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diff --git a/framework/src/ant/apache-ant-1.9.6/manual/Tasks/javac.html b/framework/src/ant/apache-ant-1.9.6/manual/Tasks/javac.html deleted file mode 100644 index ce542463..00000000 --- a/framework/src/ant/apache-ant-1.9.6/manual/Tasks/javac.html +++ /dev/null @@ -1,860 +0,0 @@ -<!-- - Licensed to the Apache Software Foundation (ASF) under one or more - contributor license agreements. See the NOTICE file distributed with - this work for additional information regarding copyright ownership. - The ASF licenses this file to You under the Apache License, Version 2.0 - (the "License"); you may not use this file except in compliance with - the License. You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. ---> -<html lang="en-us"> - -<head> -<meta http-equiv="Content-Language" content="en-us"> -<link rel="stylesheet" type="text/css" href="../stylesheets/style.css"> -<title>Javac Task</title> -</head> - -<body> - -<h2><a name="javac">Javac</a></h2> -<h3>Description</h3> -<p>Compiles a Java source tree.</p> -<p>The source and destination directory will be recursively scanned for Java -source files to compile. Only Java files that have no corresponding -<code>.class</code> file -or where the class file is older than the -<code>.java</code> file will be compiled.</p> -<p>Note: Apache Ant uses only the names of the source and class files to find -the classes that need a rebuild. It will not scan the source and therefore -will have no knowledge about nested classes, classes that are named different -from the source file, and so on. See the -<a href="../Tasks/depend.html"><code><depend></code></a> task -for dependency checking based on other than just -existence/modification times.</p> -<p>When the source files are part of a package, the directory structure of -the source tree should follow the package -hierarchy.</p> -<p>It is possible to refine the set of files that are being compiled. -This can be done with the <code>includes</code>, <code>includesfile</code>, -<code>excludes</code>, and <code>excludesfile</code> -attributes. With the <code>includes</code> or -<code>includesfile</code> attribute, you specify the files you want to -have included. -The <code>exclude</code> or <code>excludesfile</code> attribute is used -to specify -the files you want to have excluded. In both cases, the list of files -can be specified by either the filename, relative to the directory(s) specified -in the <code>srcdir</code> attribute or nested <code><src></code> -element(s), or by using wildcard patterns. See the section on -<a href="../dirtasks.html#directorybasedtasks">directory-based tasks</a>, -for information on how the -inclusion/exclusion of files works, and how to write wildcard patterns.</p> -<p>It is possible to use different compilers. This can be specified by -either setting the global <code>build.compiler</code> property, which will -affect all <code><javac></code> tasks throughout the build, by -setting the <code>compiler</code> attribute, specific to the current -<code><javac></code> task or by using a nested element of any -<a href="typedef.html">typedef</a>fed or -<a href="componentdef.html">componentdef</a>fed type that implements -<code>org.apache.tools.ant.taskdefs.compilers.CompilerAdapter</code>. -<a name="compilervalues">Valid values for either the -<code>build.compiler</code> property or the <code>compiler</code> -attribute are:</a></p> -<ul> - <li><code>classic</code> (the standard compiler of JDK 1.1/1.2) – - <code>javac1.1</code> and - <code>javac1.2</code> can be used as aliases.</li> - <li><code>modern</code> (the standard compiler of JDK 1.3 and later) – - <code>javac1.3</code> and - <code>javac1.4</code> and - <code>javac1.5</code> and - <code>javac1.6</code> and - <code>javac1.7</code> (<em>since Ant 1.8.2</em>) and - <code>javac1.8</code> (<em>since Ant 1.8.3</em>) and</li> - <code>javac1.9</code> (<em>since Ant 1.9.5</em>) can be used as aliases.</li> - <li><code>jikes</code> (the <a - href="http://jikes.sourceforge.net/" target="_top">Jikes</a> - compiler).</li> - <li><code>jvc</code> (the Command-Line Compiler from Microsoft's SDK - for Java / Visual J++) – <code>microsoft</code> can be used - as an alias.</li> - <li><code>kjc</code> (the <a href="http://www.dms.at/kopi/" target="_top">kopi</a> - compiler).</li> - <li><code>gcj</code> (the gcj compiler from gcc).</li> - <li><code>sj</code> (Symantec java compiler) – - <code>symantec</code> can be used as an alias.</li> - <li><code>extJavac</code> (run either modern or classic in a JVM of - its own).