Not sure where this question belongs. It certainly does not belong in the thread I where asked it first, it just naturally followed from the discussion therein.

Basically, how can I tell if any given binary has been compiled as Thumb?

The reason for asking: All makefiles auto-generated by qmake on my N900 have -mthumb in CFLAGS. Does that mean that Qt binaries built on the N900 are built as Thumb by default? How can I tell?