114. NFS modules in the kernel. As such, they must all be upgraded
  115. simultaneously. I will do a version bump for this.
  116. 20191205:
  117. The root certificates of the Mozilla CA Certificate Store have been
  118. imported into the base system and can be managed with the certctl(8)
  119. utility. If you have installed the security/ca_root_nss port or package
  120. with the ETCSYMLINK option (the default), be advised that there may be
  121. differences between those included in the port and those included in
  122. base due to differences in nss branch used as well as general update
  123. frequency. Note also that certctl(8) cannot manage certs in the
  124. format used by the security/ca_root_nss port.
  125. 20191120:
  126. The amd(8) automount daemon has been disabled by default, and will be
  127. removed in the future. As of FreeBSD 10.1 the autofs(5) is available
  128. for automounting.
  129. 20191107:
  130. The nctgpio and wbwd drivers have been moved to the superio bus.
  131. If you have one of these drivers in a kernel configuration, then
  132. you should add device superio to it. If you use one of these drivers
  133. as a module and you compile a custom set of modules, then you should
  134. add superio to the set.
  135. 20191021:
  136. KPIs for network drivers to access interface addresses have changed.
  137. Users need to recompile NIC driver modules together with kernel.
  138. 20191021:
  139. The net.link.tap.user_open sysctl no longer prevents user opening of
  140. already created /dev/tapNN devices. Access is still controlled by
  141. node permissions, just like tun devices. The net.link.tap.user_open
  142. sysctl is now used only to allow users to perform devfs cloning of
  143. tap devices, and the subsequent open may not succeed if the user is not
  144. in the appropriate group. This sysctl may be deprecated/removed
  145. completely in the future.
  146. 20191009:
  147. mips, powerpc, and sparc64 are no longer built as part of
  148. universe / tinderbox unless MAKE_OBSOLETE_GCC is defined. If
  149. not defined, mips, powerpc, and sparc64 builds will look for
  150. the xtoolchain binaries and if installed use them for universe
  151. builds. As llvm 9.0 becomes vetted for these architectures, they
  152. will be removed from the list.
  153. 20191009:
  154. Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
  155. been upgraded to 9.0.0. Please see the 20141231 entry below for
  156. information about prerequisites and upgrading, if you are not already
  157. using clang 3.5.0 or higher.
  158. 20191003:
  159. The hpt27xx, hptmv, hptnr, and hptrr drivers have been removed from
  160. GENERIC. They are available as modules and can be loaded by adding
  161. to /boot/loader.conf hpt27xx_load="YES", hptmv_load="YES",
  162. hptnr_load="YES", or hptrr_load="YES", respectively.
  163. 20190913:
  164. ntpd no longer by default locks its pages in memory, allowing them
  165. to be paged out by the kernel. Use rlimit memlock to restore
  166. historic BSD behaviour. For example, add "rlimit memlock 32"
  167. to ntp.conf to lock up to 32 MB of ntpd address space in memory.
  168. 20190823:
  169. Several of ping6's options have been renamed for better consistency
  170. with ping. If you use any of -ARWXaghmrtwx, you must update your
  171. scripts. See ping6(8) for details.
  172. 20190727:
  173. The vfs.fusefs.sync_unmount and vfs.fusefs.init_backgrounded sysctls
  174. and the "-o sync_unmount" and "-o init_backgrounded" mount options have
  175. been removed from mount_fusefs(8). You can safely remove them from
  176. your scripts, because they had no effect.
  177. The vfs.fusefs.fix_broken_io, vfs.fusefs.sync_resize,
  178. vfs.fusefs.refresh_size, vfs.fusefs.mmap_enable,
  179. vfs.fusefs.reclaim_revoked, and vfs.fusefs.data_cache_invalidate
  180. sysctls have been removed. If you felt the need to set any of them to
  181. a non-default value, please tell asomers@FreeBSD.org why.
  182. 20190713:
  183. Default permissions on the /var/account/acct file (and copies of it
  184. rotated by periodic daily scripts) are changed from 0644 to 0640
  185. because the file contains sensitive information that should not be
  186. world-readable. If the /var/account directory must be created by
  187. rc.d/accounting, the mode used is now 0750. Admins who use the
  188. accounting feature are encouraged to change the mode of an existing
  189. /var/account directory to 0750 or 0700.
  190. 20190620:
  191. Entropy collection and the /dev/random device are no longer optional
  192. components. The "device random" option has been removed.
  193. Implementations of distilling algorithms can still be made loadable
  194. with "options RANDOM_LOADABLE" (e.g., random_fortuna.ko).
  195. 20190612:
  196. Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
  197. been upgraded to 8.0.1. Please see the 20141231 entry below for
  198. information about prerequisites and upgrading, if you are not already
  199. using clang 3.5.0 or higher.
  200. 20190608:
  201. A fix was applied to i386 kernel modules to avoid panics with
  202. dpcpu or vnet. Users need to recompile i386 kernel modules
  203. having pcpu or vnet sections or they will refuse to load.
  204. 20190513:
  205. User-wired pages now have their own counter,
  206. vm.stats.vm.v_user_wire_count. The vm.max_wired sysctl was renamed
  207. to vm.max_user_wired and changed from an unsigned int to an unsigned
  208. long. bhyve VMs wired with the -S are now subject to the user
  209. wiring limit; the vm.max_user_wired sysctl may need to be tuned to
  210. avoid running into the limit.
  211. 20190507:
  212. The IPSEC option has been removed from GENERIC. Users requiring
  213. ipsec(4) must now load the ipsec(4) kernel module.
  214. 20190507:
  215. The tap(4) driver has been folded into tun(4), and the module has been
  216. renamed to tuntap. You should update any kld_list="if_tap" or
  217. kld_list="if_tun" entries in /etc/rc.conf, if_tap_load="YES" or
  218. if_tun_load="YES" entries in /boot/loader.conf to load the if_tuntap
  219. module instead, and "device tap" or "device tun" entries in kernel
  220. config files to select the tuntap device instead.
  221. 20190418:
  222. The following knobs have been added related to tradeoffs between
  223. safe use of the random device and availability in the absence of
  224. entropy:
  225. kern.random.initial_seeding.bypass_before_seeding: tunable; set
  226. non-zero to bypass the random device prior to seeding, or zero to
  227. block random requests until the random device is initially seeded.
  228. For now, set to 1 (unsafe) by default to restore pre-r346250 boot
  229. availability properties.
  230. kern.random.initial_seeding.read_random_bypassed_before_seeding:
  231. read-only diagnostic sysctl that is set when bypass is enabled and
  232. read_random(9) is bypassed, to enable programmatic handling of this
  233. initial condition, if desired.
  234. kern.random.initial_seeding.arc4random_bypassed_before_seeding:
  235. Similar to the above, but for for arc4random(9) initial seeding.
  236. kern.random.initial_seeding.disable_bypass_warnings: tunable; set
  237. non-zero to disable warnings in dmesg when the same conditions are
  238. met as for the diagnostic sysctls above. Defaults to zero, i.e.,
  239. produce warnings in dmesg when the conditions are met.
  240. 20190416:
  241. The loadable random module KPI has changed; the random_infra_init()
  242. routine now requires a 3rd function pointer for a bool (*)(void)
  243. method that returns true if the random device is seeded (and
  244. therefore unblocked).
  245. 20190404:
  246. r345895 reverts r320698. This implies that an nfsuserd(8) daemon
  247. built from head sources between r320757 (July 6, 2017) and
  248. r338192 (Aug. 22, 2018) will not work unless the "-use-udpsock"
  249. is added to the command line.
  250. nfsuserd daemons built from head sources that are post-r338192 are
  251. not affected and should continue to work.
  252. 20190320:
  253. The fuse(4) module has been renamed to fusefs(4) for consistency with
  254. other filesystems. You should update any kld_load="fuse" entries in
  255. /etc/rc.conf, fuse_load="YES" entries in /boot/loader.conf, and
  256. "options FUSE" entries in kernel config files.
  257. 20190304:
  258. Clang, llvm, lld, lldb, compiler-rt and libc++ have been upgraded to
  259. 8.0.0. Please see the 20141231 entry below for information about
  260. prerequisites and upgrading, if you are not already using clang 3.5.0
  261. or higher.
  262. 20190226:
  263. geom_uzip(4) depends on the new module xz. If geom_uzip is statically
  264. compiled into your custom kernel, add 'device xz' statement to the
  265. kernel config.
  266. 20190219:
  267. drm and drm2 have been removed from the tree. Please see
  268. https://wiki.freebsd.org/Graphics for the latest information on
  269. migrating to the drm ports.
  270. 20190131:
  271. Iflib is no longer unconditionally compiled into the kernel. Drivers
  272. using iflib and statically compiled into the kernel, now require
  273. the 'device iflib' config option. For the same drivers loaded as
  274. modules on kernels not having 'device iflib', the iflib.ko module
  275. is loaded automatically.
  276. 20190125:
  277. The IEEE80211_AMPDU_AGE and AH_SUPPORT_AR5416 kernel configuration
  278. options no longer exist since r343219 and r343427 respectively;
  279. nothing uses them, so they should be just removed from custom
  280. kernel config files.
  281. 20181230:
  282. r342635 changes the way efibootmgr(8) works by requiring users to add
  283. the -b (bootnum) parameter for commands where the bootnum was previously
  284. specified with each option. For example 'efibootmgr -B 0001' is now
  285. 'efibootmgr -B -b 0001'.
  286. 20181220:
  287. r342286 modifies the NFSv4 server so that it obeys vfs.nfsd.nfs_privport
  288. in the same as it is applied to NFSv2 and 3. This implies that NFSv4
  289. servers that have vfs.nfsd.nfs_privport set will only allow mounts
  290. from clients using a reserved port#. Since both the FreeBSD and Linux
  291. NFSv4 clients use reserved port#s by default, this should not affect
  292. most NFSv4 mounts.
  293. 20181219:
  294. The XLP config has been removed. We can't support 64-bit atomics in this
  295. kernel because it is running in 32-bit mode. XLP users must transition
  296. to running a 64-bit kernel (XLP64 or XLPN32).
  297. The mips GXEMUL support has been removed from FreeBSD. MALTA* + qemu is
  298. the preferred emulator today and we don't need two different ones.
  299. The old sibyte / swarm / Broadcom BCM1250 support has been
  300. removed from the mips port.
  301. 20181211:
  302. Clang, llvm, lld, lldb, compiler-rt and libc++ have been upgraded to
  303. 7.0.1. Please see the 20141231 entry below for information about
  304. prerequisites and upgrading, if you are not already using clang 3.5.0
  305. or higher.
  306. 20181211:
  307. Remove the timed and netdate programs from the base tree. Setting
  308. the time with these daemons has been obsolete for over a decade.
  309. 20181126:
  310. On amd64, arm64 and armv7 (architectures that install LLVM's ld.lld
  311. linker as /usr/bin/ld) GNU ld is no longer installed as ld.bfd, as
  312. it produces broken binaries when ifuncs are in use. Users needing
  313. GNU ld should install the binutils port or package.
  314. 20181123:
  315. The BSD crtbegin and crtend code has been enabled by default. It has
  316. had extensive testing on amd64, arm64, and i386. It can be disabled
  317. by building a world with -DWITHOUT_BSD_CRTBEGIN.
  318. 20181115:
  319. The set of CTM commands (ctm, ctm_smail, ctm_rmail, ctm_dequeue)
  320. has been converted to a port (misc/ctm) and will be removed from
  321. FreeBSD-13. It is available as a package (ctm) for all supported
  322. FreeBSD versions.
  323. 20181110:
  324. The default newsyslog.conf(5) file has been changed to only include
  325. files in /etc/newsyslog.conf.d/ and /usr/local/etc/newsyslog.conf.d/ if
  326. the filenames end in '.conf' and do not begin with a '.'.
