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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>
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The change is currently needed to be able to remove the board
configuration scripting from the top level Makefile and replace it by
a simple, table driven script.
Moving this configuration setting into the "CONFIG_*" name space is
also desirable because it is needed if we ever should move forward to
a Kconfig driven configuration system.
Signed-off-by: Wolfgang Denk <wd@denx.de>
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The board includes:
* ADSP-BF561 rev. 0.5
* 32-bit SDRAM (2 * MT48LC16M16A2TG or MT48LC32M16A2TG)
* Gigabit Ether AX88180 (ASIX) + 88E1111 rev. B2 (Marvell)
* SPI boot flash on PF2 (M25P64 8MB, or M25P128 16 MB)
* FPGA boot flash on PF3 (M25P64 8MB, or M25P128 16 MB)
* Spartan6-LX150 (memory-mapped; both PPIs also connected)
* See http://www.skutek.com/
Signed-off-by: Wojtek Skulski <skulski@pas.rochester.edu>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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