</li> -</ul> -<p>The default is <code>javac1.x</code> with <code>x</code> depending -on the JDK version you use while you are running Ant. -If you wish to use a different compiler interface than those -supplied, you can write a class that implements the CompilerAdapter interface -(<code>package org.apache.tools.ant.taskdefs.compilers</code>). Supply the full -classname in the <code>build.compiler</code> property or the -<code>compiler</code> attribute. -</p> -<p>The fork attribute overrides the <code>build.compiler</code> property -or <code>compiler</code> attribute setting and -expects a JDK1.1 or higher to be set in <code>JAVA_HOME</code>. -</p> -<p>You can also use the <code>compiler</code> attribute to tell Ant -which JDK version it shall assume when it puts together the command -line switches - even if you set <code>fork="true"</code>. -This is useful if you want to run the compiler of JDK 1.1 while you -current JDK is 1.2+. If you use -<code>compiler="javac1.1"</code> and (for example) -<code>depend="true"</code> Ant will use the command line -switch <code>-depend</code> instead of <code>-Xdepend</code>.</p> -<p>This task will drop all entries that point to non-existent -files/directories from the classpath it passes to the compiler.</p> -<p>The working directory for a forked executable (if any) is the - project's base directory.</p> -<p><strong>Windows Note:</strong>When the modern compiler is used -in unforked mode on Windows, it locks up the files present in the -classpath of the <code><javac></code> task, and does not release them. -The side effect of this is that you will not be able to delete or move -those files later on in the build. The workaround is to fork when -invoking the compiler.</p> -<h3>Parameters</h3> -<table border="1" cellpadding="2" cellspacing="0"> - <tr> - <td valign="top"><b>Attribute</b></td> - <td valign="top"><b>Description</b></td> - <td align="center" valign="top"><b>Required</b></td> - </tr> - <tr> - <td valign="top">srcdir</td> - <td valign="top">Location of the java files. (See the - <a href="#srcdirnote">note</a> below.)</td> - <td align="center" valign="top">Yes, unless nested <code><src></code> elements are present.</td> - </tr> - <tr> - <td valign="top">destdir</td> - <td valign="top">Location to store the class files.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">includes</td> - <td valign="top">Comma- or space-separated list of files (may be specified using - wildcard patterns) that must be - included; all <code>.java</code> files are included when omitted.</td> - <td valign="top" align="center">No</td> - </tr> - <tr> - <td valign="top">includesfile</td> - <td valign="top">The name of a file that contains a list of files to - include (may be specified using wildcard patterns).</td> - <td valign="top" align="center">No</td> - </tr> - <tr> - <td valign="top">excludes</td> - <td valign="top">Comma- or space-separated list of files (may be specified using - wildcard patterns) that must be excluded; no files (except default - excludes) are excluded when omitted.</td> - <td valign="top" align="center">No</td> - </tr> - <tr> - <td valign="top">excludesfile</td> - <td valign="top">The name of a file that contains a list of files to - exclude (may be specified using wildcard patterns).</td> - <td valign="top" align="center">No</td> - </tr> - <tr> - <td valign="top">classpath</td> - <td valign="top">The classpath to use.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">sourcepath</td> - <td valign="top">The sourcepath to use; defaults to the value of the srcdir attribute (or nested <code><src></code> elements). - To suppress the sourcepath switch, use <code>sourcepath=""</code>.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">bootclasspath</td> - <td valign="top"> - Location of bootstrap class files. (See <a href="#bootstrap">below</a> - for using the -X and -J-X parameters for specifying - the bootstrap classpath). - </td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">classpathref</td> - <td valign="top">The classpath to use, given as a - <a href="../using.html#references">reference</a> to a path defined elsewhere.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">sourcepathref</td> - <td valign="top">The sourcepath to use, given as a - <a href="../using.html#references">reference</a> to a path defined elsewhere.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">bootclasspathref</td> - <td valign="top">Location of bootstrap class files, given as a - <a href="../using.html#references">reference</a> to a path defined elsewhere.