  327. You should check the configuration files in these two directories match
  328. this naming convention. You can verify which configuration files are
  329. being included using the command:
  330. $ newsyslog -Nrv
  331. 20181015:
  332. Ports for the DRM modules have been simplified. Now, amd64 users should
  333. just install the drm-kmod port. All others should install
  334. drm-legacy-kmod.
  335. Graphics hardware that's newer than about 2010 usually works with
  336. drm-kmod. For hardware older than 2013, however, some users will need
  337. to use drm-legacy-kmod if drm-kmod doesn't work for them. Hardware older
  338. than 2008 usually only works in drm-legacy-kmod. The graphics team can
  339. only commit to hardware made since 2013 due to the complexity of the
  340. market and difficulty to test all the older cards effectively. If you
  341. have hardware supported by drm-kmod, you are strongly encouraged to use
  342. that as you will get better support.
  343. Other than KPI chasing, drm-legacy-kmod will not be updated. As outlined
  344. elsewhere, the drm and drm2 modules will be eliminated from the src base
  345. soon (with a limited exception for arm). Please update to the package
  346. asap and report any issues to x11@freebsd.org.
  347. Generally, anybody using the drm*-kmod packages should add
  348. WITHOUT_DRM_MODULE=t and WITHOUT_DRM2_MODULE=t to avoid nasty
  349. cross-threading surprises, especially with automatic driver
  350. loading from X11 startup. These will become the defaults in 13-current
  351. shortly.
  352. 20181012:
  353. The ixlv(4) driver has been renamed to iavf(4). As a consequence,
  354. custom kernel and module loading configuration files must be updated
  355. accordingly. Moreover, interfaces previous presented as ixlvN to the
  356. system are now exposed as iavfN and network configuration files must
  357. be adjusted as necessary.
  358. 20181009:
  359. OpenSSL has been updated to version 1.1.1. This update included
  360. additional various API changes throughout the base system. It is
  361. important to rebuild third-party software after upgrading. The value
  362. of __FreeBSD_version has been bumped accordingly.
  363. 20181006:
  364. The legacy DRM modules and drivers have now been added to the loader's
  365. module blacklist, in favor of loading them with kld_list in rc.conf(5).
  366. The module blacklist may be overridden with the loader.conf(5)
  367. 'module_blacklist' variable, but loading them via rc.conf(5) is strongly
  368. encouraged.
  369. 20181002:
  370. The cam(4) based nda(4) driver will be used over nvd(4) by default on
  371. powerpc64. You may set 'options NVME_USE_NVD=1' in your kernel conf or
  372. loader tunable 'hw.nvme.use_nvd=1' if you wish to use the existing
  373. driver. Make sure to edit /boot/etc/kboot.conf and fstab to use the
  374. nda device name.
  375. 20180913:
  376. Reproducible build mode is now on by default, in preparation for
  377. FreeBSD 12.0. This eliminates build metadata such as the user,
  378. host, and time from the kernel (and uname), unless the working tree
  379. corresponds to a modified checkout from a version control system.
  380. The previous behavior can be obtained by setting the /etc/src.conf
  382. 20180826:
  383. The Yarrow CSPRNG has been removed from the kernel as it has not been
  384. supported by its designers since at least 2003. Fortuna has been the
  385. default since FreeBSD-11.
  386. 20180822:
  387. devctl freeze/thaw have gone into the tree, the rc scripts have been
  388. updated to use them and devmatch has been changed. You should update
  389. kernel, userland and rc scripts all at the same time.
  390. 20180818:
  391. The default interpreter has been switched from 4th to Lua.
  392. LOADER_DEFAULT_INTERP, documented in build(7), will override the default
  393. interpreter. If you have custom FORTH code you will need to set
  394. LOADER_DEFAULT_INTERP=4th (valid values are 4th, lua or simp) in
  395. src.conf for the build. This will create default hard links between
  396. loader and loader_4th instead of loader and loader_lua, the new default.
  397. If you are using UEFI it will create the proper hard link to loader.efi.
  398. bhyve uses userboot.so. It remains 4th-only until some issues are solved
  399. regarding coexisting with multiple versions of FreeBSD are resolved.
  400. 20180815:
  401. ls(1) now respects the COLORTERM environment variable used in other
  402. systems and software to indicate that a colored terminal is both
  403. supported and desired. If ls(1) is suddenly emitting colors, they may
  404. be disabled again by either removing the unwanted COLORTERM from your
  405. environment, or using `ls --color=never`. The ls(1) specific CLICOLOR
  406. may not be observed in a future release.
  407. 20180808:
  408. The default pager for most commands has been changed to "less". To
  409. restore the old behavior, set PAGER="more" and MANPAGER="more -s" in
  410. your environment.
  411. 20180731:
  412. The jedec_ts(4) driver has been removed. A superset of its functionality
  413. is available in the jedec_dimm(4) driver, and the manpage for that
  414. driver includes migration instructions. If you have "device jedec_ts"
  415. in your kernel configuration file, it must be removed.
  416. 20180730:
  417. amd64/GENERIC now has EFI runtime services, EFIRT, enabled by default.
  418. This should have no effect if the kernel is booted via BIOS/legacy boot.
  419. EFIRT may be disabled via a loader tunable, efi.rt.disabled, if a system
  420. has a buggy firmware that prevents a successful boot due to use of
  421. runtime services.
  422. 20180727:
  423. Atmel AT91RM9200 and AT91SAM9, Cavium CNS 11xx and XScale
  424. support has been removed from the tree. These ports were
  425. obsolete and/or known to be broken for many years.
  426. 20180723:
  427. loader.efi has been augmented to participate more fully in the
  428. UEFI boot manager protocol. loader.efi will now look at the
  429. BootXXXX environment variable to determine if a specific kernel
  430. or root partition was specified. XXXX is derived from BootCurrent.
  431. efibootmgr(8) manages these standard UEFI variables.
  432. 20180720:
  433. zfsloader's functionality has now been folded into loader.
  434. zfsloader is no longer necessary once you've updated your
  435. boot blocks. For a transition period, we will install a
  436. hardlink for zfsloader to loader to allow a smooth transition
  437. until the boot blocks can be updated (hard link because old
  438. zfs boot blocks don't understand symlinks).
  439. 20180719:
  440. ARM64 now have efifb support, if you want to have serial console
  441. on your arm64 board when an screen is connected and the bootloader
  442. setup a frame buffer for us to use, just add :
  443. boot_serial=YES
  444. boot_multicons=YES
  445. in /boot/loader.conf
  446. For Raspberry Pi 3 (RPI) users, this is needed even if you don't have
  447. an screen connected as the firmware will setup a frame buffer are that
  448. u-boot will expose as an EFI frame buffer.
  449. 20180719:
  450. New uid:gid added, ntpd:ntpd (123:123). Be sure to run mergemaster
  451. or take steps to update /etc/passwd before doing installworld on
  452. existing systems. Do not skip the "mergemaster -Fp" step before
  453. installworld, as described in the update procedures near the bottom
  454. of this document. Also, rc.d/ntpd now starts ntpd(8) as user ntpd
  455. if the new mac_ntpd(4) policy is available, unless ntpd_flags or
  456. the ntp config file contain options that change file/dir locations.
  457. When such options (e.g., "statsdir" or "crypto") are used, ntpd can
  458. still be run as non-root by setting ntpd_user=ntpd in rc.conf, after
  459. taking steps to ensure that all required files/dirs are accessible
  460. by the ntpd user.
  461. 20180717:
  462. Big endian arm support has been removed.
  463. 20180711:
  464. The static environment setup in kernel configs is no longer mutually
  465. exclusive with the loader(8) environment by default. In order to
  466. restore the previous default behavior of disabling the loader(8)
  467. environment if a static environment is present, you must specify
  468. loader_env.disabled=1 in the static environment.
  469. 20180705:
  470. The ABI of syscalls used by management tools like sockstat and
  471. netstat has been broken to allow 32-bit binaries to work on
  472. 64-bit kernels without modification. These programs will need
  473. to match the kernel in order to function. External programs may
  474. require minor modifications to accommodate a change of type in
  475. structures from pointers to 64-bit virtual addresses.
  476. 20180702:
  477. On i386 and amd64 atomics are now inlined. Out of tree modules using
  478. atomics will need to be rebuilt.
  479. 20180701:
  480. The '%I' format in the kern.corefile sysctl limits the number of
  481. core files that a process can generate to the number stored in the
  482. debug.ncores sysctl. The '%I' format is replaced by the single digit
  483. index. Previously, if all indexes were taken the kernel would overwrite
  484. only a core file with the highest index in a filename.
  485. Currently the system will create a new core file if there is a free
  486. index or if all slots are taken it will overwrite the oldest one.
  487. 20180630:
  488. Clang, llvm, lld, lldb, compiler-rt and libc++ have been upgraded to
  489. 6.0.1. Please see the 20141231 entry below for information about
  490. prerequisites and upgrading, if you are not already using clang 3.5.0
  491. or higher.
  492. 20180628:
  493. r335753 introduced a new quoting method. However, etc/devd/devmatch.conf
  494. needed to be changed to work with it. This change was made with r335763
  495. and requires a mergemaster / etcupdate / etc to update the installed
  496. file.
  497. 20180612:
  498. r334930 changed the interface between the NFS modules, so they all
  499. need to be rebuilt. r335018 did a __FreeBSD_version bump for this.
  500. 20180530:
  501. As of r334391 lld is the default amd64 system linker; it is installed
  502. as /usr/bin/ld. Kernel build workarounds (see 20180510 entry) are no
  503. longer necessary.
  504. 20180530:
  505. The kernel / userland interface for devinfo changed, so you'll
  506. need a new kernel and userland as a pair for it to work (rebuilding
  507. lib/libdevinfo is all that's required). devinfo and devmatch will
  508. not work, but everything else will when there's a mismatch.
  509. 20180523:
  510. The on-disk format for hwpmc callchain records has changed to include
  511. threadid corresponding to a given record. This changes the field offsets
  512. and thus requires that libpmcstat be rebuilt before using a kernel
  513. later than r334108.
  514. 20180517:
  515. The vxge(4) driver has been removed. This driver was introduced into
  516. HEAD one week before the Exar left the Ethernet market and is not
  517. known to be used. If you have device vxge in your kernel config file
  518. it must be removed.
  519. 20180510:
  520. The amd64 kernel now requires a ld that supports ifunc to produce a
  521. working kernel, either lld or a newer binutils. lld is built by default
  522. on amd64, and the 'buildkernel' target uses it automatically. However,
  523. it is not the default linker, so building the kernel the traditional
  524. way requires LD=ld.lld on the command line (or LD=/usr/local/bin/ld for
  525. binutils port/package). lld will soon be default, and this requirement
  526. will go away.
  527. NOTE: As of r334391 lld is the default system linker on amd64, and no
  528. workaround is necessary.
  529. 20180508:
  530. The nxge(4) driver has been removed. This driver was for PCI-X 10g
  531. cards made by s2io/Neterion. The company was acquired by Exar and
  532. no longer sells or supports Ethernet products. If you have device
  533. nxge in your kernel config file it must be removed.
  534. 20180504:
  535. The tz database (tzdb) has been updated to 2018e. This version more
  536. correctly models time stamps in time zones with negative DST such as
  537. Europe/Dublin (from 1971 on), Europe/Prague (1946/7), and
  538. Africa/Windhoek (1994/2017). This does not affect the UT offsets, only
  539. time zone abbreviations and the tm_isdst flag.
  540. 20180502:
  541. The ixgb(4) driver has been removed. This driver was for an early and
  542. uncommon legacy PCI 10GbE for a single ASIC, Intel 82597EX. Intel
  543. quickly shifted to the long lived ixgbe family. If you have device
  544. ixgb in your kernel config file it must be removed.
  545. 20180501:
  546. The lmc(4) driver has been removed. This was a WAN interface
  547. card that was already reportedly rare in 2003, and had an ambiguous
  548. license. If you have device lmc in your kernel config file it must
  549. be removed.
