| author | mdoerr |
| Tue, 03 Jan 2017 17:17:14 +0100 | |
| changeset 43421 | 077af5bb5fa4 |
| parent 41040 | 7b919a4497ff |
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<title>OpenJDK Build README</title> |
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<p><img src="http://openjdk.java.net/images/openjdk.png" alt="OpenJDK" title="" /></p> |
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<h1>OpenJDK Build README</h1> |
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<hr /> |
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<p><a name="introduction"></a></p> |
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<h2>Introduction</h2> |
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<p>This README file contains build instructions for the |
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<a href="http://openjdk.java.net">OpenJDK</a>. Building the source code for the OpenJDK |
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requires a certain degree of technical expertise.</p> |
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<h3>!!!!!!!!!!!!!!! THIS IS A MAJOR RE-WRITE of this document. !!!!!!!!!!!!!</h3> |
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<p>Some Headlines:</p> |
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<ul> |
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<li>The build is now a "<code>configure && make</code>" style build</li> |
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<li>Any GNU make 3.81 or newer should work, except on Windows where 4.0 or newer |
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is recommended.</li> |
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<li>The build should scale, i.e. more processors should cause the build to be |
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done in less wall-clock time</li> |
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<li>Nested or recursive make invocations have been significantly reduced, |
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as has the total fork/exec or spawning of sub processes during the build</li> |
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<li>Windows MKS usage is no longer supported</li> |
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<li>Windows Visual Studio <code>vsvars*.bat</code> and <code>vcvars*.bat</code> files are run |
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automatically</li> |
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<li>Ant is no longer used when building the OpenJDK</li> |
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<li>Use of ALT_* environment variables for configuring the build is no longer |
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supported</li> |
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</ul> |
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<hr /> |
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<h2>Contents</h2> |
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<ul> |
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<li><a href="#introduction">Introduction</a></li> |
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<li><a href="#hg">Use of Mercurial</a> |
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<ul> |
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<li><a href="#get_source">Getting the Source</a></li> |
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<li><a href="#repositories">Repositories</a></li> |
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</ul></li> |
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<li><a href="#building">Building</a> |
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<ul> |
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<li><a href="#setup">System Setup</a> |
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<ul> |
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<li><a href="#linux">Linux</a></li> |
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<li><a href="#solaris">Solaris</a></li> |
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<li><a href="#macosx">Mac OS X</a></li> |
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<li><a href="#windows">Windows</a></li> |
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</ul></li> |
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<li><a href="#configure">Configure</a></li> |
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<li><a href="#make">Make</a></li> |
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</ul></li> |
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<li><a href="#testing">Testing</a></li> |
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</ul> |
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<hr /> |
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<ul> |
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<li><a href="#hints">Appendix A: Hints and Tips</a> |
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<ul> |
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<li><a href="#faq">FAQ</a></li> |
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<li><a href="#performance">Build Performance Tips</a></li> |
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<li><a href="#troubleshooting">Troubleshooting</a></li> |
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</ul></li> |
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<li><a href="#gmake">Appendix B: GNU Make Information</a></li> |
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<li><a href="#buildenvironments">Appendix C: Build Environments</a></li> |
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</ul> |
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<hr /> |
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<p><a name="hg"></a></p> |
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<h2>Use of Mercurial</h2> |
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<p>The OpenJDK sources are maintained with the revision control system |
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<a href="http://mercurial.selenic.com/wiki/Mercurial">Mercurial</a>. If you are new to |
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Mercurial, please see the <a href="http://mercurial.selenic.com/wiki/ |
