create squashfs4 images if kernel version >=2.6.29

SVN-Revision: 15866

include/image.mk

@@ -23,6 +23,17 @@ JFFS2OPTS     :=  --pad --big-endian --squash
 SQUASHFS_OPTS :=  -be
 endif
 
+ifneq ($(CONFIG_LINUX_2_6_29)$(CONFIG_LINUX_2_6_30),)
+USE_SQUASHFS4 := y
+endif
+
+ifneq ($(USE_SQUASHFS4),)
+MKSQUASHFS_CMD := $(STAGING_DIR_HOST)/bin/mksquashfs4
+SQUASHFS_OPTS  :=
+else
+MKSQUASHFS_CMD := $(STAGING_DIR_HOST)/bin/mksquashfs-lzma
+endif
+
 JFFS2_BLOCKSIZE ?= 64k 128k
 
 define add_jffs2_mark
@@ -55,7 +66,7 @@ ifneq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
   ifeq ($(CONFIG_TARGET_ROOTFS_SQUASHFS),y)
     define Image/mkfs/squashfs
 		@mkdir -p $(TARGET_DIR)/jffs
-		$(STAGING_DIR_HOST)/bin/mksquashfs-lzma $(TARGET_DIR) $(KDIR)/root.squashfs -nopad -noappend -root-owned $(SQUASHFS_OPTS)
+		$(MKSQUASHFS_CMD) $(TARGET_DIR) $(KDIR)/root.squashfs -nopad -noappend -root-owned $(SQUASHFS_OPTS)
 		$(call Image/Build,squashfs)
     endef
   endif