  550. 20180413:
  551. Support for Arcnet networks has been removed. If you have device
  552. arcnet or device cm in your kernel config file they must be
  553. removed.
  554. 20180411:
  555. Support for FDDI networks has been removed. If you have device
  556. fddi or device fpa in your kernel config file they must be
  557. removed.
  558. 20180406:
  559. In addition to supporting RFC 3164 formatted messages, the
  560. syslogd(8) service is now capable of parsing RFC 5424 formatted
  561. log messages. The main benefit of using RFC 5424 is that clients
  562. may now send log messages with timestamps containing year numbers,
  563. microseconds and time zone offsets.
  564. Similarly, the syslog(3) C library function has been altered to
  565. send RFC 5424 formatted messages to the local system logging
  566. daemon. On systems using syslogd(8), this change should have no
  567. negative impact, as long as syslogd(8) and the C library are
  568. updated at the same time. On systems using a different system
  569. logging daemon, it may be necessary to make configuration
  570. adjustments, depending on the software used.
  571. When using syslog-ng, add the 'syslog-protocol' flag to local
  572. input sources to enable parsing of RFC 5424 formatted messages:
  573. source src {
  574. unix-dgram("/var/run/log" flags(syslog-protocol));
  575. }
  576. When using rsyslog, disable the 'SysSock.UseSpecialParser' option
  577. of the 'imuxsock' module to let messages be processed by the
  578. regular RFC 3164/5424 parsing pipeline:
  579. module(load="imuxsock" SysSock.UseSpecialParser="off")
  580. Do note that these changes only affect communication between local
  581. applications and syslogd(8). The format that syslogd(8) uses to
  582. store messages on disk or forward messages to other systems
  583. remains unchanged. syslogd(8) still uses RFC 3164 for these
  584. purposes. Options to customize this behaviour will be added in the
  585. future. Utilities that process log files stored in /var/log are
  586. thus expected to continue to function as before.
  587. __FreeBSD_version has been incremented to 1200061 to denote this
  588. change.
  589. 20180328:
  590. Support for token ring networks has been removed. If you
  591. have "device token" in your kernel config you should remove
  592. it. No device drivers supported token ring.
  593. 20180323:
  594. makefs was modified to be able to tag ISO9660 El Torito boot catalog
  595. entries as EFI instead of overloading the i386 tag as done previously.
  596. The amd64 mkisoimages.sh script used to build amd64 ISO images for
  597. release was updated to use this. This may mean that makefs must be
  598. updated before "make cdrom" can be run in the release directory. This
  599. should be as simple as:
  600. $ cd $SRCDIR/usr.sbin/makefs
  601. $ make depend all install
  602. 20180212:
  603. FreeBSD boot loader enhanced with Lua scripting. It's purely opt-in for
  604. now by building WITH_LOADER_LUA and WITHOUT_FORTH in /etc/src.conf.
  605. Co-existence for the transition period will come shortly. Booting is a
  606. complex environment and test coverage for Lua-enabled loaders has been
  607. thin, so it would be prudent to assume it might not work and make
  608. provisions for backup boot methods.
  609. 20180211:
  610. devmatch functionality has been turned on in devd. It will automatically
  611. load drivers for unattached devices. This may cause unexpected drivers
  612. to be loaded. Please report any problems to current@ and
  613. imp@freebsd.org.
  614. 20180114:
  615. Clang, llvm, lld, lldb, compiler-rt and libc++ have been upgraded to
  616. 6.0.0. Please see the 20141231 entry below for information about
  617. prerequisites and upgrading, if you are not already using clang 3.5.0
  618. or higher.
  619. 20180110:
  620. LLVM's lld linker is now used as the FreeBSD/amd64 bootstrap linker.
  621. This means it is used to link the kernel and userland libraries and
  622. executables, but is not yet installed as /usr/bin/ld by default.
  623. To revert to ld.bfd as the bootstrap linker, in /etc/src.conf set
  625. 20180110:
  626. On i386, pmtimer has been removed. Its functionality has been folded
  627. into apm. It was a no-op on ACPI in current for a while now (but was
  628. still needed on i386 in FreeBSD 11 and earlier). Users may need to
  629. remove it from kernel config files.
  630. 20180104:
  631. The use of RSS hash from the network card aka flowid has been
  632. disabled by default for lagg(4) as it's currently incompatible with
  633. the lacp and loadbalance protocols.
  634. This can be re-enabled by setting the following in loader.conf:
  635. net.link.lagg.default_use_flowid="1"
  636. 20180102:
  637. The SW_WATCHDOG option is no longer necessary to enable the
  638. hardclock-based software watchdog if no hardware watchdog is
  639. configured. As before, SW_WATCHDOG will cause the software
  640. watchdog to be enabled even if a hardware watchdog is configured.
  641. 20171215:
  642. r326887 fixes the issue described in the 20171214 UPDATING entry.
  643. r326888 flips the switch back to building GELI support always.
  644. 20171214:
  645. r362593 broke ZFS + GELI support for reasons unknown. However,
  646. it also broke ZFS support generally, so GELI has been turned off
  647. by default as the lesser evil in r326857. If you boot off ZFS and/or
  648. GELI, it might not be a good time to update.
  649. 20171125:
  650. PowerPC users must update loader(8) by rebuilding world before
  651. installing a new kernel, as the protocol connecting them has
  652. changed. Without the update, loader metadata will not be passed
  653. successfully to the kernel and users will have to enter their
  654. root partition at the kernel mountroot prompt to continue booting.
  655. Newer versions of loader can boot old kernels without issue.
  656. 20171110:
  657. The LOADER_FIREWIRE_SUPPORT build variable as been renamed to
  660. 20171106:
  661. The naive and non-compliant support of posix_fallocate(2) in ZFS
  662. has been removed as of r325320. The system call now returns EINVAL
  663. when used on a ZFS file. Although the new behavior complies with the
  664. standard, some consumers are not prepared to cope with it.
  665. One known victim is lld prior to r325420.
  666. 20171102:
  667. Building in a FreeBSD src checkout will automatically create object
  668. directories now rather than store files in the current directory if
  669. 'make obj' was not ran. Calling 'make obj' is no longer necessary.
  670. This feature can be disabled by setting WITHOUT_AUTO_OBJ=yes in
  671. /etc/src-env.conf (not /etc/src.conf), or passing the option in the
  672. environment.
  673. 20171101:
  674. The default MAKEOBJDIR has changed from /usr/obj/<srcdir> for native
  675. builds, and /usr/obj/<arch>/<srcdir> for cross-builds, to a unified
  676. /usr/obj/<srcdir>/<arch>. This behavior can be changed to the old
  677. format by setting WITHOUT_UNIFIED_OBJDIR=yes in /etc/src-env.conf,
  678. the environment, or with -DWITHOUT_UNIFIED_OBJDIR when building.
  679. The UNIFIED_OBJDIR option is a transitional feature that will be
  680. removed for 12.0 release; please migrate to the new format for any
  681. tools by looking up the OBJDIR used by 'make -V .OBJDIR' means rather
  682. than hardcoding paths.
  683. 20171028:
  684. The native-xtools target no longer installs the files by default to the
  685. OBJDIR. Use the native-xtools-install target with a DESTDIR to install
  686. to ${DESTDIR}/${NXTP} where NXTP defaults to /nxb-bin.
  687. 20171021:
  688. As part of the boot loader infrastructure cleanup, LOADER_*_SUPPORT
  689. options are changing from controlling the build if defined / undefined
  690. to controlling the build with explicit 'yes' or 'no' values. They will
  691. shift to WITH/WITHOUT options to match other options in the system.
  692. 20171010:
  693. libstand has turned into a private library for sys/boot use only.
  694. It is no longer supported as a public interface outside of sys/boot.
  695. 20171005:
  696. The arm port has split armv6 into armv6 and armv7. armv7 is now
  697. a valid TARGET_ARCH/MACHINE_ARCH setting. If you have an armv7 system
  698. and are running a kernel from before r324363, you will need to add
  699. MACHINE_ARCH=armv7 to 'make buildworld' to do a native build.
  700. 20171003:
  701. When building multiple kernels using KERNCONF, non-existent KERNCONF
  702. files will produce an error and buildkernel will fail. Previously
  703. missing KERNCONF files silently failed giving no indication as to
  704. why, only to subsequently discover during installkernel that the
  705. desired kernel was never built in the first place.
  706. 20170912:
  707. The default serial number format for CTL LUNs has changed. This will
  708. affect users who use /dev/diskid/* device nodes, or whose FibreChannel
  709. or iSCSI clients care about their LUNs' serial numbers. Users who
  710. require serial number stability should hardcode serial numbers in
  711. /etc/ctl.conf .
  712. 20170912:
  713. For 32-bit arm compiled for hard-float support, soft-floating point
  714. binaries now always get their shared libraries from
  715. LD_SOFT_LIBRARY_PATH (in the past, this was only used if
  716. /usr/libsoft also existed). Only users with a hard-float ld.so, but
  717. soft-float everything else should be affected.
  718. 20170826:
  719. The geli password typed at boot is now hidden. To restore the previous
  720. behavior, see geli(8) for configuration options.
  721. 20170825:
  722. Move PMTUD blackhole counters to TCPSTATS and remove them from bare
  723. sysctl values. Minor nit, but requires a rebuild of both world/kernel
  724. to complete.
  725. 20170814:
  726. "make check" behavior (made in ^/head@r295380) has been changed to
  727. execute from a limited sandbox, as opposed to executing from
  728. ${TESTSDIR}.
  729. Behavioral changes:
  730. - The "beforecheck" and "aftercheck" targets are now specified.
  731. - ${CHECKDIR} (added in commit noted above) has been removed.
  732. - Legacy behavior can be enabled by setting
  733. WITHOUT_MAKE_CHECK_USE_SANDBOX in src.conf(5) or the environment.
  734. If the limited sandbox mode is enabled, "make check" will execute
  735. "make distribution", then install, execute the tests, and clean up the
  736. sandbox if successful.
  737. The "make distribution" and "make install" targets are typically run as
  738. root to set appropriate permissions and ownership at installation time.
  739. The end-user should set "WITH_INSTALL_AS_USER" in src.conf(5) or the
  740. environment if executing "make check" with limited sandbox mode using
  741. an unprivileged user.
  742. 20170808:
  743. Since the switch to GPT disk labels, fsck for UFS/FFS has been
  744. unable to automatically find alternate superblocks. As of r322297,
  745. the information needed to find alternate superblocks has been
  746. moved to the end of the area reserved for the boot block.
  747. Filesystems created with a newfs of this vintage or later
  748. will create the recovery information. If you have a filesystem
  749. created prior to this change and wish to have a recovery block
  750. created for your filesystem, you can do so by running fsck in
  751. foreground mode (i.e., do not use the -p or -y options). As it
  752. starts, fsck will ask ``SAVE DATA TO FIND ALTERNATE SUPERBLOCKS''
  753. to which you should answer yes.
  754. 20170728:
  755. As of r321665, an NFSv4 server configuration that services
  756. Kerberos mounts or clients that do not support the uid/gid in
  757. owner/owner_group string capability, must explicitly enable
  758. the nfsuserd daemon by adding nfsuserd_enable="YES" to the
  759. machine's /etc/rc.conf file.
  760. 20170722:
  761. Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 5.0.0.
  762. Please see the 20141231 entry below for information about prerequisites
  763. and upgrading, if you are not already using clang 3.5.0 or higher.
  764. 20170701:
  765. WITHOUT_RCMDS is now the default. Set WITH_RCMDS if you need the
  766. r-commands (rlogin, rsh, etc.) to be built with the base system.
