$ clall -r '(defpackage "BAR" (:use))' ' (let ((*package* (find-package "BAR"))) (load (compile-file "foo.lisp")))'
Armed Bear Common Lisp --> #<PACKAGE BAR>
Armed Bear Common Lisp The function BAR::SETQ is undefined.
Clozure Common Lisp --> #<Package "BAR">
Clozure Common Lisp --> #P"/private/tmp/foo.dx64fsl"
CLISP --> #<PACKAGE BAR>
CLISP --> #P"/private/tmp/foo.fas"
ECL --> #<"BAR" package>
ECL Note: Invoking external command: gcc -x c-header /usr/local/include/ecl/ecl-cmp.h -I/usr/local/include/ -g -O2 -fPIC -fno-common -D_THREAD_SAFE -Ddarwin -O2 -o /var/folders/pq/82920zm125n09frk81rrtp200000gn/T/ecl-include092A/ecl-cmp.h.gch
SBCL --> #<PACKAGE "BAR">
SBCL --> T