Re: git: 315ee00fa961 - main - zfs: merge openzfs/zfs@804414aad

From: Drew Gallatin <gallatin_at_freebsd.org>
Date: Thu, 31 Aug 2023 12:45:41 UTC

On Wed, Aug 30, 2023, at 8:01 PM, Alexander Motin wrote:
> Hi Gleb,
> 
> It is the first time I see a panic like this.  I'll think about it 
> tomorrow.  But I'd appreciate any information on what is your workload 
> and what are you doing related to ZIL (O_SYNC, fsync(), sync=always, 
> etc) to trigger it?  What is your pool configuration?

I'm not Gleb, but this was something at $WORK, so I can perhaps help.  I've included the output of zpool status, and all non-default settings in the zpool.  Note that we don't use a ZIL device.

Thanks,

Drew


# zpool status
  pool: zroot
state: ONLINE
status: Some supported and requested features are not enabled on the pool.
The pool can still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
the pool may no longer be accessible by software that does not support
the features. See zpool-features(7) for details.
config:

NAME        STATE     READ WRITE CKSUM
zroot       ONLINE       0     0     0
  raidz1-0  ONLINE       0     0     0
    nda0p2  ONLINE       0     0     0
    nda1p2  ONLINE       0     0     0
    nda2p2  ONLINE       0     0     0
spares
  nda3p2    AVAIL   

errors: No known data errors

# zpool get all | grep -v default
NAME   PROPERTY                       VALUE                                                           SOURCE
zroot  size                           149G                                                            -
zroot  capacity                       14%                                                             -
zroot  health                         ONLINE                                                          -
zroot  guid                           5099990586719219765                                             -
zroot  bootfs                         zroot/ROOT/NCD-7827-freebsd-2023-08-29-merge-oca-r202308291935  local
zroot  dedupratio                     1.00x                                                           -
zroot  free                           127G                                                            -
zroot  allocated                      22.3G                                                           -
zroot  readonly                       off                                                             -
zroot  expandsize                     -                                                               -
zroot  freeing                        0                                                               -
zroot  fragmentation                  28%                                                             -
zroot  leaked                         0                                                               -
zroot  checkpoint                     -                                                               -
zroot  load_guid                      7612195721260396606                                             -
zroot  bcloneused                     0                                                               -
zroot  bclonesaved                    0                                                               -
zroot  bcloneratio                    1.00x                                                           -
zroot  feature@async_destroy          enabled                                                         local
zroot  feature@empty_bpobj            active                                                          local
zroot  feature@lz4_compress           active                                                          local
zroot  feature@multi_vdev_crash_dump  enabled                                                         local
zroot  feature@spacemap_histogram     active                                                          local
zroot  feature@enabled_txg            active                                                          local
zroot  feature@hole_birth             active                                                          local
zroot  feature@extensible_dataset     active                                                          local
zroot  feature@embedded_data          active                                                          local
zroot  feature@bookmarks              enabled                                                         local
zroot  feature@filesystem_limits      enabled                                                         local
zroot  feature@large_blocks           enabled                                                         local
zroot  feature@large_dnode            enabled                                                         local
zroot  feature@sha512                 enabled                                                         local
zroot  feature@skein                  enabled                                                         local
zroot  feature@edonr                  disabled                                                        local
zroot  feature@userobj_accounting     active                                                          local
zroot  feature@encryption             enabled                                                         local
zroot  feature@project_quota          active                                                          local
zroot  feature@device_removal         enabled                                                         local
zroot  feature@obsolete_counts        enabled                                                         local
zroot  feature@zpool_checkpoint       enabled                                                         local
zroot  feature@spacemap_v2            active                                                          local
zroot  feature@allocation_classes     enabled                                                         local
zroot  feature@resilver_defer         enabled                                                         local
zroot  feature@bookmark_v2            enabled                                                         local
zroot  feature@redaction_bookmarks    enabled                                                         local
zroot  feature@redacted_datasets      enabled                                                         local
zroot  feature@bookmark_written       enabled                                                         local
zroot  feature@log_spacemap           active                                                          local
zroot  feature@livelist               enabled                                                         local
zroot  feature@device_rebuild         enabled                                                         local
zroot  feature@zstd_compress          enabled                                                         local
zroot  feature@draid                  enabled                                                         local
zroot  feature@zilsaxattr             disabled                                                        local
zroot  feature@head_errlog            disabled                                                        local
zroot  feature@blake3                 disabled                                                        local
zroot  feature@block_cloning          disabled                                                        local
zroot  feature@vdev_zaps_v2           disabled                                                        local


> On 30.08.2023 20:09, Gleb Smirnoff wrote:
> >    Hi Martin,
> > 
> > we hit this panic with this update:
> > 
> > panic: VERIFY(avl_is_empty(&lwb->lwb_vdev_tree)) failed
> > 
> > cpuid = 8
> > time = 1693432004
> > KDB: stack backtrace:
> > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe09519aa800
> > vpanic() at vpanic+0x132/frame 0xfffffe09519aa930
> > spl_panic() at spl_panic+0x3a/frame 0xfffffe09519aa990
> > zil_free_lwb() at zil_free_lwb+0x1de/frame 0xfffffe09519aa9c0
> > zil_sync() at zil_sync+0x3cb/frame 0xfffffe09519aaaa0
> > [Wed Aug 30 21:46:44 2023]dmu_objset_sync() at dmu_objset_sync+0x51b/frame 0xfffffe09519aab70
> > dsl_pool_sync() at dsl_pool_sync+0x11d/frame 0xfffffe09519aabf0
> > spa_sync() at spa_sync+0xc68/frame 0xfffffe09519aae20
> > txg_sync_thread() at txg_sync_thread+0x2eb/frame 0xfffffe09519aaef0
> > fork_exit() at fork_exit+0x82/frame 0xfffffe09519aaf30
> > fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe09519aaf30
> > --- trap 0x26d90a2f, rip = 0xbba54c81b25fd8d4, rsp = 0xff60c2f6f9874bcd, rbp = 0x37940e3e9793bd40 --
> > 
> > I have two cores dumped for this panic.
> > 
> > Our previous version is based on 9c0a2d522f3a18fc795a7dd6266d2be2aff4b084, which
> > I guess has the most recent ZFS merge openzfs/zfs@009d3288d.
