diff -ru cd.orig\src\pdflib\pdflib\p_document.c cd\src\pdflib\pdflib\p_document.c
--- cd.orig\src\pdflib\pdflib\p_document.c	Wed Aug 01 15:42:51 2012
+++ cd\src\pdflib\pdflib\p_document.c	Wed Aug 01 16:03:28 2012
@@ -1411,7 +1411,12 @@
 #endif
 
         doc->fp = fp;
+#ifdef __DragonFly__
+/* ugly hack by kmx, however otherwise it does not compile on DragonFly BSD */
+        doc->len = 1;
+#else
         doc->len = sizeof(FILE);
+#endif
     }
     else if (filename && (*filename || len > 0))
     {