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">extdirs</td> - <td valign="top">Location of installed extensions.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">encoding</td> - <td valign="top">Encoding of source files. (Note: gcj doesn't support - this option yet.)</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">nowarn</td> - <td valign="top">Indicates whether the <code>-nowarn</code> switch - should be passed to the compiler; defaults to <code>off</code>.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">debug</td> - <td valign="top">Indicates whether source should be compiled with - debug information; defaults to <code>off</code>. If set to - <code>off</code>, <code>-g:none</code> will be passed on the - command line for compilers that support it (for other compilers, no - command line argument will be used). If set to <code>true</code>, - the value of the <code>debuglevel</code> attribute determines the - command line argument.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">debuglevel</td> - <td valign="top">Keyword list to be appended to the <code>-g</code> - command-line switch. This will be ignored by all implementations except - <code>modern</code>, <code>classic(ver >= 1.2)</code> and <code>jikes</code>. - Legal values are <code>none</code> or a comma-separated list of the - following keywords: - <code>lines</code>, <code>vars</code>, and <code>source</code>. - If <code>debuglevel</code> is not specified, by default, - nothing will be - appended to <code>-g</code>. If <code>debug</code> is not turned on, - this attribute will be ignored. - </td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">optimize</td> - <td valign="top"> - Indicates whether source should be compiled with - optimization; defaults to <code>off</code>. <strong>Note</strong> - that this flag is just ignored by Sun's <code>javac</code> starting - with JDK 1.3 (since compile-time optimization is unnecessary). - </td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">deprecation</td> - <td valign="top">Indicates whether source should be compiled with - deprecation information; defaults to <code>off</code>.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">target</td> - <td valign="top">Generate class files for specific VM version - (e.g., <code>1.1</code> or <code>1.2</code>). <b>Note that the - default value depends on the JVM that is running Ant. In - particular, if you use JDK 1.4+ the generated classes will not be - usable for a 1.1 Java VM unless you explicitly set this attribute - to the value 1.1 (which is the default value for JDK 1.1 to - 1.3). We highly recommend to always specify this - attribute.</b><br> - A default value for this attribute can be provided using the magic - <a - href="../javacprops.html#target"><code>ant.build.javac.target</code></a> - property.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">verbose</td> - <td valign="top">Asks the compiler for verbose output; defaults to - <code>no</code>.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">depend</td> <td valign="top">Enables dependency-tracking - for compilers that support this (<code>jikes</code> and - <code>classic</code>).</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">includeAntRuntime</td> - <td valign="top">Whether to include the Ant run-time libraries in the - classpath; defaults to <code>yes</code>, unless - <a href="../sysclasspath.html"><code>build.sysclasspath</code></a> is set. - <em>It is usually best to set this to false</em> so the script's behavior is not - sensitive to the environment in which it is run.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">includeJavaRuntime</td> - <td valign="top">Whether to include the default run-time - libraries from the executing VM in the classpath; - defaults to <code>no</code>.<br/> - <b>Note:</b> In some setups the run-time libraries may be part - of the "Ant run-time libraries" so you may need to explicitly - set includeAntRuntime to false to ensure that the Java - run-time libraries are not included.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">fork</td> - <td valign="top">Whether to execute <code>javac</code> using the - JDK compiler externally; defaults to <code>no</code>.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">executable</td> - <td valign="top">Complete path to the <code>javac</code> - executable to use in case of <code>fork="yes"</code>. - Defaults to the compiler of the Java version that is currently - running Ant. Ignored if <code>fork="no"</code>.<br> - Since Ant 1.6 this attribute can also be used to specify the - path to the executable when using jikes, jvc, gcj or sj.