> > 
> > On Sun, Aug 27, 2023 at 05:09:06AM +0000, Martin Matuska wrote:
> > M> The branch main has been updated by mm:
> > M>
> > M> URL: https://cgit.FreeBSD.org/src/commit/?id=315ee00fa9616b0a192b6834911f98bcf5316a6b <https://cgit.freebsd.org/src/commit/?id=315ee00fa9616b0a192b6834911f98bcf5316a6b>
> > M>
> > M> commit 315ee00fa9616b0a192b6834911f98bcf5316a6b
> > M> Merge: b3a714652ff0 804414aad224
> > M> Author:     Martin Matuska <mm@FreeBSD.org>
> > M> AuthorDate: 2023-08-26 21:20:04 +0000
> > M> Commit:     Martin Matuska <mm@FreeBSD.org>
> > M> CommitDate: 2023-08-26 21:51:42 +0000
> > M>
> > M>     zfs: merge openzfs/zfs@804414aad
> > M>
> > M>     Notable upstream pull request merges:
> > M>       #15024 Add missed DMU_PROJECTUSED_OBJECT prefetch
> > M>       #15029 Do not request data L1 buffers on scan prefetch
> > M>       #15036 FreeBSD: catch up to __FreeBSD_version 1400093
> > M>       #15039 Fix raw receive with different indirect block size
> > M>       #15047 FreeBSD: Fix build on stable/13 after 1302506
> > M>       #15049 Fix the ZFS checksum error histograms with larger record sizes
> > M>       #15052 Reduce bloat in ereport.fs.zfs.checksum events
> > M>       #15056 Avoid extra snprintf() in dsl_deadlist_merge()
> > M>       #15061 Ignore pool ashift property during vdev attachment
> > M>       #15063 Don't panic if setting vdev properties is unsupported for this vdev type
> > M>       #15067 spa_min_alloc should be GCD, not min
> > M>       #15071 Add explicit prefetches to bpobj_iterate()
> > M>       #15072 Adjust prefetch parameters
> > M>       #15076 Refactor dmu_prefetch()
> > M>       #15079 set autotrim default to 'off' everywhere
> > M>       #15080 ZIL: Fix config lock deadlock
> > M>       #15088 metaslab: tuneable to better control force ganging
> > M>       #15096 Avoid waiting in dmu_sync_late_arrival()
> > M>       #15097 BRT should return EOPNOTSUPP
> > M>       #15103 Remove zl_issuer_lock from zil_suspend()
> > M>       #15107 Remove fastwrite mechanism
> > M>       #15113 libzfs: sendrecv: send_progress_thread: handle SIGINFO/SIGUSR1
> > M>       #15122 ZIL: Second attempt to reduce scope of zl_issuer_lock
> > M>       #15129 zpool_vdev_remove() should handle EALREADY error return
> > M>       #15132 ZIL: Replay blocks without next block pointer
> > M>       #15148 zfs_clone_range should return descriptive error codes
> > M>       #15153 ZIL: Avoid dbuf_read() before dmu_sync()
> > M>       #15172 copy_file_range: fix fallback when source create on same txg
> > M>       #15180 Update outdated assertion from zio_write_compress
> > M>
> > M>     Obtained from:  OpenZFS
> > M>     OpenZFS commit: 804414aad224b432590afe3f9ec114ffb49e0f13
> > M>
> > M>  Makefile.inc1                                      |   5 +-
> > M>  cddl/lib/libzfs/Makefile                           |   1 +
> > M>  cddl/lib/libzfs/Makefile.depend                    |   1 +
> > M>  rescue/rescue/Makefile                             |   2 +-
> > M>  rescue/rescue/Makefile.depend                      |   1 +
> > M>  share/mk/src.libnames.mk                           |   2 +-
> > M>  sys/contrib/openzfs/META                           |   6 +-
> > M>  sys/contrib/openzfs/cmd/zdb/zdb.c                  |  77 ++-
> > M>  sys/contrib/openzfs/cmd/zed/agents/zfs_mod.c       |   2 -
> > M>  sys/contrib/openzfs/cmd/zed/agents/zfs_retire.c    |   5 +
> > M>  .../openzfs/cmd/zed/zed.d/statechange-slot_off.sh  |  61 ++
> > M>  sys/contrib/openzfs/cmd/zed/zed.d/zed.rc           |   5 +
> > M>  sys/contrib/openzfs/cmd/ztest.c                    |   2 +-
> > M>  sys/contrib/openzfs/config/Shellcheck.am           |   3 +-
> > M>  sys/contrib/openzfs/config/kernel-blkdev.m4        | 138 +++-
> > M>  .../config/kernel-block-device-operations.m4       |  35 +-
> > M>  .../openzfs/config/kernel-filemap-splice-read.m4   |  25 +
> > M>  .../openzfs/config/kernel-register_sysctl_table.m4 |  27 +
> > M>  .../config/kernel-vfs-extended-file_range.m4       |  50 ++
> > M>  .../openzfs/config/kernel-vfs-file_range.m4        | 164 +++++
> > M>  sys/contrib/openzfs/config/kernel-vfs-iov_iter.m4  |  26 +-
> > M>  sys/contrib/openzfs/config/kernel.m4               |  16 +
> > M>  sys/contrib/openzfs/contrib/debian/changelog       |   6 +
> > M>  .../contrib/debian/openzfs-zfs-test.install        |   2 -
> > M>  .../contrib/debian/openzfs-zfsutils.install        |   2 +
> > M>  .../contrib/dracut/90zfs/zfs-env-bootfs.service.in |  11 +-
> > M>  .../dracut/90zfs/zfs-rollback-bootfs.service.in    |   2 +-
> > M>  .../openzfs/include/os/freebsd/spl/sys/vnode.h     |   6 +-
> > M>  .../include/os/linux/kernel/linux/blkdev_compat.h  |  17 +
> > M>  .../openzfs/include/os/linux/spl/sys/kmem_cache.h  |   8 +
> > M>  .../openzfs/include/os/linux/spl/sys/types.h       |   2 +-
> > M>  sys/contrib/openzfs/include/os/linux/spl/sys/uio.h |  12 +
> > M>  sys/contrib/openzfs/include/os/linux/zfs/sys/zpl.h |  53 ++
> > M>  sys/contrib/openzfs/include/sys/bpobj.h            |   2 +-
> > M>  sys/contrib/openzfs/include/sys/brt.h              |   1 +
> > M>  sys/contrib/openzfs/include/sys/dmu.h              |   5 +
> > M>  sys/contrib/openzfs/include/sys/dmu_impl.h         |   2 -
> > M>  sys/contrib/openzfs/include/sys/dmu_zfetch.h       |   2 -
> > M>  sys/contrib/openzfs/include/sys/fm/fs/zfs.h        |   4 -
> > M>  sys/contrib/openzfs/include/sys/metaslab.h         |   3 -
> > M>  sys/contrib/openzfs/include/sys/metaslab_impl.h    |   6 +-
> > M>  sys/contrib/openzfs/include/sys/spa_impl.h         |   1 +
> > M>  sys/contrib/openzfs/include/sys/vdev_impl.h        |   2 +-
> > M>  sys/contrib/openzfs/include/sys/zil_impl.h         |  44 +-
> > M>  sys/contrib/openzfs/include/sys/zio.h              |   1 -
> > M>  sys/contrib/openzfs/include/sys/zio_checksum.h     |   2 -
> > M>  sys/contrib/openzfs/lib/libzfs/Makefile.am         |   2 +-
> > M>  sys/contrib/openzfs/lib/libzfs/libzfs_pool.c       |   6 +
> > M>  sys/contrib/openzfs/lib/libzfs/libzfs_sendrecv.c   |  95 ++-
> > M>  sys/contrib/openzfs/man/man4/zfs.4                 |  10 +-
> > M>  sys/contrib/openzfs/man/man8/zfs-send.8            |  18 +-
> > M>  sys/contrib/openzfs/man/man8/zpool-events.8        |  23 +-
> > M>  sys/contrib/openzfs/module/Kbuild.in               |   1 +
> > M>  .../openzfs/module/os/freebsd/zfs/zfs_vnops_os.c   |  10 +-
> > M>  sys/contrib/openzfs/module/os/linux/spl/spl-proc.c |  26 +-
> > M>  .../openzfs/module/os/linux/zfs/vdev_disk.c        |  65 +-
> > M>  .../openzfs/module/os/linux/zfs/zfs_ctldir.c       |  26 +-
> > M>  .../openzfs/module/os/linux/zfs/zfs_vfsops.c       |   7 +
> > M>  .../openzfs/module/os/linux/zfs/zfs_vnops_os.c     |   9 +-
> > M>  .../openzfs/module/os/linux/zfs/zfs_znode.c        |   8 +
> > M>  .../openzfs/module/os/linux/zfs/zpl_ctldir.c       |   2 +-
> > M>  sys/contrib/openzfs/module/os/linux/zfs/zpl_file.c |  44 +-
> > M>  .../openzfs/module/os/linux/zfs/zpl_file_range.c   | 272 ++++++++
> > M>  .../openzfs/module/os/linux/zfs/zpl_super.c        |  39 +-
> > M>  sys/contrib/openzfs/module/os/linux/zfs/zvol_os.c  |  28 +-
> > M>  sys/contrib/openzfs/module/zfs/bpobj.c             |  49 +-
> > M>  sys/contrib/openzfs/module/zfs/brt.c               |  43 +-
> > M>  sys/contrib/openzfs/module/zfs/dbuf.c              |  11 +-
> > M>  sys/contrib/openzfs/module/zfs/dmu.c               | 127 ++--
> > M>  sys/contrib/openzfs/module/zfs/dmu_recv.c          |  22 +-
> > M>  sys/contrib/openzfs/module/zfs/dmu_zfetch.c        |  12 +-
> > M>  sys/contrib/openzfs/module/zfs/dnode.c             |  31 +-
> > M>  sys/contrib/openzfs/module/zfs/dsl_deadlist.c      |  14 +-
