The ARM-HardFloat libraries and sample applications where generated by Buildroot.
The ability to specify non-standard library locations was added to BR at my request.
Also the ability to build a host version of patchelf.
Another little project of mine that I probably will never have time to complete.
BUT - it does demonstrate how to run two different sets of system libraries concurrently (and one of them from /mnt/us/{bin,lib} ).
(or /mnt/us/system/{bin, lib} - wherever it was that I built them for.
)