1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
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 1.10 2002/04/01 17:16:15 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) "so")
30 (defun find-foreign-library (names directories &key type drive-letters)
31 "Looks for a foreign library. directories can be a single
32 string or a list of strings of candidate directories. Use default
33 library type if type is not specified."
35 (setq type (default-foreign-library-type)))
37 (setq names (list names)))
38 (unless (listp directories)
39 (setq directories (list directories)))
40 #+(or win32 mswindows)
41 (unless (listp drive-letters)
42 (setq drive-letters (list drive-letters)))
43 #-(or win32 mswindows)
44 (setq drive-letters '(nil))
45 (dolist (drive-letter drive-letters)
47 (dolist (dir directories)
48 (let ((path (make-pathname
50 #+lispworks (when drive-letter drive-letter)
52 #-lispworks (when drive-letter drive-letter)
58 (pathname-directory dir))
63 (parse-namestring dir)))))))
64 (when (probe-file path)
65 (return-from find-foreign-library path))))))
69 (defun load-foreign-library (filename &key module supporting-libraries
71 #+allegro (declare (ignore module supporting-libraries))
72 #+lispworks (declare (ignore supporting-libraries))
73 #+cmu (declare (ignore module))
75 (when (and filename (probe-file filename))
76 (if (pathnamep filename) ;; ensure filename is a string to check if
77 (setq filename (namestring filename))) ; already loaded
79 (if (and (not force-load)
80 (find filename *loaded-libraries* :test #'string-equal))
81 t ;; return T, but don't reload library
83 #+cmu (alien:load-foreign filename
85 (convert-supporting-libraries-to-string
86 supporting-libraries))
87 #+lispworks (fli:register-module module
88 :connection-style :automatic
90 #+allegro (load filename)
92 (push filename *loaded-libraries*)
96 (defun convert-supporting-libraries-to-string (libs)
99 (push (format nil "-l~A" lib) lib-load-list))
100 (nreverse lib-load-list)))