> > M>  sys/contrib/openzfs/module/zfs/dsl_scan.c          |  17 +-
> > M>  sys/contrib/openzfs/module/zfs/metaslab.c          |  83 +--
> > M>  sys/contrib/openzfs/module/zfs/spa_log_spacemap.c  |   4 +-
> > M>  sys/contrib/openzfs/module/zfs/spa_misc.c          |   1 +
> > M>  sys/contrib/openzfs/module/zfs/vdev.c              |  90 ++-
> > M>  sys/contrib/openzfs/module/zfs/vdev_indirect.c     |   2 +-
> > M>  sys/contrib/openzfs/module/zfs/vdev_raidz.c        |   2 +-
> > M>  sys/contrib/openzfs/module/zfs/zfs_fm.c            |  33 +-
> > M>  sys/contrib/openzfs/module/zfs/zfs_vnops.c         |  46 +-
> > M>  sys/contrib/openzfs/module/zfs/zil.c               | 719 +++++++++------------
> > M>  sys/contrib/openzfs/module/zfs/zio.c               |  45 +-
> > M>  sys/contrib/openzfs/module/zfs/zio_checksum.c      |   2 -
> > M>  sys/contrib/openzfs/module/zfs/zvol.c              |   8 +-
> > M>  sys/contrib/openzfs/tests/runfiles/linux.run       |  11 +
> > M>  .../openzfs/tests/test-runner/bin/zts-report.py.in |  18 +
> > M>  sys/contrib/openzfs/tests/zfs-tests/cmd/.gitignore |   1 +
> > M>  .../openzfs/tests/zfs-tests/cmd/Makefile.am        |   1 +
> > M>  .../openzfs/tests/zfs-tests/cmd/clonefile.c        | 333 ++++++++++
> > M>  sys/contrib/openzfs/tests/zfs-tests/cmd/readmmap.c |   1 +
> > M>  .../openzfs/tests/zfs-tests/include/commands.cfg   |   1 +
> > M>  .../openzfs/tests/zfs-tests/tests/Makefile.am      |  14 +
> > M>  .../functional/block_cloning/block_cloning.kshlib  |  54 ++
> > M>  .../block_cloning/block_cloning_copyfilerange.ksh  |  60 ++
> > M>  .../block_cloning_copyfilerange_cross_dataset.ksh  |  65 ++
> > M>  .../block_cloning_copyfilerange_fallback.ksh       |  86 +++
> > M>  ...ock_cloning_copyfilerange_fallback_same_txg.ksh |  66 ++
> > M>  .../block_cloning_copyfilerange_partial.ksh        |  68 ++
> > M>  .../block_cloning_disabled_copyfilerange.ksh       |  60 ++
> > M>  .../block_cloning_disabled_ficlone.ksh             |  50 ++
> > M>  .../block_cloning_disabled_ficlonerange.ksh        |  50 ++
> > M>  .../block_cloning/block_cloning_ficlone.ksh        |  56 ++
> > M>  .../block_cloning/block_cloning_ficlonerange.ksh   |  56 ++
> > M>  .../block_cloning_ficlonerange_partial.ksh         |  64 ++
> > M>  .../tests/functional/block_cloning/cleanup.ksh     |  34 +
> > M>  .../tests/functional/block_cloning/setup.ksh       |  36 ++
> > M>  .../cli_root/zpool_attach/attach-o_ashift.ksh      |  30 +-
> > M>  .../cli_root/zpool_replace/replace-o_ashift.ksh    |  32 +-
> > M>  .../cli_root/zpool_replace/replace_prop_ashift.ksh |  24 +-
> > M>  sys/modules/zfs/zfs_config.h                       |  53 +-
> > M>  sys/modules/zfs/zfs_gitrev.h                       |   2 +-
> > M>  113 files changed, 3322 insertions(+), 906 deletions(-)
> > M>
> > M> diff --cc Makefile.inc1
> > M> index 8838d31c795a,000000000000..f740cc5abcca
> > M> mode 100644,000000..100644
> > M> --- a/Makefile.inc1
> > M> +++ b/Makefile.inc1
> > M> @@@ -1,3692 -1,0 +1,3695 @@@
> > M>  +#
> > M>  +#
> > M>  +# Make command line options:
> > M>  +# -DNO_CLEANDIR run ${MAKE} clean, instead of ${MAKE} cleandir
> > M>  +# -DNO_CLEAN do not clean at all
> > M>  +# -DDB_FROM_SRC use the user/group databases in src/etc instead of
> > M>  +#     the system database when installing.
> > M>  +# -DNO_SHARE do not go into share subdir
> > M>  +# -DKERNFAST define NO_KERNEL{CONFIG,CLEAN,OBJ}
> > M>  +# -DNO_KERNELCONFIG do not run config in ${MAKE} buildkernel
> > M>  +# -DNO_KERNELCLEAN do not run ${MAKE} clean in ${MAKE} buildkernel
> > M>  +# -DNO_KERNELOBJ do not run ${MAKE} obj in ${MAKE} buildkernel
> > M>  +# -DNO_ROOT install without using root privilege
> > M>  +# -DWITHOUT_CTF do not run the DTrace CTF conversion tools on built objects
> > M>  +# LOCAL_DIRS="list of dirs" to add additional dirs to the SUBDIR list
> > M>  +# LOCAL_ITOOLS="list of tools" to add additional tools to the ITOOLS list
> > M>  +# LOCAL_LIB_DIRS="list of dirs" to add additional dirs to libraries target
> > M>  +# LOCAL_MTREE="list of mtree files" to process to allow local directories
> > M>  +#     to be created before files are installed
> > M>  +# LOCAL_LEGACY_DIRS="list of dirs" to add additional dirs to the legacy
> > M>  +#     target
> > M>  +# LOCAL_BSTOOL_DIRS="list of dirs" to add additional dirs to the
> > M>  +#     bootstrap-tools target
> > M>  +# LOCAL_TOOL_DIRS="list of dirs" to add additional dirs to the build-tools
> > M>  +#     target
> > M>  +# LOCAL_XTOOL_DIRS="list of dirs" to add additional dirs to the
> > M>  +#     cross-tools target
> > M>  +# METALOG="path to metadata log" to write permission and ownership
> > M>  +#     when NO_ROOT is set.  (default: ${DESTDIR}/${DISTDIR}/METALOG,
> > M>  +#           check /etc/make.conf for DISTDIR)
> > M>  +# TARGET="machine" to crossbuild world for a different machine type
> > M>  +# TARGET_ARCH= may be required when a TARGET supports multiple endians
> > M>  +# BUILDENV_SHELL= shell to launch for the buildenv target (def:${SHELL})
> > M>  +# WORLD_FLAGS= additional flags to pass to make(1) during buildworld
> > M>  +# KERNEL_FLAGS= additional flags to pass to make(1) during buildkernel
> > M>  +# SUBDIR_OVERRIDE="list of dirs" to build rather than everything.
> > M>  +#     All libraries and includes, and some build tools will still build.
> > M>  +
> > M>  +#
> > M>  +# The intended user-driven targets are:
> > M>  +# buildworld  - rebuild *everything*, including glue to help do upgrades
> > M>  +# installworld- install everything built by "buildworld"
> > M>  +# checkworld  - run test suite on installed world
> > M>  +# doxygen     - build API documentation of the kernel
> > M>  +#
> > M>  +# Standard targets (not defined here) are documented in the makefiles in
> > M>  +# /usr/share/mk.  These include:
> > M>  +# obj depend all install clean cleandepend cleanobj
> > M>  +
> > M>  +.if !defined(TARGET) || !defined(TARGET_ARCH)
> > M>  +.error Both TARGET and TARGET_ARCH must be defined.
> > M>  +.endif
> > M>  +
> > M>  +.if make(showconfig) || make(test-system-*)
> > M>  +_MKSHOWCONFIG= t
> > M>  +.endif
> > M>  +
> > M>  +SRCDIR?= ${.CURDIR}
> > M>  +LOCALBASE?= /usr/local
> > M>  +TIME_ENV ?= time env
> > M>  +
> > M>  +.include "share/mk/src.tools.mk"
> > M>  +
> > M>  +# Cross toolchain changes must be in effect before bsd.compiler.mk
> > M>  +# so that gets the right CC, and pass CROSS_TOOLCHAIN to submakes.
> > M>  +.if defined(CROSS_TOOLCHAIN)
> > M>  +.if exists(${LOCALBASE}/share/toolchains/${CROSS_TOOLCHAIN}.mk)
> > M>  +.include "${LOCALBASE}/share/toolchains/${CROSS_TOOLCHAIN}.mk"
> > M>  +.elif exists(${CROSS_TOOLCHAIN})
> > M>  +.include "${CROSS_TOOLCHAIN}"
> > M>  +.else
> > M>  +.error CROSS_TOOLCHAIN ${CROSS_TOOLCHAIN} not found
> > M>  +.endif
> > M>  +CROSSENV+=CROSS_TOOLCHAIN="${CROSS_TOOLCHAIN}"
> > M>  +.elif defined(UNIVERSE_TOOLCHAIN)
> > M>  +UNIVERSE_TOOLCHAIN_PATH?=${HOST_OBJTOP}/tmp/usr/bin
> > M>  +XCC?="${UNIVERSE_TOOLCHAIN_PATH}/cc"
> > M>  +XCXX?="${UNIVERSE_TOOLCHAIN_PATH}/c++"
> > M>  +XCPP?="${UNIVERSE_TOOLCHAIN_PATH}/cpp"
> > M>  +XLD?="${UNIVERSE_TOOLCHAIN_PATH}/ld"
> > M>  +.endif
> > M>  +.if defined(CROSS_TOOLCHAIN_PREFIX)
> > M>  +CROSS_COMPILER_PREFIX?=${CROSS_TOOLCHAIN_PREFIX}
> > M>  +.endif
> > M>  +
> > M>  +XCOMPILERS= CC CXX CPP
> > M>  +.for COMPILER in ${XCOMPILERS}
> > M>  +.if defined(CROSS_COMPILER_PREFIX)
> > M>  +X${COMPILER}?= ${CROSS_COMPILER_PREFIX}${${COMPILER}}
> > M>  +.else
> > M>  +X${COMPILER}?= ${${COMPILER}}
> > M>  +.endif
> > M>  +.endfor
> > M>  +# If a full path to an external cross compiler is given, don't build
> > M>  +# a cross compiler.