  767. 20170625:
  768. The FreeBSD/powerpc platform now uses a 64-bit type for time_t. This is
  769. a very major ABI incompatible change, so users of FreeBSD/powerpc must
  770. be careful when performing source upgrades. It is best to run
  771. 'make installworld' from an alternate root system, either a live
  772. CD/memory stick, or a temporary root partition. Additionally, all ports
  773. must be recompiled. powerpc64 is largely unaffected, except in the case
  774. of 32-bit compatibility. All 32-bit binaries will be affected.
  775. 20170623:
  776. Forward compatibility for the "ino64" project have been committed. This
  777. will allow most new binaries to run on older kernels in a limited
  778. fashion. This prevents many of the common foot-shooting actions in the
  779. upgrade as well as the limited ability to roll back the kernel across
  780. the ino64 upgrade. Complicated use cases may not work properly, though
  781. enough simpler ones work to allow recovery in most situations.
  782. 20170620:
  783. Switch back to the BSDL dtc (Device Tree Compiler). Set WITH_GPL_DTC
  784. if you require the GPL compiler.
  785. 20170618:
  786. The internal ABI used for communication between the NFS kernel modules
  787. was changed by r320085, so __FreeBSD_version was bumped to
  788. ensure all the NFS related modules are updated together.
  789. 20170617:
  790. The ABI of struct event was changed by extending the data
  791. member to 64bit and adding ext fields. For upgrade, same
  792. precautions as for the entry 20170523 "ino64" must be
  793. followed.
  794. 20170531:
  795. The GNU roff toolchain has been removed from base. To render manpages
  796. which are not supported by mandoc(1), man(1) can fallback on GNU roff
  797. from ports (and recommends to install it).
  798. To render roff(7) documents, consider using GNU roff from ports or the
  799. heirloom doctools roff toolchain from ports via pkg install groff or
  800. via pkg install heirloom-doctools.
  801. 20170524:
  802. The ath(4) and ath_hal(4) modules now build piecemeal to allow for
  803. smaller runtime footprint builds. This is useful for embedded systems
  804. which only require one chipset support.
  805. If you load it as a module, make sure this is in /boot/loader.conf:
  806. if_ath_load="YES"
  807. This will load the HAL, all chip/RF backends and if_ath_pci.
  808. If you have if_ath_pci in /boot/loader.conf, ensure it is after
  809. if_ath or it will not load any HAL chipset support.
  810. If you want to selectively load things (eg on ye cheape ARM/MIPS
  811. platforms where RAM is at a premium) you should:
  812. * load ath_hal
  813. * load the chip modules in question
  814. * load ath_rate, ath_dfs
  815. * load ath_main
  816. * load if_ath_pci and/or if_ath_ahb depending upon your particular
  817. bus bind type - this is where probe/attach is done.
  818. For further comments/feedback, poke adrian@ .
  819. 20170523:
  820. The "ino64" 64-bit inode project has been committed, which extends
  821. a number of types to 64 bits. Upgrading in place requires care and
  822. adherence to the documented upgrade procedure.
  823. If using a custom kernel configuration ensure that the
  824. COMPAT_FREEBSD11 option is included (as during the upgrade the
  825. system will be running the ino64 kernel with the existing world).
  826. For the safest in-place upgrade begin by removing previous build
  827. artifacts via "rm -rf /usr/obj/*". Then, carefully follow the full
  828. procedure documented below under the heading "To rebuild everything and
  829. install it on the current system." Specifically, a reboot is required
  830. after installing the new kernel before installing world. While an
  831. installworld normally works by accident from multiuser after rebooting
  832. the proper kernel, there are many cases where this will fail across this
  833. upgrade and installworld from single user is required.
  834. 20170424:
  835. The NATM framework including the en(4), fatm(4), hatm(4), and
  836. patm(4) devices has been removed. Consumers should plan a
  837. migration before the end-of-life date for FreeBSD 11.
  838. 20170420:
  839. GNU diff has been replaced by a BSD licensed diff. Some features of GNU
  840. diff has not been implemented, if those are needed a newer version of
  841. GNU diff is available via the diffutils package under the gdiff name.
  842. 20170413:
  843. As of r316810 for ipfilter, keep frags is no longer assumed when
  844. keep state is specified in a rule. r316810 aligns ipfilter with
  845. documentation in man pages separating keep frags from keep state.
  846. This allows keep state to be specified without forcing keep frags
  847. and allows keep frags to be specified independently of keep state.
  848. To maintain previous behaviour, also specify keep frags with
  849. keep state (as documented in ipf.conf.5).
  850. 20170407:
  851. arm64 builds now use the base system LLD 4.0.0 linker by default,
  852. instead of requiring that the aarch64-binutils port or package be
  853. installed. To continue using aarch64-binutils, set
  854. CROSS_BINUTILS_PREFIX=/usr/local/aarch64-freebsd/bin .
  855. 20170405:
  856. The UDP optimization in entry 20160818 that added the sysctl
  857. net.inet.udp.require_l2_bcast has been reverted. L2 broadcast
  858. packets will no longer be treated as L3 broadcast packets.
  859. 20170331:
  860. Binds and sends to the loopback addresses, IPv6 and IPv4, will now
  861. use any explicitly assigned loopback address available in the jail
  862. instead of using the first assigned address of the jail.
  863. 20170329:
  864. The ctl.ko module no longer implements the iSCSI target frontend:
  865. cfiscsi.ko does instead.
  866. If building cfiscsi.ko as a kernel module, the module can be loaded
  867. via one of the following methods:
  868. - `cfiscsi_load="YES"` in loader.conf(5).
  869. - Add `cfiscsi` to `$kld_list` in rc.conf(5).
  870. - ctladm(8)/ctld(8), when compiled with iSCSI support
  871. (`WITH_ISCSI=yes` in src.conf(5))
  872. Please see cfiscsi(4) for more details.
  873. 20170316:
  874. The mmcsd.ko module now additionally depends on geom_flashmap.ko.
  875. Also, mmc.ko and mmcsd.ko need to be a matching pair built from the
  876. same source (previously, the dependency of mmcsd.ko on mmc.ko was
  877. missing, but mmcsd.ko now will refuse to load if it is incompatible
  878. with mmc.ko).
  879. 20170315:
  880. The syntax of ipfw(8) named states was changed to avoid ambiguity.
  881. If you have used named states in the firewall rules, you need to modify
  882. them after installworld and before rebooting. Now named states must
  883. be prefixed with colon.
  884. 20170311:
  885. The old drm (sys/dev/drm/) drivers for i915 and radeon have been
  886. removed as the userland we provide cannot use them. The KMS version
  887. (sys/dev/drm2) supports the same hardware.
  888. 20170302:
  889. Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 4.0.0.
  890. Please see the 20141231 entry below for information about prerequisites
  891. and upgrading, if you are not already using clang 3.5.0 or higher.
  892. 20170221:
  893. The code that provides support for ZFS .zfs/ directory functionality
  894. has been reimplemented. It's not possible now to create a snapshot
  895. by mkdir under .zfs/snapshot/. That should be the only user visible
  896. change.
  897. 20170216:
  898. EISA bus support has been removed. The WITH_EISA option is no longer
  899. valid.
  900. 20170215:
  901. MCA bus support has been removed.
  902. 20170127:
  903. The WITH_LLD_AS_LD / WITHOUT_LLD_AS_LD build knobs have been renamed
  904. WITH_LLD_IS_LD / WITHOUT_LLD_IS_LD, for consistency with CLANG_IS_CC.
  905. 20170112:
  906. The EM_MULTIQUEUE kernel configuration option is deprecated now that
  907. the em(4) driver conforms to iflib specifications.
  908. 20170109:
  909. The igb(4), em(4) and lem(4) ethernet drivers are now implemented via
  910. IFLIB. If you have a custom kernel configuration that excludes em(4)
  911. but you use igb(4), you need to re-add em(4) to your custom
  912. configuration.
  913. 20161217:
  914. Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.9.1.
  915. Please see the 20141231 entry below for information about prerequisites
  916. and upgrading, if you are not already using clang 3.5.0 or higher.
  917. 20161124:
  918. Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.9.0.
  919. Please see the 20141231 entry below for information about prerequisites
  920. and upgrading, if you are not already using clang 3.5.0 or higher.
  921. 20161119:
  922. The layout of the pmap structure has changed for powerpc to put the pmap
  923. statistics at the front for all CPU variations. libkvm(3) and all tools
  924. that link against it need to be recompiled.
  925. 20161030:
  926. isl(4) and cyapa(4) drivers now require a new driver,
  927. chromebook_platform(4), to work properly on Chromebook-class hardware.
  928. On other types of hardware the drivers may need to be configured using
  929. device hints. Please see the corresponding manual pages for details.
  930. 20161017:
  931. The urtwn(4) driver was merged into rtwn(4) and now consists of
  932. rtwn(4) main module + rtwn_usb(4) and rtwn_pci(4) bus-specific
  933. parts.
  934. Also, firmware for RTL8188CE was renamed due to possible name
  935. conflict (rtwnrtl8192cU(B) -> rtwnrtl8192cE(B))
  936. 20161015:
  937. GNU rcs has been removed from base. It is available as packages:
  938. - rcs: Latest GPLv3 GNU rcs version.
  939. - rcs57: Copy of the latest version of GNU rcs (GPLv2) before it was
  940. removed from base.
  941. 20161008:
  942. Use of the cc_cdg, cc_chd, cc_hd, or cc_vegas congestion control
  943. modules now requires that the kernel configuration contain the
  944. TCP_HHOOK option. (This option is included in the GENERIC kernel.)
  945. 20161003:
  946. The WITHOUT_ELFCOPY_AS_OBJCOPY src.conf(5) knob has been retired.
  947. ELF Tool Chain's elfcopy is always installed as /usr/bin/objcopy.
  948. 20160924:
  949. Relocatable object files with the extension of .So have been renamed
  950. to use an extension of .pico instead. The purpose of this change is
  951. to avoid a name clash with shared libraries on case-insensitive file
  952. systems. On those file systems, foo.So is the same file as foo.so.
  953. 20160918:
  954. GNU rcs has been turned off by default. It can (temporarily) be built
  955. again by adding WITH_RCS knob in src.conf.
  956. Otherwise, GNU rcs is available from packages:
  957. - rcs: Latest GPLv3 GNU rcs version.
  958. - rcs57: Copy of the latest version of GNU rcs (GPLv2) from base.
  959. 20160918:
  960. The backup_uses_rcs functionality has been removed from rc.subr.
  961. 20160908:
  962. The queue(3) debugging macro, QUEUE_MACRO_DEBUG, has been split into
  963. two separate components, QUEUE_MACRO_DEBUG_TRACE and
  964. QUEUE_MACRO_DEBUG_TRASH. Define both for the original
  965. QUEUE_MACRO_DEBUG behavior.
  966. 20160824:
  967. r304787 changed some ioctl interfaces between the iSCSI userspace
  968. programs and the kernel. ctladm, ctld, iscsictl, and iscsid must be
  969. rebuilt to work with new kernels. __FreeBSD_version has been bumped
  970. to 1200005.
  971. 20160818:
  972. The UDP receive code has been updated to only treat incoming UDP
  973. packets that were addressed to an L2 broadcast address as L3
  974. broadcast packets. It is not expected that this will affect any
  975. standards-conforming UDP application. The new behaviour can be
  976. disabled by setting the sysctl net.inet.udp.require_l2_bcast to
  977. 0.
  978. 20160818:
  979. Remove the openbsd_poll system call.
  980. __FreeBSD_version has been bumped because of this.
  981. 20160708:
  982. The stable/11 branch has been created from head@r302406.
  983. 20160622:
  984. The libc stub for the pipe(2) system call has been replaced with
  985. a wrapper that calls the pipe2(2) system call and the pipe(2)
  986. system call is now only implemented by the kernels that include
  987. "options COMPAT_FREEBSD10" in their config file (this is the
  988. default). Users should ensure that this option is enabled in
  989. their kernel or upgrade userspace to r302092 before upgrading their
  990. kernel.
