kumquat-buildroot/support/dependencies/check-host-tar.sh
Heiko Abraham fc90fa9417 Improve tar check if bsdtar is installed
If bsdtar is installed, fix script error for tar version detection.

bsdtar does not provide all expected command line (long) options
like "--hard-dereference". To ensure compatibility, mark version
of tar as 'invalid' and trigger build of 'host-tar'.

[Peter; slightly reworded commit text]
Signed-off-by: Heiko Abraham <abrahamh@web.de>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-05-31 09:39:40 +02:00

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#!/bin/sh
candidate="$1"
tar=`which $candidate`
if [ ! -x "$tar" ]; then
tar=`which tar`
if [ ! -x "$tar" ]; then
# echo nothing: no suitable tar found
exit 1
fi
fi
# Output of 'tar --version' examples:
# tar (GNU tar) 1.15.1
# tar (GNU tar) 1.25
# bsdtar 2.8.3 - libarchive 2.8.3
version=`$tar --version | head -n 1 | sed 's/^.*\s\([0-9]\+\.\S\+\).*$/\1/'`
major=`echo "$version" | cut -d. -f1`
minor=`echo "$version" | cut -d. -f2`
bugfix=`echo "$version" | cut -d. -f3`
version_bsd=`$tar --version | grep 'bsdtar'`
if [ ! -z "${version_bsd}" ] ; then
# mark as invalid version - not all command line options are available
major=0
minor=0
fi
# Minimal version = 1.17 (previous versions do not correctly unpack archives
# containing hard-links if the --strip-components option is used).
major_min=1
minor_min=17
if [ $major -gt $major_min ]; then
echo $tar
else
if [ $major -eq $major_min -a $minor -ge $minor_min ]; then
echo $tar
else
# echo nothing: no suitable tar found
exit 1
fi
fi