> > M>  +.if ${XCC:N${CCACHE_BIN}:M/*}
> > M>  +MK_CLANG_BOOTSTRAP= no
> > M>  +# Make sure sub-makes see the option as disabled so the hack in bsd.sys.mk to
> > M>  +# work around incompatible headers in Clang's resource directory is enabled.
> > M>  +.MAKEOVERRIDES+= MK_CLANG_BOOTSTRAP
> > M>  +.endif
> > M>  +
> > M>  +# Pull in compiler metadata from buildworld/toolchain if possible to avoid
> > M>  +# running CC from bsd.compiler.mk.
> > M>  +.if make(installworld) || make(install) || make(distributeworld) || \
> > M>  +    make(stageworld)
> > M>  +.-include "${OBJTOP}/toolchain-metadata.mk"
> > M>  +.if !defined(_LOADED_TOOLCHAIN_METADATA)
> > M>  +.error A build is required first.  You may have the wrong MAKEOBJDIRPREFIX set.
> > M>  +.endif
> > M>  +.endif
> > M>  +
> > M>  +# Pull in COMPILER_TYPE and COMPILER_FREEBSD_VERSION early. Pull it from the
> > M>  +# tree to be friendlier to foreign OS builds. It's safe to do so unconditionally
> > M>  +# here since we will always have the right make, unlike in src/Makefile
> > M>  +# Don't include bsd.linker.mk yet until XBINUTILS is handled (after src.opts.mk)
> > M>  +_NO_INCLUDE_LINKERMK= t
> > M>  +# We also want the X_COMPILER* variables if we are using an external toolchain.
> > M>  +_WANT_TOOLCHAIN_CROSS_VARS= t
> > M>  +.include "share/mk/bsd.compiler.mk"
> > M>  +.undef _NO_INCLUDE_LINKERMK
> > M>  +.undef _WANT_TOOLCHAIN_CROSS_VARS
> > M>  +# src.opts.mk depends on COMPILER_FEATURES
> > M>  +.include "share/mk/src.opts.mk"
> > M>  +
> > M>  +.if ${TARGET} == ${MACHINE}
> > M>  +TARGET_CPUTYPE?=${CPUTYPE}
> > M>  +.else
> > M>  +TARGET_CPUTYPE?=
> > M>  +.endif
> > M>  +.if !empty(TARGET_CPUTYPE)
> > M>  +_TARGET_CPUTYPE=${TARGET_CPUTYPE}
> > M>  +.else
> > M>  +_TARGET_CPUTYPE=dummy
> > M>  +.endif
> > M>  +.if ${TARGET} == "arm"
> > M>  +.if ${TARGET_CPUTYPE:M*soft*} == ""
> > M>  +TARGET_TRIPLE_ABI= gnueabihf
> > M>  +.else
> > M>  +TARGET_TRIPLE_ABI= gnueabi
> > M>  +.endif
> > M>  +.endif
> > M>  +MACHINE_TRIPLE_ABI?= unknown
> > M>  +MACHINE_TRIPLE?=${MACHINE_ARCH:S/amd64/x86_64/}-${MACHINE_TRIPLE_ABI}-freebsd${OS_REVISION}
> > M>  +TARGET_TRIPLE_ABI?= unknown
> > M>  +TARGET_TRIPLE?= ${TARGET_ARCH:S/amd64/x86_64/}-${TARGET_TRIPLE_ABI}-freebsd${OS_REVISION}
> > M>  +KNOWN_ARCHES?= aarch64/arm64 \
> > M>  + amd64 \
> > M>  + armv6/arm \
> > M>  + armv7/arm \
> > M>  + i386 \
> > M>  + powerpc \
> > M>  + powerpc64/powerpc \
> > M>  + powerpc64le/powerpc \
> > M>  + powerpcspe/powerpc \
> > M>  + riscv64/riscv
> > M>  +
> > M>  +.if ${TARGET} == ${TARGET_ARCH}
> > M>  +_t= ${TARGET}
> > M>  +.else
> > M>  +_t= ${TARGET_ARCH}/${TARGET}
> > M>  +.endif
> > M>  +.for _t in ${_t}
> > M>  +.if empty(KNOWN_ARCHES:M${_t})
> > M>  +.error Unknown target ${TARGET_ARCH}:${TARGET}.
> > M>  +.endif
> > M>  +.endfor
> > M>  +
> > M>  +.if ${TARGET_ARCH} == "amd64"
> > M>  +LIBCOMPAT_INCLUDE_DIRS+= i386
> > M>  +.elif ${TARGET_ARCH} == "aarch64"
> > M>  +LIBCOMPAT_INCLUDE_DIRS+= arm
> > M>  +.endif
> > M>  +
> > M>  +.if ${.MAKE.OS} != "FreeBSD"
> > M>  +CROSSBUILD_HOST=${.MAKE.OS}
> > M>  +.if ${.MAKE.OS} != "Linux" && ${.MAKE.OS} != "Darwin"
> > M>  +.warning Unsupported crossbuild system: ${.MAKE.OS}. Build will probably fail!
> > M>  +.endif
> > M>  +# We need to force NO_ROOT/DB_FROM_SRC builds when building on other operating
> > M>  +# systems since the BSD.foo.dist specs contain users and groups that do not
> > M>  +# exist by default on a Linux/MacOS system.
> > M>  +NO_ROOT:= 1
> > M>  +DB_FROM_SRC:= 1
> > M>  +.export NO_ROOT
> > M>  +.endif
> > M>  +
> > M>  +# If all targets are disabled for system llvm then don't expect it to work
> > M>  +# for cross-builds.
> > M>  +.if !defined(TOOLS_PREFIX) && ${MK_LLVM_TARGET_ALL} == "no" && \
> > M>  +    ${MACHINE} != ${TARGET} && ${MACHINE_ARCH} != ${TARGET_ARCH} && \
> > M>  +    !make(showconfig)
> > M>  +MK_SYSTEM_COMPILER= no
> > M>  +MK_SYSTEM_LINKER= no
> > M>  +.endif
> > M>  +
> > M>  +# Handle external binutils.
> > M>  +.if defined(CROSS_TOOLCHAIN_PREFIX)
> > M>  +CROSS_BINUTILS_PREFIX?=${CROSS_TOOLCHAIN_PREFIX}
> > M>  +.endif
> > M>  +XBINUTILS= AS AR ELFCTL LD NM OBJCOPY RANLIB SIZE STRINGS STRIPBIN
> > M>  +.for BINUTIL in ${XBINUTILS}
> > M>  +.if defined(CROSS_BINUTILS_PREFIX) && \
> > M>  +    exists(${CROSS_BINUTILS_PREFIX}/${${BINUTIL}})
> > M>  +X${BINUTIL}?= ${CROSS_BINUTILS_PREFIX:C,/*$,,}/${${BINUTIL}}
> > M>  +.else
> > M>  +X${BINUTIL}?= ${${BINUTIL}}
> > M>  +.endif
> > M>  +.endfor
> > M>  +
> > M>  +# If a full path to an external linker is given, don't build lld.
> > M>  +.if ${XLD:M/*}
> > M>  +MK_LLD_BOOTSTRAP= no
> > M>  +.endif
> > M>  +
> > M>  +# We also want the X_LINKER* variables if we are using an external toolchain.
> > M>  +_WANT_TOOLCHAIN_CROSS_VARS= t
> > M>  +.include "share/mk/bsd.linker.mk"
> > M>  +.undef _WANT_TOOLCHAIN_CROSS_VARS
> > M>  +
> > M>  +# Begin WITH_SYSTEM_COMPILER / WITH_SYSTEM_LD
> > M>  +
> > M>  +# WITH_SYSTEM_COMPILER - Pull in needed values and make a decision.
> > M>  +
> > M>  +# Check if there is a local compiler that can satisfy as an external compiler.
> > M>  +# Which compiler is expected to be used?
> > M>  +.if ${MK_CLANG_BOOTSTRAP} == "yes"
> > M>  +WANT_COMPILER_TYPE= clang
> > M>  +.else
> > M>  +WANT_COMPILER_TYPE=
> > M>  +.endif
> > M>  +
> > M>  +.if !defined(WANT_COMPILER_FREEBSD_VERSION) && !make(showconfig) && \
> > M>  +    !make(test-system-linker)
> > M>  +.if ${WANT_COMPILER_TYPE} == "clang"
> > M>  +WANT_COMPILER_FREEBSD_VERSION_FILE= lib/clang/freebsd_cc_version.h
> > M>  +WANT_COMPILER_FREEBSD_VERSION!= \
> > M>  + awk '$$2 == "FREEBSD_CC_VERSION" {printf("%d\n", $$3)}' \
> > M>  + ${SRCDIR}/${WANT_COMPILER_FREEBSD_VERSION_FILE} || echo unknown
> > M>  +WANT_COMPILER_VERSION_FILE= lib/clang/include/clang/Basic/Version.inc
> > M>  +WANT_COMPILER_VERSION!= \
> > M>  + awk '$$2 == "CLANG_VERSION" {split($$3, a, "."); print a[1] * 10000 + a[2] * 100 + a[3]}' \
> > M>  + ${SRCDIR}/${WANT_COMPILER_VERSION_FILE} || echo unknown
> > M>  +.endif
> > M>  +.export WANT_COMPILER_FREEBSD_VERSION WANT_COMPILER_VERSION
> > M>  +.endif # !defined(WANT_COMPILER_FREEBSD_VERSION)
> > M>  +
> > M>  +# It needs to be the same revision as we would build for the bootstrap.
