db-mysql/mysql-loader.lisp

   1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
   2 ;;;; *************************************************************************
   3 ;;;; FILE IDENTIFICATION
   4 ;;;;
   5 ;;;; Name:          mysql-loader.sql
   6 ;;;; Purpose:       MySQL library loader using UFFI
   7 ;;;; Programmers:   Kevin M. Rosenberg
   8 ;;;; Date Started:  Feb 2002
   9 ;;;;
  10 ;;;; $Id$
  11 ;;;;
  12 ;;;; This file, part of CLSQL, is Copyright (c) 2002 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 (declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
  20 (in-package :mysql)
  21
  22 ;;;; Modified by Kevin Rosenberg
  23 ;;;;  - probe potential directories to find library
  24 ;;;;  - Changed from CMUCL functions to UFFI to
  25 ;;;;      -- prevent library from being loaded multiple times
  26 ;;;;      -- support Allegro CL and Lispworks
  27
  28 (defparameter *clsql-mysql-library-path*
  29   (uffi:find-foreign-library
  30    "mysql"
  31    `(,(make-pathname :directory (pathname-directory *load-truename*))
  32      "/usr/lib/clsql/"
  33      "/sw/lib/clsql/"
  34      "/home/kevin/debian/src/clsql/db-mysql/")
  35    :drive-letters '("C")))
  36
  37 (defparameter *libz-library-path*
  38   (uffi:find-foreign-library
  39    '("libz" "zlib")
  40    `(,(make-pathname :directory (pathname-directory *load-truename*))
  41       "/usr/lib/"
  42       "/sw/lib/"
  43       "/usr/local/lib/"
  44       "/home/kevin/debian/src/clsql/db-mysql/"
  45       "/mysql/lib/opt/")
  46    :drive-letters '("C")))
  47
  48 (defvar *mysql-library-candidate-names*
  49     '("libmysqlclient" "libmysql"))
  50
  51 (defparameter *mysql-library-candidate-directories*
  52     `(,(pathname-directory *load-pathname*)
  53       "/opt/mysql/lib/mysql/" "/usr/local/lib/" "/usr/lib/" "/usr/local/lib/mysql/" "/usr/lib/mysql/" "/mysql/lib/opt/" "/sw/lib/mysql/"))
  54
  55 (defvar *mysql-library-candidate-drive-letters* '("C" "D" "E"))
  56
  57 (defvar *mysql-supporting-libraries* '("c")
  58   "Used only by CMU. List of library flags needed to be passed to ld to
  59 load the MySQL client library succesfully.  If this differs at your site,
  60 set to the right path before compiling or loading the system.")
  61
  62 (defvar *mysql-library-loaded* nil
  63   "T if foreign library was able to be loaded successfully")
  64
  65 (defmethod clsql-base-sys:database-type-library-loaded ((database-type (eql :mysql)))
  66   *mysql-library-loaded*)
  67
  68 (defmethod clsql-base-sys:database-type-load-foreign ((database-type (eql :mysql)))
  69   (let ((mysql-path
  70          (uffi:find-foreign-library *mysql-library-candidate-names*
  71                                     *mysql-library-candidate-directories*
  72                                     :drive-letters
  73                                     *mysql-library-candidate-drive-letters*)))
  74     (unless (probe-file mysql-path)
  75       (error "Can't find mysql client library to load"))
  76     (uffi:load-foreign-library *libz-library-path*)
  77     (uffi:load-foreign-library mysql-path
  78                                :module "mysql"
  79                                :supporting-libraries
  80                                *mysql-supporting-libraries*)
  81     (uffi:load-foreign-library *clsql-mysql-library-path*
  82                                :module "clsql-mysql"
  83                                :supporting-libraries
  84                                (append *mysql-supporting-libraries*)))
  85   (setq *mysql-library-loaded* t))
  86
  87
  88 (clsql-base-sys:database-type-load-foreign :mysql)
  89