r2262: *** empty log message ***

[clsql.git] / clsql-mysql / mysql-loader.cl

diff --git a/clsql-mysql/mysql-loader.cl b/clsql-mysql/mysql-loader.cl
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+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name:          mysql-loader.sql
+;;;; Purpose:       MySQL library loader using UFFI
+;;;; Programmers:   Kevin M. Rosenberg
+;;;; Date Started:  Feb 2002
+;;;;
+;;;; $Id: mysql-loader.cl,v 1.1 2002/08/01 03:06:26 kevin Exp $
+;;;;
+;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
+;;;;
+;;;; CLSQL users are granted the rights to distribute and use this software
+;;;; as governed by the terms of the Lisp Lesser GNU Public License
+;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
+;;;; *************************************************************************
+
+(declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
+(in-package :mysql)
+
+;;;; Modified by Kevin Rosenberg 
+;;;;  - probe potential directories to find library
+;;;;  - Changed from CMUCL functions to UFFI to
+;;;;      -- prevent library from being loaded multiple times
+;;;;      -- support Allegro CL and Lispworks
+
+(defvar *clsql-mysql-library-filename* 
+  (uffi:find-foreign-library
+   "clsql-mysql"
+   `(,(directory-namestring
+       (translate-logical-pathname 
+       "cl-library:clsql;interfaces;mysql;"))
+     "/usr/lib/clsql/")
+   :drive-letters '("C" "D" "E" "F" "G")))
+  
+(defvar *mysql-library-filename*
+    (cond
+     ((probe-file "/opt/mysql/lib/mysql/libmysqlclient.so")
+      "/opt/mysql/lib/mysql/libmysqlclient.so")
+     ((probe-file "/usr/local/lib/libmysqlclient.so")
+      "/usr/local/lib/libmysqlclient.so")
+     ((probe-file "/usr/lib/libmysqlclient.so")
+      "/usr/lib/libmysqlclient.so")
+     #+(or win32 mswindows) 
+     ((probe-file "c:/mysql/lib/opt/libmysql.dll")
+      "c:/mysql/lib/opt/libmysql.dll")
+     (t
+      (warn "Can't find MySQL client library to load.")))
+  "Location where the MySQL client library is to be found.")
+
+(defvar *mysql-library-candidate-names*
+    '("libmysqlclient" "libmysql"))
+
+(defvar *mysql-library-candidate-directories*
+    '("/opt/mysql/lib/mysql/" "/usr/local/lib/" "/usr/lib/" "/mysql/lib/opt/"))
+
+(defvar *mysql-library-candidate-drive-letters* '("C" "D" "E"))
+
+(defvar *mysql-supporting-libraries* '("c")
+  "Used only by CMU. List of library flags needed to be passed to ld to
+load the MySQL client library succesfully.  If this differs at your site,
+set to the right path before compiling or loading the system.")
+
+(defvar *mysql-library-loaded* nil
+  "T if foreign library was able to be loaded successfully")
+
+(defmethod clsql-base-sys:database-type-library-loaded ((database-type (eql :mysql)))
+  *mysql-library-loaded*)
+                                     
+(defmethod clsql-base-sys:database-type-load-foreign ((database-type (eql :mysql)))
+  (let ((mysql-path
+        (uffi:find-foreign-library *mysql-library-candidate-names*
+                                   *mysql-library-candidate-directories*
+                                   :drive-letters
+                                   *mysql-library-candidate-drive-letters*)))
+    ;; zlib required to load mysql on CMUCL Solaris
+    (uffi:load-foreign-library 
+     (uffi:find-foreign-library '("libz" "zlib")
+                               '("/usr/lib/" "/usr/local/" "/lib/")))
+    (if        (and
+        (uffi:load-foreign-library mysql-path
+                                   :module "mysql" 
+                                   :supporting-libraries 
+                                   *mysql-supporting-libraries*)
+        (uffi:load-foreign-library *clsql-mysql-library-filename* 
+                                   :module "clsql-mysql" 
+                                   :supporting-libraries 
+                                   (append *mysql-supporting-libraries*)))
+       (setq *mysql-library-loaded* t)
+      (warn "Unable to load MySQL client library ~A or CLSQL-MySQL library ~A"
+           mysql-path *clsql-mysql-library-filename*))))
+
+
+(clsql-base-sys:database-type-load-foreign :mysql)
+