[MacPorts] #49898: libpixman: no destroot found

MacPorts noreply at macports.org
Fri Dec 4 19:23:34 PST 2015


#49898: libpixman: no destroot found
--------------------------+--------------------------------
  Reporter:  laila_awn@…  |      Owner:  macports-tickets@…
      Type:  defect       |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.3.4
Resolution:  invalid      |   Keywords:
      Port:  libpixman    |
--------------------------+--------------------------------

Comment (by laila_awn@…):

 Replying to [comment:8 laila_awn@…]:
 > Replying to [comment:7 ryandesign@…]:
 > > /usr/bin/tar is supposed to be BSD tar, but the help output you
 provided shows that on your system it is GNU tar. You will need to replace
 it with BSD tar, either from your backups or by reinstalling OS X. I don't
 know if the 10.6.8 update includes an updated version of tar; if it does,
 then it would fix this problem for you. However, it would be good if you
 could explain how this occurred. Did you deliberately replace /usr/bin/tar
 with GNU tar at some point? If not, how did it happen, and what else
 happened that we haven't discovered yet?
 >
 > I do not recall replacing BSD tar with GNU tar. Below is my terminal
 history showing all the commands, it might help you know what happened.
 >
 > {{{
 >     1  /Users/lailaheshamal-madhagi/Downloads/unnamed ; exit;
 >     2  /Users/lailaheshamal-madhagi/Downloads/unnamed ; exit;
 >     3  /Users/lailaheshamal-madhagi/Downloads/unnamed ; exit;
 >     4  /Users/lailaheshamal-madhagi/Downloads/unnamed\ 3 ; exit;
 >     5  /Users/lailaheshamal-madhagi/Downloads/unnamed\ 3 ; exit;
 >     6  /Users/lailaheshamal-madhagi/Downloads/unnamed\ 15 ; exit;
 >     7  /Users/lailaheshamal-madhagi/Downloads/unnamed\ 2 ; exit;
 >     8  /Users/lailaheshamal-madhagi/Downloads/unnamed ; exit;
 >     9  top/.lili
 >    10  /Volumes/NO\ NAME/Hadeel\ BD/Marwa\ 6 ; exit;
 >    11  /Volumes/NO\ NAME/reactor/Dr.\ Borissova/ZnO\ seeds\ \(oven\
 sample,\ trial\) ; exit;
 >    12  sudo port install xorg-server demeter
 >    13   sudo port install xorg-server demeter
 >    14   sudo port install xorg-server demeter
 >    15   sudo port install xorg-server demeter
 >    16   sudo port install xorg-server demeter
 >    17  cd /opt/local/bin
 >    18  sudo port -v selfupdate
 >    19  sudo port install xorg-server demeter
 >    20  sudo port -v install xorg-server demeter
 >    21
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_libpixman/libpixman/main.log
 >    22
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_libpixman/libpixman/main.log
 >    23  :debug:main changing euid/egid - current euid: 0 - current egid:
 0
 >    24  :debug:main egid changed to: 501
 >    25  :debug:main euid changed to: 502
 >    26  :debug:main Executing org.macports.main (libpixman)
 >    27  :debug:main Privilege de-escalation not attempted as not running
 as root.
 >    28  :debug:main Skipping completed org.macports.archivefetch
 (libpixman)
 >    29  :debug:main Privilege de-escalation not attempted as not running
 as root.
 >    30  :debug:main Skipping completed org.macports.fetch (libpixman)
 >    31  :debug:main Privilege de-escalation not attempted as not running
 as root.
 >    32  :debug:main Skipping completed org.macports.checksum (libpixman)
 >    33  :debug:main Privilege de-escalation not attempted as not running
 as root.
 >    34  :debug:main Skipping completed org.macports.extract (libpixman)
 >    35  :debug:main Privilege de-escalation not attempted as not running
 as root.
 >    36  :debug:main Skipping completed org.macports.patch (libpixman)
 >    37  :debug:main Privilege de-escalation not attempted as not running
 as root.
