[PATCH] Add Blackfin arch to build system

[Alex Landau]

Hi All,

Blackfin (and other no-MMU's too, I guess) use the bFLT file format instead of (or in
addition to) ELF, and therefore requires special LDFLAGS and not stripping.
The attached patch does exactly that. It adds a blackfin/ directory under arch/ with a
Makefile handling these details.

Builds of busybox with "make" won't be affected, those with "make ARCH=blackfin
CROSS_COMPILE=bfin-uclinux-" will.

Alex

P.S. There is currently a call to elf2flt in the regular build system. It does not work
(again, at least for Blackfin) since elf2flt is not a converter that takes an ELF and
produces an FLT, but is instead invoked internally by a linker wrapper script on an
intermediate ELF with relocations.


       
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