UPDATING revision 316423
1Updating Information for FreeBSD current users. 2 3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>. 4See end of file for further details. For commonly done items, please see the 5COMMON ITEMS: section later in the file. These instructions assume that you 6basically know what you are doing. If not, then please consult the FreeBSD 7handbook: 8 9 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html 10 11Items affecting the ports and packages system can be found in 12/usr/ports/UPDATING. Please read that file before running portupgrade. 13 14NOTE: FreeBSD has switched from gcc to clang. If you have trouble bootstrapping 15from older versions of FreeBSD, try WITHOUT_CLANG and WITH_GCC to bootstrap to 16the tip of head, and then rebuild without this option. The bootstrap process 17from older version of current across the gcc/clang cutover is a bit fragile. 18 1920170402: 20 Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 4.0.0. 21 Please see the 20141231 entry below for information about prerequisites 22 and upgrading, if you are not already using clang 3.5.0 or higher. 23 2420170323: 25 The code that provides support for ZFS .zfs/ directory functionality 26 has been reimplemented. It's not possible now to create a snapshot 27 by mkdir under .zfs/snapshot/. That should be the only user visible 28 change. 29 3020170319: 31 Many changes in the IPsec code have been merged from the FreeBSD-CURRENT 32 branch. The IPSEC_FILTERTUNNEL kernel option is removed in favour of 33 corresponding sysctl. The IPSEC_NAT_T kernel option is also removed, 34 and now NAT-T is supported by default. Security associations now use 35 the single namespace for SPI allocation, so if you use several manually 36 configured security associations with the same SPI, this configuration 37 needs modification. 38 3920161217: 40 Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.9.1. 41 Please see the 20141231 entry below for information about prerequisites 42 and upgrading, if you are not already using clang 3.5.0 or higher. 43 4420161124: 45 Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.9.0. 46 Please see the 20141231 entry below for information about prerequisites 47 and upgrading, if you are not already using clang 3.5.0 or higher. 48 4920161119: 50 The layout of the pmap structure has changed for powerpc to put the pmap 51 statistics at the front for all CPU variations. libkvm(3) and all tools 52 that link against it need to be recompiled. 53 5420161030: 55 isl(4) and cyapa(4) drivers now require a new driver, 56 chromebook_platform(4), to work properly on Chromebook-class hardware. 57 On other types of hardware the drivers may need to be configured using 58 device hints. Please see the corresponding manual pages for details. 59 6020161210: 61 Relocatable object files with the extension of .So have been renamed 62 to use an extension of .pico instead. The purpose of this change is 63 to avoid a name clash with shared libraries on case-insensitive file 64 systems. On those file systems, foo.So is the same file as foo.so. 65 6620160622: 67 The libc stub for the pipe(2) system call has been replaced with 68 a wrapper that calls the pipe2(2) system call and the pipe(2) 69 system call is now only implemented by the kernels that include 70 "options COMPAT_FREEBSD10" in their config file (this is the 71 default). Users should ensure that this option is enabled in 72 their kernel or upgrade userspace to r302092 before upgrading their 73 kernel. 74 7520160527: 76 CAM will now strip leading spaces from SCSI disks' serial numbers. 77 This will effect users who create UFS filesystems on SCSI disks using 78 those disk's diskid device nodes. For example, if /etc/fstab 79 previously contained a line like 80 "/dev/diskid/DISK-%20%20%20%20%20%20%20ABCDEFG0123456", you should 81 change it to "/dev/diskid/DISK-ABCDEFG0123456". Users of geom 82 transforms like gmirror may also be affected. ZFS users should 83 generally be fine. 84 8520160523: 86 The bitstring(3) API has been updated with new functionality and 87 improved performance. But it is binary-incompatible with the old API. 88 Objects built with the new headers may not be linked against objects 89 built with the old headers. 90 9120160520: 92 The brk and sbrk functions have been removed from libc on arm64. 93 Binutils from ports has been updated to not link to these 94 functions and should be updated to the latest version before 95 installing a new libc. 96 9720160517: 98 The armv6 port now defaults to hard float ABI. Limited support 99 for running both hardfloat and soft float on the same system 100 is available using the libraries installed with -DWITH_LIBSOFT. 101 This has only been tested as an upgrade path for installworld 102 and packages may fail or need manual intervention to run. New 103 packages will be needed. 104 105 To update an existing self-hosted armv6hf system, you must add 106 TARGET_ARCH=armv6 on the make command line for both the build 107 and the install steps. 108 10920160510: 110 Kernel modules compiled outside of a kernel build now default to 111 installing to /boot/modules instead of /boot/kernel. Many kernel 112 modules built this way (such as those in ports) already overrode 113 KMODDIR explicitly to install into /boot/modules. However, 114 manually building and installing a module from /sys/modules will 115 now install to /boot/modules instead of /boot/kernel. 116 11720160414: 118 The CAM I/O scheduler has been committed to the kernel. There should be 119 no user visible impact. This does enable NCQ Trim on ada SSDs. While the 120 list of known rogues that claim support for this but actually corrupt 121 data is believed to be complete, be on the lookout for data 122 corruption. The known rogue list is believed to be complete: 123 124 o Crucial MX100, M550 drives with MU01 firmware. 125 o Micron M510 and M550 drives with MU01 firmware. 126 o Micron M500 prior to MU07 firmware 127 o Samsung 830, 840, and 850 all firmwares 128 o FCCT M500 all firmwares 129 130 Crucial has firmware http://www.crucial.com/usa/en/support-ssd-firmware 131 with working NCQ TRIM. For Micron branded drives, see your sales rep for 132 updated firmware. Black listed drives will work correctly because these 133 drives work correctly so long as no NCQ TRIMs are sent to them. Given 134 this list is the same as found in Linux, it's believed there are no 135 other rogues in the market place. All other models from the above 136 vendors work. 137 138 To be safe, if you are at all concerned, you can quirk each of your 139 drives to prevent NCQ from being sent by setting: 140 kern.cam.ada.X.quirks="0x2" 141 in loader.conf. If the drive requires the 4k sector quirk, set the 142 quirks entry to 0x3. 143 14420160330: 145 The FAST_DEPEND build option has been removed and its functionality is 146 now the one true way. The old mkdep(1) style of 'make depend' has 147 been removed. See 20160311 for further details. 148 14920160317: 150 Resource range types have grown from unsigned long to uintmax_t. All 151 drivers, and anything using libdevinfo, need to be recompiled. 152 15320160311: 154 WITH_FAST_DEPEND is now enabled by default for in-tree and out-of-tree 155 builds. It no longer runs mkdep(1) during 'make depend', and the 156 'make depend' stage can safely be skipped now as it is auto ran 157 when building 'make all' and will generate all SRCS and DPSRCS before 158 building anything else. Dependencies are gathered at compile time with 159 -MF flags kept in separate .depend files per object file. Users should 160 run 'make cleandepend' once if using -DNO_CLEAN to clean out older 161 stale .depend files. 162 16320160306: 164 On amd64, clang 3.8.0 can now insert sections of type AMD64_UNWIND into 165 kernel modules. Therefore, if you load any kernel modules at boot time, 166 please install the boot loaders after you install the kernel, but before 167 rebooting, e.g.: 168 169 make buildworld 170 make kernel KERNCONF=YOUR_KERNEL_HERE 171 make -C sys/boot install 172 <reboot in single user> 173 174 Then follow the usual steps, described in the General Notes section, 175 below. 176 17720160305: 178 Clang, llvm, lldb and compiler-rt have been upgraded to 3.8.0. Please 179 see the 20141231 entry below for information about prerequisites and 180 upgrading, if you are not already using clang 3.5.0 or higher. 181 18220160301: 183 The AIO subsystem is now a standard part of the kernel. The 184 VFS_AIO kernel option and aio.ko kernel module have been removed. 185 Due to stability concerns, asynchronous I/O requests are only 186 permitted on sockets and raw disks by default. To enable 187 asynchronous I/O requests on all file types, set the 188 vfs.aio.enable_unsafe sysctl to a non-zero value. 189 19020160226: 191 The ELF object manipulation tool objcopy is now provided by the 192 ELF Tool Chain project rather than by GNU binutils. It should be a 193 drop-in replacement, with the addition of arm64 support. The 194 (temporary) src.conf knob WITHOUT_ELFCOPY_AS_OBJCOPY knob may be set 195 to obtain the GNU version if necessary. 