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BeginnersGuides">Beginner Guides</a> or refer to the <a href="http://hgbook.red-bean.com/">Mercurial Book</a>. |
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The first few chapters of the book provide an excellent overview of Mercurial, |
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what it is and how it works.</p> |
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<p>For using Mercurial with the OpenJDK refer to the <a href="http://openjdk.java.net/guide/ |
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repositories.html#installConfig">Developer Guide: Installing |
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and Configuring Mercurial</a> section for more information.</p> |
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<p><a name="get_source"></a></p> |
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<h3>Getting the Source</h3> |
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<p>To get the entire set of OpenJDK Mercurial repositories use the script |
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<code>get_source.sh</code> located in the root repository:</p> |
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<pre><code> hg clone http://hg.openjdk.java.net/jdk9/jdk9 YourOpenJDK |
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cd YourOpenJDK |
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bash ./get_source.sh |
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</code></pre> |
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<p>Once you have all the repositories, keep in mind that each repository is its |
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own independent repository. You can also re-run <code>./get_source.sh</code> anytime to |
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pull over all the latest changesets in all the repositories. This set of |
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nested repositories has been given the term "forest" and there are various |
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ways to apply the same <code>hg</code> command to each of the repositories. For |
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example, the script <code>make/scripts/hgforest.sh</code> can be used to repeat the |
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same <code>hg</code> command on every repository, e.g.</p> |
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<pre><code> cd YourOpenJDK |
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bash ./make/scripts/hgforest.sh status |
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</code></pre> |
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<p><a name="repositories"></a></p> |
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<h3>Repositories</h3> |
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<p>The set of repositories and what they contain:</p> |
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<ul> |
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<li><strong>. (root)</strong> contains common configure and makefile logic</li> |
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<li><strong>hotspot</strong> contains source code and make files for building the OpenJDK |
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Hotspot Virtual Machine</li> |
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<li><strong>langtools</strong> contains source code for the OpenJDK javac and language tools</li> |
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<li><strong>jdk</strong> contains source code and make files for building the OpenJDK runtime |
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libraries and misc files</li> |
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<li><strong>jaxp</strong> contains source code for the OpenJDK JAXP functionality</li> |
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<li><strong>jaxws</strong> contains source code for the OpenJDK JAX-WS functionality</li> |
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<li><strong>corba</strong> contains source code for the OpenJDK Corba functionality</li> |
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<li><strong>nashorn</strong> contains source code for the OpenJDK JavaScript implementation</li> |
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</ul> |
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<h3>Repository Source Guidelines</h3> |
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<p>There are some very basic guidelines:</p> |
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<ul> |
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<li>Use of whitespace in source files (.java, .c, .h, .cpp, and .hpp files) is |
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restricted. No TABs, no trailing whitespace on lines, and files should not |
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terminate in more than one blank line.</li> |
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<li>Files with execute permissions should not be added to the source |
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repositories.</li> |
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<li>All generated files need to be kept isolated from the files maintained or |
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managed by the source control system. The standard area for generated files |
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is the top level <code>build/</code> directory.</li> |
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<li>The default build process should be to build the product and nothing else, |
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in one form, e.g. a product (optimized), debug (non-optimized, -g plus |
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assert logic), or fastdebug (optimized, -g plus assert logic).</li> |
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<li>The <code>.hgignore</code> file in each repository must exist and should include |
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<code>^build/</code>, <code>^dist/</code> and optionally any <code>nbproject/private</code> directories. <strong>It |
