From 6537cbdeac10816f03e115b27d7032a28be9eece Mon Sep 17 00:00:00 2001
From: "Yann E. MORIN\"" <yann.morin.1998@anciens.enib.fr>
Date: Wed, 10 Aug 2011 23:13:46 +0200
Subject: 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 --git a/configure b/configure
index bb8a069..1fe78bc 100755
--- a/configure
+++ b/configure
@@ -453,6 +453,9 @@ has_or_abort prog=patch
 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
-- 
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