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| author |   Ashlee Young <ashlee@onosfw.com> | 2015-10-23 10:00:02 -0700 |
|---|---|---|
| committer | Ashlee Young <ashlee@onosfw.com> | 2015-10-23 10:00:02 -0700 |
| commit | 753a6c60f47f3ac4f270005b65e9d6481de8eb68 (patch) | |
| tree | 3d0a1ae3b4d994550f6614b417b991eee3eb8911 /framework/src/ant/apache-ant-1.9.6/manual/Tasks/javah.html | |
| parent | c62d20eb3b4620c06d833be06f50b2600d96dd42 (diff) | |
Adding maven and ant source trees
Change-Id: I0a39b9add833a31b9c3f98d193983ae2f3a5a445
Signed-off-by: Ashlee Young <ashlee@onosfw.com>
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/manual/Tasks/javah.html')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/manual/Tasks/javah.html | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/manual/Tasks/javah.html b/framework/src/ant/apache-ant-1.9.6/manual/Tasks/javah.html new file mode 100644 index 00000000..34a7b875 --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/manual/Tasks/javah.html @@ -0,0 +1,243 @@ +<!-- + 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> + +<head> +<meta http-equiv="Content-Language" content="en-us"> +<link rel="stylesheet" type="text/css" href="../stylesheets/style.css"> +<title>Javah Task</title> +</head> + +<body> + +<h2><a name="javah">Javah</a></h2> +<h3>Description</h3> +<p>Generates JNI headers from a Java class.</p> +<p> When this task executes, it will generate the C header and source files that +are needed to implement native methods. JNI operates differently depending on +whether <a href="http://docs.oracle.com/javase/7/docs/technotes/tools/windows/javah.html">JDK1.2+</a> +or <a href="http://java.sun.com/products/jdk/1.1/docs/tooldocs/win32/javah.html">pre-JDK1.2</a> +systems are used.</p> + +<p>It is possible to use different compilers. This can be selected +with the <code>implementation</code> attribute or a nested element. <a +name="implementationvalues">Here are the choices of the attribute</a>:</p> +<ul> + <li>default - the default compiler (kaffeh or sun) for the platform.</li> + <li>sun (the standard compiler of the JDK)</li> + <li>kaffeh (the native standard compiler of <a href="http://www.kaffe.org" target="_top">Kaffe</a>)</li> + <li>gcjh (the native standard compiler + of <a href="http://gcc.gnu.org/java/" + target="_top">gcj and gij</a>) <em>since Apache Ant 1.8.2</em></li> +</ul> + +<p><b>Note:</b> if you are using this task to work on multiple files + the command line may become too long on some operating systems. + Unfortunately the javah command doesn't support command argument + files the way javac (for example) does, so all that can be done is + breaking the amount of classes to compile into smaller chunks.</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 valign="top" align="center"><b>Required</b></td> + </tr> + <tr> + <td valign="top">class</td> + <td valign="top">the fully-qualified name of the class (or classes, + separated by commas)</td> + <td align="center" valign="top">Yes</td> + </tr> + <tr> + <td valign="top">outputFile</td> + <td valign="top">concatenates the resulting header or source files for all the classes listed into this file</td> + <td align="center" valign="middle" rowspan="2">Yes</td> + </tr> + <tr> + <td valign="top">destdir</td> + <td valign="top">sets the directory where javah saves the header files or the + stub files.</td> + </tr> + <tr> + <td valign="top">force</td> + <td valign="top">specifies that output files should always be written (JDK1.2 only)</td> + <td valign="top" align="center">No</td> + </tr> + <tr> + <td valign="top">old</td> + <td valign="top">specifies that old JDK1.0-style header files should be generated + (otherwise output file contain JNI-style native method function prototypes) (JDK1.2 only)</td> + <td valign="top" align="center">No</td> + </tr> + <tr> + <td valign="top">stubs</td> + <td valign="top">generate C declarations from the Java object file (used with old)</td> + <td valign="top" align="center">No</td> + </tr> + <tr> + <td valign="top">verbose</td> + <td valign="top">causes Javah to print a message concerning the status of the generated files</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">bootclasspath</td> + <td valign="top">location of bootstrap class files.</td> + <td valign="top" align="center">No</td> + </tr> + <tr> + <td valign="top">extdirs</td> + <td valign="top"> location of installed extensions.</td> + <td valign="top" align="center">No</td> + </tr> + <tr> + <td valign="top">implementation</td> + <td valign="top">The compiler implementation to use. If this + attribute is not set, the default compiler for the current VM + will be used. (See the above <a + href="#implementationvalues">list</a> of valid compilers.)</td> + <td align="center" valign="top">No</td> + </tr> +</table> +<p>Either outputFile or destdir must be supplied, but not both. </p> + +<h3>Parameters specified as nested elements</h3> + +<h4>arg</h4> + +<p>You can specify additional command line arguments for the compiler +with nested <code><arg></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">implementation</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="#implementationvalues">list</a> of valid compilers.)</td> + <td align="center">No</td> + </tr> +</table> + +<h4>implementationclasspath <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 JavahAdapter + <em>since Ant 1.8.0</em></h4> + +<p>If a defined type implements the <code>JavahAdapter</code> + interface a nested element of that type can be used as an + alternative to the <code>implementation</code> attribute.</p> + +<h3>Examples</h3> +<pre> <javah destdir="c" class="org.foo.bar.Wibble"/></pre> +<p>makes a JNI header of the named class, using the JDK1.2 JNI model. Assuming +the directory 'c' already exists, the file <tt>org_foo_bar_Wibble.h</tt> +is created there. If this file already exists, it is left unchanged.</p> +<pre> <javah outputFile="wibble.h"> + <class name="org.foo.bar.Wibble,org.foo.bar.Bobble"/> + </javah></pre> +<p>is similar to the previous example, except the output is written to a file +called <tt>wibble.h</tt> +in the current directory.</p> +<pre> <javah destdir="c" force="yes"> + <class name="org.foo.bar.Wibble"/> + <class name="org.foo.bar.Bobble"/> + <class name="org.foo.bar.Tribble"/> + </javah></pre> +<p>writes three header files, one for each of the classes named. Because the +force option is set, these header files are always written when the Javah task +is invoked, even if they already exist.</p> +<pre> <javah destdir="c" verbose="yes" old="yes" force="yes"> + <class name="org.foo.bar.Wibble"/> + <class name="org.foo.bar.Bobble"/> + <class name="org.foo.bar.Tribble"/> + </javah> + <javah destdir="c" verbose="yes" stubs="yes" old="yes" force="yes"> + <class name="org.foo.bar.Wibble"/> + <class name="org.foo.bar.Bobble"/> + <class name="org.foo.bar.Tribble"/> + </javah></pre> +<p>writes the headers for the three classes using the 'old' JNI format, then +writes the corresponding .c stubs. The verbose option will cause Javah to +describe its progress.</p> + +<p>If you want to use a custom + JavahAdapter <code>org.example.MyAdapter</code> you can either + use the implementation attribute:</p> +<pre> +<javah destdir="c" class="org.foo.bar.Wibble" + implementation="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"/> +<javah destdir="c" class="org.foo.bar.Wibble"> + <myadapter/> +</javah> +</pre> +<p>in which case your javah adapter can support attributes and + nested elements of its own.</p> + +</body> + +</html> |