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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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Signed-off-by: Wolfgang Denk <wd@denx.de>
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Based on patch by Mike Frysinger, 20 Jun 2006
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Modifications are based on the linux kernel approach and
support two use cases:
1) Add O= to the make command line
'make O=/tmp/build all'
2) Set environement variable BUILD_DIR to point to the desired location
'export BUILD_DIR=/tmp/build'
'make'
The second approach can also be used with a MAKEALL script
'export BUILD_DIR=/tmp/build'
'./MAKEALL'
Command line 'O=' setting overrides BUILD_DIR environent variable.
When none of the above methods is used the local build is performed and
the object files are placed in the source directory.
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- rename CONFIG_BOOTBINFUNC into CONFIG_INIT_CRITICAL
- rename memsetup into lowlevel_init (function name and source files)
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- Fix Gigabit Ethernet support for 440GX
- Add Gigabit Ethernet Support to MII PHY utilities
* Patch by Brad Kemp, 12 Mar 2004:
Fixes for drivers/cfi_flash.c:
- Better support for x8/x16 implementations
- Added failure for AMD chips attempting to use CFG_FLASH_USE_BUFFER_WRITE
- Added defines for AMD command and address constants
* Patch by Leon Kukovec, 12 Mar 2004:
Fix get_dentfromdir() to correctly handle deleted dentries
* Patch by George G. Davis, 11 Mar 2004:
Remove hard coded network settings in TI OMAP1610 H2
default board config
* Patch by George G. Davis, 11 Mar 2004:
add support for ADS GraphicsClient+ board.
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