 >    38  :debug:main Skipping completed org.macports.configure (libpixman)
 >    39  :debug:main Privilege de-escalation not attempted as not running
 as root.
 >    40  :debug:main Skipping completed org.macports.build (libpixman)
 >    41  :debug:main Privilege de-escalation not attempted as not running
 as root.
 >    42  :debug:main Skipping completed org.macports.destroot (libpixman)
 >    43  :debug:main Privilege de-escalation not attempted as not running
 as root.
 >    44  :debug:install install phase started at Thu Dec  3 22:07:56 GMT
 2015
 >    45  :notice:install --->  Installing libpixman @0.32.8_0
 >    46  :debug:install Can't run install on this port without elevated
 privileges. Escalating privileges back to root.
 >    47  :debug:install euid changed to: 0. egid changed to: 0.
 >    48  :debug:install Executing org.macports.install (libpixman)
 >    49  :debug:install Using /usr/bin/tar
 >    50  :debug:install Using /usr/bin/bzip2
 >    51  :error:install org.macports.install for port libpixman returned:
 no destroot found at:
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_libpixman/libpixman/work/destroot
 >    52  :debug:install Error code: NONE
 >    53  :debug:install Backtrace: no destroot found at:
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_libpixman/libpixman/work/destroot
 >    54      while executing
 >    55  "create_archive $location $portarchivetype"
 >    56      (procedure "portinstall::install_main" line 22)
 >    57      invoked from within
 >    58  "portinstall::install_main org.macports.install"
 >    59      ("eval" body line 1)
 >    60      invoked from within
 >    61  "eval $procedure $targetname"
 >    62  :info:install Warning: targets not executed for libpixman:
 org.macports.activate org.macports.install
 >    63  :error:install Failed to install libpixman
 >    64  :debug:install Registry error: xorg-fixesproto not registered as
 installed & active.
 >    65      invoked from within
 >    66  "registry_active $subport"
 >    67      invoked from within
 >    68  "$workername eval registry_active \$subport"
 >    69  :notice:install Please see the log file for port libpixman for
 details:
 >    70
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_libpixman/libpixman/main.log
 >    71  sudo port install xorg-server demeter
 >    72  sudo port install xorg-server demeter
 >    73  sudo port install xorg-server demeter
 >    74  sudo port clean libpixman
 >    75  sudo port install xorg-server demeter
 >    76  sudo port clean libpixman
 >    77  sudo port install xorg-server demeter
 >    78  sudo port clean libpixman
 >    79  sudo port clean libpixman
 >    80  sudo port install xorg-server demeter
 >    81  sudo port clean
 >    82  xcode-select --install
 >    83  sudo port install xorg-server demeter
 >    84  sudo port clean libpixman
 >    85  sudo port install xorg-server demeter
 >    86  sudo port clean libpixman-0.32.8_0.darwin_10.x86_64.tbz2
 >    87  sudo port clean libpixman
 >    88  sudo port install demeter
 >    89  sudo port clean libpixman quartz-wm pkgconfig
 >    90  sudo port install xorg-server demeter
 >    91  sudo port clean libpixman
 >    92  sudo port selfupdate
 >    93  sudo port install xorg-server demeter
 >    94  sudo port clean --all libpixman
 >    95  sudo port install xorg-server demeter
 >    96  sudo port selfupdate
 >    97  sudo port install xorg-server demeter
 >    98  sudo port clean libpixman
 >    99  sudo port install xorg-server demeter
 >   100  sudo port install libpixman
 >   101  sudo port clean --all libpixman
 >   102  sudo port install xorg-server demeter
 >   103  /usr/bin/tar --help
 >   104  sudo port install xorg-server demeter
 >
 > }}}