  991. 20160527:
  992. CAM will now strip leading spaces from SCSI disks' serial numbers.
  993. This will affect users who create UFS filesystems on SCSI disks using
  994. those disk's diskid device nodes. For example, if /etc/fstab
  995. previously contained a line like
  996. "/dev/diskid/DISK-%20%20%20%20%20%20%20ABCDEFG0123456", you should
  997. change it to "/dev/diskid/DISK-ABCDEFG0123456". Users of geom
  998. transforms like gmirror may also be affected. ZFS users should
  999. generally be fine.
  1000. 20160523:
  1001. The bitstring(3) API has been updated with new functionality and
  1002. improved performance. But it is binary-incompatible with the old API.
  1003. Objects built with the new headers may not be linked against objects
  1004. built with the old headers.
  1005. 20160520:
  1006. The brk and sbrk functions have been removed from libc on arm64.
  1007. Binutils from ports has been updated to not link to these
  1008. functions and should be updated to the latest version before
  1009. installing a new libc.
  1010. 20160517:
  1011. The armv6 port now defaults to hard float ABI. Limited support
  1012. for running both hardfloat and soft float on the same system
  1013. is available using the libraries installed with -DWITH_LIBSOFT.
  1014. This has only been tested as an upgrade path for installworld
  1015. and packages may fail or need manual intervention to run. New
  1016. packages will be needed.
  1017. To update an existing self-hosted armv6hf system, you must add
  1018. TARGET_ARCH=armv6 on the make command line for both the build
  1019. and the install steps.
  1020. 20160510:
  1021. Kernel modules compiled outside of a kernel build now default to
  1022. installing to /boot/modules instead of /boot/kernel. Many kernel
  1023. modules built this way (such as those in ports) already overrode
  1024. KMODDIR explicitly to install into /boot/modules. However,
  1025. manually building and installing a module from /sys/modules will
  1026. now install to /boot/modules instead of /boot/kernel.
  1027. 20160414:
  1028. The CAM I/O scheduler has been committed to the kernel. There should be
  1029. no user visible impact. This does enable NCQ Trim on ada SSDs. While the
  1030. list of known rogues that claim support for this but actually corrupt
  1031. data is believed to be complete, be on the lookout for data
  1032. corruption. The known rogue list is believed to be complete:
  1033. o Crucial MX100, M550 drives with MU01 firmware.
  1034. o Micron M510 and M550 drives with MU01 firmware.
  1035. o Micron M500 prior to MU07 firmware
  1036. o Samsung 830, 840, and 850 all firmwares
  1037. o FCCT M500 all firmwares
  1038. Crucial has firmware http://www.crucial.com/usa/en/support-ssd-firmware
  1039. with working NCQ TRIM. For Micron branded drives, see your sales rep for
  1040. updated firmware. Black listed drives will work correctly because these
  1041. drives work correctly so long as no NCQ TRIMs are sent to them. Given
  1042. this list is the same as found in Linux, it's believed there are no
  1043. other rogues in the market place. All other models from the above
  1044. vendors work.
  1045. To be safe, if you are at all concerned, you can quirk each of your
  1046. drives to prevent NCQ from being sent by setting:
  1047. kern.cam.ada.X.quirks="0x2"
  1048. in loader.conf. If the drive requires the 4k sector quirk, set the
  1049. quirks entry to 0x3.
  1050. 20160330:
  1051. The FAST_DEPEND build option has been removed and its functionality is
  1052. now the one true way. The old mkdep(1) style of 'make depend' has
  1053. been removed. See 20160311 for further details.
  1054. 20160317:
  1055. Resource range types have grown from unsigned long to uintmax_t. All
  1056. drivers, and anything using libdevinfo, need to be recompiled.
  1057. 20160311:
  1058. WITH_FAST_DEPEND is now enabled by default for in-tree and out-of-tree
  1059. builds. It no longer runs mkdep(1) during 'make depend', and the
  1060. 'make depend' stage can safely be skipped now as it is auto ran
  1061. when building 'make all' and will generate all SRCS and DPSRCS before
  1062. building anything else. Dependencies are gathered at compile time with
  1063. -MF flags kept in separate .depend files per object file. Users should
  1064. run 'make cleandepend' once if using -DNO_CLEAN to clean out older
  1065. stale .depend files.
  1066. 20160306:
  1067. On amd64, clang 3.8.0 can now insert sections of type AMD64_UNWIND into
  1068. kernel modules. Therefore, if you load any kernel modules at boot time,
  1069. please install the boot loaders after you install the kernel, but before
  1070. rebooting, e.g.:
  1071. make buildworld
  1072. make buildkernel KERNCONF=YOUR_KERNEL_HERE
  1073. make installkernel KERNCONF=YOUR_KERNEL_HERE
  1074. make -C sys/boot install
  1075. <reboot in single user>
  1076. Then follow the usual steps, described in the General Notes section,
  1077. below.
  1078. 20160305:
  1079. Clang, llvm, lldb and compiler-rt have been upgraded to 3.8.0. Please
  1080. see the 20141231 entry below for information about prerequisites and
  1081. upgrading, if you are not already using clang 3.5.0 or higher.
  1082. 20160301:
  1083. The AIO subsystem is now a standard part of the kernel. The
  1084. VFS_AIO kernel option and aio.ko kernel module have been removed.
  1085. Due to stability concerns, asynchronous I/O requests are only
  1086. permitted on sockets and raw disks by default. To enable
  1087. asynchronous I/O requests on all file types, set the
  1088. vfs.aio.enable_unsafe sysctl to a non-zero value.
  1089. 20160226:
  1090. The ELF object manipulation tool objcopy is now provided by the
  1091. ELF Tool Chain project rather than by GNU binutils. It should be a
  1092. drop-in replacement, with the addition of arm64 support. The
  1093. (temporary) src.conf knob WITHOUT_ELFCOPY_AS_OBJCOPY knob may be set
  1094. to obtain the GNU version if necessary.
  1095. 20160129:
  1096. Building ZFS pools on top of zvols is prohibited by default. That
  1097. feature has never worked safely; it's always been prone to deadlocks.
  1098. Using a zvol as the backing store for a VM guest's virtual disk will
  1099. still work, even if the guest is using ZFS. Legacy behavior can be
  1100. restored by setting vfs.zfs.vol.recursive=1.
  1101. 20160119:
  1102. The NONE and HPN patches has been removed from OpenSSH. They are
  1103. still available in the security/openssh-portable port.
  1104. 20160113:
  1105. With the addition of ypldap(8), a new _ypldap user is now required
  1106. during installworld. "mergemaster -p" can be used to add the user
  1107. prior to installworld, as documented in the handbook.
  1108. 20151216:
  1109. The tftp loader (pxeboot) now uses the option root-path directive. As a
  1110. consequence it no longer looks for a pxeboot.4th file on the tftp
  1111. server. Instead it uses the regular /boot infrastructure as with the
  1112. other loaders.
  1113. 20151211:
  1114. The code to start recording plug and play data into the modules has
  1115. been committed. While the old tools will properly build a new kernel,
  1116. a number of warnings about "unknown metadata record 4" will be produced
  1117. for an older kldxref. To avoid such warnings, make sure to rebuild
  1118. the kernel toolchain (or world). Make sure that you have r292078 or
  1119. later when trying to build 292077 or later before rebuilding.
  1120. 20151207:
  1121. Debug data files are now built by default with 'make buildworld' and
  1122. installed with 'make installworld'. This facilitates debugging but
  1123. requires more disk space both during the build and for the installed
  1124. world. Debug files may be disabled by setting WITHOUT_DEBUG_FILES=yes
  1125. in src.conf(5).
  1126. 20151130:
  1127. r291527 changed the internal interface between the nfsd.ko and
  1128. nfscommon.ko modules. As such, they must both be upgraded to-gether.
  1129. __FreeBSD_version has been bumped because of this.
  1130. 20151108:
  1131. Add support for unicode collation strings leads to a change of
  1132. order of files listed by ls(1) for example. To get back to the old
  1133. behaviour, set LC_COLLATE environment variable to "C".
  1134. Databases administrators will need to reindex their databases given
  1135. collation results will be different.
  1136. Due to a bug in install(1) it is recommended to remove the ancient
  1137. locales before running make installworld.
  1138. rm -rf /usr/share/locale/*
  1139. 20151030:
  1140. The OpenSSL has been upgraded to 1.0.2d. Any binaries requiring
  1141. libcrypto.so.7 or libssl.so.7 must be recompiled.
  1142. 20151020:
  1143. Qlogic 24xx/25xx firmware images were updated from 5.5.0 to 7.3.0.
  1144. Kernel modules isp_2400_multi and isp_2500_multi were removed and
  1145. should be replaced with isp_2400 and isp_2500 modules respectively.
  1146. 20151017:
  1147. The build previously allowed using 'make -n' to not recurse into
  1148. sub-directories while showing what commands would be executed, and
  1149. 'make -n -n' to recursively show commands. Now 'make -n' will recurse
  1150. and 'make -N' will not.
  1151. 20151012:
  1152. If you specify SENDMAIL_MC or SENDMAIL_CF in make.conf, mergemaster
  1153. and etcupdate will now use this file. A custom sendmail.cf is now
  1154. updated via this mechanism rather than via installworld. If you had
  1155. excluded sendmail.cf in mergemaster.rc or etcupdate.conf, you may
  1156. want to remove the exclusion or change it to "always install".
  1157. /etc/mail/sendmail.cf is now managed the same way regardless of
  1158. whether SENDMAIL_MC/SENDMAIL_CF is used. If you are not using
  1159. SENDMAIL_MC/SENDMAIL_CF there should be no change in behavior.
  1160. 20151011:
  1161. Compatibility shims for legacy ATA device names have been removed.
  1162. It includes ATA_STATIC_ID kernel option, kern.cam.ada.legacy_aliases
  1163. and kern.geom.raid.legacy_aliases loader tunables, kern.devalias.*
  1164. environment variables, /dev/ad* and /dev/ar* symbolic links.
  1165. 20151006:
  1166. Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.7.0.
  1167. Please see the 20141231 entry below for information about prerequisites
  1168. and upgrading, if you are not already using clang 3.5.0 or higher.
  1169. 20150924:
  1170. Kernel debug files have been moved to /usr/lib/debug/boot/kernel/,
  1171. and renamed from .symbols to .debug. This reduces the size requirements
  1172. on the boot partition or file system and provides consistency with
  1173. userland debug files.
  1174. When using the supported kernel installation method the
  1175. /usr/lib/debug/boot/kernel directory will be renamed (to kernel.old)
  1176. as is done with /boot/kernel.
  1177. Developers wishing to maintain the historical behavior of installing
  1178. debug files in /boot/kernel/ can set KERN_DEBUGDIR="" in src.conf(5).
  1179. 20150827:
  1180. The wireless drivers had undergone changes that remove the 'parent
  1181. interface' from the ifconfig -l output. The rc.d network scripts
  1182. used to check presence of a parent interface in the list, so old
  1183. scripts would fail to start wireless networking. Thus, etcupdate(3)
  1184. or mergemaster(8) run is required after kernel update, to update your
  1185. rc.d scripts in /etc.
  1186. 20150827:
  1187. pf no longer supports 'scrub fragment crop' or 'scrub fragment drop-ovl'
  1188. These configurations are now automatically interpreted as
  1189. 'scrub fragment reassemble'.
  1190. 20150817:
  1191. Kernel-loadable modules for the random(4) device are back. To use
  1192. them, the kernel must have
  1193. device random
  1194. options RANDOM_LOADABLE
  1195. kldload(8) can then be used to load random_fortuna.ko
  1196. or random_yarrow.ko. Please note that due to the indirect
  1197. function calls that the loadable modules need to provide,
  1198. the build-in variants will be slightly more efficient.
  1199. The random(4) kernel option RANDOM_DUMMY has been retired due to
  1200. unpopularity. It was not all that useful anyway.