196 19720160129: 198 Building ZFS pools on top of zvols is prohibited by default. That 199 feature has never worked safely; it's always been prone to deadlocks. 200 Using a zvol as the backing store for a VM guest's virtual disk will 201 still work, even if the guest is using ZFS. Legacy behavior can be 202 restored by setting vfs.zfs.vol.recursive=1. 203 20420160119: 205 The NONE and HPN patches has been removed from OpenSSH. They are 206 still available in the security/openssh-portable port. 207 20820160113: 209 With the addition of ypldap(8), a new _ypldap user is now required 210 during installworld. "mergemaster -p" can be used to add the user 211 prior to installworld, as documented in the handbook. 212 21320151216: 214 The tftp loader (pxeboot) now uses the option root-path directive. As a 215 consequence it no longer looks for a pxeboot.4th file on the tftp 216 server. Instead it uses the regular /boot infrastructure as with the 217 other loaders. 218 21920151211: 220 The code to start recording plug and play data into the modules has 221 been committed. While the old tools will properly build a new kernel, 222 a number of warnings about "unknown metadata record 4" will be produced 223 for an older kldxref. To avoid such warnings, make sure to rebuild 224 the kernel toolchain (or world). Make sure that you have r292078 or 225 later when trying to build 292077 or later before rebuilding. 226 22720151207: 228 Debug data files are now built by default with 'make buildworld' and 229 installed with 'make installworld'. This facilitates debugging but 230 requires more disk space both during the build and for the installed 231 world. Debug files may be disabled by setting WITHOUT_DEBUG_FILES=yes 232 in src.conf(5). 233 23420151130: 235 r291527 changed the internal interface between the nfsd.ko and 236 nfscommon.ko modules. As such, they must both be upgraded to-gether. 237 __FreeBSD_version has been bumped because of this. 238 23920151108: 240 Add support for unicode collation strings leads to a change of 241 order of files listed by ls(1) for example. To get back to the old 242 behaviour, set LC_COLLATE environment variable to "C". 243 244 Databases administrators will need to reindex their databases given 245 collation results will be different. 246 247 Due to a bug in install(1) it is recommended to remove the ancient 248 locales before running make installworld. 249 250 rm -rf /usr/share/locale/* 251 25220151030: 253 The OpenSSL has been upgraded to 1.0.2d. Any binaries requiring 254 libcrypto.so.7 or libssl.so.7 must be recompiled. 255 25620151020: 257 Qlogic 24xx/25xx firmware images were updated from 5.5.0 to 7.3.0. 258 Kernel modules isp_2400_multi and isp_2500_multi were removed and 259 should be replaced with isp_2400 and isp_2500 modules respectively. 260 26120151017: 262 The build previously allowed using 'make -n' to not recurse into 263 sub-directories while showing what commands would be executed, and 264 'make -n -n' to recursively show commands. Now 'make -n' will recurse 265 and 'make -N' will not. 266 26720151012: 268 If you specify SENDMAIL_MC or SENDMAIL_CF in make.conf, mergemaster 269 and etcupdate will now use this file. A custom sendmail.cf is now 270 updated via this mechanism rather than via installworld. If you had 271 excluded sendmail.cf in mergemaster.rc or etcupdate.conf, you may 272 want to remove the exclusion or change it to "always install". 273 /etc/mail/sendmail.cf is now managed the same way regardless of 274 whether SENDMAIL_MC/SENDMAIL_CF is used. If you are not using 275 SENDMAIL_MC/SENDMAIL_CF there should be no change in behavior. 276 27720151011: 278 Compatibility shims for legacy ATA device names have been removed. 279 It includes ATA_STATIC_ID kernel option, kern.cam.ada.legacy_aliases 280 and kern.geom.raid.legacy_aliases loader tunables, kern.devalias.* 281 environment variables, /dev/ad* and /dev/ar* symbolic links. 282 28320151006: 284 Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.7.0. 285 Please see the 20141231 entry below for information about prerequisites 286 and upgrading, if you are not already using clang 3.5.0 or higher. 287 28820150924: 289 Kernel debug files have been moved to /usr/lib/debug/boot/kernel/, 290 and renamed from .symbols to .debug. This reduces the size requirements 291 on the boot partition or file system and provides consistency with 292 userland debug files. 293 294 When using the supported kernel installation method the 295 /usr/lib/debug/boot/kernel directory will be renamed (to kernel.old) 296 as is done with /boot/kernel. 297 298 Developers wishing to maintain the historical behavior of installing 299 debug files in /boot/kernel/ can set KERN_DEBUGDIR="" in src.conf(5). 300 30120150827: 302 The wireless drivers had undergone changes that remove the 'parent 303 interface' from the ifconfig -l output. The rc.d network scripts 304 used to check presence of a parent interface in the list, so old 305 scripts would fail to start wireless networking. Thus, etcupdate(3) 306 or mergemaster(8) run is required after kernel update, to update your 307 rc.d scripts in /etc. 308 30920150827: 310 pf no longer supports 'scrub fragment crop' or 'scrub fragment drop-ovl' 311 These configurations are now automatically interpreted as 312 'scrub fragment reassemble'. 313 31420150817: 315 Kernel-loadable modules for the random(4) device are back. To use 316 them, the kernel must have 317 318 device random 319 options RANDOM_LOADABLE 320 321 kldload(8) can then be used to load random_fortuna.ko 322 or random_yarrow.ko. Please note that due to the indirect 323 function calls that the loadable modules need to provide, 324 the build-in variants will be slightly more efficient. 325 326 The random(4) kernel option RANDOM_DUMMY has been retired due to 327 unpopularity. It was not all that useful anyway. 328 32920150813: 330 The WITHOUT_ELFTOOLCHAIN_TOOLS src.conf(5) knob has been retired. 331 Control over building the ELF Tool Chain tools is now provided by 332 the WITHOUT_TOOLCHAIN knob. 333 33420150810: 335 The polarity of Pulse Per Second (PPS) capture events with the 336 uart(4) driver has been corrected. Prior to this change the PPS 337 "assert" event corresponded to the trailing edge of a positive PPS 338 pulse and the "clear" event was the leading edge of the next pulse. 339 340 As the width of a PPS pulse in a typical GPS receiver is on the 341 order of 1 millisecond, most users will not notice any significant 342 difference with this change. 343 344 Anyone who has compensated for the historical polarity reversal by 345 configuring a negative offset equal to the pulse width will need to 346 remove that workaround. 347 34820150809: 349 The default group assigned to /dev/dri entries has been changed 350 from 'wheel' to 'video' with the id of '44'. If you want to have 351 access to the dri devices please add yourself to the video group 352 with: 353 354 # pw groupmod video -m $USER 355 35620150806: 357 The menu.rc and loader.rc files will now be replaced during 358 upgrades. Please migrate local changes to menu.rc.local and 359 loader.rc.local instead. 360 36120150805: 362 GNU Binutils versions of addr2line, c++filt, nm, readelf, size, 363 strings and strip have been removed. The src.conf(5) knob 364 WITHOUT_ELFTOOLCHAIN_TOOLS no longer provides the binutils tools. 365 36620150728: 367 As ZFS requires more kernel stack pages than is the default on some 368 architectures e.g. i386, it now warns if KSTACK_PAGES is less than 369 ZFS_MIN_KSTACK_PAGES (which is 4 at the time of writing). 370 371 Please consider using 'options KSTACK_PAGES=X' where X is greater 372 than or equal to ZFS_MIN_KSTACK_PAGES i.e. 4 in such configurations. 373 37420150706: 375 sendmail has been updated to 8.15.2. Starting with FreeBSD 11.0 376 and sendmail 8.15, sendmail uses uncompressed IPv6 addresses by 377 default, i.e., they will not contain "::". For example, instead 378 of ::1, it will be 0:0:0:0:0:0:0:1. This permits a zero subnet 379 to have a more specific match, such as different map entries for 380 IPv6:0:0 vs IPv6:0. This change requires that configuration 381 data (including maps, files, classes, custom ruleset, etc.) must 382 use the same format, so make certain such configuration data is 383 upgrading. As a very simple check search for patterns like 384 'IPv6:[0-9a-fA-F:]*::' and 'IPv6::'. To return to the old 385 behavior, set the m4 option confUSE_COMPRESSED_IPV6_ADDRESSES or 386 the cf option UseCompressedIPv6Addresses. 387 38820150630: 389 The default kernel entropy-processing algorithm is now 390 Fortuna, replacing Yarrow. 391 392 Assuming you have 'device random' in your kernel config 393 file, the configurations allow a kernel option to override 394 this default. You may choose *ONE* of: 395 396 options RANDOM_YARROW # Legacy /dev/random algorithm. 397 options RANDOM_DUMMY # Blocking-only driver. 398 399 If you have neither, you get Fortuna. For most people, 400 read no further, Fortuna will give a /dev/random that works 401 like it always used to, and the difference will be irrelevant. 