1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10; Package: UFFI -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
5 ;;;; Name: libraries.cl
6 ;;;; Purpose: UFFI source to load foreign libraries
7 ;;;; Programmer: Kevin M. Rosenberg
8 ;;;; Date Started: Feb 2002
10 ;;;; $Id: libraries.cl,v 1.2 2002/09/20 04:51:14 kevin Exp $
12 ;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
14 ;;;; UFFI users are granted the rights to distribute and use this software
15 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
16 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
17 ;;;; *************************************************************************
19 (declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
22 (defvar *loaded-libraries* nil
23 "List of foreign libraries loaded. Used to prevent reloading a library")
25 (defun default-foreign-library-type ()
26 "Returns string naming default library type for platform"
27 #+(or win32 mswindows) "dll"
28 #-(or win32 mswindows macosx) "so"
31 (defun find-foreign-library (names directories &key types drive-letters)
32 "Looks for a foreign library. directories can be a single
33 string or a list of strings of candidate directories. Use default
34 library type if type is not specified."
36 (setq types (default-foreign-library-type)))
38 (setq types (list types)))
40 (setq names (list names)))
41 (unless (listp directories)
42 (setq directories (list directories)))
43 #+(or win32 mswindows)
44 (unless (listp drive-letters)
45 (setq drive-letters (list drive-letters)))
46 #-(or win32 mswindows)
47 (setq drive-letters '(nil))
48 (dolist (drive-letter drive-letters)
50 (dolist (dir directories)
52 (let ((path (make-pathname
54 #+lispworks (when drive-letter drive-letter)
56 #-lispworks (when drive-letter drive-letter)
62 (pathname-directory dir))
67 (parse-namestring dir)))))))
68 (when (probe-file path)
69 (return-from find-foreign-library path)))))))
73 (defun load-foreign-library (filename &key module supporting-libraries
75 #+allegro (declare (ignore module supporting-libraries))
76 #+lispworks (declare (ignore supporting-libraries))
77 #+cmu (declare (ignore module))
79 (when (and filename (probe-file filename))
80 (if (pathnamep filename) ;; ensure filename is a string to check if
81 (setq filename (namestring filename))) ; already loaded
83 (if (and (not force-load)
84 (find filename *loaded-libraries* :test #'string-equal))
85 t ;; return T, but don't reload library
88 (let ((type (pathname-type (parse-namestring filename))))
90 (sys::load-object-file filename)
91 (alien:load-foreign filename
93 (convert-supporting-libraries-to-string
94 supporting-libraries))))
96 #+lispworks (fli:register-module module
98 #+allegro (load filename)
100 (push filename *loaded-libraries*)
104 (defun convert-supporting-libraries-to-string (libs)
107 (push (format nil "-l~A" lib) lib-load-list))
108 (nreverse lib-load-list)))