  1201. 20150813:
  1202. The WITHOUT_ELFTOOLCHAIN_TOOLS src.conf(5) knob has been retired.
  1203. Control over building the ELF Tool Chain tools is now provided by
  1204. the WITHOUT_TOOLCHAIN knob.
  1205. 20150810:
  1206. The polarity of Pulse Per Second (PPS) capture events with the
  1207. uart(4) driver has been corrected. Prior to this change the PPS
  1208. "assert" event corresponded to the trailing edge of a positive PPS
  1209. pulse and the "clear" event was the leading edge of the next pulse.
  1210. As the width of a PPS pulse in a typical GPS receiver is on the
  1211. order of 1 millisecond, most users will not notice any significant
  1212. difference with this change.
  1213. Anyone who has compensated for the historical polarity reversal by
  1214. configuring a negative offset equal to the pulse width will need to
  1215. remove that workaround.
  1216. 20150809:
  1217. The default group assigned to /dev/dri entries has been changed
  1218. from 'wheel' to 'video' with the id of '44'. If you want to have
  1219. access to the dri devices please add yourself to the video group
  1220. with:
  1221. # pw groupmod video -m $USER
  1222. 20150806:
  1223. The menu.rc and loader.rc files will now be replaced during
  1224. upgrades. Please migrate local changes to menu.rc.local and
  1225. loader.rc.local instead.
  1226. 20150805:
  1227. GNU Binutils versions of addr2line, c++filt, nm, readelf, size,
  1228. strings and strip have been removed. The src.conf(5) knob
  1229. WITHOUT_ELFTOOLCHAIN_TOOLS no longer provides the binutils tools.
  1230. 20150728:
  1231. As ZFS requires more kernel stack pages than is the default on some
  1232. architectures e.g. i386, it now warns if KSTACK_PAGES is less than
  1233. ZFS_MIN_KSTACK_PAGES (which is 4 at the time of writing).
  1234. Please consider using 'options KSTACK_PAGES=X' where X is greater
  1235. than or equal to ZFS_MIN_KSTACK_PAGES i.e. 4 in such configurations.
  1236. 20150706:
  1237. sendmail has been updated to 8.15.2. Starting with FreeBSD 11.0
  1238. and sendmail 8.15, sendmail uses uncompressed IPv6 addresses by
  1239. default, i.e., they will not contain "::". For example, instead
  1240. of ::1, it will be 0:0:0:0:0:0:0:1. This permits a zero subnet
  1241. to have a more specific match, such as different map entries for
  1242. IPv6:0:0 vs IPv6:0. This change requires that configuration
  1243. data (including maps, files, classes, custom ruleset, etc.) must
  1244. use the same format, so make certain such configuration data is
  1245. upgrading. As a very simple check search for patterns like
  1246. 'IPv6:[0-9a-fA-F:]*::' and 'IPv6::'. To return to the old
  1247. behavior, set the m4 option confUSE_COMPRESSED_IPV6_ADDRESSES or
  1248. the cf option UseCompressedIPv6Addresses.
  1249. 20150630:
  1250. The default kernel entropy-processing algorithm is now
  1251. Fortuna, replacing Yarrow.
  1252. Assuming you have 'device random' in your kernel config
  1253. file, the configurations allow a kernel option to override
  1254. this default. You may choose *ONE* of:
  1255. options RANDOM_YARROW # Legacy /dev/random algorithm.
  1256. options RANDOM_DUMMY # Blocking-only driver.
  1257. If you have neither, you get Fortuna. For most people,
  1258. read no further, Fortuna will give a /dev/random that works
  1259. like it always used to, and the difference will be irrelevant.
  1260. If you remove 'device random', you get *NO* kernel-processed
  1261. entropy at all. This may be acceptable to folks building
  1262. embedded systems, but has complications. Carry on reading,
  1263. and it is assumed you know what you need.
  1264. *PLEASE* read random(4) and random(9) if you are in the
  1265. habit of tweaking kernel configs, and/or if you are a member
  1266. of the embedded community, wanting specific and not-usual
  1267. behaviour from your security subsystems.
  1268. NOTE!! If you use RANDOM_DUMMY and/or have no 'device
  1269. random', you will NOT have a functioning /dev/random, and
  1270. many cryptographic features will not work, including SSH.
  1271. You may also find strange behaviour from the random(3) set
  1272. of library functions, in particular sranddev(3), srandomdev(3)
  1273. and arc4random(3). The reason for this is that the KERN_ARND
  1274. sysctl only returns entropy if it thinks it has some to
  1275. share, and with RANDOM_DUMMY or no 'device random' this
  1276. will never happen.
  1277. 20150623:
  1278. An additional fix for the issue described in the 20150614 sendmail
  1279. entry below has been committed in revision 284717.
  1280. 20150616:
  1281. FreeBSD's old make (fmake) has been removed from the system. It is
  1282. available as the devel/fmake port or via pkg install fmake.
  1283. 20150615:
  1284. The fix for the issue described in the 20150614 sendmail entry
  1285. below has been committed in revision 284436. The work
  1286. around described in that entry is no longer needed unless the
  1287. default setting is overridden by a confDH_PARAMETERS configuration
  1288. setting of '5' or pointing to a 512 bit DH parameter file.
  1289. 20150614:
  1290. ALLOW_DEPRECATED_ATF_TOOLS/ATFFILE support has been removed from
  1291. atf.test.mk (included from bsd.test.mk). Please upgrade devel/atf
  1292. and devel/kyua to version 0.20+ and adjust any calling code to work
  1293. with Kyuafile and kyua.
  1294. 20150614:
  1295. The import of openssl to address the FreeBSD-SA-15:10.openssl
  1296. security advisory includes a change which rejects handshakes
  1297. with DH parameters below 768 bits. sendmail releases prior
  1298. to 8.15.2 (not yet released), defaulted to a 512 bit
  1299. DH parameter setting for client connections. To work around
  1300. this interoperability, sendmail can be configured to use a
  1301. 2048 bit DH parameter by:
  1302. 1. Edit /etc/mail/`hostname`.mc
  1303. 2. If a setting for confDH_PARAMETERS does not exist or
  1304. exists and is set to a string beginning with '5',
  1305. replace it with '2'.
  1306. 3. If a setting for confDH_PARAMETERS exists and is set to
  1307. a file path, create a new file with:
  1308. openssl dhparam -out /path/to/file 2048
  1309. 4. Rebuild the .cf file:
  1310. cd /etc/mail/; make; make install
  1311. 5. Restart sendmail:
  1312. cd /etc/mail/; make restart
  1313. A sendmail patch is coming, at which time this file will be
  1314. updated.
  1315. 20150604:
  1316. Generation of legacy formatted entries have been disabled by default
  1317. in pwd_mkdb(8), as all base system consumers of the legacy formatted
  1318. entries were converted to use the new format by default when the new,
  1319. machine independent format have been added and supported since FreeBSD
  1320. 5.x.
  1321. Please see the pwd_mkdb(8) manual page for further details.
  1322. 20150525:
  1323. Clang and llvm have been upgraded to 3.6.1 release. Please see the
  1324. 20141231 entry below for information about prerequisites and upgrading,
  1325. if you are not already using 3.5.0 or higher.
  1326. 20150521:
  1327. TI platform code switched to using vendor DTS files and this update
  1328. may break existing systems running on Beaglebone, Beaglebone Black,
  1329. and Pandaboard:
  1330. - dtb files should be regenerated/reinstalled. Filenames are the
  1331. same but content is different now
  1332. - GPIO addressing was changed, now each GPIO bank (32 pins per bank)
  1333. has its own /dev/gpiocX device, e.g. pin 121 on /dev/gpioc0 in old
  1334. addressing scheme is now pin 25 on /dev/gpioc3.
  1335. - Pandaboard: /etc/ttys should be updated, serial console device is
  1336. now /dev/ttyu2, not /dev/ttyu0
  1337. 20150501:
  1338. soelim(1) from gnu/usr.bin/groff has been replaced by usr.bin/soelim.
  1339. If you need the GNU extension from groff soelim(1), install groff
  1340. from package: pkg install groff, or via ports: textproc/groff.
  1341. 20150423:
  1342. chmod, chflags, chown and chgrp now affect symlinks in -R mode as
  1343. defined in symlink(7); previously symlinks were silently ignored.
  1344. 20150415:
  1345. The const qualifier has been removed from iconv(3) to comply with
  1346. POSIX. The ports tree is aware of this from r384038 onwards.
  1347. 20150416:
  1348. Libraries specified by LIBADD in Makefiles must have a corresponding
  1349. DPADD_<lib> variable to ensure correct dependencies. This is now
  1350. enforced in src.libnames.mk.
  1351. 20150324:
  1352. From legacy ata(4) driver was removed support for SATA controllers
  1353. supported by more functional drivers ahci(4), siis(4) and mvs(4).
  1354. Kernel modules ataahci and ataadaptec were removed completely,
  1355. replaced by ahci and mvs modules respectively.
  1356. 20150315:
  1357. Clang, llvm and lldb have been upgraded to 3.6.0 release. Please see
  1358. the 20141231 entry below for information about prerequisites and
  1359. upgrading, if you are not already using 3.5.0 or higher.
  1360. 20150307:
  1361. The 32-bit PowerPC kernel has been changed to a position-independent
  1362. executable. This can only be booted with a version of loader(8)
  1363. newer than January 31, 2015, so make sure to update both world and
  1364. kernel before rebooting.
  1365. 20150217:
  1366. If you are running a -CURRENT kernel since r273872 (Oct 30th, 2014),
  1367. but before r278950, the RNG was not seeded properly. Immediately
  1368. upgrade the kernel to r278950 or later and regenerate any keys (e.g.
  1369. ssh keys or openssl keys) that were generated w/ a kernel from that
  1370. range. This does not affect programs that directly used /dev/random
  1371. or /dev/urandom. All userland uses of arc4random(3) are affected.
  1372. 20150210:
  1373. The autofs(4) ABI was changed in order to restore binary compatibility
  1374. with 10.1-RELEASE. The automountd(8) daemon needs to be rebuilt to work
  1375. with the new kernel.
  1376. 20150131:
  1377. The powerpc64 kernel has been changed to a position-independent
  1378. executable. This can only be booted with a new version of loader(8),
  1379. so make sure to update both world and kernel before rebooting.
  1380. 20150118:
  1381. Clang and llvm have been upgraded to 3.5.1 release. This is a bugfix
  1382. only release, no new features have been added. Please see the 20141231
  1383. entry below for information about prerequisites and upgrading, if you
  1384. are not already using 3.5.0.
  1385. 20150107:
  1386. ELF tools addr2line, elfcopy (strip), nm, size, and strings are now
  1387. taken from the ELF Tool Chain project rather than GNU binutils. They
  1388. should be drop-in replacements, with the addition of arm64 support.
  1389. The WITHOUT_ELFTOOLCHAIN_TOOLS= knob may be used to obtain the
  1390. binutils tools, if necessary. See 20150805 for updated information.
  1391. 20150105:
  1392. The default Unbound configuration now enables remote control
  1393. using a local socket. Users who have already enabled the
  1394. local_unbound service should regenerate their configuration
  1395. by running "service local_unbound setup" as root.
  1396. 20150102:
  1397. The GNU texinfo and GNU info pages have been removed.
  1398. To be able to view GNU info pages please install texinfo from ports.
  1399. 20141231:
  1400. Clang, llvm and lldb have been upgraded to 3.5.0 release.
  1401. As of this release, a prerequisite for building clang, llvm and lldb is
  1402. a C++11 capable compiler and C++11 standard library. This means that to
  1403. be able to successfully build the cross-tools stage of buildworld, with
  1404. clang as the bootstrap compiler, your system compiler or cross compiler
  1405. should either be clang 3.3 or later, or gcc 4.8 or later, and your
  1406. system C++ library should be libc++, or libdstdc++ from gcc 4.8 or
  1407. later.
