RFC: Extending --with-advance-toolchain to aarch64

[Alan Modra]

On Wed, Oct 09, 2019 at 10:29:48PM +0000, Steve Ellcey wrote:
> I have a question about building a toolchain that uses (at run time) a
> dynamic linker and system libraries and headers that are in a non-standard
> place.

I had scripts a long time ago to build a complete toolchain including
glibc that could be installed in a non-standard location and co-exist
with other system libraries.  I worked around..

> Inconsistency detected by ld.so: get-dynamic-info.h: 147: elf_get_dynamic_info: 
> Assertion `info[DT_RPATH] == NULL' failed!

..this by patching glibc.

-- 
Alan Modra
Australia Development Lab, IBM