 I have managed to update my operating system to OS X 10.6.8 and I have
 tried installing demeter again but I faced the same error. I am sorry for
 any inconvenience casued but I hope that you can help with this
 {{{
 sudo port install xorg-server demeter
 Password:
 --->  Computing dependencies for xorg-server

 --->  Dependencies to be installed: libpixman quartz-wm pkgconfig libiconv
 xorg-libAppleWM xorg-applewmproto xorg-libXext xorg-libX11 xorg-kbproto
 xorg-libXau xorg-xproto xorg-libXdmcp xorg-libxcb python27 bzip2 db48
 gettext expat ncurses libedit openssl zlib python2_select python_select
 sqlite3 xorg-libpthread-stubs xorg-xcb-proto libxml2 xz xorg-xextproto
 xorg-libXinerama xorg-xineramaproto xorg-libXrandr xorg-randrproto xrender
 xorg-renderproto xorg-util-macros xinit mkfontdir mkfontscale freetype
 libpng xorg-libfontenc xauth xorg-libXmu xorg-libXt xorg-libsm xorg-libice
 xrdb xset xorg-libXfontcache xorg-fontcacheproto xorg-libXp xorg-
 printproto xorg-libXxf86misc xorg-xf86miscproto xkeyboard-config xkbcomp
 xorg-libxkbfile xorg-fonts font-adobe-100dpi bdftopcf xorg-libXfont xorg-
 fontsproto fontconfig xorg-font-util font-adobe-75dpi font-adobe-utopia-
 100dpi font-adobe-utopia-75dpi font-adobe-utopia-type1 font-alias font-
 arabic-misc font-bh-100dpi font-bh-75dpi font-bh-lucidatypewriter-100dpi
 font-bh-lucidatypewriter-75dpi font-bh-ttf font-bh-type1 font-bitstream-
 100dpi font-bitstream-75dpi font-bitstream-speedo font-bitstream-type1
 font-cronyx-cyrillic font-cursor-misc font-daewoo-misc font-dec-misc font-
 ibm-type1 font-isas-misc font-jis-misc font-micro-misc font-misc-cyrillic
 font-misc-ethiopic font-misc-meltho font-misc-misc font-mutt-misc font-
 schumacher-misc font-screen-cyrillic font-sony-misc font-sun-misc font-
 winitzki-cyrillic font-xfree86-type1 xorg-encodings xorg-libXfixes xorg-
 fixesproto
 --->  Installing libpixman @0.32.8_0
 Error: org.macports.install for port libpixman returned: no destroot found
 at:
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_libpixman/libpixman/work/destroot
 Error: Failed to install libpixman
 Please see the log file for port libpixman for details:
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_libpixman/libpixman/main.log
 Error: The following dependencies were not installed: libpixman quartz-wm
 pkgconfig libiconv xorg-libAppleWM xorg-applewmproto xorg-libXext xorg-
 libX11 xorg-kbproto xorg-libXau xorg-xproto xorg-libXdmcp xorg-libxcb
 python27 bzip2 db48 gettext expat ncurses libedit openssl zlib
 python2_select python_select sqlite3 xorg-libpthread-stubs xorg-xcb-proto
 libxml2 xz xorg-xextproto xorg-libXinerama xorg-xineramaproto xorg-
 libXrandr xorg-randrproto xrender xorg-renderproto xorg-util-macros xinit
 mkfontdir mkfontscale freetype libpng xorg-libfontenc xauth xorg-libXmu
 xorg-libXt xorg-libsm xorg-libice xrdb xset xorg-libXfontcache xorg-
 fontcacheproto xorg-libXp xorg-printproto xorg-libXxf86misc xorg-
 xf86miscproto xkeyboard-config xkbcomp xorg-libxkbfile xorg-fonts font-
 adobe-100dpi bdftopcf xorg-libXfont xorg-fontsproto fontconfig xorg-font-
 util font-adobe-75dpi font-adobe-utopia-100dpi font-adobe-utopia-75dpi
 font-adobe-utopia-type1 font-alias font-arabic-misc font-bh-100dpi font-
 bh-75dpi font-bh-lucidatypewriter-100dpi font-bh-lucidatypewriter-75dpi
 font-bh-ttf font-bh-type1 font-bitstream-100dpi font-bitstream-75dpi font-
 bitstream-speedo font-bitstream-type1 font-cronyx-cyrillic font-cursor-
 misc font-daewoo-misc font-dec-misc font-ibm-type1 font-isas-misc font-
 jis-misc font-micro-misc font-misc-cyrillic font-misc-ethiopic font-misc-
 meltho font-misc-misc font-mutt-misc font-schumacher-misc font-screen-
 cyrillic font-sony-misc font-sun-misc font-winitzki-cyrillic font-
 xfree86-type1 xorg-encodings xorg-libXfixes xorg-fixesproto
 To report a bug, follow the instructions in the guide:
     http://guide.macports.org/#project.tickets
 Error: Processing of port xorg-server failed
 LAILA-HESHAM-AL-MADHAGIs-MacBook-Pro:~ lailaheshamal-madhagi$
 LAILA-HESHAM-AL-MADHAGIs-MacBook-Pro:~ lailaheshamal-madhagi$ sudo port
 clean libpixman
 --->  Cleaning libpixman
 LAILA-HESHAM-AL-MADHAGIs-MacBook-Pro:~ lailaheshamal-madhagi$ sudo port
 install xorg-server demeter
 --->  Computing dependencies for xorg-server