402 403 If you remove 'device random', you get *NO* kernel-processed 404 entropy at all. This may be acceptable to folks building 405 embedded systems, but has complications. Carry on reading, 406 and it is assumed you know what you need. 407 408 *PLEASE* read random(4) and random(9) if you are in the 409 habit of tweaking kernel configs, and/or if you are a member 410 of the embedded community, wanting specific and not-usual 411 behaviour from your security subsystems. 412 413 NOTE!! If you use RANDOM_DUMMY and/or have no 'device 414 random', you will NOT have a functioning /dev/random, and 415 many cryptographic features will not work, including SSH. 416 You may also find strange behaviour from the random(3) set 417 of library functions, in particular sranddev(3), srandomdev(3) 418 and arc4random(3). The reason for this is that the KERN_ARND 419 sysctl only returns entropy if it thinks it has some to 420 share, and with RANDOM_DUMMY or no 'device random' this 421 will never happen. 422 42320150623: 424 An additional fix for the issue described in the 20150614 sendmail 425 entry below has been been committed in revision 284717. 426 42720150616: 428 FreeBSD's old make (fmake) has been removed from the system. It is 429 available as the devel/fmake port or via pkg install fmake. 430 43120150615: 432 The fix for the issue described in the 20150614 sendmail entry 433 below has been been committed in revision 284436. The work 434 around described in that entry is no longer needed unless the 435 default setting is overridden by a confDH_PARAMETERS configuration 436 setting of '5' or pointing to a 512 bit DH parameter file. 437 43820150614: 439 ALLOW_DEPRECATED_ATF_TOOLS/ATFFILE support has been removed from 440 atf.test.mk (included from bsd.test.mk). Please upgrade devel/atf 441 and devel/kyua to version 0.20+ and adjust any calling code to work 442 with Kyuafile and kyua. 443 44420150614: 445 The import of openssl to address the FreeBSD-SA-15:10.openssl 446 security advisory includes a change which rejects handshakes 447 with DH parameters below 768 bits. sendmail releases prior 448 to 8.15.2 (not yet released), defaulted to a 512 bit 449 DH parameter setting for client connections. To work around 450 this interoperability, sendmail can be configured to use a 451 2048 bit DH parameter by: 452 453 1. Edit /etc/mail/`hostname`.mc 454 2. If a setting for confDH_PARAMETERS does not exist or 455 exists and is set to a string beginning with '5', 456 replace it with '2'. 457 3. If a setting for confDH_PARAMETERS exists and is set to 458 a file path, create a new file with: 459 openssl dhparam -out /path/to/file 2048 460 4. Rebuild the .cf file: 461 cd /etc/mail/; make; make install 462 5. Restart sendmail: 463 cd /etc/mail/; make restart 464 465 A sendmail patch is coming, at which time this file will be 466 updated. 467 46820150604: 469 Generation of legacy formatted entries have been disabled by default 470 in pwd_mkdb(8), as all base system consumers of the legacy formatted 471 entries were converted to use the new format by default when the new, 472 machine independent format have been added and supported since FreeBSD 473 5.x. 474 475 Please see the pwd_mkdb(8) manual page for further details. 476 47720150525: 478 Clang and llvm have been upgraded to 3.6.1 release. Please see the 479 20141231 entry below for information about prerequisites and upgrading, 480 if you are not already using 3.5.0 or higher. 481 48220150521: 483 TI platform code switched to using vendor DTS files and this update 484 may break existing systems running on Beaglebone, Beaglebone Black, 485 and Pandaboard: 486 487 - dtb files should be regenerated/reinstalled. Filenames are the 488 same but content is different now 489 - GPIO addressing was changed, now each GPIO bank (32 pins per bank) 490 has its own /dev/gpiocX device, e.g. pin 121 on /dev/gpioc0 in old 491 addressing scheme is now pin 25 on /dev/gpioc3. 492 - Pandaboard: /etc/ttys should be updated, serial console device is 493 now /dev/ttyu2, not /dev/ttyu0 494 49520150501: 496 soelim(1) from gnu/usr.bin/groff has been replaced by usr.bin/soelim. 497 If you need the GNU extension from groff soelim(1), install groff 498 from package: pkg install groff, or via ports: textproc/groff. 499 50020150423: 501 chmod, chflags, chown and chgrp now affect symlinks in -R mode as 502 defined in symlink(7); previously symlinks were silently ignored. 503 50420150415: 505 The const qualifier has been removed from iconv(3) to comply with 506 POSIX. The ports tree is aware of this from r384038 onwards. 507 50820150416: 509 Libraries specified by LIBADD in Makefiles must have a corresponding 510 DPADD_<lib> variable to ensure correct dependencies. This is now 511 enforced in src.libnames.mk. 512 51320150324: 514 From legacy ata(4) driver was removed support for SATA controllers 515 supported by more functional drivers ahci(4), siis(4) and mvs(4). 516 Kernel modules ataahci and ataadaptec were removed completely, 517 replaced by ahci and mvs modules respectively. 518 51920150315: 520 Clang, llvm and lldb have been upgraded to 3.6.0 release. Please see 521 the 20141231 entry below for information about prerequisites and 522 upgrading, if you are not already using 3.5.0 or higher. 523 52420150307: 525 The 32-bit PowerPC kernel has been changed to a position-independent 526 executable. This can only be booted with a version of loader(8) 527 newer than January 31, 2015, so make sure to update both world and 528 kernel before rebooting. 529 53020150217: 531 If you are running a -CURRENT kernel since r273872 (Oct 30th, 2014), 532 but before r278950, the RNG was not seeded properly. Immediately 533 upgrade the kernel to r278950 or later and regenerate any keys (e.g. 534 ssh keys or openssl keys) that were generated w/ a kernel from that 535 range. This does not affect programs that directly used /dev/random 536 or /dev/urandom. All userland uses of arc4random(3) are affected. 537 53820150210: 539 The autofs(4) ABI was changed in order to restore binary compatibility 540 with 10.1-RELEASE. The automountd(8) daemon needs to be rebuilt to work 541 with the new kernel. 542 54320150131: 544 The powerpc64 kernel has been changed to a position-independent 545 executable. This can only be booted with a new version of loader(8), 546 so make sure to update both world and kernel before rebooting. 547 54820150118: 549 Clang and llvm have been upgraded to 3.5.1 release. This is a bugfix 550 only release, no new features have been added. Please see the 20141231 551 entry below for information about prerequisites and upgrading, if you 552 are not already using 3.5.0. 553 55420150107: 555 ELF tools addr2line, elfcopy (strip), nm, size, and strings are now 556 taken from the ELF Tool Chain project rather than GNU binutils. They 557 should be drop-in replacements, with the addition of arm64 support. 558 The WITHOUT_ELFTOOLCHAIN_TOOLS= knob may be used to obtain the 559 binutils tools, if necessary. See 20150805 for updated information. 560 56120150105: 562 The default Unbound configuration now enables remote control 563 using a local socket. Users who have already enabled the 564 local_unbound service should regenerate their configuration 565 by running "service local_unbound setup" as root. 566 56720150102: 568 The GNU texinfo and GNU info pages have been removed. 569 To be able to view GNU info pages please install texinfo from ports. 570 57120141231: 572 Clang, llvm and lldb have been upgraded to 3.5.0 release. 573 574 As of this release, a prerequisite for building clang, llvm and lldb is 575 a C++11 capable compiler and C++11 standard library. This means that to 576 be able to successfully build the cross-tools stage of buildworld, with 577 clang as the bootstrap compiler, your system compiler or cross compiler 578 should either be clang 3.3 or later, or gcc 4.8 or later, and your 579 system C++ library should be libc++, or libdstdc++ from gcc 4.8 or 580 later. 581 582 On any standard FreeBSD 10.x or 11.x installation, where clang and 583 libc++ are on by default (that is, on x86 or arm), this should work out 584 of the box. 585 586 On 9.x installations where clang is enabled by default, e.g. on x86 and 587 powerpc, libc++ will not be enabled by default, so libc++ should be 588 built (with clang) and installed first. If both clang and libc++ are 589 missing, build clang first, then use it to build libc++. 590 591 On 8.x and earlier installations, upgrade to 9.x first, and then follow 592 the instructions for 9.x above. 593 594 Sparc64 and mips users are unaffected, as they still use gcc 4.2.1 by 595 default, and do not build clang. 596 597 Many embedded systems are resource constrained, and will not be able to 598 build clang in a reasonable time, or in some cases at all. In those 599 cases, cross building bootable systems on amd64 is a workaround. 600 601 This new version of clang introduces a number of new warnings, of which 602 the following are most likely to appear: 603 604 -Wabsolute-value 605 606 This warns in two cases, for both C and C++: 607 * When the code is trying to take the absolute value of an unsigned 608 quantity, which is effectively a no-op, and almost never what was 609 intended. The code should be fixed, if at all possible. If you are 610 sure that the unsigned quantity can be safely cast to signed, without 611 loss of information or undefined behavior, you can add an explicit 612 cast, or disable the warning. 