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| # Copyright (C) 1996-2018 Free Software Foundation, Inc. |
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| # This file is free software; the Free Software Foundation |
| # gives unlimited permission to copy and/or distribute it, |
| # with or without modifications, as long as this notice is preserved. |
| |
| # This program is distributed in the hope that it will be useful, |
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| # Copyright (C) 2009-2018 Free Software Foundation, Inc. |
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| # Check how to create a tarball. -*- Autoconf -*- |
| |
| # Copyright (C) 2004-2018 Free Software Foundation, Inc. |
| # |
| # This file is free software; the Free Software Foundation |
| # gives unlimited permission to copy and/or distribute it, |
| # with or without modifications, as long as this notice is preserved. |
| |
| # _AM_PROG_TAR(FORMAT) |
| # -------------------- |
| # Check how to create a tarball in format FORMAT. |
| # FORMAT should be one of 'v7', 'ustar', or 'pax'. |
| # |
| # Substitute a variable $(am__tar) that is a command |
| # writing to stdout a FORMAT-tarball containing the directory |
| # $tardir. |
| # tardir=directory && $(am__tar) > result.tar |
| # |
| # Substitute a variable $(am__untar) that extract such |
| # a tarball read from stdin. |
| # $(am__untar) < result.tar |
| # |
| AC_DEFUN([_AM_PROG_TAR], |
| [# Always define AMTAR for backward compatibility. Yes, it's still used |
| # in the wild :-( We should find a proper way to deprecate it ... |
| AC_SUBST([AMTAR], ['$${TAR-tar}']) |
| |
| # We'll loop over all known methods to create a tar archive until one works. |
| _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none' |
| |
| m4_if([$1], [v7], |
| [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'], |
| |
| [m4_case([$1], |
| [ustar], |
| [# The POSIX 1988 'ustar' format is defined with fixed-size fields. |
| # There is notably a 21 bits limit for the UID and the GID. In fact, |
| # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343 |
| # and bug#13588). |
| am_max_uid=2097151 # 2^21 - 1 |
| am_max_gid=$am_max_uid |
| # The $UID and $GID variables are not portable, so we need to resort |
| # to the POSIX-mandated id(1) utility. Errors in the 'id' calls |
| # below are definitely unexpected, so allow the users to see them |
| # (that is, avoid stderr redirection). |
| am_uid=`id -u || echo unknown` |
| am_gid=`id -g || echo unknown` |
| AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format]) |
| if test $am_uid -le $am_max_uid; then |
| AC_MSG_RESULT([yes]) |
| else |
| AC_MSG_RESULT([no]) |
| _am_tools=none |
| fi |
| AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format]) |
| if test $am_gid -le $am_max_gid; then |
| AC_MSG_RESULT([yes]) |
| else |
| AC_MSG_RESULT([no]) |
| _am_tools=none |
| fi], |
| |
| [pax], |
| [], |
| |
| [m4_fatal([Unknown tar format])]) |
| |
| AC_MSG_CHECKING([how to create a $1 tar archive]) |
| |
| # Go ahead even if we have the value already cached. We do so because we |
| # need to set the values for the 'am__tar' and 'am__untar' variables. |
| _am_tools=${am_cv_prog_tar_$1-$_am_tools} |
| |
| for _am_tool in $_am_tools; do |
| case $_am_tool in |
| gnutar) |
| for _am_tar in tar gnutar gtar; do |
| AM_RUN_LOG([$_am_tar --version]) && break |
| done |
| am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"' |
| am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"' |
| am__untar="$_am_tar -xf -" |
| ;; |
| plaintar) |
| # Must skip GNU tar: if it does not support --format= it doesn't create |
| # ustar tarball either. |
| (tar --version) >/dev/null 2>&1 && continue |
| am__tar='tar chf - "$$tardir"' |
| am__tar_='tar chf - "$tardir"' |
| am__untar='tar xf -' |
| ;; |
| pax) |
| am__tar='pax -L -x $1 -w "$$tardir"' |
| am__tar_='pax -L -x $1 -w "$tardir"' |
| am__untar='pax -r' |
| ;; |
| cpio) |
| am__tar='find "$$tardir" -print | cpio -o -H $1 -L' |
| am__tar_='find "$tardir" -print | cpio -o -H $1 -L' |
| am__untar='cpio -i -H $1 -d' |
| ;; |
| none) |
| am__tar=false |
| am__tar_=false |
| am__untar=false |
| ;; |
| esac |
| |
| # If the value was cached, stop now. We just wanted to have am__tar |
| # and am__untar set. |
| test -n "${am_cv_prog_tar_$1}" && break |
| |
| # tar/untar a dummy directory, and stop if the command works. |
| rm -rf conftest.dir |
| mkdir conftest.dir |
| echo GrepMe > conftest.dir/file |
| AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) |
| rm -rf conftest.dir |
| if test -s conftest.tar; then |
| AM_RUN_LOG([$am__untar <conftest.tar]) |
| AM_RUN_LOG([cat conftest.dir/file]) |
| grep GrepMe conftest.dir/file >/dev/null 2>&1 && break |
| fi |
| done |
| rm -rf conftest.dir |
| |
| AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) |
| AC_MSG_RESULT([$am_cv_prog_tar_$1])]) |
| |
| AC_SUBST([am__tar]) |
| AC_SUBST([am__untar]) |
| ]) # _AM_PROG_TAR |
| |
| m4_include([scripts/libtool.m4]) |
| m4_include([scripts/ltoptions.m4]) |
| m4_include([scripts/ltsugar.m4]) |
| m4_include([scripts/ltversion.m4]) |
| m4_include([scripts/lt~obsolete.m4]) |