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should NEVER</strong> include anything in the <code>src/</code> or <code>test/</code> or any managed |
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directory area of a repository.</li> |
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<li>Directory names and file names should never contain blanks or non-printing |
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characters.</li> |
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<li>Generated source or binary files should NEVER be added to the repository |
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(that includes <code>javah</code> output). There are some exceptions to this rule, in |
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particular with some of the generated configure scripts.</li> |
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<li>Files not needed for typical building or testing of the repository should |
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not be added to the repository.</li> |
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</ul> |
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<hr /> |
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<p><a name="building"></a></p> |
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<h2>Building</h2> |
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<p>The very first step in building the OpenJDK is making sure the system itself |
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has everything it needs to do OpenJDK builds. Once a system is setup, it |
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generally doesn't need to be done again.</p> |
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<p>Building the OpenJDK is now done with running a <code>configure</code> script which will |
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try and find and verify you have everything you need, followed by running |
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<code>make</code>, e.g.</p> |
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<blockquote> |
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<p><strong><code>bash ./configure</code></strong> <br /> |
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<strong><code>make all</code></strong></p> |
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</blockquote> |
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<p>Where possible the <code>configure</code> script will attempt to located the various |
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components in the default locations or via component specific variable |
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settings. When the normal defaults fail or components cannot be found, |
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additional <code>configure</code> options may be necessary to help <code>configure</code> find the |
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necessary tools for the build, or you may need to re-visit the setup of your |
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system due to missing software packages.</p> |
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<p><strong>NOTE:</strong> The <code>configure</code> script file does not have execute permissions and |
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will need to be explicitly run with <code>bash</code>, see the source guidelines.</p> |
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<hr /> |
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<p><a name="setup"></a></p> |
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<h3>System Setup</h3> |
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<p>Before even attempting to use a system to build the OpenJDK there are some very |
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basic system setups needed. For all systems:</p> |
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<ul> |
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<li><p>Be sure the GNU make utility is version 3.81 (4.0 on windows) or newer, e.g. |
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run "<code>make -version</code>"</p> |
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<p><a name="bootjdk"></a></p></li> |
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<li><p>Install a Bootstrap JDK. All OpenJDK builds require access to a previously |
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released JDK called the <em>bootstrap JDK</em> or <em>boot JDK.</em> The general rule is |
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that the bootstrap JDK must be an instance of the previous major release of |
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the JDK. In addition, there may be a requirement to use a release at or |
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beyond a particular update level.</p> |
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<p><strong><em>Building JDK 9 requires JDK 8. JDK 9 developers should not use JDK 9 as |
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the boot JDK, to ensure that JDK 9 dependencies are not introduced into the |
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parts of the system that are built with JDK 8.</em></strong></p> |
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<p>The JDK 8 binaries can be downloaded from Oracle's <a href="http://www.oracle.com/technetwork/java/javase/downloads/index.html">JDK 8 download |
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site</a>. |
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For build performance reasons it is very important that this bootstrap JDK |
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be made available on the local disk of the machine doing the build. You |
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should add its <code>bin</code> directory to the <code>PATH</code> environment variable. If |
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<code>configure</code> has any issues finding this JDK, you may need to use the |
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<code>configure</code> option <code>--with-boot-jdk</code>.</p></li> |
