Call the tower...and hope they reply.
Oh yes, and wake the First Officer up....
One particular airline that I recall, used to
insist that at BOM, the OM was crossed at the charted altitude, irrespective of anything else....temp, for example.
Sooo, the guys did this unfailingly,
until one poor chap landed long (poor speed technique, steep glidepath) and ran off the end.
Henceforth, this policy was abandoned.
Good common sense should prevail, many times it does
not, especially with some instructions from the head shed.