  1408. On any standard FreeBSD 10.x or 11.x installation, where clang and
  1409. libc++ are on by default (that is, on x86 or arm), this should work out
  1410. of the box.
  1411. On 9.x installations where clang is enabled by default, e.g. on x86 and
  1412. powerpc, libc++ will not be enabled by default, so libc++ should be
  1413. built (with clang) and installed first. If both clang and libc++ are
  1414. missing, build clang first, then use it to build libc++.
  1415. On 8.x and earlier installations, upgrade to 9.x first, and then follow
  1416. the instructions for 9.x above.
  1417. Sparc64 and mips users are unaffected, as they still use gcc 4.2.1 by
  1418. default, and do not build clang.
  1419. Many embedded systems are resource constrained, and will not be able to
  1420. build clang in a reasonable time, or in some cases at all. In those
  1421. cases, cross building bootable systems on amd64 is a workaround.
  1422. This new version of clang introduces a number of new warnings, of which
  1423. the following are most likely to appear:
  1424. -Wabsolute-value
  1425. This warns in two cases, for both C and C++:
  1426. * When the code is trying to take the absolute value of an unsigned
  1427. quantity, which is effectively a no-op, and almost never what was
  1428. intended. The code should be fixed, if at all possible. If you are
  1429. sure that the unsigned quantity can be safely cast to signed, without
  1430. loss of information or undefined behavior, you can add an explicit
  1431. cast, or disable the warning.
  1432. * When the code is trying to take an absolute value, but the called
  1433. abs() variant is for the wrong type, which can lead to truncation.
  1434. If you want to disable the warning instead of fixing the code, please
  1435. make sure that truncation will not occur, or it might lead to unwanted
  1436. side-effects.
  1437. -Wtautological-undefined-compare and
  1438. -Wundefined-bool-conversion
  1439. These warn when C++ code is trying to compare 'this' against NULL, while
  1440. 'this' should never be NULL in well-defined C++ code. However, there is
  1441. some legacy (pre C++11) code out there, which actively abuses this
  1442. feature, which was less strictly defined in previous C++ versions.
  1443. Squid and openjdk do this, for example. The warning can be turned off
  1444. for C++98 and earlier, but compiling the code in C++11 mode might result
  1445. in unexpected behavior; for example, the parts of the program that are
  1446. unreachable could be optimized away.
  1447. 20141222:
  1448. The old NFS client and server (kernel options NFSCLIENT, NFSSERVER)
  1449. kernel sources have been removed. The .h files remain, since some
  1450. utilities include them. This will need to be fixed later.
  1451. If "mount -t oldnfs ..." is attempted, it will fail.
  1452. If the "-o" option on mountd(8), nfsd(8) or nfsstat(1) is used,
  1453. the utilities will report errors.
  1454. 20141121:
  1455. The handling of LOCAL_LIB_DIRS has been altered to skip addition of
  1456. directories to top level SUBDIR variable when their parent
  1457. directory is included in LOCAL_DIRS. Users with build systems with
  1458. such hierarchies and without SUBDIR entries in the parent
  1459. directory Makefiles should add them or add the directories to
  1460. LOCAL_DIRS.
  1461. 20141109:
  1462. faith(4) and faithd(8) have been removed from the base system. Faith
  1463. has been obsolete for a very long time.
  1464. 20141104:
  1465. vt(4), the new console driver, is enabled by default. It brings
  1466. support for Unicode and double-width characters, as well as
  1467. support for UEFI and integration with the KMS kernel video
  1468. drivers.
  1469. You may need to update your console settings in /etc/rc.conf,
  1470. most probably the keymap. During boot, /etc/rc.d/syscons will
  1471. indicate what you need to do.
  1472. vt(4) still has issues and lacks some features compared to
  1473. syscons(4). See the wiki for up-to-date information:
  1474. https://wiki.freebsd.org/Newcons
  1475. If you want to keep using syscons(4), you can do so by adding
  1476. the following line to /boot/loader.conf:
  1477. kern.vty=sc
  1478. 20141102:
  1479. pjdfstest has been integrated into kyua as an opt-in test suite.
  1480. Please see share/doc/pjdfstest/README for more details on how to
  1481. execute it.
  1482. 20141009:
  1483. gperf has been removed from the base system for architectures
  1484. that use clang. Ports that require gperf will obtain it from the
  1485. devel/gperf port.
  1486. 20140923:
  1487. pjdfstest has been moved from tools/regression/pjdfstest to
  1488. contrib/pjdfstest .
  1489. 20140922:
  1490. At svn r271982, The default linux compat kernel ABI has been adjusted
  1491. to 2.6.18 in support of the linux-c6 compat ports infrastructure
  1492. update. If you wish to continue using the linux-f10 compat ports,
  1493. add compat.linux.osrelease=2.6.16 to your local sysctl.conf. Users are
  1494. encouraged to update their linux-compat packages to linux-c6 during
  1495. their next update cycle.
  1496. 20140729:
  1497. The ofwfb driver, used to provide a graphics console on PowerPC when
  1498. using vt(4), no longer allows mmap() of all physical memory. This
  1499. will prevent Xorg on PowerPC with some ATI graphics cards from
  1500. initializing properly unless x11-servers/xorg-server is updated to
  1501. 1.12.4_8 or newer.
  1502. 20140723:
  1503. The xdev targets have been converted to using TARGET and
  1504. TARGET_ARCH instead of XDEV and XDEV_ARCH.
  1505. 20140719:
  1506. The default unbound configuration has been modified to address
  1507. issues with reverse lookups on networks that use private
  1508. address ranges. If you use the local_unbound service, run
  1509. "service local_unbound setup" as root to regenerate your
  1510. configuration, then "service local_unbound reload" to load the
  1511. new configuration.
  1512. 20140709:
  1513. The GNU texinfo and GNU info pages are not built and installed
  1514. anymore, WITH_INFO knob has been added to allow to built and install
  1515. them again.
  1516. UPDATE: see 20150102 entry on texinfo's removal
  1517. 20140708:
  1518. The GNU readline library is now an INTERNALLIB - that is, it is
  1519. statically linked into consumers (GDB and variants) in the base
  1520. system, and the shared library is no longer installed. The
  1521. devel/readline port is available for third party software that
  1522. requires readline.
  1523. 20140702:
  1524. The Itanium architecture (ia64) has been removed from the list of
  1525. known architectures. This is the first step in the removal of the
  1526. architecture.
  1527. 20140701:
  1528. Commit r268115 has added NFSv4.1 server support, merged from
  1529. projects/nfsv4.1-server. Since this includes changes to the
  1530. internal interfaces between the NFS related modules, a full
  1531. build of the kernel and modules will be necessary.
  1532. __FreeBSD_version has been bumped.
  1533. 20140629:
  1534. The WITHOUT_VT_SUPPORT kernel config knob has been renamed
  1535. WITHOUT_VT. (The other _SUPPORT knobs have a consistent meaning
  1536. which differs from the behaviour controlled by this knob.)
  1537. 20140619:
  1538. Maximal length of the serial number in CTL was increased from 16 to
  1539. 64 chars, that breaks ABI. All CTL-related tools, such as ctladm
  1540. and ctld, need to be rebuilt to work with a new kernel.
  1541. 20140606:
  1542. The libatf-c and libatf-c++ major versions were downgraded to 0 and
  1543. 1 respectively to match the upstream numbers. They were out of
  1544. sync because, when they were originally added to FreeBSD, the
  1545. upstream versions were not respected. These libraries are private
  1546. and not yet built by default, so renumbering them should be a
  1547. non-issue. However, unclean source trees will yield broken test
  1548. programs once the operator executes "make delete-old-libs" after a
  1549. "make installworld".
  1550. Additionally, the atf-sh binary was made private by moving it into
  1551. /usr/libexec/. Already-built shell test programs will keep the
  1552. path to the old binary so they will break after "make delete-old"
  1553. is run.
  1554. If you are using WITH_TESTS=yes (not the default), wipe the object
  1555. tree and rebuild from scratch to prevent spurious test failures.
  1556. This is only needed once: the misnumbered libraries and misplaced
  1557. binaries have been added to OptionalObsoleteFiles.inc so they will
  1558. be removed during a clean upgrade.
  1559. 20140512:
  1560. Clang and llvm have been upgraded to 3.4.1 release.
  1561. 20140508:
  1562. We bogusly installed src.opts.mk in /usr/share/mk. This file should
  1563. be removed to avoid issues in the future (and has been added to
  1564. ObsoleteFiles.inc).
  1565. 20140505:
  1566. /etc/src.conf now affects only builds of the FreeBSD src tree. In the
  1567. past, it affected all builds that used the bsd.*.mk files. The old
  1568. behavior was a bug, but people may have relied upon it. To get this
  1569. behavior back, you can .include /etc/src.conf from /etc/make.conf
  1570. (which is still global and isn't changed). This also changes the
  1571. behavior of incremental builds inside the tree of individual
  1572. directories. Set MAKESYSPATH to ".../share/mk" to do that.
  1573. Although this has survived make universe and some upgrade scenarios,
  1574. other upgrade scenarios may have broken. At least one form of
  1575. temporary breakage was fixed with MAKESYSPATH settings for buildworld
  1576. as well... In cases where MAKESYSPATH isn't working with this
  1577. setting, you'll need to set it to the full path to your tree.
  1578. One side effect of all this cleaning up is that bsd.compiler.mk
  1579. is no longer implicitly included by bsd.own.mk. If you wish to
  1580. use COMPILER_TYPE, you must now explicitly include bsd.compiler.mk
  1581. as well.
  1582. 20140430:
  1583. The lindev device has been removed since /dev/full has been made a
  1584. standard device. __FreeBSD_version has been bumped.
  1585. 20140424:
  1586. The knob WITHOUT_VI was added to the base system, which controls
  1587. building ex(1), vi(1), etc. Older releases of FreeBSD required ex(1)
  1588. in order to reorder files share/termcap and didn't build ex(1) as a
  1589. build tool, so building/installing with WITH_VI is highly advised for
  1590. build hosts for older releases.
  1591. This issue has been fixed in stable/9 and stable/10 in r277022 and
  1592. r276991, respectively.
  1593. 20140418:
  1594. The YES_HESIOD knob has been removed. It has been obsolete for
  1595. a decade. Please move to using WITH_HESIOD instead or your builds
  1596. will silently lack HESIOD.
  1597. 20140405:
  1598. The uart(4) driver has been changed with respect to its handling
  1599. of the low-level console. Previously the uart(4) driver prevented
  1600. any process from changing the baudrate or the CLOCAL and HUPCL
  1601. control flags. By removing the restrictions, operators can make
  1602. changes to the serial console port without having to reboot.
  1603. However, when getty(8) is started on the serial device that is
  1604. associated with the low-level console, a misconfigured terminal
  1605. line in /etc/ttys will now have a real impact.
  1606. Before upgrading the kernel, make sure that /etc/ttys has the
  1607. serial console device configured as 3wire without baudrate to
  1608. preserve the previous behaviour. E.g:
  1609. ttyu0 "/usr/libexec/getty 3wire" vt100 on secure
  1610. 20140306:
  1611. Support for libwrap (TCP wrappers) in rpcbind was disabled by default
  1612. to improve performance. To re-enable it, if needed, run rpcbind
  1613. with command line option -W.
  1614. 20140226:
  1615. Switched back to the GPL dtc compiler due to updates in the upstream
  1616. dts files not being supported by the BSDL dtc compiler. You will need
  1617. to rebuild your kernel toolchain to pick up the new compiler. Core dumps
  1618. may result while building dtb files during a kernel build if you fail
  1619. to do so. Set WITHOUT_GPL_DTC if you require the BSDL compiler.
  1620. 20140216:
  1621. Clang and llvm have been upgraded to 3.4 release.
  1622. 20140216:
  1623. The nve(4) driver has been removed. Please use the nfe(4) driver
  1624. for NVIDIA nForce MCP Ethernet adapters instead.