 --->  Dependencies to be installed: libpixman quartz-wm pkgconfig libiconv
 xorg-libAppleWM xorg-applewmproto xorg-libXext xorg-libX11 xorg-kbproto
 xorg-libXau xorg-xproto xorg-libXdmcp xorg-libxcb python27 bzip2 db48
 gettext expat ncurses libedit openssl zlib python2_select python_select
 sqlite3 xorg-libpthread-stubs xorg-xcb-proto libxml2 xz xorg-xextproto
 xorg-libXinerama xorg-xineramaproto xorg-libXrandr xorg-randrproto xrender
 xorg-renderproto xorg-util-macros xinit mkfontdir mkfontscale freetype
 libpng xorg-libfontenc xauth xorg-libXmu xorg-libXt xorg-libsm xorg-libice
 xrdb xset xorg-libXfontcache xorg-fontcacheproto xorg-libXp xorg-
 printproto xorg-libXxf86misc xorg-xf86miscproto xkeyboard-config xkbcomp
 xorg-libxkbfile xorg-fonts font-adobe-100dpi bdftopcf xorg-libXfont xorg-
 fontsproto fontconfig xorg-font-util font-adobe-75dpi font-adobe-utopia-
 100dpi font-adobe-utopia-75dpi font-adobe-utopia-type1 font-alias font-
 arabic-misc font-bh-100dpi font-bh-75dpi font-bh-lucidatypewriter-100dpi
 font-bh-lucidatypewriter-75dpi font-bh-ttf font-bh-type1 font-bitstream-
 100dpi font-bitstream-75dpi font-bitstream-speedo font-bitstream-type1
 font-cronyx-cyrillic font-cursor-misc font-daewoo-misc font-dec-misc font-
 ibm-type1 font-isas-misc font-jis-misc font-micro-misc font-misc-cyrillic
 font-misc-ethiopic font-misc-meltho font-misc-misc font-mutt-misc font-
 schumacher-misc font-screen-cyrillic font-sony-misc font-sun-misc font-
 winitzki-cyrillic font-xfree86-type1 xorg-encodings xorg-libXfixes xorg-
 fixesproto
 --->  Fetching archive for libpixman
 --->  Attempting to fetch libpixman-0.32.8_0.darwin_10.x86_64.tbz2 from
 http://mse.uk.packages.macports.org/sites/packages.macports.org/libpixman
 --->  Attempting to fetch libpixman-0.32.8_0.darwin_10.x86_64.tbz2.rmd160
 from
 http://mse.uk.packages.macports.org/sites/packages.macports.org/libpixman
 --->  Installing libpixman @0.32.8_0
 Error: org.macports.install for port libpixman returned: /usr/bin/tar:
 invalid option -- q
 Try `/usr/bin/tar --help' for more information.
 Error: Failed to install libpixman
 Please see the log file for port libpixman for details:
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_libpixman/libpixman/main.log
 Error: The following dependencies were not installed: libpixman quartz-wm
 pkgconfig libiconv xorg-libAppleWM xorg-applewmproto xorg-libXext xorg-
 libX11 xorg-kbproto xorg-libXau xorg-xproto xorg-libXdmcp xorg-libxcb
 python27 bzip2 db48 gettext expat ncurses libedit openssl zlib
 python2_select python_select sqlite3 xorg-libpthread-stubs xorg-xcb-proto
 libxml2 xz xorg-xextproto xorg-libXinerama xorg-xineramaproto xorg-
 libXrandr xorg-randrproto xrender xorg-renderproto xorg-util-macros xinit
 mkfontdir mkfontscale freetype libpng xorg-libfontenc xauth xorg-libXmu
 xorg-libXt xorg-libsm xorg-libice xrdb xset xorg-libXfontcache xorg-
 fontcacheproto xorg-libXp xorg-printproto xorg-libXxf86misc xorg-
 xf86miscproto xkeyboard-config xkbcomp xorg-libxkbfile xorg-fonts font-
 adobe-100dpi bdftopcf xorg-libXfont xorg-fontsproto fontconfig xorg-font-
 util font-adobe-75dpi font-adobe-utopia-100dpi font-adobe-utopia-75dpi
 font-adobe-utopia-type1 font-alias font-arabic-misc font-bh-100dpi font-
 bh-75dpi font-bh-lucidatypewriter-100dpi font-bh-lucidatypewriter-75dpi
 font-bh-ttf font-bh-type1 font-bitstream-100dpi font-bitstream-75dpi font-
 bitstream-speedo font-bitstream-type1 font-cronyx-cyrillic font-cursor-
 misc font-daewoo-misc font-dec-misc font-ibm-type1 font-isas-misc font-
 jis-misc font-micro-misc font-misc-cyrillic font-misc-ethiopic font-misc-
 meltho font-misc-misc font-mutt-misc font-schumacher-misc font-screen-
 cyrillic font-sony-misc font-sun-misc font-winitzki-cyrillic font-
 xfree86-type1 xorg-encodings xorg-libXfixes xorg-fixesproto
 To report a bug, follow the instructions in the guide:
     http://guide.macports.org/#project.tickets
 Error: Processing of port xorg-server failed
 LAILA-HESHAM-AL-MADHAGIs-MacBook-Pro:~ lailaheshamal-madhagi$
 LAILA-HESHAM-AL-MADHAGIs-MacBook-Pro:~ lailaheshamal-madhagi$ /usr/bin/tar
 --help
 GNU `tar' saves many files together into a single tape or disk archive,
 and
 can restore individual files from the archive.