> > M>  +# If the expected vs CC is different then we can't skip.
> > M>  +# GCC cannot be used for cross-arch yet.  For clang we pass -target later if
> > M>  +# TARGET_ARCH!=MACHINE_ARCH.
> > M>  +.if ${MK_SYSTEM_COMPILER} == "yes" && \
> > M>  +    defined(WANT_COMPILER_FREEBSD_VERSION) && \
> > M>  +    ${MK_CLANG_BOOTSTRAP} == "yes" && \
> > M>  +    !make(xdev*) && \
> > M>  +    ${X_COMPILER_TYPE} == ${WANT_COMPILER_TYPE} && \
> > M>  +    (${X_COMPILER_TYPE} == "clang" || ${TARGET_ARCH} == ${MACHINE_ARCH}) && \
> > M>  +    ${X_COMPILER_VERSION} == ${WANT_COMPILER_VERSION} && \
> > M>  +    ${X_COMPILER_FREEBSD_VERSION} == ${WANT_COMPILER_FREEBSD_VERSION}
> > M>  +# Everything matches, disable the bootstrap compiler.
> > M>  +MK_CLANG_BOOTSTRAP= no
> > M>  +USING_SYSTEM_COMPILER= yes
> > M>  +.endif # ${WANT_COMPILER_TYPE} == ${COMPILER_TYPE}
> > M>  +
> > M>  +# WITH_SYSTEM_LD - Pull in needed values and make a decision.
> > M>  +
> > M>  +# Check if there is a local linker that can satisfy as an external linker.
> > M>  +# Which linker is expected to be used?
> > M>  +.if ${MK_LLD_BOOTSTRAP} == "yes"
> > M>  +WANT_LINKER_TYPE= lld
> > M>  +.else
> > M>  +WANT_LINKER_TYPE=
> > M>  +.endif
> > M>  +
> > M>  +.if !defined(WANT_LINKER_FREEBSD_VERSION) && !make(showconfig) && \
> > M>  +    !make(test-system-compiler)
> > M>  +.if ${WANT_LINKER_TYPE} == "lld"
> > M>  +WANT_LINKER_FREEBSD_VERSION_FILE= lib/clang/include/lld/Common/Version.inc
> > M>  +WANT_LINKER_FREEBSD_VERSION!= \
> > M>  + awk '$$2 == "LLD_FREEBSD_VERSION" {print $$3}' \
> > M>  + ${SRCDIR}/${WANT_LINKER_FREEBSD_VERSION_FILE} || echo unknown
> > M>  +WANT_LINKER_VERSION_FILE= lib/clang/include/lld/Common/Version.inc
> > M>  +WANT_LINKER_VERSION!= \
> > M>  + awk '$$2 == "LLD_VERSION_STRING" {gsub("\"", "", $$3); split($$3, a, "."); print a[1] * 10000 + a[2] * 100 + a[3]}' \
> > M>  + ${SRCDIR}/${WANT_LINKER_VERSION_FILE} || echo unknown
> > M>  +.else
> > M>  +WANT_LINKER_FREEBSD_VERSION_FILE=
> > M>  +WANT_LINKER_FREEBSD_VERSION=
> > M>  +.endif
> > M>  +.export WANT_LINKER_FREEBSD_VERSION WANT_LINKER_VERSION
> > M>  +.endif # !defined(WANT_LINKER_FREEBSD_VERSION)
> > M>  +
> > M>  +.if ${MK_SYSTEM_LINKER} == "yes" && \
> > M>  +    defined(WANT_LINKER_FREEBSD_VERSION) && \
> > M>  +    (${MK_LLD_BOOTSTRAP} == "yes") && \
> > M>  +    !make(xdev*) && \
> > M>  +    ${X_LINKER_TYPE} == ${WANT_LINKER_TYPE} && \
> > M>  +    ${X_LINKER_VERSION} == ${WANT_LINKER_VERSION} && \
> > M>  +    ${X_LINKER_FREEBSD_VERSION} == ${WANT_LINKER_FREEBSD_VERSION}
> > M>  +# Everything matches, disable the bootstrap linker.
> > M>  +MK_LLD_BOOTSTRAP= no
> > M>  +USING_SYSTEM_LINKER= yes
> > M>  +.endif # ${WANT_LINKER_TYPE} == ${LINKER_TYPE}
> > M>  +
> > M>  +# WITH_SYSTEM_COMPILER / WITH_SYSTEM_LINKER - Handle defaults and debug.
> > M>  +USING_SYSTEM_COMPILER?= no
> > M>  +USING_SYSTEM_LINKER?= no
> > M>  +
> > M>  +TEST_SYSTEM_COMPILER_VARS= \
> > M>  + USING_SYSTEM_COMPILER MK_SYSTEM_COMPILER \
> > M>  + MK_CROSS_COMPILER MK_CLANG_BOOTSTRAP \
> > M>  + WANT_COMPILER_TYPE WANT_COMPILER_VERSION WANT_COMPILER_VERSION_FILE \
> > M>  + WANT_COMPILER_FREEBSD_VERSION WANT_COMPILER_FREEBSD_VERSION_FILE \
> > M>  + CC COMPILER_TYPE COMPILER_FEATURES COMPILER_VERSION \
> > M>  + COMPILER_FREEBSD_VERSION \
> > M>  + XCC X_COMPILER_TYPE X_COMPILER_FEATURES X_COMPILER_VERSION \
> > M>  + X_COMPILER_FREEBSD_VERSION
> > M>  +TEST_SYSTEM_LINKER_VARS= \
> > M>  + USING_SYSTEM_LINKER MK_SYSTEM_LINKER \
> > M>  + MK_LLD_BOOTSTRAP \
> > M>  + WANT_LINKER_TYPE WANT_LINKER_VERSION WANT_LINKER_VERSION_FILE \
> > M>  + WANT_LINKER_FREEBSD_VERSION WANT_LINKER_FREEBSD_VERSION_FILE \
> > M>  + LD LINKER_TYPE LINKER_FEATURES LINKER_VERSION \
> > M>  + LINKER_FREEBSD_VERSION \
> > M>  + XLD X_LINKER_TYPE X_LINKER_FEATURES X_LINKER_VERSION \
> > M>  + X_LINKER_FREEBSD_VERSION
> > M>  +
> > M>  +.for _t in compiler linker
> > M>  +test-system-${_t}: .PHONY
> > M>  +.for v in ${TEST_SYSTEM_${_t:tu}_VARS}
> > M>  + ${_+_}@printf "%-35s= %s\n" "${v}" "${${v}}"
> > M>  +.endfor
> > M>  +.endfor
> > M>  +.if (make(buildworld) || make(buildkernel) || make(kernel-toolchain) || \
> > M>  +    make(toolchain) || make(_cross-tools))
> > M>  +.if ${USING_SYSTEM_COMPILER} == "yes"
> > M>  +.info SYSTEM_COMPILER: Determined that CC=${CC} matches the source tree.  Not bootstrapping a cross-compiler.
> > M>  +.elif ${MK_CLANG_BOOTSTRAP} == "yes"
> > M>  +.info SYSTEM_COMPILER: libclang will be built for bootstrapping a cross-compiler.
> > M>  +.endif
> > M>  +.if ${USING_SYSTEM_LINKER} == "yes"
> > M>  +.info SYSTEM_LINKER: Determined that LD=${LD} matches the source tree.  Not bootstrapping a cross-linker.
> > M>  +.elif ${MK_LLD_BOOTSTRAP} == "yes"
> > M>  +.info SYSTEM_LINKER: libclang will be built for bootstrapping a cross-linker.
> > M>  +.endif
> > M>  +.endif
> > M>  +
> > M>  +# End WITH_SYSTEM_COMPILER / WITH_SYSTEM_LD
> > M>  +
> > M>  +# Store some compiler metadata for use in installworld where we don't
> > M>  +# want to invoke CC at all.