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<li><p>Ensure that GNU make, the Bootstrap JDK, and the compilers are all in your |
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PATH environment variable.</p></li> |
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</ul> |
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<p>And for specific systems:</p> |
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<ul> |
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<li><p><strong>Linux</strong></p> |
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<p>Install all the software development packages needed including |
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<a href="#alsa">alsa</a>, <a href="#freetype">freetype</a>, <a href="#cups">cups</a>, and |
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<a href="#xrender">xrender</a>. See <a href="#SDBE">specific system packages</a>.</p></li> |
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<li><p><strong>Solaris</strong></p> |
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<p>Install all the software development packages needed including <a href="#studio">Studio |
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Compilers</a>, <a href="#freetype">freetype</a>, <a href="#cups">cups</a>, and |
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<a href="#xrender">xrender</a>. See <a href="#SDBE">specific system packages</a>.</p></li> |
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<li><p><strong>Windows</strong></p> |
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<ul> |
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<li>Install one of <a href="#cygwin">CYGWIN</a> or <a href="#msys">MinGW/MSYS</a></li> |
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<li>Install <a href="#vs2013">Visual Studio 2013</a></li> |
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</ul></li> |
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<li><p><strong>Mac OS X</strong></p> |
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<p>Install <a href="https://developer.apple.com/xcode/">XCode 6.3</a></p></li> |
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</ul> |
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<p><a name="linux"></a></p> |
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<h4>Linux</h4> |
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<p>With Linux, try and favor the system packages over building your own or getting |
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packages from other areas. Most Linux builds should be possible with the |
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system's available packages.</p> |
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<p>Note that some Linux systems have a habit of pre-populating your environment |
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variables for you, for example <code>JAVA_HOME</code> might get pre-defined for you to |
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refer to the JDK installed on your Linux system. You will need to unset |
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<code>JAVA_HOME</code>. It's a good idea to run <code>env</code> and verify the environment variables |
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you are getting from the default system settings make sense for building the |
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OpenJDK.</p> |
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<p><a name="solaris"></a></p> |
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<h4>Solaris</h4> |
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<p><a name="studio"></a></p> |
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<h5>Studio Compilers</h5> |
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<p>At a minimum, the <a href="http://www.oracle.com/ |
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technetwork/server-storage/solarisstudio/downloads/index.htm">Studio 12 Update 4 Compilers</a> (containing |
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version 5.13 of the C and C++ compilers) is required, including specific |
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patches.</p> |
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<p>The Solaris Studio installation should contain at least these packages:</p> |
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<blockquote> |
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<p><table border="1"> |
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<thead> |
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<tr> |
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<td><strong>Package</strong></td> |
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<td><strong>Version</strong></td> |
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</tr> |
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</thead> |
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<tbody> |
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<tr> |
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<td>developer/solarisstudio-124/backend</td> |
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<td>12.4-1.0.6.0</td> |
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</tr> |
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<tr> |
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<td>developer/solarisstudio-124/c++</td> |
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<td>12.4-1.0.10.0</td> |
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</tr> |
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<tr> |
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<td>developer/solarisstudio-124/cc</td> |
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<td>12.4-1.0.4.0</td> |
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</tr> |
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307 |
<tr> |
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<td>developer/solarisstudio-124/library/c++-libs</td> |
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<td>12.4-1.0.10.0</td> |
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</tr> |
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<tr> |