613 614 * When the code is trying to take an absolute value, but the called 615 abs() variant is for the wrong type, which can lead to truncation. 616 If you want to disable the warning instead of fixing the code, please 617 make sure that truncation will not occur, or it might lead to unwanted 618 side-effects. 619 620 -Wtautological-undefined-compare and 621 -Wundefined-bool-conversion 622 623 These warn when C++ code is trying to compare 'this' against NULL, while 624 'this' should never be NULL in well-defined C++ code. However, there is 625 some legacy (pre C++11) code out there, which actively abuses this 626 feature, which was less strictly defined in previous C++ versions. 627 628 Squid and openjdk do this, for example. The warning can be turned off 629 for C++98 and earlier, but compiling the code in C++11 mode might result 630 in unexpected behavior; for example, the parts of the program that are 631 unreachable could be optimized away. 632 63320141222: 634 The old NFS client and server (kernel options NFSCLIENT, NFSSERVER) 635 kernel sources have been removed. The .h files remain, since some 636 utilities include them. This will need to be fixed later. 637 If "mount -t oldnfs ..." is attempted, it will fail. 638 If the "-o" option on mountd(8), nfsd(8) or nfsstat(1) is used, 639 the utilities will report errors. 640 64120141121: 642 The handling of LOCAL_LIB_DIRS has been altered to skip addition of 643 directories to top level SUBDIR variable when their parent 644 directory is included in LOCAL_DIRS. Users with build systems with 645 such hierarchies and without SUBDIR entries in the parent 646 directory Makefiles should add them or add the directories to 647 LOCAL_DIRS. 648 64920141109: 650 faith(4) and faithd(8) have been removed from the base system. Faith 651 has been obsolete for a very long time. 652 65320141104: 654 vt(4), the new console driver, is enabled by default. It brings 655 support for Unicode and double-width characters, as well as 656 support for UEFI and integration with the KMS kernel video 657 drivers. 658 659 You may need to update your console settings in /etc/rc.conf, 660 most probably the keymap. During boot, /etc/rc.d/syscons will 661 indicate what you need to do. 662 663 vt(4) still has issues and lacks some features compared to 664 syscons(4). See the wiki for up-to-date information: 665 https://wiki.freebsd.org/Newcons 666 667 If you want to keep using syscons(4), you can do so by adding 668 the following line to /boot/loader.conf: 669 kern.vty=sc 670 67120141102: 672 pjdfstest has been integrated into kyua as an opt-in test suite. 673 Please see share/doc/pjdfstest/README for more details on how to 674 execute it. 675 67620141009: 677 gperf has been removed from the base system for architectures 678 that use clang. Ports that require gperf will obtain it from the 679 devel/gperf port. 680 68120140923: 682 pjdfstest has been moved from tools/regression/pjdfstest to 683 contrib/pjdfstest . 684 68520140922: 686 At svn r271982, The default linux compat kernel ABI has been adjusted 687 to 2.6.18 in support of the linux-c6 compat ports infrastructure 688 update. If you wish to continue using the linux-f10 compat ports, 689 add compat.linux.osrelease=2.6.16 to your local sysctl.conf. Users are 690 encouraged to update their linux-compat packages to linux-c6 during 691 their next update cycle. 692 69320140729: 694 The ofwfb driver, used to provide a graphics console on PowerPC when 695 using vt(4), no longer allows mmap() of all physical memory. This 696 will prevent Xorg on PowerPC with some ATI graphics cards from 697 initializing properly unless x11-servers/xorg-server is updated to 698 1.12.4_8 or newer. 699 70020140723: 701 The xdev targets have been converted to using TARGET and 702 TARGET_ARCH instead of XDEV and XDEV_ARCH. 703 70420140719: 705 The default unbound configuration has been modified to address 706 issues with reverse lookups on networks that use private 707 address ranges. If you use the local_unbound service, run 708 "service local_unbound setup" as root to regenerate your 709 configuration, then "service local_unbound reload" to load the 710 new configuration. 711 71220140709: 713 The GNU texinfo and GNU info pages are not built and installed 714 anymore, WITH_INFO knob has been added to allow to built and install 715 them again. 716 UPDATE: see 20150102 entry on texinfo's removal 717 71820140708: 719 The GNU readline library is now an INTERNALLIB - that is, it is 720 statically linked into consumers (GDB and variants) in the base 721 system, and the shared library is no longer installed. The 722 devel/readline port is available for third party software that 723 requires readline. 724 72520140702: 726 The Itanium architecture (ia64) has been removed from the list of 727 known architectures. This is the first step in the removal of the 728 architecture. 729 73020140701: 731 Commit r268115 has added NFSv4.1 server support, merged from 732 projects/nfsv4.1-server. Since this includes changes to the 733 internal interfaces between the NFS related modules, a full 734 build of the kernel and modules will be necessary. 735 __FreeBSD_version has been bumped. 736 73720140629: 738 The WITHOUT_VT_SUPPORT kernel config knob has been renamed 739 WITHOUT_VT. (The other _SUPPORT knobs have a consistent meaning 740 which differs from the behaviour controlled by this knob.) 741 74220140619: 743 Maximal length of the serial number in CTL was increased from 16 to 744 64 chars, that breaks ABI. All CTL-related tools, such as ctladm 745 and ctld, need to be rebuilt to work with a new kernel. 746 74720140606: 748 The libatf-c and libatf-c++ major versions were downgraded to 0 and 749 1 respectively to match the upstream numbers. They were out of 750 sync because, when they were originally added to FreeBSD, the 751 upstream versions were not respected. These libraries are private 752 and not yet built by default, so renumbering them should be a 753 non-issue. However, unclean source trees will yield broken test 754 programs once the operator executes "make delete-old-libs" after a 755 "make installworld". 756 757 Additionally, the atf-sh binary was made private by moving it into 758 /usr/libexec/. Already-built shell test programs will keep the 759 path to the old binary so they will break after "make delete-old" 760 is run. 761 762 If you are using WITH_TESTS=yes (not the default), wipe the object 763 tree and rebuild from scratch to prevent spurious test failures. 764 This is only needed once: the misnumbered libraries and misplaced 765 binaries have been added to OptionalObsoleteFiles.inc so they will 766 be removed during a clean upgrade. 767 76820140512: 769 Clang and llvm have been upgraded to 3.4.1 release. 770 77120140508: 772 We bogusly installed src.opts.mk in /usr/share/mk. This file should 773 be removed to avoid issues in the future (and has been added to 774 ObsoleteFiles.inc). 775 77620140505: 777 /etc/src.conf now affects only builds of the FreeBSD src tree. In the 778 past, it affected all builds that used the bsd.*.mk files. The old 779 behavior was a bug, but people may have relied upon it. To get this 780 behavior back, you can .include /etc/src.conf from /etc/make.conf 781 (which is still global and isn't changed). This also changes the 782 behavior of incremental builds inside the tree of individual 783 directories. Set MAKESYSPATH to ".../share/mk" to do that. 784 Although this has survived make universe and some upgrade scenarios, 785 other upgrade scenarios may have broken. At least one form of 786 temporary breakage was fixed with MAKESYSPATH settings for buildworld 787 as well... In cases where MAKESYSPATH isn't working with this 788 setting, you'll need to set it to the full path to your tree. 789 790 One side effect of all this cleaning up is that bsd.compiler.mk 791 is no longer implicitly included by bsd.own.mk. If you wish to 792 use COMPILER_TYPE, you must now explicitly include bsd.compiler.mk 793 as well. 794 79520140430: 796 The lindev device has been removed since /dev/full has been made a 797 standard device. __FreeBSD_version has been bumped. 798 79920140424: 800 The knob WITHOUT_VI was added to the base system, which controls 801 building ex(1), vi(1), etc. Older releases of FreeBSD required ex(1) 802 in order to reorder files share/termcap and didn't build ex(1) as a 803 build tool, so building/installing with WITH_VI is highly advised for 804 build hosts for older releases. 805 806 This issue has been fixed in stable/9 and stable/10 in r277022 and 807 r276991, respectively. 808 80920140418: 810 The YES_HESIOD knob has been removed. It has been obsolete for 811 a decade. Please move to using WITH_HESIOD instead or your builds 812 will silently lack HESIOD. 813 81420140405: 815 The uart(4) driver has been changed with respect to its handling 816 of the low-level console. Previously the uart(4) driver prevented 817 any process from changing the baudrate or the CLOCAL and HUPCL 818 control flags. By removing the restrictions, operators can make 819 changes to the serial console port without having to reboot. 