# HG changeset patch
# User "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
# Date 1313010826 -7200
# Node ID dda4742972e2930e3e4988b4cfb64265fb5d826d
# Parent  b6bf20def07f404a1d74ebbf8c388cdca3235fed
configure: add test for xz-utils

Some upstream now release tarballs compressed with xz, along with the
more traditional bzip2 and/or gzip tarballs.  xz (and its predecessor
lzma) achieves better compression, so is a good candidate to shorten
the time it takes to download the source tarballs.

Enable downloading xz-cmopressed tarballs if the user has xz-utils.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

diff -r b6bf20def07f -r dda4742972e2 configure
--- a/configure	Sun Aug 14 16:06:20 2011 +0200
+++ b/configure	Wed Aug 10 23:13:46 2011 +0200
@@ -453,6 +453,9 @@
 has_or_abort prog=tar
 has_or_abort prog=gzip
 has_or_abort prog=bzip2
+has_or_warn  prog=xz                                        \
+             kconfig=has_xzutils                            \
+             err="xz-comoressed tarballs will not be used"
 has_or_abort prog=readlink
 has_or_abort prog=objcopy var=objcopy
 has_or_abort prog=objdump var=objdump