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">memoryInitialSize</td> - <td valign="top">The initial size of the memory for the underlying VM, - if <code>javac</code> is run externally; ignored otherwise. Defaults - to the standard VM memory setting. - (Examples: <code>83886080</code>, <code>81920k</code>, or - <code>80m</code>)</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">memoryMaximumSize</td> - <td valign="top">The maximum size of the memory for the underlying VM, - if <code>javac</code> is run externally; ignored otherwise. Defaults - to the standard VM memory setting. - (Examples: <code>83886080</code>, <code>81920k</code>, or - <code>80m</code>)</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">failonerror</td> - <td valign="top">Indicates whether compilation errors - will fail the build; defaults to <code>true</code>.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">errorProperty</td> - <td valign="top"> - The property to set (to the value "true") if compilation fails. - <em>Since Ant 1.7.1</em>. - </td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">source</td> - - <td valign="top">Value of the <code>-source</code> command-line - switch; will be ignored by all implementations prior to - <code>javac1.4</code> (or <code>modern</code> when Ant is not - running in a 1.3 VM), <code>gcj</code> and <code>jikes</code>.<br> - If you use this attribute together with <code>gcj</code> - or <code>jikes</code>, you must make sure that your version - supports the <code>-source</code> (or <code>-fsource</code> for - gcj) - switch. By default, no <code>-source</code> argument will be used - at all.<br> - <b>Note that the default value depends on the JVM that is running - Ant. We highly recommend to always specify this - attribute.</b><br> - A default value for this attribute can be provided using the magic - <a - href="../javacprops.html#source"><code>ant.build.javac.source</code></a> - property.</td> - - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">compiler</td> - <td valign="top">The compiler implementation to use. - If this attribute is not set, the value of the - <code>build.compiler</code> property, if set, will be used. - Otherwise, the default compiler for the current VM will be used. - (See the above <a href="#compilervalues">list</a> of valid - compilers.)</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">listfiles</td> - <td valign="top">Indicates whether the source files to be compiled will - be listed; defaults to <code>no</code>.</td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">tempdir</td> - <td valign="top">Where Ant should place temporary files. - This is only used if the task is forked and the - command line args length exceeds 4k. - <em>Since Ant 1.6</em>.</td> - <td align="center" valign="top"> - No; default is <i>java.io.tmpdir</i>. - </td> - </tr> - <tr> - <td valign="top">updatedProperty</td> - <td valign="top"> - The property to set (to the value "true") - if compilation has taken place - and has been successful. - <em>Since Ant 1.7.1</em>. - </td> - <td align="center" valign="top">No</td> - </tr> - <tr> - <td valign="top">includeDestClasses</td> - <td valign="top"> - This attribute controls whether to include the - destination classes directory in the classpath - given to the compiler. - The default value of this is "true" and this - means that previously compiled classes are on - the classpath for the compiler. This means that "greedy" compilers - will not recompile dependent classes that are already compiled. - In general this is a good thing as it stops the compiler - for doing unnecessary work. However, for some edge cases, - involving generics, the javac compiler - needs to compile the dependent classes to get the generics - information. One example is documented in the bug report: - <a href="http://issues.apache.org/bugzilla/show_bug.cgi?id=40776"> - Bug 40776 - a problem compiling a Java 5 project with generics</a>. - Setting the attribute to "false" will cause the compiler - to recompile dependent classes. - <em>Since Ant 1.7.1</em>. - </td> - <td align="center" valign="top">No - default is "true"</td> - </tr> - <tr> - <td valign="top">createMissingPackageInfoClass</td> - <td valign="top"> - Some package level annotations in <code>package-info.java</code> - files don't create any <code>package-info.class</code> files so - Ant would recompile the same file every time.<br/> - Starting with Ant 1.8 Ant will create an - empty <code>package-info.class</code> for - each <code>package-info.java</code> if there isn't one created - by the compiler.