820 However, when getty(8) is started on the serial device that is 821 associated with the low-level console, a misconfigured terminal 822 line in /etc/ttys will now have a real impact. 823 Before upgrading the kernel, make sure that /etc/ttys has the 824 serial console device configured as 3wire without baudrate to 825 preserve the previous behaviour. E.g: 826 ttyu0 "/usr/libexec/getty 3wire" vt100 on secure 827 82820140306: 829 Support for libwrap (TCP wrappers) in rpcbind was disabled by default 830 to improve performance. To re-enable it, if needed, run rpcbind 831 with command line option -W. 832 83320140226: 834 Switched back to the GPL dtc compiler due to updates in the upstream 835 dts files not being supported by the BSDL dtc compiler. You will need 836 to rebuild your kernel toolchain to pick up the new compiler. Core dumps 837 may result while building dtb files during a kernel build if you fail 838 to do so. Set WITHOUT_GPL_DTC if you require the BSDL compiler. 839 84020140216: 841 Clang and llvm have been upgraded to 3.4 release. 842 84320140216: 844 The nve(4) driver has been removed. Please use the nfe(4) driver 845 for NVIDIA nForce MCP Ethernet adapters instead. 846 84720140212: 848 An ABI incompatibility crept into the libc++ 3.4 import in r261283. 849 This could cause certain C++ applications using shared libraries built 850 against the previous version of libc++ to crash. The incompatibility 851 has now been fixed, but any C++ applications or shared libraries built 852 between r261283 and r261801 should be recompiled. 853 85420140204: 855 OpenSSH will now ignore errors caused by kernel lacking of Capsicum 856 capability mode support. Please note that enabling the feature in 857 kernel is still highly recommended. 858 85920140131: 860 OpenSSH is now built with sandbox support, and will use sandbox as 861 the default privilege separation method. This requires Capsicum 862 capability mode support in kernel. 863 86420140128: 865 The libelf and libdwarf libraries have been updated to newer 866 versions from upstream. Shared library version numbers for 867 these two libraries were bumped. Any ports or binaries 868 requiring these two libraries should be recompiled. 869 __FreeBSD_version is bumped to 1100006. 870 87120140110: 872 If a Makefile in a tests/ directory was auto-generating a Kyuafile 873 instead of providing an explicit one, this would prevent such 874 Makefile from providing its own Kyuafile in the future during 875 NO_CLEAN builds. This has been fixed in the Makefiles but manual 876 intervention is needed to clean an objdir if you use NO_CLEAN: 877 # find /usr/obj -name Kyuafile | xargs rm -f 878 87920131213: 880 The behavior of gss_pseudo_random() for the krb5 mechanism 881 has changed, for applications requesting a longer random string 882 than produced by the underlying enctype's pseudo-random() function. 883 In particular, the random string produced from a session key of 884 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 885 be different at the 17th octet and later, after this change. 886 The counter used in the PRF+ construction is now encoded as a 887 big-endian integer in accordance with RFC 4402. 888 __FreeBSD_version is bumped to 1100004. 889 89020131108: 891 The WITHOUT_ATF build knob has been removed and its functionality 892 has been subsumed into the more generic WITHOUT_TESTS. If you were 893 using the former to disable the build of the ATF libraries, you 894 should change your settings to use the latter. 895 89620131025: 897 The default version of mtree is nmtree which is obtained from 898 NetBSD. The output is generally the same, but may vary 899 slightly. If you found you need identical output adding 900 "-F freebsd9" to the command line should do the trick. For the 901 time being, the old mtree is available as fmtree. 902 90320131014: 904 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 905 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 906 1.1.4_8 and verify bsdyml not linked in, before running "make 907 delete-old-libs": 908 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 909 or 910 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 911 91220131010: 913 The stable/10 branch has been created in subversion from head 914 revision r256279. 915 91620131010: 917 The rc.d/jail script has been updated to support jail(8) 918 configuration file. The "jail_<jname>_*" rc.conf(5) variables 919 for per-jail configuration are automatically converted to 920 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 921 This is transparently backward compatible. See below about some 922 incompatibilities and rc.conf(5) manual page for more details. 923 924 These variables are now deprecated in favor of jail(8) configuration 925 file. One can use "rc.d/jail config <jname>" command to generate 926 a jail(8) configuration file in /var/run/jail.<jname>.conf without 927 running the jail(8) utility. The default pathname of the 928 configuration file is /etc/jail.conf and can be specified by 929 using $jail_conf or $jail_<jname>_conf variables. 930 931 Please note that jail_devfs_ruleset accepts an integer at 932 this moment. Please consider to rewrite the ruleset name 933 with an integer. 934 93520130930: 936 BIND has been removed from the base system. If all you need 937 is a local resolver, simply enable and start the local_unbound 938 service instead. Otherwise, several versions of BIND are 939 available in the ports tree. The dns/bind99 port is one example. 940 941 With this change, nslookup(1) and dig(1) are no longer in the base 942 system. Users should instead use host(1) and drill(1) which are 943 in the base system. Alternatively, nslookup and dig can 944 be obtained by installing the dns/bind-tools port. 945 94620130916: 947 With the addition of unbound(8), a new unbound user is now 948 required during installworld. "mergemaster -p" can be used to 949 add the user prior to installworld, as documented in the handbook. 950 95120130911: 952 OpenSSH is now built with DNSSEC support, and will by default 953 silently trust signed SSHFP records. This can be controlled with 954 the VerifyHostKeyDNS client configuration setting. DNSSEC support 955 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 956 95720130906: 958 The GNU Compiler Collection and C++ standard library (libstdc++) 959 are no longer built by default on platforms where clang is the system 960 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 961 options in src.conf. 962 96320130905: 964 The PROCDESC kernel option is now part of the GENERIC kernel 965 configuration and is required for the rwhod(8) to work. 966 If you are using custom kernel configuration, you should include 967 'options PROCDESC'. 968 96920130905: 970 The API and ABI related to the Capsicum framework was modified 971 in backward incompatible way. The userland libraries and programs 972 have to be recompiled to work with the new kernel. This includes the 973 following libraries and programs, but the whole buildworld is 974 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 975 kdump, procstat, rwho, rwhod, uniq. 976 97720130903: 978 AES-NI intrinsic support has been added to gcc. The AES-NI module 979 has been updated to use this support. A new gcc is required to build 980 the aesni module on both i386 and amd64. 981 98220130821: 983 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 984 Thus "device padlock_rng" and "device rdrand_rng" should be 985 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 986 98720130813: 988 WITH_ICONV has been split into two feature sets. WITH_ICONV now 989 enables just the iconv* functionality and is now on by default. 990 WITH_LIBICONV_COMPAT enables the libiconv api and link time 991 compatibility. Set WITHOUT_ICONV to build the old way. 992 If you have been using WITH_ICONV before, you will very likely 993 need to turn on WITH_LIBICONV_COMPAT. 994 99520130806: 996 INVARIANTS option now enables DEBUG for code with OpenSolaris and 997 Illumos origin, including ZFS. If you have INVARIANTS in your 998 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 999 explicitly. 1000 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 1001 locks if WITNESS option was set. Because that generated a lot of 1002 witness(9) reports and all of them were believed to be false 1003 positives, this is no longer done. New option OPENSOLARIS_WITNESS 1004 can be used to achieve the previous behavior. 1005 100620130806: 1007 Timer values in IPv6 data structures now use time_uptime instead 1008 of time_second. Although this is not a user-visible functional 1009 change, userland utilities which directly use them---ndp(8), 1010 rtadvd(8), and rtsold(8) in the base system---need to be updated 1011 to r253970 or later. 