ExternalVendorCode/openwrt
1
0
Fork 0
mirror of https://github.com/openwrt/openwrt.git synced 2024-12-19 21:58:04 +00:00
Code Issues Actions 6 Packages Projects Releases Wiki Activity

tools: Add gzip-libdeflate advanced compressor

Browse Source 
Several devices provide U-Boot versions with only gzip compressed kernel
support (e.g. Realtek switches). This compression method produces larger
images than lzma. To save space on flash and avoid going the hard way with
lzma-loader we can make use of enhanced gzip tool based on libdeflate
compression library from https://github.com/ebiggers/libdeflate. It
keeps 100% deflate/gzip compatibility while improving compression ratio.
The image can be unpacked by the default inflate routines inside U-Boot.

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
[Switched to v1.15 and made it work with cmake]
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Reviewed-by: Robert Marko <robimarko@gmail.com>
Reviewed-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Sander Vanheule <sander@svanheule.net>
This commit is contained in:
Markus Stockhausen 2022-07-26 13:44:48 +02:00 committed by Sander Vanheule
parent c9a7c00f80
commit a51ca085bf
3 changed files with 38 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/image-commands.mk
View File

@ -306,6 +306,11 @@ define Build/fit
@mv $@.new $@
endef
define Build/libdeflate-gzip
$(STAGING_DIR_HOST)/bin/libdeflate-gzip -f -12 -c $@ $(1) > $@.new
@mv $@.new $@
endef
define Build/gzip
$(STAGING_DIR_HOST)/bin/gzip -f -9n -c $@ $(1) > $@.new
@mv $@.new $@

2
tools/Makefile
View File

@ -36,6 +36,7 @@ tools-y += findutils
tools-y += firmware-utils
tools-y += flex
tools-y += gengetopt
tools-y += libdeflate
tools-y += libressl
tools-y += libtool
tools-y += lzma
@ -88,6 +89,7 @@ $(curdir)/genext2fs/compile := $(curdir)/libtool/compile
$(curdir)/gengetopt/compile := $(curdir)/libtool/compile
$(curdir)/gmp/compile := $(curdir)/libtool/compile
$(curdir)/isl/compile := $(curdir)/gmp/compile
$(curdir)/libdeflate/compile := $(curdir)/cmake/compile
$(curdir)/libressl/compile := $(curdir)/pkgconf/compile
$(curdir)/libtool/compile := $(curdir)/automake/compile $(curdir)/missing-macros/compile
$(curdir)/lzma-old/compile := $(curdir)/zlib/compile

31
tools/libdeflate/Makefile Normal file
View File

@ -0,0 +1,31 @@
#
# Copyright (C) 2022 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
include $(TOPDIR)/rules.mk
PKG_NAME:=libdeflate
PKG_VERSION:=1.15
PKG_RELEASE:=1
PKG_SOURCE_URL:=https://github.com/ebiggers/libdeflate.git
PKG_SOURCE_PROTO:=git
PKG_SOURCE_VERSION:=v$(PKG_VERSION)
PKG_MIRROR_HASH:=122feff4543541b547dc89e832adf262c81911ae1acbccdc591f0353a85b600a
include $(INCLUDE_DIR)/host-build.mk
include $(INCLUDE_DIR)/cmake.mk
define Host/Install
$(INSTALL_BIN) $(HOST_BUILD_DIR)/programs/libdeflate-gzip $(STAGING_DIR_HOST)/bin/
$(LN) libdeflate-gzip $(STAGING_DIR_HOST)/bin/libdeflate-gunzip
endef
define Host/Clean
rm -f $(STAGING_DIR_HOST)/bin/libdeflate-gzip
rm -f $(STAGING_DIR_HOST)/bin/libdeflate-gunzip
endef
$(eval $(call HostBuild))