From b28541e70ccacbd5cac039b1b88d8de7c8ab22e7 Mon Sep 17 00:00:00 2001
From: florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Fri, 11 Jan 2013 16:44:26 +0000
Subject: image.mk: use XZ bcj architecture filter if available

xz supports using an architecture specific BCJ filter, use that one to
save us a couple kB while producing squashfs filesystems (mimics the
Linux kernel).

Signed-off-by: Florian Fainelli <florian@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35097 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 include/image.mk | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/image.mk b/include/image.mk
index 503115ddb..7c45b3946 100644
--- a/include/image.mk
+++ b/include/image.mk
@@ -50,7 +50,10 @@ ifeq ($(CONFIG_SQUASHFS_LZMA),y)
   SQUASHFSCOMP := lzma $(LZMA_XZ_OPTIONS)
 endif
 ifeq ($(CONFIG_SQUASHFS_XZ),y)
-  SQUASHFSCOMP := xz $(LZMA_XZ_OPTIONS)
+  ifneq ($(filter arm x86 powerpc sparc,$(LINUX_KARCH)),)
+    BCJ_FILTER:=-Xbcj $(LINUX_KARCH)
+  endif
+  SQUASHFSCOMP := xz $(LZMA_XZ_OPTIONS) $(BCJ_FILTER)
 endif
 
 JFFS2_BLOCKSIZE ?= 64k 128k
-- 
cgit v1.2.3