1012 101320130802: 1014 find -delete can now delete the pathnames given as arguments, 1015 instead of only files found below them or if the pathname did 1016 not contain any slashes. Formerly, the following error message 1017 would result: 1018 1019 find: -delete: <path>: relative path potentially not safe 1020 1021 Deleting the pathnames given as arguments can be prevented 1022 without error messages using -mindepth 1 or by changing 1023 directory and passing "." as argument to find. This works in the 1024 old as well as the new version of find. 1025 102620130726: 1027 Behavior of devfs rules path matching has been changed. 1028 Pattern is now always matched against fully qualified devfs 1029 path and slash characters must be explicitly matched by 1030 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 1031 subdirectories must be reviewed. 1032 103320130716: 1034 The default ARM ABI has changed to the ARM EABI. The old ABI is 1035 incompatible with the ARM EABI and all programs and modules will 1036 need to be rebuilt to work with a new kernel. 1037 1038 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 1039 1040 NOTE: Support for the old ABI will be removed in the future and 1041 users are advised to upgrade. 1042 104320130709: 1044 pkg_install has been disconnected from the build if you really need it 1045 you should add WITH_PKGTOOLS in your src.conf(5). 1046 104720130709: 1048 Most of network statistics structures were changed to be able 1049 keep 64-bits counters. Thus all tools, that work with networking 1050 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 1051 105220130618: 1053 Fix a bug that allowed a tracing process (e.g. gdb) to write 1054 to a memory-mapped file in the traced process's address space 1055 even if neither the traced process nor the tracing process had 1056 write access to that file. 1057 105820130615: 1059 CVS has been removed from the base system. An exact copy 1060 of the code is available from the devel/cvs port. 1061 106220130613: 1063 Some people report the following error after the switch to bmake: 1064 1065 make: illegal option -- J 1066 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 1067 ... 1068 *** [buildworld] Error code 2 1069 1070 this likely due to an old instance of make in 1071 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 1072 which src/Makefile will use that blindly, if it exists, so if 1073 you see the above error: 1074 1075 rm -rf `make -V MAKEPATH` 1076 1077 should resolve it. 1078 107920130516: 1080 Use bmake by default. 1081 Whereas before one could choose to build with bmake via 1082 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 1083 make. The goal is to remove these knobs for 10-RELEASE. 1084 1085 It is worth noting that bmake (like gmake) treats the command 1086 line as the unit of failure, rather than statements within the 1087 command line. Thus '(cd some/where && dosomething)' is safer 1088 than 'cd some/where; dosomething'. The '()' allows consistent 1089 behavior in parallel build. 1090 109120130429: 1092 Fix a bug that allows NFS clients to issue READDIR on files. 1093 109420130426: 1095 The WITHOUT_IDEA option has been removed because 1096 the IDEA patent expired. 1097 109820130426: 1099 The sysctl which controls TRIM support under ZFS has been renamed 1100 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 1101 enabled by default. 1102 110320130425: 1104 The mergemaster command now uses the default MAKEOBJDIRPREFIX 1105 rather than creating it's own in the temporary directory in 1106 order allow access to bootstrapped versions of tools such as 1107 install and mtree. When upgrading from version of FreeBSD where 1108 the install command does not support -l, you will need to 1109 install a new mergemaster command if mergemaster -p is required. 1110 This can be accomplished with the command (cd src/usr.sbin/mergemaster 1111 && make install). 1112 111320130404: 1114 Legacy ATA stack, disabled and replaced by new CAM-based one since 1115 FreeBSD 9.0, completely removed from the sources. Kernel modules 1116 atadisk and atapi*, user-level tools atacontrol and burncd are 1117 removed. Kernel option `options ATA_CAM` is now permanently enabled 1118 and removed. 1119 112020130319: 1121 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 1122 and socketpair(2). Software, in particular Kerberos, may 1123 automatically detect and use these during building. The resulting 1124 binaries will not work on older kernels. 1125 112620130308: 1127 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 1128 information, see the respective 20130304 entry). 1129 113020130304: 1131 Recent commits to callout(9) changed the size of struct callout, 1132 so the KBI is probably heavily disturbed. Also, some functions 1133 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 1134 by macros. Every kernel module using it won't load, so rebuild 1135 is requested. 1136 1137 The ctl device has been re-enabled in GENERIC for i386 and amd64, 1138 but does not initialize by default (because of the new CTL_DISABLE 1139 option) to save memory. To re-enable it, remove the CTL_DISABLE 1140 option from the kernel config file or set kern.cam.ctl.disable=0 1141 in /boot/loader.conf. 1142 114320130301: 1144 The ctl device has been disabled in GENERIC for i386 and amd64. 1145 This was done due to the extra memory being allocated at system 1146 initialisation time by the ctl driver which was only used if 1147 a CAM target device was created. This makes a FreeBSD system 1148 unusable on 128MB or less of RAM. 1149 115020130208: 1151 A new compression method (lz4) has been merged to -HEAD. Please 1152 refer to zpool-features(7) for more information. 1153 1154 Please refer to the "ZFS notes" section of this file for information 1155 on upgrading boot ZFS pools. 1156 115720130129: 1158 A BSD-licensed patch(1) variant has been added and is installed 1159 as bsdpatch, being the GNU version the default patch. 1160 To inverse the logic and use the BSD-licensed one as default, 1161 while having the GNU version installed as gnupatch, rebuild 1162 and install world with the WITH_BSD_PATCH knob set. 1163 116420130121: 1165 Due to the use of the new -l option to install(1) during build 1166 and install, you must take care not to directly set the INSTALL 1167 make variable in your /etc/make.conf, /etc/src.conf, or on the 1168 command line. If you wish to use the -C flag for all installs 1169 you may be able to add INSTALL+=-C to /etc/make.conf or 1170 /etc/src.conf. 1171 117220130118: 1173 The install(1) option -M has changed meaning and now takes an 1174 argument that is a file or path to append logs to. In the 1175 unlikely event that -M was the last option on the command line 1176 and the command line contained at least two files and a target 1177 directory the first file will have logs appended to it. The -M 1178 option served little practical purpose in the last decade so its 1179 use is expected to be extremely rare. 1180 118120121223: 1182 After switching to Clang as the default compiler some users of ZFS 1183 on i386 systems started to experience stack overflow kernel panics. 1184 Please consider using 'options KSTACK_PAGES=4' in such configurations. 1185 118620121222: 1187 GEOM_LABEL now mangles label names read from file system metadata. 1188 Mangling affect labels containing spaces, non-printable characters, 1189 '%' or '"'. Device names in /etc/fstab and other places may need to 1190 be updated. 1191 119220121217: 1193 By default, only the 10 most recent kernel dumps will be saved. To 1194 restore the previous behaviour (no limit on the number of kernel dumps 1195 stored in the dump directory) add the following line to /etc/rc.conf: 1196 1197 savecore_flags="" 1198 119920121201: 1200 With the addition of auditdistd(8), a new auditdistd user is now 1201 required during installworld. "mergemaster -p" can be used to 1202 add the user prior to installworld, as documented in the handbook. 1203 120420121117: 1205 The sin6_scope_id member variable in struct sockaddr_in6 is now 1206 filled by the kernel before passing the structure to the userland via 1207 sysctl or routing socket. This means the KAME-specific embedded scope 1208 id in sin6_addr.s6_addr[2] is always cleared in userland application. 1209 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 1210 __FreeBSD_version is bumped to 1000025. 1211 121220121105: 1213 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 1214 This means that the world and kernel will be compiled with clang 1215 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 1216 and /usr/bin/cpp. To disable this behavior and revert to building 1217 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 1218 of current may need to bootstrap WITHOUT_CLANG first if the clang 1219 build fails (its compatibility window doesn't extend to the 9 stable 1220 branch point). 1221 122220121102: 1223 The IPFIREWALL_FORWARD kernel option has been removed. Its 1224 functionality now turned on by default. 1225 122620121023: 1227 The ZERO_COPY_SOCKET kernel option has been removed and 1228 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 1229 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 1230 mechanism which is not safe and may result in kernel crashes. 1231 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 1232 driver supports disposeable external page sized mbuf storage. 