Hi! I just noticed that there's a missing dependency in cl-pdf.asd. Line 45 which looks like (:file "zlib" :depends-on (#+use-uffi-zlib "init")) should be (:file "zlib" :depends-on ("defpackage" #+use-uffi-zlib "init")) instead because the code requires the package PDF to be defined. Cheers, Edi.