> > M>  +_TOOLCHAIN_METADATA_VARS= COMPILER_VERSION \
> > M>  + COMPILER_TYPE \
> > M>  + COMPILER_FEATURES \
> > M>  + COMPILER_FREEBSD_VERSION \
> > M>  + COMPILER_RESOURCE_DIR \
> > M>  + LINKER_VERSION \
> > M>  + LINKER_FEATURES \
> > M>  + LINKER_TYPE \
> > M>  + LINKER_FREEBSD_VERSION
> > M>  +toolchain-metadata.mk: .PHONY .META
> > M>  + @: > ${.TARGET}
> > M>  + @echo ".info Using cached toolchain metadata from build at $$(hostname) on $$(date)" \
> > M>  +     > ${.TARGET}
> > M>  + @echo "_LOADED_TOOLCHAIN_METADATA=t" >> ${.TARGET}
> > M>  +.for v in ${_TOOLCHAIN_METADATA_VARS}
> > M>  + @echo "${v}=${${v}}" >> ${.TARGET}
> > M>  + @echo "X_${v}=${X_${v}}" >> ${.TARGET}
> > M>  +.endfor
> > M>  + @echo ".export ${_TOOLCHAIN_METADATA_VARS}" >> ${.TARGET}
> > M>  + @echo ".export ${_TOOLCHAIN_METADATA_VARS:C,^,X_,}" >> ${.TARGET}
> > M>  +
> > M>  +
> > M>  +# We must do lib/ and libexec/ before bin/ in case of a mid-install error to
> > M>  +# keep the users system reasonably usable.  For static->dynamic root upgrades,
> > M>  +# we don't want to install a dynamic binary without rtld and the needed
> > M>  +# libraries.  More commonly, for dynamic root, we don't want to install a
> > M>  +# binary that requires a newer library version that hasn't been installed yet.
> > M>  +# This ordering is not a guarantee though.  The only guarantee of a working
> > M>  +# system here would require fine-grained ordering of all components based
> > M>  +# on their dependencies.
> > M>  +.if !empty(SUBDIR_OVERRIDE)
> > M>  +SUBDIR= ${SUBDIR_OVERRIDE}
> > M>  +.else
> > M>  +SUBDIR= lib libexec
> > M>  +# Add LOCAL_LIB_DIRS, but only if they will not be picked up as a SUBDIR
> > M>  +# of a LOCAL_DIRS directory.  This allows LOCAL_DIRS=foo and
> > M>  +# LOCAL_LIB_DIRS=foo/lib to behave as expected.
> > M>  +.for _DIR in ${LOCAL_DIRS:M*/} ${LOCAL_DIRS:N*/:S|$|/|}
> > M>  +_REDUNDANT_LIB_DIRS+=    ${LOCAL_LIB_DIRS:M${_DIR}*}
> > M>  +.endfor
> > M>  +.for _DIR in ${LOCAL_LIB_DIRS}
> > M>  +.if ${_DIR} == ".WAIT" || (empty(_REDUNDANT_LIB_DIRS:M${_DIR}) && exists(${.CURDIR}/${_DIR}/Makefile))
> > M>  +SUBDIR+= ${_DIR}
> > M>  +.endif
> > M>  +.endfor
> > M>  +.if !defined(NO_ROOT) && (make(installworld) || make(install))
> > M>  +# Ensure libraries are installed before progressing.
> > M>  +SUBDIR+=.WAIT
> > M>  +.endif
> > M>  +SUBDIR+=bin
> > M>  +.if ${MK_CDDL} != "no"
> > M>  +SUBDIR+=cddl
> > M>  +.endif
> > M>  +SUBDIR+=gnu include
> > M>  +.if ${MK_KERBEROS} != "no"
> > M>  +SUBDIR+=kerberos5
> > M>  +.endif
> > M>  +.if ${MK_RESCUE} != "no"
> > M>  +SUBDIR+=rescue
> > M>  +.endif
> > M>  +SUBDIR+=sbin
> > M>  +.if ${MK_CRYPT} != "no"
> > M>  +SUBDIR+=secure
> > M>  +.endif
> > M>  +.if !defined(NO_SHARE)
> > M>  +SUBDIR+=share
> > M>  +.endif
> > M>  +.if ${MK_BOOT} != "no"
> > M>  +SUBDIR+=stand
> > M>  +.endif
> > M>  +SUBDIR+=sys usr.bin usr.sbin
> > M>  +.if ${MK_TESTS} != "no"
> > M>  +SUBDIR+= tests
> > M>  +.endif
> > M>  +
> > M>  +# Local directories are built in parallel with the base system directories.
> > M>  +# Users may insert a .WAIT directive at the beginning or elsewhere within
> > M>  +# the LOCAL_DIRS and LOCAL_LIB_DIRS lists as needed.
> > M>  +.for _DIR in ${LOCAL_DIRS}
> > M>  +.if ${_DIR} == ".WAIT" || exists(${.CURDIR}/${_DIR}/Makefile)
> > M>  +SUBDIR+= ${_DIR}
> > M>  +.endif
> > M>  +.endfor
> > M>  +
> > M>  +# We must do etc/ last as it hooks into building the man whatis file
> > M>  +# by calling 'makedb' in share/man.  This is only relevant for
> > M>  +# install/distribute so they build the whatis file after every manpage is
> > M>  +# installed.
> > M>  +.if make(installworld) || make(install)
> > M>  +SUBDIR+=.WAIT
> > M>  +.endif
> > M>  +SUBDIR+=etc
> > M>  +
> > M>  +.endif # !empty(SUBDIR_OVERRIDE)
> > M>  +
> > M>  +.if defined(NOCLEAN)
> > M>  +.warning The src.conf WITHOUT_CLEAN option can now be used instead of NOCLEAN.
> > M>  +MK_CLEAN:= no
> > M>  +.endif
> > M>  +.if defined(NO_CLEAN)
> > M>  +.info The src.conf WITHOUT_CLEAN option can now be used instead of NO_CLEAN.
> > M>  +MK_CLEAN:= no
> > M>  +.endif
> > M>  +.if defined(NO_CLEANDIR)
> > M>  +CLEANDIR= clean cleandepend
> > M>  +.else
> > M>  +CLEANDIR= cleandir
> > M>  +.endif
> > M>  +
> > M>  +.if defined(WORLDFAST)
> > M>  +MK_CLEAN:= no
> > M>  +NO_OBJWALK= t
> > M>  +.endif
> > M>  +
> > M>  +.if ${MK_META_MODE} == "yes"
> > M>  +# If filemon is used then we can rely on the build being incremental-safe.
> > M>  +# The .meta files will also track the build command and rebuild should
> > M>  +# it change.
> > M>  +.if empty(.MAKE.MODE:Mnofilemon)
> > M>  +MK_CLEAN:= no
> > M>  +.endif
> > M>  +.endif
> > M>  +.if defined(NO_OBJWALK) || ${MK_AUTO_OBJ} == "yes"
> > M>  +NO_OBJWALK= t
> > M>  +NO_KERNELOBJ= t
> > M>  +.endif
> > M>  +.if !defined(NO_OBJWALK)
> > M>  +_obj= obj
> > M>  +.endif
> > M>  +
> > M>  +LOCAL_TOOL_DIRS?=
> > M>  +PACKAGEDIR?= ${DESTDIR}/${DISTDIR}
> > M>  +
> > M>  +.if empty(SHELL:M*csh*)
> > M>  +BUILDENV_SHELL?=${SHELL}
> > M>  +.else
> > M>  +BUILDENV_SHELL?=/bin/sh
> > M>  +.endif
> > M>  +
> > M>  +.if !defined(_MKSHOWCONFIG)
> > M>  +.if !defined(VCS_REVISION) || empty(VCS_REVISION)
> > M>  +.if !defined(SVNVERSION_CMD) || empty(SVNVERSION_CMD)
> > M>  +. for _D in ${PATH:S,:, ,g}
> > M>  +.  if exists(${_D}/svnversion)
> > M>  +SVNVERSION_CMD?=${_D}/svnversion
> > M>  +.  endif
> > M>  +.  if exists(${_D}/svnliteversion)
> > M>  +SVNVERSION_CMD?=${_D}/svnliteversion
> > M>  +.  endif
> > M>  +. endfor
> > M>  +.endif
> > M>  +.if defined(SVNVERSION_CMD) && !empty(SVNVERSION_CMD)
> > M>  +_VCS_REVISION?= $$(eval ${SVNVERSION_CMD} ${SRCDIR})
> > M>  +. if !empty(_VCS_REVISION)
> > M>  +VCS_REVISION= $$(echo r${_VCS_REVISION})
> > M>  +.export VCS_REVISION
> > M>  +. endif
> > M>  +.endif
> > M>  +.endif
> > M>  +
> > M>  +.if !defined(GIT_CMD) || empty(GIT_CMD)
> > M>  +. for _P in /usr/bin /usr/local/bin
> > M>  +.  if exists(${_P}/git)
> > M>  +GIT_CMD=   ${_P}/git
> > M>  +.  endif
> > M>  +. endfor
> > M>  +.export GIT_CMD
> > M>  +.endif
> > M>  +
> > M>  +.if !defined(OSRELDATE)
> > M>  +.if exists(/usr/include/osreldate.h)
> > M>  +OSRELDATE!= awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
> > M>  + /usr/include/osreldate.h
> > M>  +.else
> > M>  +OSRELDATE= 0
> > M>  +.endif
> > M>  +.export OSRELDATE
> > M>  +.endif
> > M>  +
> > M>  +# Set VERSION for CTFMERGE to use via the default CTFFLAGS=-L VERSION.
