uffi/clsql-uffi-loader.lisp

   1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
   2 ;;;; *************************************************************************
   3 ;;;; FILE IDENTIFICATION
   4 ;;;;
   5 ;;;; Name:     clsql-uffi-loader.sql
   6 ;;;; Purpose:  Library loader using CLSQL UFFI helper library
   7 ;;;; Author:   Kevin M. Rosenberg
   8 ;;;; Created:  Mar 2002
   9 ;;;;
  10 ;;;; $Id$
  11 ;;;;
  12 ;;;; This file, part of CLSQL, is Copyright (c) 2002-2004 by Kevin M. Rosenberg
  13 ;;;;
  14 ;;;; CLSQL 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 ;;;; *************************************************************************
  18
  19 (in-package #:clsql-uffi)
  20
  21 (defun find-and-load-foreign-library (filenames &key module supporting-libraries (errorp t))
  22   (setq filenames (if (listp filenames) filenames (list filenames))
  23         filenames
  24           (append
  25            (loop for search-path in clsql:*foreign-library-search-paths*
  26                  nconc (loop for filename in filenames
  27                              collect (merge-pathnames filename search-path)))
  28            filenames))
  29   (or (loop for type in (uffi:foreign-library-types)
  30             for suffix = (make-pathname :type type)
  31             thereis (loop for filename in filenames
  32                           thereis (handler-case
  33                                     (uffi:load-foreign-library (merge-pathnames filename suffix)
  34                                                                :module module
  35                                                                :supporting-libraries supporting-libraries)
  36                                     (error (c)
  37                                       (warn "~A" c)
  38                                       nil))))
  39       (when errorp
  40         (error "Couldn't load foreign librar~@P ~{~S~^, ~}."
  41                (length filenames) filenames))))
  42
  43 (defvar *clsql-uffi-library-filenames*
  44     (list #+(or 64bit x86-64) "clsql_uffi64"
  45           #+(or 64bit x86-64) (make-pathname :name "clsql_uffi64"
  46                                              :directory clsql-uffi-system::*library-file-dir*)
  47           "clsql_uffi"
  48           (make-pathname :name "clsql_uffi"
  49                          :directory clsql-uffi-system::*library-file-dir*)))
  50
  51 (defvar *clsql-uffi-supporting-libraries* '("c")
  52   "Used only by CMU. List of library flags needed to be passed to ld to
  53 load the MySQL client library succesfully.  If this differs at your site,
  54 set to the right path before compiling or loading the system.")
  55
  56 (defvar *uffi-library-loaded* nil
  57   "T if foreign library was able to be loaded successfully")
  58
  59 (defun load-uffi-foreign-library ()
  60   (find-and-load-foreign-library *clsql-uffi-library-filenames*
  61                                  :module "clsql-uffi"
  62                                  :supporting-libraries
  63                                  *clsql-uffi-supporting-libraries*)
  64   (setq *uffi-library-loaded* t))
  65
  66 (load-uffi-foreign-library)
  67