u-boot/net
Sebastien Carlier 6d8962e814 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>
2010-11-17 21:02:18 +01:00
..
bootp.c net: Fix potential empty DHCP Parameter Request List 2010-11-14 23:29:29 +01:00
bootp.h net: express the first argument to NetSetTimeout() in milliseconds 2008-10-18 21:54:00 +02:00
dns.c Coding Style cleanup; update CHANGELOG. 2009-07-23 22:23:23 +02:00
dns.h Add DNS support 2009-07-22 22:53:44 -07:00
eth.c Net: clarify board/cpu_eth_init calls 2010-11-15 00:01:15 +01:00
Makefile Switch from archive libraries to partial linking 2010-11-17 21:02:18 +01:00
net.c rarp: Condtionally compile rarp support 2010-10-11 23:00:29 -07:00
nfs.c net: pull CONFIG checks out of source and into makefile 2009-12-13 21:31:26 -08:00
nfs.h nfs: accept CONFIG_NFS_READ_SIZE from config file 2009-08-25 13:35:54 -07:00
rarp.c net: pull CONFIG checks out of source and into makefile 2009-12-13 21:31:26 -08:00
rarp.h Initial revision 2002-07-20 20:14:13 +00:00
sntp.c minor debug cleanups in ./net 2009-08-07 17:32:16 -07:00
sntp.h * Patch by Masami Komiya, 30 Mar 2005: 2005-04-01 00:25:43 +00:00
tftp.c TFTP: allow for adjustable retransmission timout 2010-03-21 22:22:44 +01:00
tftp.h Initial revision 2000-12-28 11:02:30 +00:00