> > M>  +.for _V in BRANCH REVISION TYPE
> > M>  +.if !defined(_${_V})
> > M>  +_${_V}!= eval $$(awk '/^${_V}=/{print}' ${SRCTOP}/sys/conf/newvers.sh); echo $$${_V}
> > M>  +.export _${_V}
> > M>  +.endif
> > M>  +.endfor
> > M>  +.if !defined(SRCRELDATE)
> > M>  +SRCRELDATE!= awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
> > M>  + ${SRCDIR}/sys/sys/param.h
> > M>  +.export SRCRELDATE
> > M>  +.endif
> > M>  +.if !defined(VERSION)
> > M>  +VERSION= FreeBSD ${_REVISION}-${_BRANCH:C/-p[0-9]+$//} ${TARGET_ARCH} ${SRCRELDATE}
> > M>  +.export VERSION
> > M>  +.endif
> > M>  +MAJOR_REVISION= ${_REVISION:R}
> > M>  +
> > M>  +.if !defined(PKG_VERSION)
> > M>  +_STRTIMENOW= %Y%m%d%H%M%S
> > M>  +_TIMENOW= ${_STRTIMENOW:gmtime}
> > M>  +.if ${_BRANCH:MCURRENT*} || ${_BRANCH:MSTABLE*} || ${_BRANCH:MPRERELEASE*}
> > M>  +EXTRA_REVISION= .snap${_TIMENOW}
> > M>  +.elif ${_BRANCH:MALPHA*}
> > M>  +EXTRA_REVISION= .a${_BRANCH:C/ALPHA([0-9]+).*/\1/}.${_TIMENOW}
> > M>  +.elif ${_BRANCH:MBETA*}
> > M>  +EXTRA_REVISION= .b${_BRANCH:C/BETA([0-9]+).*/\1/}.${_TIMENOW}
> > M>  +.elif ${_BRANCH:MRC*}
> > M>  +EXTRA_REVISION= .rc${_BRANCH:C/RC([0-9]+).*/\1/}.${_TIMENOW}
> > M>  +.elif ${_BRANCH:M*-p*}
> > M>  +EXTRA_REVISION= p${_BRANCH:C/.*-p([0-9]+$)/\1/}
> > M>  +.endif
> > M>  +PKG_VERSION:= ${MAJOR_REVISION}${EXTRA_REVISION:C/[[:space:]]//g}
> > M>  +.endif
> > M>  +.endif # !defined(PKG_VERSION)
> > M>  +
> > M>  +.if !defined(PKG_TIMESTAMP)
> > M>  +TIMEEPOCHNOW= %s
> > M>  +SOURCE_DATE_EPOCH= ${TIMEEPOCHNOW:gmtime}
> > M>  +.else
> > M>  +SOURCE_DATE_EPOCH= ${PKG_TIMESTAMP}
> > M>  +.endif
> > M>  +
> > M>  +PKG_NAME_PREFIX?= FreeBSD
> > M>  +PKG_MAINTAINER?= re@FreeBSD.org
> > M>  +PKG_WWW?= https://www.FreeBSD.org <https://www.freebsd.org/>
> > M>  +.export PKG_NAME_PREFIX
> > M>  +.export PKG_MAINTAINER
> > M>  +.export PKG_WWW
> > M>  +
> > M>  +.if !defined(_MKSHOWCONFIG)
> > M>  +_CPUTYPE!= MAKEFLAGS= CPUTYPE=${_TARGET_CPUTYPE} ${MAKE} -f /dev/null \
> > M>  + -m ${.CURDIR}/share/mk MK_AUTO_OBJ=no -V CPUTYPE
> > M>  +.if ${_CPUTYPE} != ${_TARGET_CPUTYPE}
> > M>  +.error CPUTYPE global should be set with ?=.
> > M>  +.endif
> > M>  +.endif
> > M>  +.if make(buildworld)
> > M>  +BUILD_ARCH!= uname -p
> > M>  +# On some Linux systems uname -p returns "unknown" so skip this check there.
> > M>  +# This check only exists to tell people to use TARGET_ARCH instead of
> > M>  +# MACHINE_ARCH so skipping it when crossbuilding on non-FreeBSD should be fine.
> > M>  +.if ${MACHINE_ARCH} != ${BUILD_ARCH} && ${.MAKE.OS} == "FreeBSD"
> > M>  +.error To cross-build, set TARGET_ARCH.
> > M>  +.endif
> > M>  +.endif
> > M>  +WORLDTMP?= ${OBJTOP}/tmp
> > M>  +BPATH= ${CCACHE_WRAPPER_PATH_PFX}${WORLDTMP}/legacy/usr/sbin:${WORLDTMP}/legacy/usr/bin:${WORLDTMP}/legacy/bin:${WORLDTMP}/legacy/usr/libexec
> > M>  +XPATH= ${WORLDTMP}/bin:${WORLDTMP}/usr/sbin:${WORLDTMP}/usr/bin
> > M>  +
> > M>  +# When building we want to find the cross tools before the host tools in ${BPATH}.
> > M>  +# We also need to add UNIVERSE_TOOLCHAIN_PATH so that we can find the shared
> > M>  +# toolchain files (clang, lld, etc.) during make universe/tinderbox
> > M>  +STRICTTMPPATH= ${XPATH}:${BPATH}:${UNIVERSE_TOOLCHAIN_PATH}
> > M>  +# We should not be using tools from /usr/bin accidentally since this could cause
> > M>  +# the build to break on other systems that don't have that tool. For now we
> > M>  +# still allow using the old behaviour (inheriting $PATH) if
> > M>  +# BUILD_WITH_STRICT_TMPPATH is set to 0 but this will eventually be removed.
> > M>  +
> > M>  +# Currently strict $PATH can cause build failures. Once the remaining issues
> > M>  +# have been resolved it will be turned on by default.
> > M>  +BUILD_WITH_STRICT_TMPPATH?=0
> > M>  +.if defined(CROSSBUILD_HOST)
> > M>  +# When building on non-FreeBSD we can't rely on the tools in /usr/bin being compatible
> > M>  +# with what FreeBSD expects. Therefore we only use tools from STRICTTMPPATH
> > M>  +# during the world build stage. We build most tools during the bootstrap-tools
> > M>  +# phase but symlink host tools that are known to work instead of building them
> > M>  +BUILD_WITH_STRICT_TMPPATH:=1
> > M>  +.endif
> > M>  +.if ${BUILD_WITH_STRICT_TMPPATH} != 0
> > M>  +TMPPATH= ${STRICTTMPPATH}
> > M>  +.else
> > M>  +TMPPATH= ${STRICTTMPPATH}:${PATH}
> > M>  +.endif
> > M>  +
> > M>  +#
> > M>  +# Avoid running mktemp(1) unless actually needed.
> > M>  +# It may not be functional, e.g., due to new ABI
> > M>  +# when in the middle of installing over this system.
> > M>  +#
> > M>  +.if make(distributeworld) || make(installworld) || make(stageworld)
> > M>  +.if ${BUILD_WITH_STRICT_TMPPATH} != 0
> > M>  +MKTEMP=${WORLDTMP}/legacy/usr/bin/mktemp
> > M>  +.if !exists(${MKTEMP})
> > M>  +.error mktemp binary doesn't exist in expected location: ${MKTEMP}
> > M>  +.endif
> > M>  +.else
> > M>  +MKTEMP=mktemp
> > M>  +.endif
> > M>  +INSTALLTMP!= ${MKTEMP} -d -u -t install
> > M>  +
> > M>  +.if ${.MAKE.OS} == "FreeBSD"
> > M>  +# When building on FreeBSD we always copy the host tools instead of linking
> > M>  +# into INSTALLTMP to avoid issues with incompatible libraries (see r364030).
> > M>  +# Note: we could create links if we don't intend to update the current machine.
> > M>  +INSTALLTMP_COPY_HOST_TOOL=cp
> > M>  +.else
> > M>  +# However, this is not necessary on Linux/macOS. Additionally, copying the host
> > M>  +# tools to another directory with cp results in AMFI Launch Constraint
> > M>  +# Violations on macOS Ventura as part of its System Integrity Protection.
> > M>  +INSTALLTMP_COPY_HOST_TOOL=ln -s
> > M>  +.endif
> > M>  +.endif
> > M>  +
> > M>  +.if make(stagekernel) || make(distributekernel)
> > M>  +TAGS+= kernel
> > M>  +PACKAGE= kernel
> > M>  +.endif
> > M>  +
> > M>  +#
> > M>  +# Building a world goes through the following stages
> > M>  +#
> > M>  +# 1. legacy stage [BMAKE]
> > M>  +# This stage is responsible for creating compatibility
> > M>  +# shims that are needed by the bootstrap-tools,
> > M>  +# build-tools and cross-tools stages. These are generally
> > M>  +# APIs that tools from one of those three stages need to
> > M>  +# build that aren't present on the host.