1233 Proper replacements for both zero-copy mechanisms are under 1234 consideration and will eventually lead to complete removal 1235 of the two kernel options. 1236 123720121023: 1238 The IPv4 network stack has been converted to network byte 1239 order. The following modules need to be recompiled together 1240 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 1241 pf(4), ipfw(4), ng_ipfw(4), stf(4). 1242 124320121022: 1244 Support for non-MPSAFE filesystems was removed from VFS. The 1245 VFS_VERSION was bumped, all filesystem modules shall be 1246 recompiled. 1247 124820121018: 1249 All the non-MPSAFE filesystems have been disconnected from 1250 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 1251 portalfs, smbfs, xfs. 1252 125320121016: 1254 The interface cloning API and ABI has changed. The following 1255 modules need to be recompiled together with kernel: 1256 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 1257 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 1258 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 1259 126020121015: 1261 The sdhci driver was split in two parts: sdhci (generic SD Host 1262 Controller logic) and sdhci_pci (actual hardware driver). 1263 No kernel config modifications are required, but if you 1264 load sdhc as a module you must switch to sdhci_pci instead. 1265 126620121014: 1267 Import the FUSE kernel and userland support into base system. 1268 126920121013: 1270 The GNU sort(1) program has been removed since the BSD-licensed 1271 sort(1) has been the default for quite some time and no serious 1272 problems have been reported. The corresponding WITH_GNU_SORT 1273 knob has also gone. 1274 127520121006: 1276 The pfil(9) API/ABI for AF_INET family has been changed. Packet 1277 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 1278 with new kernel. 1279 128020121001: 1281 The net80211(4) ABI has been changed to allow for improved driver 1282 PS-POLL and power-save support. All wireless drivers need to be 1283 recompiled to work with the new kernel. 1284 128520120913: 1286 The random(4) support for the VIA hardware random number 1287 generator (`PADLOCK') is no longer enabled unconditionally. 1288 Add the padlock_rng device in the custom kernel config if 1289 needed. The GENERIC kernels on i386 and amd64 do include the 1290 device, so the change only affects the custom kernel 1291 configurations. 1292 129320120908: 1294 The pf(4) packet filter ABI has been changed. pfctl(8) and 1295 snmp_pf module need to be recompiled to work with new kernel. 1296 129720120828: 1298 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 1299 to -HEAD. Pools that have empty_bpobj in active state can not be 1300 imported read-write with ZFS implementations that do not support 1301 this feature. For more information read the zpool-features(5) 1302 manual page. 1303 130420120727: 1305 The sparc64 ZFS loader has been changed to no longer try to auto- 1306 detect ZFS providers based on diskN aliases but now requires these 1307 to be explicitly listed in the OFW boot-device environment variable. 1308 130920120712: 1310 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 1311 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 1312 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 1313 131420120712: 1315 The following sysctls and tunables have been renamed for consistency 1316 with other variables: 1317 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 1318 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 1319 132020120628: 1321 The sort utility has been replaced with BSD sort. For now, GNU sort 1322 is also available as "gnusort" or the default can be set back to 1323 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 1324 installed as "bsdsort". 1325 132620120611: 1327 A new version of ZFS (pool version 5000) has been merged to -HEAD. 1328 Starting with this version the old system of ZFS pool versioning 1329 is superseded by "feature flags". This concept enables forward 1330 compatibility against certain future changes in functionality of ZFS 1331 pools. The first read-only compatible "feature flag" for ZFS pools 1332 is named "com.delphix:async_destroy". For more information 1333 read the new zpool-features(5) manual page. 1334 Please refer to the "ZFS notes" section of this file for information 1335 on upgrading boot ZFS pools. 1336 133720120417: 1338 The malloc(3) implementation embedded in libc now uses sources imported 1339 as contrib/jemalloc. The most disruptive API change is to 1340 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 1341 delete it prior to installworld, and optionally re-create it using the 1342 new format after rebooting. See malloc.conf(5) for details 1343 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 1344 NAMESPACE section). 1345 134620120328: 1347 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 1348 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 1349 now spelled mips. This is to aid compatibility with third-party 1350 software that expects this naming scheme in uname(3). Little-endian 1351 settings are unchanged. If you are updating a big-endian mips64 machine 1352 from before this change, you may need to set MACHINE_ARCH=mips64 in 1353 your environment before the new build system will recognize your machine. 1354 135520120306: 1356 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 1357 platforms. 1358 135920120229: 1360 Now unix domain sockets behave "as expected" on nullfs(5). Previously 1361 nullfs(5) did not pass through all behaviours to the underlying layer, 1362 as a result if we bound to a socket on the lower layer we could connect 1363 only to the lower path; if we bound to the upper layer we could connect 1364 only to the upper path. The new behavior is one can connect to both the 1365 lower and the upper paths regardless what layer path one binds to. 1366 136720120211: 1368 The getifaddrs upgrade path broken with 20111215 has been restored. 1369 If you have upgraded in between 20111215 and 20120209 you need to 1370 recompile libc again with your kernel. You still need to recompile 1371 world to be able to configure CARP but this restriction already 1372 comes from 20111215. 1373 137420120114: 1375 The set_rcvar() function has been removed from /etc/rc.subr. All 1376 base and ports rc.d scripts have been updated, so if you have a 1377 port installed with a script in /usr/local/etc/rc.d you can either 1378 hand-edit the rcvar= line, or reinstall the port. 1379 1380 An easy way to handle the mass-update of /etc/rc.d: 1381 rm /etc/rc.d/* && mergemaster -i 1382 138320120109: 1384 panic(9) now stops other CPUs in the SMP systems, disables interrupts 1385 on the current CPU and prevents other threads from running. 1386 This behavior can be reverted using the kern.stop_scheduler_on_panic 1387 tunable/sysctl. 1388 The new behavior can be incompatible with kern.sync_on_panic. 1389 139020111215: 1391 The carp(4) facility has been changed significantly. Configuration 1392 of the CARP protocol via ifconfig(8) has changed, as well as format 1393 of CARP events submitted to devd(8) has changed. See manual pages 1394 for more information. The arpbalance feature of carp(4) is currently 1395 not supported anymore. 1396 1397 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 1398 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 1399 need to be recompiled. 1400 140120111122: 1402 The acpi_wmi(4) status device /dev/wmistat has been renamed to 1403 /dev/wmistat0. 1404 140520111108: 1406 The option VFS_ALLOW_NONMPSAFE option has been added in order to 1407 explicitely support non-MPSAFE filesystems. 1408 It is on by default for all supported platform at this present 1409 time. 1410 141120111101: 1412 The broken amd(4) driver has been replaced with esp(4) in the amd64, 1413 i386 and pc98 GENERIC kernel configuration files. 1414 141520110930: 1416 sysinstall has been removed 1417 141820110923: 1419 The stable/9 branch created in subversion. This corresponds to the 1420 RELENG_9 branch in CVS. 1421 1422COMMON ITEMS: 1423 1424 General Notes 1425 ------------- 1426 Avoid using make -j when upgrading. While generally safe, there are 1427 sometimes problems using -j to upgrade. If your upgrade fails with 1428 -j, please try again without -j. From time to time in the past there 1429 have been problems using -j with buildworld and/or installworld. This 1430 is especially true when upgrading between "distant" versions (eg one 1431 that cross a major release boundary or several minor releases, or when 1432 several months have passed on the -current branch). 1433 1434 Sometimes, obscure build problems are the result of environment 1435 poisoning. This can happen because the make utility reads its 1436 environment when searching for values for global variables. To run 1437 your build attempts in an "environmental clean room", prefix all make 1438 commands with 'env -i '. See the env(1) manual page for more details. 1439 1440 When upgrading from one major version to another it is generally best 1441 to upgrade to the latest code in the currently installed branch first, 1442 then do an upgrade to the new branch. This is the best-tested upgrade 1443 path, and has the highest probability of being successful. Please try 1444 this approach before reporting problems with a major version upgrade. 