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