  1625. 20140212:
  1626. An ABI incompatibility crept into the libc++ 3.4 import in r261283.
  1627. This could cause certain C++ applications using shared libraries built
  1628. against the previous version of libc++ to crash. The incompatibility
  1629. has now been fixed, but any C++ applications or shared libraries built
  1630. between r261283 and r261801 should be recompiled.
  1631. 20140204:
  1632. OpenSSH will now ignore errors caused by kernel lacking of Capsicum
  1633. capability mode support. Please note that enabling the feature in
  1634. kernel is still highly recommended.
  1635. 20140131:
  1636. OpenSSH is now built with sandbox support, and will use sandbox as
  1637. the default privilege separation method. This requires Capsicum
  1638. capability mode support in kernel.
  1639. 20140128:
  1640. The libelf and libdwarf libraries have been updated to newer
  1641. versions from upstream. Shared library version numbers for
  1642. these two libraries were bumped. Any ports or binaries
  1643. requiring these two libraries should be recompiled.
  1644. __FreeBSD_version is bumped to 1100006.
  1645. 20140110:
  1646. If a Makefile in a tests/ directory was auto-generating a Kyuafile
  1647. instead of providing an explicit one, this would prevent such
  1648. Makefile from providing its own Kyuafile in the future during
  1649. NO_CLEAN builds. This has been fixed in the Makefiles but manual
  1650. intervention is needed to clean an objdir if you use NO_CLEAN:
  1651. # find /usr/obj -name Kyuafile | xargs rm -f
  1652. 20131213:
  1653. The behavior of gss_pseudo_random() for the krb5 mechanism
  1654. has changed, for applications requesting a longer random string
  1655. than produced by the underlying enctype's pseudo-random() function.
  1656. In particular, the random string produced from a session key of
  1657. enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will
  1658. be different at the 17th octet and later, after this change.
  1659. The counter used in the PRF+ construction is now encoded as a
  1660. big-endian integer in accordance with RFC 4402.
  1661. __FreeBSD_version is bumped to 1100004.
  1662. 20131108:
  1663. The WITHOUT_ATF build knob has been removed and its functionality
  1664. has been subsumed into the more generic WITHOUT_TESTS. If you were
  1665. using the former to disable the build of the ATF libraries, you
  1666. should change your settings to use the latter.
  1667. 20131025:
  1668. The default version of mtree is nmtree which is obtained from
  1669. NetBSD. The output is generally the same, but may vary
  1670. slightly. If you found you need identical output adding
  1671. "-F freebsd9" to the command line should do the trick. For the
  1672. time being, the old mtree is available as fmtree.
  1673. 20131014:
  1674. libbsdyml has been renamed to libyaml and moved to /usr/lib/private.
  1675. This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg
  1676. 1.1.4_8 and verify bsdyml not linked in, before running "make
  1677. delete-old-libs":
  1678. # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean
  1679. or
  1680. # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml
  1681. 20131010:
  1682. The stable/10 branch has been created in subversion from head
  1683. revision r256279.
  1685. General Notes
  1686. -------------
  1687. Sometimes, obscure build problems are the result of environment
  1688. poisoning. This can happen because the make utility reads its
  1689. environment when searching for values for global variables. To run
  1690. your build attempts in an "environmental clean room", prefix all make
  1691. commands with 'env -i '. See the env(1) manual page for more details.
  1692. Occasionally a build failure will occur with "make -j" due to a race
  1693. condition. If this happens try building again without -j, and please
  1694. report a bug if it happens consistently.
  1695. When upgrading from one major version to another it is generally best to
  1696. upgrade to the latest code in the currently installed branch first, then
  1697. do an upgrade to the new branch. This is the best-tested upgrade path,
  1698. and has the highest probability of being successful. Please try this
  1699. approach if you encounter problems with a major version upgrade. Since
  1700. the stable 4.x branch point, one has generally been able to upgrade from
  1701. anywhere in the most recent stable branch to head / current (or even the
  1702. last couple of stable branches). See the top of this file when there's
  1703. an exception.
  1704. The update process will emit an error on an attempt to perform a build
  1705. or install from a FreeBSD version below the earliest supported version.
  1706. When updating from an older version the update should be performed one
  1707. major release at a time, including running `make delete-old` at each
  1708. step.
  1709. When upgrading a live system, having a root shell around before
  1710. installing anything can help undo problems. Not having a root shell
  1711. around can lead to problems if pam has changed too much from your
  1712. starting point to allow continued authentication after the upgrade.
  1713. This file should be read as a log of events. When a later event changes
  1714. information of a prior event, the prior event should not be deleted.
  1715. Instead, a pointer to the entry with the new information should be
  1716. placed in the old entry. Readers of this file should also sanity check
  1717. older entries before relying on them blindly. Authors of new entries
  1718. should write them with this in mind.
  1719. ZFS notes
  1720. ---------
  1721. When upgrading the boot ZFS pool to a new version, always follow
  1722. these two steps:
  1723. 1.) recompile and reinstall the ZFS boot loader and boot block
  1724. (this is part of "make buildworld" and "make installworld")
  1725. 2.) update the ZFS boot block on your boot drive
  1726. The following example updates the ZFS boot block on the first
  1727. partition (freebsd-boot) of a GPT partitioned drive ada0:
  1728. "gpart bootcode -p /boot/gptzfsboot -i 1 ada0"
  1729. Non-boot pools do not need these updates.
  1730. To build a kernel
  1731. -----------------
  1732. If you are updating from a prior version of FreeBSD (even one just
  1733. a few days old), you should follow this procedure. It is the most
  1734. failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
  1735. make kernel-toolchain
  1738. To test a kernel once
  1739. ---------------------
  1740. If you just want to boot a kernel once (because you are not sure
  1741. if it works, or if you want to boot a known bad kernel to provide
  1742. debugging information) run
  1743. make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
  1744. nextboot -k testkernel
  1745. To rebuild everything and install it on the current system.
  1746. -----------------------------------------------------------
  1747. # Note: sometimes if you are running current you gotta do more than
  1748. # is listed here if you are upgrading from a really old current.
  1749. <make sure you have good level 0 dumps>
  1750. make buildworld
  1751. make buildkernel KERNCONF=YOUR_KERNEL_HERE
  1752. make installkernel KERNCONF=YOUR_KERNEL_HERE
  1753. [1]
  1754. <reboot in single user> [3]
  1755. mergemaster -Fp [5]
  1756. make installworld
  1757. mergemaster -Fi [4]
  1758. make delete-old [6]
  1759. <reboot>
  1760. To cross-install current onto a separate partition
  1761. --------------------------------------------------
  1762. # In this approach we use a separate partition to hold
  1763. # current's root, 'usr', and 'var' directories. A partition
  1764. # holding "/", "/usr" and "/var" should be about 2GB in
  1765. # size.
  1766. <make sure you have good level 0 dumps>
  1767. <boot into -stable>
  1768. make buildworld
  1769. make buildkernel KERNCONF=YOUR_KERNEL_HERE
  1770. <maybe newfs current's root partition>
  1771. <mount current's root partition on directory ${CURRENT_ROOT}>
  1772. make installworld DESTDIR=${CURRENT_ROOT} -DDB_FROM_SRC
  1773. make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
  1775. cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
  1776. <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
  1777. <reboot into current>
  1778. <do a "native" rebuild/install as described in the previous section>
  1779. <maybe install compatibility libraries from ports/misc/compat*>
  1780. <reboot>
  1781. To upgrade in-place from stable to current
  1782. ----------------------------------------------
  1783. <make sure you have good level 0 dumps>
  1784. make buildworld [9]
  1785. make buildkernel KERNCONF=YOUR_KERNEL_HERE [8]
  1786. make installkernel KERNCONF=YOUR_KERNEL_HERE
  1787. [1]
  1788. <reboot in single user> [3]
  1789. mergemaster -Fp [5]
  1790. make installworld
  1791. mergemaster -Fi [4]
  1792. make delete-old [6]
  1793. <reboot>
  1794. Make sure that you've read the UPDATING file to understand the
  1795. tweaks to various things you need. At this point in the life
  1796. cycle of current, things change often and you are on your own
  1797. to cope. The defaults can also change, so please read ALL of
  1798. the UPDATING entries.
  1799. Also, if you are tracking -current, you must be subscribed to
  1800. freebsd-current@freebsd.org. Make sure that before you update
  1801. your sources that you have read and understood all the recent
  1802. messages there. If in doubt, please track -stable which has
  1803. much fewer pitfalls.
  1804. [1] If you have third party modules, such as vmware, you
  1805. should disable them at this point so they don't crash your
  1806. system on reboot.
  1807. [3] From the bootblocks, boot -s, and then do
  1808. fsck -p
  1809. mount -u /
  1810. mount -a
  1811. sh /etc/rc.d/zfs start # mount zfs filesystem, if needed
  1812. cd src # full path to source
  1813. adjkerntz -i # if CMOS is wall time
  1814. Also, when doing a major release upgrade, it is required that
  1815. you boot into single user mode to do the installworld.
  1816. [4] Note: This step is non-optional. Failure to do this step
  1817. can result in a significant reduction in the functionality of the
  1818. system. Attempting to do it by hand is not recommended and those
  1819. that pursue this avenue should read this file carefully, as well
  1820. as the archives of freebsd-current and freebsd-hackers mailing lists
  1821. for potential gotchas. The -U option is also useful to consider.
  1822. See mergemaster(8) for more information.
  1823. [5] Usually this step is a no-op. However, from time to time
  1824. you may need to do this if you get unknown user in the following
  1825. step. It never hurts to do it all the time. You may need to
  1826. install a new mergemaster (cd src/usr.sbin/mergemaster && make
  1827. install) after the buildworld before this step if you last updated
  1828. from current before 20130425 or from -stable before 20130430.
  1829. [6] This only deletes old files and directories. Old libraries
  1830. can be deleted by "make delete-old-libs", but you have to make
  1831. sure that no program is using those libraries anymore.
  1832. [8] The new kernel must be able to run existing binaries used by an
  1833. installworld. When upgrading across major versions, the new kernel's
  1834. configuration must include the correct COMPAT_FREEBSD<n> option for
  1835. existing binaries (e.g. COMPAT_FREEBSD11 to run 11.x binaries). Failure
  1836. to do so may leave you with a system that is hard to boot to recover. A
  1837. GENERIC kernel will include suitable compatibility options to run
  1838. binaries from older branches. Note that the ability to run binaries
  1839. from unsupported branches is not guaranteed.
  1840. Make sure that you merge any new devices from GENERIC since the
  1841. last time you updated your kernel config file. Options also
  1842. change over time, so you may need to adjust your custom kernels
  1843. for these as well.
  1844. [9] If CPUTYPE is defined in your /etc/make.conf, make sure to use the
  1845. "?=" instead of the "=" assignment operator, so that buildworld can
  1846. override the CPUTYPE if it needs to.
  1847. MAKEOBJDIRPREFIX must be defined in an environment variable, and
  1848. not on the command line, or in /etc/make.conf. buildworld will
  1849. warn if it is improperly defined.
  1850. FORMAT:
  1851. This file contains a list, in reverse chronological order, of major
  1852. breakages in tracking -current. It is not guaranteed to be a complete
  1853. list of such breakages, and only contains entries since September 23, 2011.
  1854. If you need to see UPDATING entries from before that date, you will need
  1855. to fetch an UPDATING file from an older FreeBSD release.
  1856. Copyright information:
  1857. Copyright 1998-2009 M. Warner Losh <imp@FreeBSD.org>
  1858. Redistribution, publication, translation and use, with or without
  1859. modification, in full or in part, in any form or format of this
  1860. document are permitted without further permission from the author.
  1872. Contact Warner Losh if you have any questions about your use of
  1873. this document.
  1874. $FreeBSD$