1445 1446 When upgrading a live system, having a root shell around before 1447 installing anything can help undo problems. Not having a root shell 1448 around can lead to problems if pam has changed too much from your 1449 starting point to allow continued authentication after the upgrade. 1450 1451 This file should be read as a log of events. When a later event changes 1452 information of a prior event, the prior event should not be deleted. 1453 Instead, a pointer to the entry with the new information should be 1454 placed in the old entry. Readers of this file should also sanity check 1455 older entries before relying on them blindly. Authors of new entries 1456 should write them with this in mind. 1457 1458 ZFS notes 1459 --------- 1460 When upgrading the boot ZFS pool to a new version, always follow 1461 these two steps: 1462 1463 1.) recompile and reinstall the ZFS boot loader and boot block 1464 (this is part of "make buildworld" and "make installworld") 1465 1466 2.) update the ZFS boot block on your boot drive 1467 1468 The following example updates the ZFS boot block on the first 1469 partition (freebsd-boot) of a GPT partitioned drive ada0: 1470 "gpart bootcode -p /boot/gptzfsboot -i 1 ada0" 1471 1472 Non-boot pools do not need these updates. 1473 1474 To build a kernel 1475 ----------------- 1476 If you are updating from a prior version of FreeBSD (even one just 1477 a few days old), you should follow this procedure. It is the most 1478 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1479 1480 make kernel-toolchain 1481 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1482 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1483 1484 To test a kernel once 1485 --------------------- 1486 If you just want to boot a kernel once (because you are not sure 1487 if it works, or if you want to boot a known bad kernel to provide 1488 debugging information) run 1489 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1490 nextboot -k testkernel 1491 1492 To just build a kernel when you know that it won't mess you up 1493 -------------------------------------------------------------- 1494 This assumes you are already running a CURRENT system. Replace 1495 ${arch} with the architecture of your machine (e.g. "i386", 1496 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1497 1498 cd src/sys/${arch}/conf 1499 config KERNEL_NAME_HERE 1500 cd ../compile/KERNEL_NAME_HERE 1501 make depend 1502 make 1503 make install 1504 1505 If this fails, go to the "To build a kernel" section. 1506 1507 To rebuild everything and install it on the current system. 1508 ----------------------------------------------------------- 1509 # Note: sometimes if you are running current you gotta do more than 1510 # is listed here if you are upgrading from a really old current. 1511 1512 <make sure you have good level 0 dumps> 1513 make buildworld 1514 make kernel KERNCONF=YOUR_KERNEL_HERE 1515 [1] 1516 <reboot in single user> [3] 1517 mergemaster -Fp [5] 1518 make installworld 1519 mergemaster -Fi [4] 1520 make delete-old [6] 1521 <reboot> 1522 1523 To cross-install current onto a separate partition 1524 -------------------------------------------------- 1525 # In this approach we use a separate partition to hold 1526 # current's root, 'usr', and 'var' directories. A partition 1527 # holding "/", "/usr" and "/var" should be about 2GB in 1528 # size. 1529 1530 <make sure you have good level 0 dumps> 1531 <boot into -stable> 1532 make buildworld 1533 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1534 <maybe newfs current's root partition> 1535 <mount current's root partition on directory ${CURRENT_ROOT}> 1536 make installworld DESTDIR=${CURRENT_ROOT} -DDB_FROM_SRC 1537 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1538 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1539 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1540 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1541 <reboot into current> 1542 <do a "native" rebuild/install as described in the previous section> 1543 <maybe install compatibility libraries from ports/misc/compat*> 1544 <reboot> 1545 1546 1547 To upgrade in-place from stable to current 1548 ---------------------------------------------- 1549 <make sure you have good level 0 dumps> 1550 make buildworld [9] 1551 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1552 [1] 1553 <reboot in single user> [3] 1554 mergemaster -Fp [5] 1555 make installworld 1556 mergemaster -Fi [4] 1557 make delete-old [6] 1558 <reboot> 1559 1560 Make sure that you've read the UPDATING file to understand the 1561 tweaks to various things you need. At this point in the life 1562 cycle of current, things change often and you are on your own 1563 to cope. The defaults can also change, so please read ALL of 1564 the UPDATING entries. 1565 1566 Also, if you are tracking -current, you must be subscribed to 1567 freebsd-current@freebsd.org. Make sure that before you update 1568 your sources that you have read and understood all the recent 1569 messages there. If in doubt, please track -stable which has 1570 much fewer pitfalls. 1571 1572 [1] If you have third party modules, such as vmware, you 1573 should disable them at this point so they don't crash your 1574 system on reboot. 1575 1576 [3] From the bootblocks, boot -s, and then do 1577 fsck -p 1578 mount -u / 1579 mount -a 1580 cd src 1581 adjkerntz -i # if CMOS is wall time 1582 Also, when doing a major release upgrade, it is required that 1583 you boot into single user mode to do the installworld. 1584 1585 [4] Note: This step is non-optional. Failure to do this step 1586 can result in a significant reduction in the functionality of the 1587 system. Attempting to do it by hand is not recommended and those 1588 that pursue this avenue should read this file carefully, as well 1589 as the archives of freebsd-current and freebsd-hackers mailing lists 1590 for potential gotchas. The -U option is also useful to consider. 1591 See mergemaster(8) for more information. 1592 1593 [5] Usually this step is a noop. However, from time to time 1594 you may need to do this if you get unknown user in the following 1595 step. It never hurts to do it all the time. You may need to 1596 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1597 install) after the buildworld before this step if you last updated 1598 from current before 20130425 or from -stable before 20130430. 1599 1600 [6] This only deletes old files and directories. Old libraries 1601 can be deleted by "make delete-old-libs", but you have to make 1602 sure that no program is using those libraries anymore. 1603 1604 [8] In order to have a kernel that can run the 4.x binaries needed to 1605 do an installworld, you must include the COMPAT_FREEBSD4 option in 1606 your kernel. Failure to do so may leave you with a system that is 1607 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1608 required to run the 5.x binaries on more recent kernels. And so on 1609 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1610 1611 Make sure that you merge any new devices from GENERIC since the 1612 last time you updated your kernel config file. 1613 1614 [9] When checking out sources, you must include the -P flag to have 1615 cvs prune empty directories. 1616 1617 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1618 "?=" instead of the "=" assignment operator, so that buildworld can 1619 override the CPUTYPE if it needs to. 1620 1621 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1622 not on the command line, or in /etc/make.conf. buildworld will 1623 warn if it is improperly defined. 1624FORMAT: 1625 1626This file contains a list, in reverse chronological order, of major 1627breakages in tracking -current. It is not guaranteed to be a complete 1628list of such breakages, and only contains entries since September 23, 2011. 1629If you need to see UPDATING entries from before that date, you will need 1630to fetch an UPDATING file from an older FreeBSD release. 1631 1632Copyright information: 1633 1634Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1635 1636Redistribution, publication, translation and use, with or without 1637modification, in full or in part, in any form or format of this 1638document are permitted without further permission from the author. 1639 1640THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 1641IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1642WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1643DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 1644INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 1645(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 1646SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1647HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 1648STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 1649IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1650POSSIBILITY OF SUCH DAMAGE. 1651 1652Contact Warner Losh if you have any questions about your use of 1653this document. 1654 1655$FreeBSD: stable/11/UPDATING 316423 2017-04-02 17:24:58Z dim $ 1656