mirror of https://gitee.com/openkylin/ant.git
80 lines
2.5 KiB
HTML
80 lines
2.5 KiB
HTML
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<!DOCTYPE html>
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<!--
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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https://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<html lang="en">
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<head>
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<link rel="stylesheet" type="text/css" href="stylesheets/style.css">
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<title>build.sysclasspath</title>
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</head>
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<body>
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<h2 id="sysclasspath">build.sysclasspath</h2>
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<p>The value of the <code>build.sysclasspath</code> property
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controls how the system classpath, i.e. the classpath in effect when
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Apache Ant is run, affects the behavior of classpaths in Ant.
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The default behavior varies from task to task.</p>
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The values and their meanings are:
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<table>
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<tr><th scope="col">value</th><th scope="col">meaning</th></tr>
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<tr>
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<td>only</td>
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<td>Only the system classpath is used and classpaths specified in build files,
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etc are ignored. This situation could be considered as the person running
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the build file knows more about the environment than the person writing the
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build file.
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</td>
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</tr>
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<tr>
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<td>ignore</td>
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<td>
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The system classpath is ignored. This situation is the reverse of the
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above. The person running the build trusts the build file writer to get the
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build file right. This mode is recommended for portable scripts.
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</td>
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</tr>
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<tr>
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<td>last</td>
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<td>
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The classpath is concatenated to any specified classpaths at the end. This
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is a compromise, where the build file writer has priority.
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</td>
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</tr>
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<tr>
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<td>first</td>
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<td>
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Any specified classpaths are concatenated to the system classpath. This is
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the other form of compromise where the build runner has priority.
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</td>
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</tr>
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</table>
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<p><em>Since Ant 1.7</em> the value of this property also affects the
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bootclasspath settings—it combines the bootclasspath that has been
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specified for a task with the bootclasspath of the JVM running
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Ant. If the property has not been set, it defaults to <q>ignore</q> in
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this case.</p>
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</body>
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</html>
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