I believe this port is affected by a bug similar to bug #222310 (it concerns sbcl, another lisp implementation).
As for sbcl, the installation fails for me with THREADS enabled and works with it disabled (see comment 5 of sbcl's bug).
In the ecl case, pkg-static fails during the registration of the installation: many files under the include/ecl/atomic-ops directory are missing, as well as include/ecl/atomic-ops.h
Is this still a problem, or could this closed (same cause as in bug #222310 ?).
(In reply to Walter Schwarzenfeld from comment #1)
I confirm that the issue is still there, but I guess it has the same cause than bug #222310 and then that it can be safely closed.