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https://github.com/brain-hackers/u-boot-brain
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6d8962e814
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>
56 lines
1.5 KiB
Makefile
56 lines
1.5 KiB
Makefile
# Makefile for YAFFS direct test
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#
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#
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# YAFFS: Yet another Flash File System. A NAND-flash specific file system.
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#
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# Copyright (C) 2003 Aleph One Ltd.
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#
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#
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# Created by Charles Manning <charles@aleph1.co.uk>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# NB Warning this Makefile does not include header dependencies.
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#
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# $Id: Makefile,v 1.15 2007/07/18 19:40:38 charles Exp $
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#EXTRA_COMPILE_FLAGS = -DYAFFS_IGNORE_TAGS_ECC
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include $(TOPDIR)/config.mk
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LIB = $(obj)libyaffs2.o
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COBJS-$(CONFIG_YAFFS2) := \
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yaffscfg.o yaffs_ecc.o yaffsfs.o yaffs_guts.o yaffs_packedtags1.o \
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yaffs_tagscompat.o yaffs_packedtags2.o yaffs_tagsvalidity.o \
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yaffs_nand.o yaffs_checkptrw.o yaffs_qsort.o yaffs_mtdif.o \
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yaffs_mtdif2.o
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SRCS := $(COBJS-y:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS-y))
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# -DCONFIG_YAFFS_NO_YAFFS1
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CFLAGS += -DCONFIG_YAFFS_DIRECT -DCONFIG_YAFFS_SHORT_NAMES_IN_RAM -DCONFIG_YAFFS_YAFFS2 -DNO_Y_INLINE -DLINUX_VERSION_CODE=0x20622
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all: $(LIB)
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$(LIB): $(obj).depend $(OBJS)
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$(call cmd_link_o_target, $(OBJS))
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.PHONY: clean distclean
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clean:
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rm -f $(OBJS)
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distclean: clean
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rm -f $(LIB) core *.bak .depend
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#########################################################################
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# defines $(obj).depend target
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include $(SRCTREE)/rules.mk
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sinclude $(obj).depend
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#########################################################################
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