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3 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
5 # This file is free software; the Free Software Foundation
6 # gives unlimited permission to copy and/or distribute it,
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343 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
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364 # Copyright (C) 2003-2018 Free Software Foundation, Inc.
366 # This file is free software; the Free Software Foundation
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383 # Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
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422 # Helper functions for option handling. -*- Autoconf -*-
424 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
426 # This file is free software; the Free Software Foundation
427 # gives unlimited permission to copy and/or distribute it,
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453 # Check to make sure that the build environment is sane. -*- Autoconf -*-
455 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
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596 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
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624 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
626 # This file is free software; the Free Software Foundation
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633 # This macro is traced by Automake.
634 AC_DEFUN([_AM_SUBST_NOTMAKE])
636 # AM_SUBST_NOTMAKE(VARIABLE)
637 # --------------------------
638 # Public sister of _AM_SUBST_NOTMAKE.
639 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
641 # Check how to create a tarball. -*- Autoconf -*-
643 # Copyright (C) 2004-2018 Free Software Foundation, Inc.
645 # This file is free software; the Free Software Foundation
646 # gives unlimited permission to copy and/or distribute it,
647 # with or without modifications, as long as this notice is preserved.
649 # _AM_PROG_TAR(FORMAT)
650 # --------------------
651 # Check how to create a tarball in format FORMAT.
652 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
654 # Substitute a variable $(am__tar) that is a command
655 # writing to stdout a FORMAT-tarball containing the directory
657 # tardir=directory && $(am__tar) > result.tar
659 # Substitute a variable $(am__untar) that extract such
660 # a tarball read from stdin.
661 # $(am__untar) < result.tar
663 AC_DEFUN([_AM_PROG_TAR],
664 [# Always define AMTAR for backward compatibility. Yes, it's still used
665 # in the wild :-( We should find a proper way to deprecate it ...
666 AC_SUBST([AMTAR], ['$${TAR-tar}'])
668 # We'll loop over all known methods to create a tar archive until one works.
669 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
672 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
676 [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
677 # There is notably a 21 bits limit for the UID and the GID. In fact,
678 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
680 am_max_uid=2097151 # 2^21 - 1
681 am_max_gid=$am_max_uid
682 # The $UID and $GID variables are not portable, so we need to resort
683 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
684 # below are definitely unexpected, so allow the users to see them
685 # (that is, avoid stderr redirection).
686 am_uid=`id -u || echo unknown`
687 am_gid=`id -g || echo unknown`
688 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
689 if test $am_uid -le $am_max_uid; then
695 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
696 if test $am_gid -le $am_max_gid; then
706 [m4_fatal([Unknown tar format])])
708 AC_MSG_CHECKING([how to create a $1 tar archive])
710 # Go ahead even if we have the value already cached. We do so because we
711 # need to set the values for the 'am__tar' and 'am__untar' variables.
712 _am_tools=${am_cv_prog_tar_$1-$_am_tools}
714 for _am_tool in $_am_tools; do
717 for _am_tar in tar gnutar gtar; do
718 AM_RUN_LOG([$_am_tar --version]) && break
720 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
721 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
722 am__untar="$_am_tar -xf -"
725 # Must skip GNU tar: if it does not support --format= it doesn't create
726 # ustar tarball either.
727 (tar --version) >/dev/null 2>&1 && continue
728 am__tar='tar chf - "$$tardir"'
729 am__tar_='tar chf - "$tardir"'
733 am__tar='pax -L -x $1 -w "$$tardir"'
734 am__tar_='pax -L -x $1 -w "$tardir"'
738 am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
739 am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
740 am__untar='cpio -i -H $1 -d'
749 # If the value was cached, stop now. We just wanted to have am__tar
751 test -n "${am_cv_prog_tar_$1}" && break
753 # tar/untar a dummy directory, and stop if the command works.
756 echo GrepMe > conftest.dir/file
757 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
759 if test -s conftest.tar; then
760 AM_RUN_LOG([$am__untar <conftest.tar])
761 AM_RUN_LOG([cat conftest.dir/file])
762 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
767 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
768 AC_MSG_RESULT([$am_cv_prog_tar_$1])])
771 AC_SUBST([am__untar])