1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10; Package: UFFI -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
5 ;;;; Name: libraries.lisp
6 ;;;; Purpose: UFFI source to load foreign libraries
7 ;;;; Programmer: Kevin M. Rosenberg
8 ;;;; Date Started: Feb 2002
12 ;;;; This file, part of UFFI, is Copyright (c) 2002-2005 by Kevin M. Rosenberg
14 ;;;; *************************************************************************
18 (defvar *loaded-libraries* nil
19 "List of foreign libraries loaded. Used to prevent reloading a library")
21 (defun default-foreign-library-type ()
22 "Returns string naming default library type for platform"
23 #+(or win32 mswindows) "dll"
24 #+(or macosx darwin ccl-5.0) "dylib"
25 #-(or win32 mswindows macosx darwin ccl-5.0) "so"
28 (defun foreign-library-types ()
29 "Returns list of string naming possible library types for platform, sorted by preference"
30 #+(or win32 mswindows) '("dll" "lib")
31 #+(or macosx darwin ccl-5.0) '("dylib" "bundle")
32 #-(or win32 mswindows macosx darwin ccl-5.0) '("so" "a" "o")
35 (defun find-foreign-library (names directories &key types drive-letters)
36 "Looks for a foreign library. directories can be a single
37 string or a list of strings of candidate directories. Use default
38 library type if type is not specified."
40 (setq types (foreign-library-types)))
42 (setq types (list types)))
44 (setq names (list names)))
45 (unless (listp directories)
46 (setq directories (list directories)))
47 #+(or win32 mswindows)
48 (unless (listp drive-letters)
49 (setq drive-letters (list drive-letters)))
50 #-(or win32 mswindows)
51 (setq drive-letters '(nil))
52 (dolist (drive-letter drive-letters)
54 (dolist (dir directories)
56 (let ((path (make-pathname
58 #+lispworks (when drive-letter drive-letter)
60 #-lispworks (when drive-letter drive-letter)
66 (pathname-directory dir))
71 (parse-namestring dir)))))))
72 (when (probe-file path)
73 (return-from find-foreign-library path)))))))
77 (defun load-foreign-library (filename &key module supporting-libraries
79 #+(or allegro openmcl digitool sbcl) (declare (ignore module supporting-libraries))
80 #+(or cmu scl) (declare (ignore module))
81 #+lispworks (declare (ignore supporting-libraries))
83 (when (and filename (or (null (pathname-directory filename))
84 (probe-file filename)))
85 (if (pathnamep filename) ;; ensure filename is a string to check if already loaded
86 (setq filename (namestring (if (null (pathname-directory filename))
88 ;; lispworks treats as UNC, so use truename
89 #+(and lispworks win32) (truename filename)
90 #-(and lispworks win32) filename))))
92 (if (and (not force-load)
93 (find filename *loaded-libraries* :test #'string-equal))
94 t ;; return T, but don't reload library
97 (let ((type (pathname-type (parse-namestring filename))))
98 (if (string-equal type "so")
99 (sys::load-object-file filename)
100 (alien:load-foreign filename
102 (convert-supporting-libraries-to-string
103 supporting-libraries))))
105 (let ((type (pathname-type (parse-namestring filename))))
106 (alien:load-foreign filename
108 (convert-supporting-libraries-to-string
109 supporting-libraries)))
111 (handler-case (sb-alien::load-1-foreign filename)
112 (sb-int:unsupported-operator (c)
113 (if (fboundp (intern "LOAD-SHARED-OBJECT" :sb-alien))
114 (funcall (intern "LOAD-SHARED-OBJECT" :sb-alien) filename)
117 #+lispworks (fli:register-module module :real-name filename
118 :connection-style :immediate)
119 #+allegro (load filename)
120 #+openmcl (ccl:open-shared-library filename)
121 #+digitool (ccl:add-to-shared-library-search-path filename t)
123 (push filename *loaded-libraries*)
126 (defun convert-supporting-libraries-to-string (libs)
129 (push (format nil "-l~A" lib) lib-load-list))
130 (nreverse lib-load-list)))