> > M>  +# 1. bootstrap-tools stage [BMAKE]
> > M>  +# This stage is responsible for creating programs that
> > M>  +# are needed for backward compatibility reasons. They
> > M>  +# are not built as cross-tools.
> > M>  +# 2. build-tools stage [TMAKE]
> > M>  +# This stage is responsible for creating the object
> > M>  +# tree and building any tools that are needed during
> > M>  +# the build process. Some programs are listed during
> > M>  +# this phase because they build binaries to generate
> > M>  +# files needed to build these programs. This stage also
> > M>  +# builds the 'build-tools' target rather than 'all'.
> > M>  +# 3. cross-tools stage [XMAKE]
> > M>  +# This stage is responsible for creating any tools that
> > M>  +# are needed for building the system. A cross-compiler is one
> > M>  +# of them. This differs from build tools in two ways:
> > M>  +# 1. the 'all' target is built rather than 'build-tools'
> > M>  +# 2. these tools are installed into TMPPATH for stage 4.
> > M>  +# 4. world stage [WMAKE]
> > M>  +# This stage actually builds the world.
> > M>  +# 5. install stage (optional) [IMAKE]
> > M>  +# This stage installs a previously built world.
> > M>  +#
> > M>  +
> > M>  +BOOTSTRAPPING?= 0
> > M>  +# Keep these in sync
> > M>  +MINIMUM_SUPPORTED_OSREL?= 1104001
> > M>  +MINIMUM_SUPPORTED_REL?= 11.4
> > M>  +
> > M>  +# Common environment for world related stages
> > M>  +CROSSENV+= \
> > M>  + MACHINE_ARCH=${TARGET_ARCH} \
> > M>  + MACHINE=${TARGET} \
> > M>  + CPUTYPE=${TARGET_CPUTYPE}
> > M>  +.if ${MK_META_MODE} != "no"
> > M>  +# Don't rebuild build-tools targets during normal build.
> > M>  +CROSSENV+= BUILD_TOOLS_META=.NOMETA
> > M>  +.endif
> > M>  +.if defined(TARGET_CFLAGS)
> > M>  +CROSSENV+= ${TARGET_CFLAGS}
> > M>  +.endif
> > M>  +.if (${TARGET} != ${MACHINE} && !defined(WITH_LOCAL_MODULES)) || \
> > M>  +    defined(WITHOUT_LOCAL_MODULES)
> > M>  +CROSSENV+= LOCAL_MODULES=
> > M>  +.endif
> > M>  +
> > M>  +BOOTSTRAPPING_OSRELDATE?=${OSRELDATE}
> > M>  +
> > M>  +# bootstrap-tools stage
> > M>  +BMAKEENV= INSTALL="sh ${.CURDIR}/tools/install.sh" \
> > M>  + TOOLS_PREFIX=${TOOLS_PREFIX_UNDEF:U${WORLDTMP}} \
> > M>  + PATH=${BPATH:Q}:${PATH:Q} \
> > M>  + WORLDTMP=${WORLDTMP} \
> > M>  + MAKEFLAGS="-m ${.CURDIR}/tools/build/mk ${.MAKEFLAGS}"
> > M>  +# need to keep this in sync with targets/pseudo/bootstrap-tools/Makefile
> > M>  +BSARGS= DESTDIR= \
> > M>  + OBJTOP='${WORLDTMP}/obj-tools' \
> > M>  + OBJROOT='$${OBJTOP}/' \
> > M>  + UNIVERSE_TOOLCHAIN_PATH=${UNIVERSE_TOOLCHAIN_PATH} \
> > M>  + MAKEOBJDIRPREFIX= \
> > M>  + BOOTSTRAPPING=${BOOTSTRAPPING_OSRELDATE} \
> > M>  + BWPHASE=${.TARGET:C,^_,,} \
> > M>  + -DNO_CPU_CFLAGS \
> > M>  + -DNO_LINT \
> > M>  + -DNO_PIC \
> > M>  + -DNO_SHARED \
> > M>  + MK_ASAN=no \
> > M>  + MK_CTF=no \
> > M>  + MK_CLANG_EXTRAS=no \
> > M>  + MK_CLANG_FORMAT=no \
> > M>  + MK_CLANG_FULL=no \
> > M>  + MK_HTML=no \
> > M>  + MK_MAN=no \
> > M>  + MK_PROFILE=no \
> > M>  + MK_RETPOLINE=no \
> > M>  + MK_SSP=no \
> > M>  + MK_TESTS=no \
> > M>  + MK_UBSAN=no \
> > M>  + MK_WERROR=no \
> > M>  + MK_INCLUDES=yes \
> > M>  + MK_MAN_UTILS=yes
> > M>  +
> > M>  +BMAKE= \
> > M>  + ${TIME_ENV} ${BMAKEENV} ${MAKE} ${WORLD_FLAGS} -f Makefile.inc1 \
> > M>  + ${BSARGS}
> > M>  +.if empty(.MAKEOVERRIDES:MMK_LLVM_TARGET_ALL)
> > M>  +BMAKE+= MK_LLVM_TARGET_ALL=no
> > M>  +.endif
> > M>  +
> > M>  +# build-tools stage
> > M>  +TMAKE= \
> > M>  + ${TIME_ENV} ${BMAKEENV} ${MAKE} ${WORLD_FLAGS} -f Makefile.inc1 \
> > M>  + TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH} \
> > M>  + DESTDIR= \
> > M>  + BOOTSTRAPPING=${BOOTSTRAPPING_OSRELDATE} \
> > M>  + BWPHASE=${.TARGET:C,^_,,} \
> > M>  + -DNO_CPU_CFLAGS \
> > M>  + -DNO_LINT \
> > M>  + MK_ASAN=no \
> > M>  + MK_CTF=no \
> > M>  + MK_CLANG_EXTRAS=no \
> > M>  + MK_CLANG_FORMAT=no \
> > M>  + MK_CLANG_FULL=no \
> > M>  + MK_LLDB=no \
> > M>  + MK_RETPOLINE=no \
> > M>  + MK_SSP=no \
> > M>  + MK_TESTS=no \
> > M>  + MK_UBSAN=no \
> > M>  + MK_WERROR=no
> > M>  +
> > M>  +# cross-tools stage
> > M>  +# TOOLS_PREFIX set in BMAKE
> > M>  +XMAKE= ${BMAKE} \
> > M>  + TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH} \
> > M>  + MK_LLDB=no \
> > M>  + MK_LLVM_BINUTILS=no \
> > M>  + MK_TESTS=no
> > M>  +
> > M>  +# kernel-tools stage
> > M>  +KTMAKEENV= INSTALL="sh ${.CURDIR}/tools/install.sh" \
> > M>  + PATH=${BPATH:Q}:${PATH:Q} \
> > M>  + WORLDTMP=${WORLDTMP} \
> > M>  + MAKEFLAGS="-m ${.CURDIR}/tools/build/mk ${.MAKEFLAGS}"
> > M>  +
> > M>  +KTMAKE= ${TIME_ENV} \
> > M>  + TOOLS_PREFIX=${TOOLS_PREFIX_UNDEF:U${WORLDTMP}} \
> > M>  + ${KTMAKEENV} ${MAKE} ${WORLD_FLAGS} -f Makefile.inc1 \
> > M>  + DESTDIR= \
> > M>  + OBJTOP='${WORLDTMP}/obj-kernel-tools' \
> > M>  + OBJROOT='$${OBJTOP}/' \
> > M>  + UNIVERSE_TOOLCHAIN_PATH=${UNIVERSE_TOOLCHAIN_PATH} \
> > M>  + MAKEOBJDIRPREFIX= \
> > M>  + BOOTSTRAPPING=${BOOTSTRAPPING_OSRELDATE} \
> > M>  + -DNO_CPU_CFLAGS \
> > M>  + -DNO_LINT \
> > M>  + -DNO_PIC \
> > M>  + -DNO_SHARED \
> > M>  + MK_CTF=no \
> > M>  + MK_HTML=no \
> > M>  + MK_MAN=no \
> > M>  + MK_PROFILE=no \
> > M>  + MK_SSP=no \
> > M>  + MK_RETPOLINE=no \
> > M>  + MK_WERROR=no
> > M>  +
> > M>  +# world stage
> > M>  +WMAKEENV= ${CROSSENV} \
> > M>  + INSTALL="${INSTALL_CMD} -U" \
> > M>  + PATH=${TMPPATH:Q} \
> > M>  + SYSROOT=${WORLDTMP}
> > M>  +
> > M>  +# make hierarchy
> > M> *** 5431 LINES SKIPPED ***
> > 
> 
> -- 
> Alexander Motin
>