u-boot/lib/lzo/Makefile

#
# (C) Copyright 2008
# Stefan Roese, DENX Software Engineering, sr@denx.de.
#
# SPDX-License-Identifier:	GPL-2.0+
#

include $(TOPDIR)/config.mk

LIB	= $(obj)liblzo.o

SOBJS	=

COBJS-$(CONFIG_LZO) += lzo1x_decompress.o

COBJS	= $(COBJS-y)
SRCS 	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))

$(LIB):	$(obj).depend $(OBJS)
	$(call cmd_link_o_target, $(OBJS))

#########################################################################

# defines $(obj).depend target
include $(SRCTREE)/rules.mk

sinclude $(obj).depend

#########################################################################
Add LZO decompressor support This patch adds LZO decompression support to U-Boot. It is needed for the upcoming UBIFS support, since UBIFS uses LZO as default compressor/ decompressor. Since we only support read-only in UBIFS, only the decompressor is needed. All this is copied with minor changes from the current Linux kernel version (2.6.28-rc8). This patch only implements this LZO decompressor support for PPC. Other platforms using UBIFS will have to add the required "include/asm/unaligned.h" as well. It should be fairly easy to copy this from the Linux source tree as I have done it for PPC in this patch. Signed-off-by: Stefan Roese <sr@denx.de> 2009-03-19 14:34:56 +00:00			`#`
			`# (C) Copyright 2008`
			`# Stefan Roese, DENX Software Engineering, sr@denx.de.`
			`#`
Add GPL-2.0+ SPDX-License-Identifier to source files Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com> 2013-07-08 07:37:19 +00:00			`# SPDX-License-Identifier: GPL-2.0+`
Add LZO decompressor support This patch adds LZO decompression support to U-Boot. It is needed for the upcoming UBIFS support, since UBIFS uses LZO as default compressor/ decompressor. Since we only support read-only in UBIFS, only the decompressor is needed. All this is copied with minor changes from the current Linux kernel version (2.6.28-rc8). This patch only implements this LZO decompressor support for PPC. Other platforms using UBIFS will have to add the required "include/asm/unaligned.h" as well. It should be fairly easy to copy this from the Linux source tree as I have done it for PPC in this patch. Signed-off-by: Stefan Roese <sr@denx.de> 2009-03-19 14:34:56 +00:00			`#`

			`include $(TOPDIR)/config.mk`

Switch from archive libraries to partial linking Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com> 2010-11-05 14:48:07 +00:00			`LIB = $(obj)liblzo.o`
Add LZO decompressor support This patch adds LZO decompression support to U-Boot. It is needed for the upcoming UBIFS support, since UBIFS uses LZO as default compressor/ decompressor. Since we only support read-only in UBIFS, only the decompressor is needed. All this is copied with minor changes from the current Linux kernel version (2.6.28-rc8). This patch only implements this LZO decompressor support for PPC. Other platforms using UBIFS will have to add the required "include/asm/unaligned.h" as well. It should be fairly easy to copy this from the Linux source tree as I have done it for PPC in this patch. Signed-off-by: Stefan Roese <sr@denx.de> 2009-03-19 14:34:56 +00:00
			`SOBJS =`

			`COBJS-$(CONFIG_LZO) += lzo1x_decompress.o`

			`COBJS = $(COBJS-y)`
			`SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)`
			`OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))`

			`$(LIB): $(obj).depend $(OBJS)`
Switch from archive libraries to partial linking Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com> 2010-11-05 14:48:07 +00:00			`$(call cmd_link_o_target, $(OBJS))`
Add LZO decompressor support This patch adds LZO decompression support to U-Boot. It is needed for the upcoming UBIFS support, since UBIFS uses LZO as default compressor/ decompressor. Since we only support read-only in UBIFS, only the decompressor is needed. All this is copied with minor changes from the current Linux kernel version (2.6.28-rc8). This patch only implements this LZO decompressor support for PPC. Other platforms using UBIFS will have to add the required "include/asm/unaligned.h" as well. It should be fairly easy to copy this from the Linux source tree as I have done it for PPC in this patch. Signed-off-by: Stefan Roese <sr@denx.de> 2009-03-19 14:34:56 +00:00
			`#########################################################################`

			`# defines $(obj).depend target`
			`include $(SRCTREE)/rules.mk`

			`sinclude $(obj).depend`

			`#########################################################################`