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<td>developer/solarisstudio-124/library/math-libs</td> |
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<td>12.4-1.0.0.1</td> |
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</tr> |
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315 |
<tr> |
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<td>developer/solarisstudio-124/library/studio-gccrt</td> |
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<td>12.4-1.0.0.1</td> |
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</tr> |
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<tr> |
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<td>developer/solarisstudio-124/studio-common</td> |
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<td>12.4-1.0.0.1</td> |
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</tr> |
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<tr> |
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<td>developer/solarisstudio-124/studio-ja</td> |
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<td>12.4-1.0.0.1</td> |
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</tr> |
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<tr> |
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<td>developer/solarisstudio-124/studio-legal</td> |
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<td>12.4-1.0.0.1</td> |
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</tr> |
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<tr> |
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<td>developer/solarisstudio-124/studio-zhCN</td> |
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<td>12.4-1.0.0.1</td> |
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</tr> |
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</tbody> |
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</table></p> |
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</blockquote> |
| 33030 | 338 |
|
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<p>In particular backend 12.4-1.0.6.0 contains a critical patch for the sparc |
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version.</p> |
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|
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<p>Place the <code>bin</code> directory in <code>PATH</code>.</p> |
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|
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<p>The Oracle Solaris Studio Express compilers at: <a href="http://www.oracle.com/technetwork/server-storage/solarisstudio/ |
345 |
downloads/index-jsp-142582.html">Oracle Solaris Studio Express |
|
346 |
Download site</a> are also an option, although these compilers |
|
347 |
have not been extensively used yet.</p> |
|
348 |
||
349 |
<p><a name="windows"></a></p> |
|
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||
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<h4>Windows</h4> |
|
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||
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<h5>Windows Unix Toolkit</h5> |
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|
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<p>Building on Windows requires a Unix-like environment, notably a Unix-like |
356 |
shell. There are several such environments available of which |
|
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<a href="http://www.cygwin.com/">Cygwin</a> and |
|
358 |
<a href="http://www.mingw.org/wiki/MSYS">MinGW/MSYS</a> are currently supported for the |
|
359 |
OpenJDK build. One of the differences of these systems from standard Windows |
|
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tools is the way they handle Windows path names, particularly path names which |
|
361 |
contain spaces, backslashes as path separators and possibly drive letters. |
|
362 |
Depending on the use case and the specifics of each environment these path |
|
363 |
problems can be solved by a combination of quoting whole paths, translating |
|
364 |
backslashes to forward slashes, escaping backslashes with additional |
|
365 |
backslashes and translating the path names to their <a href="http://en.wikipedia.org/wiki/8.3_filename">"8.3" |
|
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version</a>.</p> |
|
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||
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<p><a name="cygwin"></a></p> |
|
369 |
||
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<h6>CYGWIN</h6> |
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<p>CYGWIN is an open source, Linux-like environment which tries to emulate a |
373 |
complete POSIX layer on Windows. It tries to be smart about path names and can |
|
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usually handle all kinds of paths if they are correctly quoted or escaped |
|
375 |
although internally it maps drive letters <code><drive>:</code> to a virtual directory |
|
376 |
<code>/cygdrive/<drive></code>.</p> |
|
377 |
||
378 |
<p>You can always use the <code>cygpath</code> utility to map pathnames with spaces or the |
|
379 |
backslash character into the <code>C:/</code> style of pathname (called 'mixed'), e.g. |
|
380 |
<code>cygpath -s -m "<path>"</code>.</p> |
|
381 |
||
382 |
<p>Note that the use of CYGWIN creates a unique problem with regards to setting |
|
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<a href="#path"><code>PATH</code></a>. Normally on Windows the <code>PATH</code> variable contains directories |
|
384 |
separated with the ";" character (Solaris and Linux use ":"). With CYGWIN, it |
|
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uses ":", but that means that paths like "C:/path" cannot be placed in the |
|
386 |
CYGWIN version of <code>PATH</code> and instead CYGWIN uses something like |
|
387 |
<code>/cygdrive/c/path</code> which CYGWIN understands, but only CYGWIN understands.</p> |
|
388 |
||
389 |
<p>The OpenJDK build requires CYGWIN version 1.7.16 or newer. Information about |
|
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CYGWIN can be obtained from the CYGWIN website at |
|
391 |
<a href="http://www.cygwin.com">www.cygwin.com</a>.</p> |
|
392 |
||
393 |