<br/> - In some setups this additional class causes problems and it can - be suppressed by setting this attribute to "false". - <em>Since Ant 1.8.3</em>. - </td> - <td align="center" valign="top">No - default is "true"</td> - </tr> -</table> - -<h3>Parameters specified as nested elements</h3> -<p>This task forms an implicit <a href="../Types/fileset.html">FileSet</a> and -supports most attributes of <code><fileset></code> -(<code>dir</code> becomes <code>srcdir</code>) as well as the nested -<code><include></code>, <code><exclude></code> and -<code><patternset></code> elements.</p> -<h4><code>srcdir</code>, <code>classpath</code>, <code>sourcepath</code>, -<code>bootclasspath</code> and <code>extdirs</code></h4> -<p><code><javac></code>'s <code>srcdir</code>, <code>classpath</code>, -<code>sourcepath</code>, <code>bootclasspath</code>, and -<code>extdirs</code> attributes are -<a href="../using.html#path">path-like structures</a> -and can also be set via nested -<code><src></code> (note the different name!), -<code><classpath></code>, -<code><sourcepath></code>, -<code><bootclasspath></code> and -<code><extdirs></code> elements, respectively.</p> - -<h4>compilerarg</h4> - -<p>You can specify additional command line arguments for the compiler -with nested <code><compilerarg></code> elements. These elements -are specified like <a href="../using.html#arg">Command-line -Arguments</a> but have an additional attribute that can be used to -enable arguments only if a given compiler implementation will be -used.</p> -<table border="1" cellpadding="2" cellspacing="0"> -<tr> - <td width="12%" valign="top"><b>Attribute</b></td> - <td width="78%" valign="top"><b>Description</b></td> - <td width="10%" valign="top"><b>Required</b></td> -</tr> - <tr> - <td valign="top">value</td> - <td align="center" rowspan="4">See - <a href="../using.html#arg">Command-line Arguments</a>.</td> - <td align="center" rowspan="4">Exactly one of these.</td> - </tr> - <tr> - <td valign="top">line</td> - </tr> - <tr> - <td valign="top">file</td> - </tr> - <tr> - <td valign="top">path</td> - </tr> - <tr> - <td valign="top">prefix</td> - <td align="center" rowspan="2">See - <a href="../using.html#arg">Command-line Arguments</a>. - <em>Since Ant 1.8.</em></td> - <td valign="top" align="center">No</td> - </tr> - <tr> - <td valign="top">suffix</td> - <td valign="top" align="center">No</td> - </tr> - <tr> - <td valign="top">compiler</td> - <td>Only pass the specified argument if the chosen - compiler implementation matches the value of this attribute. - Legal values are the - same as those in the above <a href="#compilervalues">list</a> of valid - compilers.)</td> - <td align="center">No</td> - </tr> -</table> - -<h4>compilerclasspath <em>since Ant 1.8.0</em></h4> - -<p>A <a href="../using.html#path">PATH like structure</a> holding the - classpath to use when loading the compiler implementation if a - custom class has been specified. Doesn't have any effect when - using one of the built-in compilers.</p> - -<h4>Any nested element of a type that implements CompilerAdapter - <em>since Ant 1.8.0</em></h4> - -<p>If a defined type implements the <code>CompilerAdapter</code> - interface a nested element of that type can be used as an - alternative to the <code>compiler</code> attribute.</p> - -<h3>Examples</h3> -<pre> <javac srcdir="${src}" - destdir="${build}" - classpath="xyz.jar" - debug="on" - source="1.4" - /></pre> -<p>compiles all <code>.java</code> files under the <code>${src}</code> -directory, and stores -the <code>.class</code> files in the <code>${build}</code> directory. -The classpath used includes <code>xyz.jar</code>, and compiling with -debug information is on. The source level is 1.4, -so you can use <code>assert</code> statements.</p> - -<pre> <javac srcdir="${src}" - destdir="${build}" - fork="true" - source="1.2" - target="1.2" - /></pre> -<p>compiles all <code>.java</code> files under the <code>${src}</code> -directory, and stores the <code>.class</code> files in the -<code>${build}</code> directory. This will fork off the javac -compiler using the default <code>javac</code> executable. -The source level is 1.2 (similar to 1.1 or 1.3) and -the class files should be runnable under JDK 1.2+ as well.</p> - -<pre> <javac srcdir="${src}" - destdir="${build}" - fork="java$$javac.exe" - source="1.5" - /></pre> -<p>compiles all <code>.java</code> files under the <code>${src}</code> -directory, and stores the <code>.class</code> files in the -<code>${build}</code> directory. This will fork off the javac -compiler, using the executable named <code>java$javac.exe</code>. Note -that the <code>$</code> sign needs to be escaped by a second one. -The source level is 1.5, so you can use generics.