OK, I've just added thumbv7*, Thanks.
although I still have some doubts because "thumb" is translated to "arm" since 2011-03-23 (commit 45a6a4d02d7ee81332328b412441ac982e2c8a81). I didn't know. Maybe $cpu is not actually "thumb" (instead "thumbv7"?) on this system. I have no personal knowledge (or need) for any of this, just passing on what kolan_n sent me. I hope he will reply with the answer to your request for the CPU-MFR-OPSYS triplet on his system ... Thanks again, Karl