 Usage: /usr/bin/tar [OPTION]... [FILE]...

 Examples:
   /usr/bin/tar -cf archive.tar foo bar  # Create archive.tar from files
 foo and bar.
   /usr/bin/tar -tvf archive.tar         # List all files in archive.tar
 verbosely.
   /usr/bin/tar -xf archive.tar          # Extract all files from
 archive.tar.

 If a long option shows an argument as mandatory, then it is mandatory
 for the equivalent short option also.  Similarly for optional arguments.

 Main operation mode:
   -t, --list              list the contents of an archive
   -x, --extract, --get    extract files from an archive
   -c, --create            create a new archive
   -d, --diff, --compare   find differences between archive and file system
   -r, --append            append files to the end of an archive
   -u, --update            only append files newer than copy in archive
   -A, --catenate          append tar files to an archive
       --concatenate       same as -A
       --delete            delete from the archive (not on mag tapes!)

 Operation modifiers:
   -W, --verify               attempt to verify the archive after writing
 it
       --remove-files         remove files after adding them to the archive
   -k, --keep-old-files       don't replace existing files when extracting
       --overwrite            overwrite existing files when extracting
       --overwrite-dir        overwrite directory metadata when extracting
   -U, --unlink-first         remove each file prior to extracting over it
       --recursive-unlink     empty hierarchies prior to extracting
 directory
   -S, --sparse               handle sparse files efficiently
   -O, --to-stdout            extract files to standard output
   -G, --incremental          handle old GNU-format incremental backup
   -g, --listed-incremental=FILE
                              handle new GNU-format incremental backup
       --ignore-failed-read   do not exit with nonzero on unreadable files

 Handling of file attributes:
       --owner=NAME             force NAME as owner for added files
       --group=NAME             force NAME as group for added files
       --mode=CHANGES           force (symbolic) mode CHANGES for added
 files
       --atime-preserve         don't change access times on dumped files
   -m, --modification-time      don't extract file modified time
       --same-owner             try extracting files with the same
 ownership
       --no-same-owner          extract files as yourself
       --numeric-owner          always use numbers for user/group names
   -p, --same-permissions       extract permissions information
       --no-same-permissions    do not extract permissions information
       --preserve-permissions   same as -p
   -s, --same-order             sort names to extract to match archive
       --preserve-order         same as -s
       --preserve               same as both -p and -s