</p> - -<pre> <javac srcdir="${src}" - destdir="${build}" - includes="mypackage/p1/**,mypackage/p2/**" - excludes="mypackage/p1/testpackage/**" - classpath="xyz.jar" - debug="on" - /></pre> -<p>compiles <code>.java</code> files under the <code>${src}</code> -directory, and stores the -<code>.class</code> files in the <code>${build}</code> directory. -The classpath used includes <code>xyz.jar</code>, and debug information is on. -Only files under <code>mypackage/p1</code> and <code>mypackage/p2</code> are -used. All files in and below the <code>mypackage/p1/testpackage</code> -directory are excluded from compilation. -You didn't specify a source or target level, -so the actual values used will depend on which JDK you ran Ant with.</p> - -<pre> <javac srcdir="${src}:${src2}" - destdir="${build}" - includes="mypackage/p1/**,mypackage/p2/**" - excludes="mypackage/p1/testpackage/**" - classpath="xyz.jar" - debug="on" - /></pre> - -<p>is the same as the previous example, with the addition of a second -source path, defined by -the property <code>src2</code>. This can also be represented using nested -<code><src></code> elements as follows:</p> - -<pre> <javac destdir="${build}" - classpath="xyz.jar" - debug="on"> - <src path="${src}"/> - <src path="${src2}"/> - <include name="mypackage/p1/**"/> - <include name="mypackage/p2/**"/> - <exclude name="mypackage/p1/testpackage/**"/> - </javac></pre> - -<p>If you want to run the javac compiler of a different JDK, you -should tell Ant, where to find the compiler and which version of JDK -you will be using so it can choose the correct command line switches. -The following example executes a JDK 1.1 javac in a new process and -uses the correct command line switches even when Ant is running in a -Java VM of a different version:</p> - -<pre> <javac srcdir="${src}" - destdir="${build}" - fork="yes" - executable="/opt/java/jdk1.1/bin/javac" - compiler="javac1.1" - /></pre> - -<p><a name="srcdirnote"><b>Note:</b></a> -If you wish to compile only source files located in certain packages below a -common root, use the <code>include</code>/<code>exclude</code> attributes -or <code><include></code>/<code><exclude></code> nested elements -to filter for these packages. Do not include part of your package structure -in the <code>srcdir</code> attribute -(or nested <code><src></code> elements), or Ant will recompile your -source files every time you run your compile target. See the -<a href="http://ant.apache.org/faq.html#always-recompiles">Ant FAQ</a> -for additional information.</p> - -<p> -If you wish to compile only files explicitly specified and disable -javac's default searching mechanism then you can unset the sourcepath -attribute: -<pre> <javac sourcepath="" srcdir="${src}" - destdir="${build}" > - <include name="**/*.java"/> - <exclude name="**/Example.java"/> - </javac></pre> -That way the javac will compile all java source files under "${src}" -directory but skip the examples. The compiler will even produce errors if some of -the non-example files refers to them. -</p> - -<p> -If you wish to compile with a special JDK (another than the one Ant is currently using), -set the <code>executable</code> and <code>fork</code> attribute. Using <code>taskname</code> -could show in the log, that these settings are fix. -<pre> <javac srcdir="" - destdir="" - executable="path-to-java14-home/bin/javac" - fork="true" - taskname="javac1.4" /></pre> -</p> - - -<p><b>Note:</b> If you are using Ant on Windows and a new DOS window pops up -for every use of an external compiler, this may be a problem of the JDK you are -using. This problem may occur with all JDKs < 1.2.</p> - - -<p> -If you want to activate other compiler options like <i>lint</i> you could use -the <tt><compilerarg></tt> element: -<pre> <javac srcdir="${src.dir}" - destdir="${classes.dir}" - classpathref="libraries"> - <compilerarg value="-Xlint"/> - </javac> </pre> -</p> - -<p>If you want to use a custom - CompilerAdapter <code>org.example.MyAdapter</code> you can either - use the compiler attribute:</p> -<pre> -<javac srcdir="${src.dir}" - destdir="${classes.dir}" - compiler="org.example.MyAdapter"/> -</pre> -<p>or a define a type and nest this into the task like in:</p> -<pre> -<componentdef classname="org.example.MyAdapter" - name="myadapter"/> -<javac srcdir="${src.dir}" - destdir="${classes.dir}"> - <myadapter/> -</javac> -</pre> -<p>in which case your compiler adapter can support attributes and - nested elements of its own.