Use xz for image compression

README.md

 
 Then install packages needed for building images:
 
-    sudo apt-get -y install python-docutils mktorrent vmdebootstrap
+    sudo apt-get -y install python-docutils mktorrent vmdebootstrap xz-utils
     sudo apt-get -y install dosfstools btrfs-tools extlinux python-distro-info mbr
     sudo apt-get -y install qemu-user-static binfmt-support u-boot-tools qemu
 
 
 If the image is compressed then decompress it with:
 
-    tar -xjvf filename.tar.bz2
+    unxz filename.img.xz
 
 Then copy it to a microSD card. Depending on your system you may need an adaptor to be able to do that.
 

doc/EN/installation.org

 Then install packages needed for building images:
 
 #+BEGIN_SRC bash
-sudo apt-get -y install python-docutils mktorrent vmdebootstrap
+sudo apt-get -y install python-docutils mktorrent vmdebootstrap xz-utils
 sudo apt-get -y install dosfstools btrfs-tools extlinux python-distro-info mbr
 sudo apt-get -y install qemu-user-static binfmt-support u-boot-tools qemu
 #+END_SRC
 If the image is compressed then decompress it with:
 
 #+BEGIN_SRC bash
-tar -xjvf filename.tar.bz2
+unxz filename.img.xz
 #+END_SRC
 
 Then copy it to a microSD card. Depending on your system you may need an adaptor to be able to do that.

src/freedombone-image

     PASSWORD="$(openssl rand -base64 10 | cut -c1-8)"
 fi
 
-image_types=( bz2 img sig vdi qcow2 )
+image_types=( xz img sig vdi qcow2 )
 for im in "${image_types[@]}"
 do
     no_of_files=$(ls -afq ${CURR_DIR}/${PROJECT_NAME}*.${im} | wc -l)
 "
     fi
 fi
-ls -lh ${PROJECT_NAME}*.img ${PROJECT_NAME}*.sig ${PROJECT_NAME}*.bz2 ${PROJECT_NAME}*.vdi ${PROJECT_NAME}*.qcow2
+ls -lh ${PROJECT_NAME}*.img ${PROJECT_NAME}*.sig ${PROJECT_NAME}*.xz ${PROJECT_NAME}*.vdi ${PROJECT_NAME}*.qcow2
 
 # Remove the mesh script after use
 if [[ $VARIANT == "mesh"* ]]; then

src/freedombone-image-makefile

 TODAY := $(shell date +%Y-%m-%d)
 NAME = build/$(PROJECT_NAME)-$(IMAGE_NAME)-$(TODAY)_$(BUILD)
 IMAGE = $(NAME).img
-ARCHIVE = $(NAME).tar.bz2
+ARCHIVE = $(IMAGE).xz
 SIGNATURE = $(ARCHIVE).sig
 OWNER = 1000
-TAR = tar --checkpoint=1000 --checkpoint-action=dot -cjvf
+XZ = xz --no-warn --best --verbose
 SIGN = -gpg --output $(SIGNATURE) --detach-sig $(ARCHIVE)
 
 # settings for `make test`
 	$(eval ARCHITECTURE = armhf)
 	$(eval MACHINE = beaglebone)
 	$(MAKE_IMAGE)
-	$(TAR) $(ARCHIVE) $(IMAGE)
+	@rm -f $(ARCHIVE)
+	$(XZ) $(IMAGE)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval ARCHITECTURE = armhf)
 	$(eval MACHINE = cubieboard2)
 	$(MAKE_IMAGE)
-	$(TAR) $(ARCHIVE) $(IMAGE)
+	@rm -f $(ARCHIVE)
+	$(XZ) $(IMAGE)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval ARCHITECTURE = armhf)
 	$(eval MACHINE = cubietruck)
 	$(MAKE_IMAGE)
-	$(TAR) $(ARCHIVE) $(IMAGE)
+	@rm -f $(ARCHIVE)
+	$(XZ) $(IMAGE)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval ARCHITECTURE = armhf)
 	$(eval MACHINE = a20-olinuxino-lime2)
 	$(MAKE_IMAGE)
-	$(TAR) $(ARCHIVE) $(IMAGE)
+	@rm -f $(ARCHIVE)
+	$(XZ) $(IMAGE)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval ARCHITECTURE = armhf)
 	$(eval MACHINE = a20-olinuxino-micro)
 	$(MAKE_IMAGE)
-	$(TAR) $(ARCHIVE) $(IMAGE)
+	@rm -f $(ARCHIVE)
+	$(XZ) $(IMAGE)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval ARCHITECTURE = i386)
 	$(eval MACHINE = all)
 	$(MAKE_IMAGE)
-	$(TAR) $(ARCHIVE) $(IMAGE)
+	@rm -f $(ARCHIVE)
+	$(XZ) $(IMAGE)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval ARCHITECTURE = amd64)
 	$(eval MACHINE = all)
 	$(MAKE_IMAGE)
-	$(TAR) $(ARCHIVE) $(IMAGE)
+	@rm -f $(ARCHIVE)
+	$(XZ) $(IMAGE)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(MAKE_IMAGE)
 	# Convert image to vdi hard drive
 	VBoxManage convertdd $(NAME).img $(NAME).vdi
-	$(TAR) $(ARCHIVE) $(NAME).vdi
+	@rm -f $(ARCHIVE)
+	$(XZ) $(IMAGE)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(MAKE_IMAGE)
 	# Convert image to vdi hard drive
 	VBoxManage convertdd $(NAME).img $(NAME).vdi
-	$(TAR) $(ARCHIVE) $(NAME).vdi
+	@rm -f $(ARCHIVE)
+	$(XZ) $(IMAGE)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(MAKE_IMAGE)
 	# Convert image to qemu format
 	qemu-img convert -O qcow2 $(NAME).img $(NAME).qcow2
-	$(TAR) $(ARCHIVE) $(NAME).qcow2
+	@rm -f $(ARCHIVE)
+	$(XZ) $(IMAGE)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(MAKE_IMAGE)
 	# Convert image to qemu format
 	qemu-img convert -O qcow2 $(NAME).img $(NAME).qcow2
-	$(TAR) $(ARCHIVE) $(NAME).qcow2
+	@rm -f $(ARCHIVE)
+	$(XZ) $(IMAGE)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."

website/EN/installation.html

 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
 <head>
-<!-- 2016-01-08 Fri 14:41 -->
+<!-- 2016-01-14 Thu 11:07 -->
 <meta  http-equiv="Content-Type" content="text/html;charset=utf-8" />
 <meta  name="viewport" content="width=device-width, initial-scale=1" />
 <title></title>
 
 <div class="org-src-container">
 
-<pre class="src src-bash">sudo apt-get -y install python-docutils mktorrent vmdebootstrap
+<pre class="src src-bash">sudo apt-get -y install python-docutils mktorrent vmdebootstrap xz-utils
 sudo apt-get -y install dosfstools btrfs-tools extlinux python-distro-info mbr
 sudo apt-get -y install qemu-user-static binfmt-support u-boot-tools qemu
 </pre>
 
 <div class="org-src-container">
 
-<pre class="src src-bash">tar -xjvf filename.tar.bz2
+<pre class="src src-bash">unxz filename.img.xz
 </pre>
 </div>