 Device selection and switching:
   -f, --file=ARCHIVE             use archive file or device ARCHIVE
       --force-local              archive file is local even if has a colon
       --rsh-command=COMMAND      use remote COMMAND instead of rsh
   -[0-7][lmh]                    specify drive and density
   -M, --multi-volume             create/list/extract multi-volume archive
   -L, --tape-length=NUM          change tape after writing NUM x 1024
 bytes
   -F, --info-script=FILE         run script at end of each tape (implies
 -M)
       --new-volume-script=FILE   same as -F FILE
       --volno-file=FILE          use/update the volume number in FILE

 Device blocking:
   -b, --blocking-factor=BLOCKS   BLOCKS x 512 bytes per record
       --record-size=SIZE         SIZE bytes per record, multiple of 512
   -i, --ignore-zeros             ignore zeroed blocks in archive (means
 EOF)
   -B, --read-full-records        reblock as we read (for 4.2BSD pipes)

 Archive format selection:
   -V, --label=NAME                   create archive with volume name NAME
               PATTERN                at list/extract time, a globbing
 PATTERN
   -o, --old-archive, --portability   write a V7 format archive
       --posix                        write a POSIX format archive
   -j, --bzip2                        filter the archive through bzip2
   -z, --gzip, --ungzip               filter the archive through gzip
   -Z, --compress, --uncompress       filter the archive through compress
       --use-compress-program=PROG    filter through PROG (must accept -d)

 Local file selection:
   -C, --directory=DIR          change to directory DIR
   -T, --files-from=NAME        get names to extract or create from file
 NAME
       --null                   -T reads null-terminated names, disable -C
       --exclude=PATTERN        exclude files, given as a PATTERN
   -X, --exclude-from=FILE      exclude patterns listed in FILE
       --anchored               exclude patterns match file name start
 (default)
       --no-anchored            exclude patterns match after any /
       --ignore-case            exclusion ignores case
       --no-ignore-case         exclusion is case sensitive (default)
       --wildcards              exclude patterns use wildcards (default)
       --no-wildcards           exclude patterns are plain strings
       --wildcards-match-slash  exclude pattern wildcards match '/'
 (default)
       --no-wildcards-match-slash exclude pattern wildcards do not match
 '/'
   -P, --absolute-names         don't strip leading `/'s from file names
   -h, --dereference            dump instead the files symlinks point to
       --no-recursion           avoid descending automatically in
 directories
   -l, --one-file-system        stay in local file system when creating
 archive
   -K, --starting-file=NAME     begin at file NAME in the archive
   -N, --newer=DATE             only store files newer than DATE
       --newer-mtime=DATE       compare date and time when data changed
 only
       --after-date=DATE        same as -N
       --backup[=CONTROL]       backup before removal, choose version
 control
       --suffix=SUFFIX          backup before removal, override usual
 suffix

 Informative output:
       --help            print this help, then exit
       --version         print tar program version number, then exit
   -v, --verbose         verbosely list files processed
       --checkpoint      print directory names while reading the archive
       --totals          print total bytes written while creating archive
   -R, --block-number    show block number within archive with each message
   -w, --interactive     ask for confirmation for every action
       --confirmation    same as -w

 The backup suffix is `~', unless set with --suffix or
 SIMPLE_BACKUP_SUFFIX.
 The version control may be set with --backup or VERSION_CONTROL, values
 are:

   t, numbered     make numbered backups
   nil, existing   numbered if numbered backups exist, simple otherwise
   never, simple   always make simple backups

 GNU tar cannot read nor produce `--posix' archives.  If POSIXLY_CORRECT
 is set in the environment, GNU extensions are disallowed with `--posix'.
 Support for POSIX is only partially implemented, don't count on it yet.
 ARCHIVE may be FILE, HOST:FILE or USER at HOST:FILE; DATE may be a textual
 date
 or a file name starting with `/' or `.', in which case the file's date is
 used.
 *This* `tar' defaults to `-f- -b20'.

 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/49898#comment:9>
MacPorts <https://www.macports.org/>
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