</p> - -<h3>Jikes Notes</h3> - -<p>You need Jikes 1.15 or later.</p> - -<p>Jikes supports some extra options, which can be set be defining -the properties shown below prior to invoking the task. The setting -for each property will be in affect for all <code><javac></code> -tasks throughout the build. -The Ant developers are aware that -this is ugly and inflexible – expect a better solution in the future. -All the options are boolean, and must be set to <code>true</code> or -<code>yes</code> to be -interpreted as anything other than false. By default, -<code>build.compiler.warnings</code> is <code>true</code>, -while all others are <code>false</code>.</p> - -<table border="1" cellpadding="2" cellspacing="0"> - <tr> - <td valign="top"><b>Property</b></td> - <td valign="top"><b>Description</b></td> - <td align="center" valign="top"><b>Default</b></td> - </tr> - <tr> - <td valign="top"> - build.compiler.emacs - </td> - <td valign="top"> - Enable emacs-compatible error messages. - </td> - <td valign="top"> - <code>false</code> - </td> - </tr> - <tr> - <td valign="top"> - build.compiler.fulldepend - </td> - <td valign="top"> - Enable full dependency checking; see<br> - the <code>+F</code> switch in the Jikes manual. - </td> - <td valign="top"> - <code>false</code> - </td> - </tr> - <tr> - <td valign="top"> - build.compiler.pedantic - </td> - <td valign="top"> - Enable pedantic warnings. - </td> - <td valign="top"> - <code>false</code> - </td> - </tr> - <tr> - <td valign="top"> - build.compiler.warnings<br> - <strong>Deprecated</strong>. Use - <code><javac></code>'s <code>nowarn</code> - attribute instead. - </td> - <td valign="top"> - Don't disable warning messages. - </td> - <td valign="top"> - <code>true</code> - </td> - </tr> -</table> - -<h3>Jvc Notes</h3> - -<p>Jvc will enable Microsoft extensions unless you set the property -<code>build.compiler.jvc.extensions</code> to false before invoking -<code><javac></code>.</p> - -<h3><a name="bootstrap">Bootstrap Options</h3> -<p> - The Sun javac compiler has a <em>bootclasspath</em> command - line option - this corresponds to the "bootclasspath" attribute/element - of the <javac> task. The Sun compiler also allows more - control over the boot classpath using the -X and -J-X attributes. - One can set these by using the <compilerarg>. Since Ant 1.6.0, - there is a shortcut to convert path references to strings that - can by used in an OS independent fashion (see - <a href="../using.html#pathshortcut">pathshortcut</a>). For example: -</p> -<pre> - <path id="lib.path.ref"> - <fileset dir="lib" includes="*.jar"/> - </path> - <javac srcdir="src" destdir="classes"> - <compilerarg arg="-Xbootclasspath/p:${toString:lib.path.ref}"/> - </javac> -</pre> - - -</p> - -<h3>OpenJDK Notes</h3> -<p> - The <a href="https://openjdk.dev.java.net/">openjdk</a> - project has provided the javac - <a href="https://openjdk.dev.java.net/compiler/">compiler</a> - as an opensource project. The output of this project is a - <code>javac.jar</code> which contains the javac compiler. - This compiler may be used with the <code><javac></code> task with - the use of a <code>-Xbootclasspath/p</code> java argument. The argument needs - to be given to the runtime system of the javac executable, so it needs - to be prepended with a "-J". For example: - -<blockquote><pre> - <property name="patched.javac.jar" - location="${my.patched.compiler}/dist/lib/javac.jar"/> - - <presetdef name="patched.javac"> - <javac fork="yes"> - <compilerarg value="-J-Xbootclasspath/p:${patched.javac.jar}"/> - </javac> - </presetdef> - - - <patched.javac srcdir="src/java" destdir="build/classes" - debug="yes"/> -</pre></blockquote> - - <h3>Note on package-info.java</h3> - <p> - <code>package-info.java</code> files were introduced in Java5 to - allow package level annotations. On compilation, if the java file - does not contain runtime annotations, there will be no .class file - for the java file. Up to <b>Ant 1.7.1</b>, when the <javac> - task is run again, the - task will try to compile the package-info java files again. - </p> - <p>With Ant 1.7.1 a different kind of logic was introduced that - involved the timestamp of the directory that would normally - contain the .class file. This logic turned out to lead to Ant not - recompiling <code>package-info.java</code> in certain setup.</p> - <p>Starting with Ant 1.8.0 Ant will create - "empty" <code>package-info.class</code> files if it compiles - a <code>package-info.java</code> and - no <code>package-info.class</code> file has been created by the - compiler itself.</p> -</body> -</html> |