[Buildroot] [PATCH v4 3/3] toolchain: disable internal for blackfin

[Waldemar Brodkorb]

Hi Guido,
Guido Martínez wrote,

> The internal toolchain won't work with Cortex-M3, mostly because of the
> fact that some packages (notably: uclibc and glibc) fall back to regular
> ARM instructions in some situations, and Cortex-M3 has no support for
> those kind of instructions.
> 
> So, just disable it for now and rely on the external toolchain.

uClibc-ng compiles fine for Cortex-M3 when you use thumb, flat
binaries and disable ld.so. 
I am still in the progress of running the code on Freescale Kinetis
K70 from Emcraft. But I am optimistic.
(context functions must be disabled)

best regards
 Waldemar