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3 # Copyright (C) 1996-2021 Free Software Foundation, Inc.
5 # This file is free software; the Free Software Foundation
6 # gives unlimited permission to copy and/or distribute it,
7 # with or without modifications, as long as this notice is preserved.
9 # This program is distributed in the hope that it will be useful,
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328 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
330 # This file is free software; the Free Software Foundation
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351 # This file is free software; the Free Software Foundation
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368 # Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
370 # Copyright (C) 1997-2021 Free Software Foundation, Inc.
372 # This file is free software; the Free Software Foundation
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402 # Helper functions for option handling. -*- Autoconf -*-
404 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
406 # This file is free software; the Free Software Foundation
407 # gives unlimited permission to copy and/or distribute it,
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435 # Copyright (C) 1996-2021 Free Software Foundation, Inc.
437 # This file is free software; the Free Software Foundation
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516 # Copyright (C) 2009-2021 Free Software Foundation, Inc.
518 # This file is free software; the Free Software Foundation
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576 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
578 # This file is free software; the Free Software Foundation
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604 # Copyright (C) 2006-2021 Free Software Foundation, Inc.
606 # This file is free software; the Free Software Foundation
607 # gives unlimited permission to copy and/or distribute it,
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610 # _AM_SUBST_NOTMAKE(VARIABLE)
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621 # Check how to create a tarball. -*- Autoconf -*-
623 # Copyright (C) 2004-2021 Free Software Foundation, Inc.
625 # This file is free software; the Free Software Foundation
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632 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
634 # Substitute a variable $(am__tar) that is a command
635 # writing to stdout a FORMAT-tarball containing the directory
637 # tardir=directory && $(am__tar) > result.tar
639 # Substitute a variable $(am__untar) that extract such
640 # a tarball read from stdin.
641 # $(am__untar) < result.tar
643 AC_DEFUN([_AM_PROG_TAR],
644 [# Always define AMTAR for backward compatibility. Yes, it's still used
645 # in the wild :-( We should find a proper way to deprecate it ...
646 AC_SUBST([AMTAR], ['$${TAR-tar}'])
648 # We'll loop over all known methods to create a tar archive until one works.
649 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
652 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
656 [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
657 # There is notably a 21 bits limit for the UID and the GID. In fact,
658 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
660 am_max_uid=2097151 # 2^21 - 1
661 am_max_gid=$am_max_uid
662 # The $UID and $GID variables are not portable, so we need to resort
663 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
664 # below are definitely unexpected, so allow the users to see them
665 # (that is, avoid stderr redirection).
666 am_uid=`id -u || echo unknown`
667 am_gid=`id -g || echo unknown`
668 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
669 if test $am_uid -le $am_max_uid; then
675 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
676 if test $am_gid -le $am_max_gid; then
686 [m4_fatal([Unknown tar format])])
688 AC_MSG_CHECKING([how to create a $1 tar archive])
690 # Go ahead even if we have the value already cached. We do so because we
691 # need to set the values for the 'am__tar' and 'am__untar' variables.
692 _am_tools=${am_cv_prog_tar_$1-$_am_tools}
694 for _am_tool in $_am_tools; do
697 for _am_tar in tar gnutar gtar; do
698 AM_RUN_LOG([$_am_tar --version]) && break
700 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
701 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
702 am__untar="$_am_tar -xf -"
705 # Must skip GNU tar: if it does not support --format= it doesn't create
706 # ustar tarball either.
707 (tar --version) >/dev/null 2>&1 && continue
708 am__tar='tar chf - "$$tardir"'
709 am__tar_='tar chf - "$tardir"'
713 am__tar='pax -L -x $1 -w "$$tardir"'
714 am__tar_='pax -L -x $1 -w "$tardir"'
718 am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
719 am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
720 am__untar='cpio -i -H $1 -d'
729 # If the value was cached, stop now. We just wanted to have am__tar
731 test -n "${am_cv_prog_tar_$1}" && break
733 # tar/untar a dummy directory, and stop if the command works.
736 echo GrepMe > conftest.dir/file
737 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
739 if test -s conftest.tar; then
740 AM_RUN_LOG([$am__untar <conftest.tar])
741 AM_RUN_LOG([cat conftest.dir/file])
742 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
747 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
748 AC_MSG_RESULT([$am_cv_prog_tar_$1])])
751 AC_SUBST([am__untar])