1 /* Configuration.java -- 2 Copyright (C) 1998, 2001, 2003, 2005, 2006, 2007, 2008 3 Free Software Foundation, Inc. 4 5 This file is part of GNU Classpath. 6 7 GNU Classpath is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2, or (at your option) 10 any later version. 11 12 GNU Classpath is distributed in the hope that it will be useful, but 13 WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GNU Classpath; see the file COPYING. If not, write to the 19 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 20 02110-1301 USA. 21 22 Linking this library statically or dynamically with other modules is 23 making a combined work based on this library. Thus, the terms and 24 conditions of the GNU General Public License cover the whole 25 combination. 26 27 As a special exception, the copyright holders of this library give you 28 permission to link this library with independent modules to produce an 29 executable, regardless of the license terms of these independent 30 modules, and to copy and distribute the resulting executable under 31 terms of your choice, provided that you also meet, for each linked 32 independent module, the terms and conditions of the license of that 33 module. An independent module is a module which is not derived from 34 or based on this library. If you modify this library, you may extend 35 this exception to your version of the library, but you are not 36 obligated to do so. If you do not wish to do so, delete this 37 exception statement from your version. */ 38 39 package gnu.classpath; 40 41 /** 42 * This file defines compile-time constants that can be accessed by 43 * java code. It is pre-processed by configure. 44 */ 45 public final class Configuration 46 { Configuration()47 private Configuration() 48 { 49 } 50 classpath_home()51 private static native String classpath_home(); debug()52 private static native boolean debug(); toolkit()53 private static native String toolkit(); ecj()54 private static native String ecj(); 55 56 /** 57 * The value of CLASSPATH_HOME is the location that the classpath 58 * libraries and support files where installed in. It is set according to 59 * the argument for --prefix given to configure and used to set the 60 * System property gnu.classpath.home. 61 */ 62 public static final String CLASSPATH_HOME = classpath_home(); 63 64 /** 65 * The release version number of GNU Classpath. 66 * It is set according to the value of 'version' in the configure[.in] file 67 * and used to set the System property gnu.classpath.version. 68 */ 69 public static final String CLASSPATH_VERSION = "0.99"; 70 71 /** 72 * The value of DEBUG is substituted according to whether the 73 * "--enable-debug" argument was passed to configure. Code 74 * which is made conditional based on the value of this flag - typically 75 * code that generates debugging output - will be removed by the optimizer 76 * in a non-debug build. 77 */ 78 public static final boolean DEBUG = debug(); 79 80 /** 81 * The value of LOAD_LIBRARY is substituted according to whether the 82 * "--enable-load-library" or "--disable-load-library" argument was passed 83 * to configure. By default, configure should define this is as true. 84 * If set to false, loadLibrary() calls to load native function 85 * implementations, typically found in static initializers of classes 86 * which contain native functions, will be omitted. This is useful for 87 * runtimes which pre-link their native function implementations and do 88 * not require additional shared libraries to be loaded. 89 */ 90 public static final boolean INIT_LOAD_LIBRARY = false; 91 92 /** 93 * Name of default AWT peer library. 94 */ 95 public static final String default_awt_peer_toolkit = toolkit(); 96 97 /** 98 * Whether to automatically run the init* methods in java.lang.System 99 * (the default) at class initialization time or whether to have the VM 100 * explicitly invoke them. 101 * 102 * The default is false, meaning the VM does not explicitly run the 103 * initializers. 104 * 105 */ 106 public static final boolean JAVA_LANG_SYSTEM_EXPLICIT_INITIALIZATION = false; 107 108 /** 109 * The Eclipse Java Compiler jar file for use by the 110 * com.sun.tools.javac implementation in tools.zip. 111 */ 112 public static final String ECJ_JAR = ecj(); 113 114 /** 115 * Set to <code>true</code> if the config script found that (a) an 116 * implementation of java.math.BigInteger, based on the GNU MP library, is 117 * desired in preference to a pure Java one, and (b) the GNU MP library was 118 * found on the platform where the JVM is to run. Otherwise, this field is 119 * set to <code>false</code>. 120 */ 121 public static final boolean WANT_NATIVE_BIG_INTEGER = true; 122 } 123