<p>By default CYGWIN doesn't install all the tools required for building the |
|
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OpenJDK. Along with the default installation, you need to install the following |
|
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tools.</p> |
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<blockquote> |
398 |
<p><table border="1"> |
|
399 |
<thead> |
|
400 |
<tr> |
|
401 |
<td>Binary Name</td> |
|
402 |
<td>Category</td> |
|
403 |
<td>Package</td> |
|
404 |
<td>Description</td> |
|
405 |
</tr> |
|
406 |
</thead> |
|
407 |
<tbody> |
|
408 |
<tr> |
|
409 |
<td>ar.exe</td> |
|
410 |
<td>Devel</td> |
|
411 |
<td>binutils</td> |
|
412 |
<td>The GNU assembler, linker and binary utilities</td> |
|
413 |
</tr> |
|
414 |
<tr> |
|
415 |
<td>make.exe</td> |
|
416 |
<td>Devel</td> |
|
417 |
<td>make</td> |
|
418 |
<td>The GNU version of the 'make' utility built for CYGWIN</td> |
|
419 |
</tr> |
|
420 |
<tr> |
|
421 |
<td>m4.exe</td> |
|
422 |
<td>Interpreters</td> |
|
423 |
<td>m4</td> |
|
424 |
<td>GNU implementation of the traditional Unix macro processor</td> |
|
425 |
</tr> |
|
426 |
<tr> |
|
427 |
<td>cpio.exe</td> |
|
428 |
<td>Utils</td> |
|
429 |
<td>cpio</td> |
|
430 |
<td>A program to manage archives of files</td> |
|
431 |
</tr> |
|
432 |
<tr> |
|
433 |
<td>gawk.exe</td> |
|
434 |
<td>Utils</td> |
|
435 |
<td>awk</td> |
|
436 |
<td>Pattern-directed scanning and processing language</td> |
|
437 |
</tr> |
|
438 |
<tr> |
|
439 |
<td>file.exe</td> |
|
440 |
<td>Utils</td> |
|
441 |
<td>file</td> |
|
442 |
<td>Determines file type using 'magic' numbers</td> |
|
443 |
</tr> |
|
444 |
<tr> |
|
445 |
<td>zip.exe</td> |
|
446 |
<td>Archive</td> |
|
447 |
<td>zip</td> |
|
448 |
<td>Package and compress (archive) files</td> |
|
449 |
</tr> |
|
450 |
<tr> |
|
451 |
<td>unzip.exe</td> |
|
452 |
<td>Archive</td> |
|
453 |
<td>unzip</td> |
|
454 |
<td>Extract compressed files in a ZIP archive</td> |
|
455 |
</tr> |
|
456 |
<tr> |
|
457 |
<td>free.exe</td> |
|
458 |
<td>System</td> |
|
459 |
<td>procps</td> |
|
460 |
<td>Display amount of free and used memory in the system</td> |
|
461 |
</tr> |
|
462 |
</tbody> |
|
463 |
</table></p> |
|
464 |
</blockquote> |
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<p>Note that the CYGWIN software can conflict with other non-CYGWIN software on |
467 |
your Windows system. CYGWIN provides a <a href="http://cygwin.com/faq/ |
|
468 |
faq.using.html">FAQ</a> for known issues and problems, of particular interest is the |
|
469 |
section on <a href="http://cygwin.com/faq/faq.using.html#faq.using.bloda">BLODA (applications that interfere with |
|
470 |
CYGWIN)</a>.</p> |
|
471 |
||
472 |
<p><a name="msys"></a></p> |
|
473 |
||
474 |
<h6>MinGW/MSYS</h6> |
|
475 |
||
476 |
<p>MinGW ("Minimalist GNU for Windows") is a collection of free Windows specific
|
|
477 |
header files and import libraries combined with GNU toolsets that allow one to |
|
478 |
produce native Windows programs that do not rely on any 3rd-party C runtime |
|
479 |
DLLs. MSYS is a supplement to MinGW which allows building applications and |
|
480 |
programs which rely on traditional UNIX tools to be present. Among others this |
|
481 |
includes tools like <code>bash</code> and <code>make</code>. See <a href="http://www.mingw.org/ |
|
482 |
wiki/MSYS">MinGW/MSYS</a> for more information.</p> |
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|
| 33030 | 484 |
<p>Like Cygwin, MinGW/MSYS can handle different types of path formats. They are |
485 |
internally converted to paths with forward slashes and drive letters |
|
486 |
<code><drive>:</code> replaced by a virtual directory <code>/<drive></code>. Additionally, MSYS |
|
487 |
automatically detects binaries compiled for the MSYS environment and feeds them |
|
488 |
with the internal, Unix-style path names. If native Windows applications are |
|
489 |
called from within MSYS programs their path arguments are automatically |
|
490 |
converted back to Windows style path names with drive letters and backslashes |
|
491 |
as path separators. This may cause problems for Windows applications which use |
|
492 |
forward slashes as parameter separator (e.g. <code>cl /nologo /I</code>) because MSYS may |
|
493 |
wrongly <a href="http://mingw.org/wiki/ |
|
494 |
Posix_path_conversion">replace such parameters by drive letters</a>.</p> |
|
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495 |
|
| 33030 | 496 |
<p>In addition to the tools which will be installed by default, you have to |
497 |
manually install the <code>msys-zip</code> and <code>msys-unzip</code> packages. This can be easily |
|
498 |
done with the MinGW command line installer:</p> |
|
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|
| 33030 | 500 |
<pre><code> mingw-get.exe install msys-zip |
501 |
mingw-get.exe install msys-unzip |
|
502 |
</code></pre> |
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|
| 33030 | 504 |
<p><a name="vs2013"></a></p> |
505 |
||
506 |
<h5>Visual Studio 2013 Compilers</h5> |
|
507 |
||
508 |
<p>The 32-bit and 64-bit OpenJDK Windows build requires Microsoft Visual Studio |
|
509 |
C++ 2013 (VS2013) Professional Edition or Express compiler. The compiler and |
|
510 |
other tools are expected to reside in the location defined by the variable |
|
511 |
<code>VS120COMNTOOLS</code> which is set by the Microsoft Visual Studio installer.</p> |
|
512 |
||
513 |
<p>Only the C++ part of VS2013 is needed. Try to let the installation go to the |
|
514 |
default install directory. Always reboot your system after installing VS2013. |
|
515 |
The system environment variable VS120COMNTOOLS should be set in your |
|
516 |
environment.</p> |
|
517 |
||
518 |
<p>Make sure that TMP and TEMP are also set in the environment and refer to |
|
519 |
Windows paths that exist, like <code>C:\temp</code>, not <code>/tmp</code>, not <code>/cygdrive/c/temp</code>, |
|
520 |
and not <code>C:/temp</code>. <code>C:\temp</code> is just an example, it is assumed that this area |
|
521 |
is private to the user, so by default after installs you should see a unique |
|
522 |
user path in these variables.</p> |
|
|
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|
| 33030 | 524 |
<p><a name="macosx"></a></p> |
525 |
||
526 |
<h4>Mac OS X</h4> |
|
527 |
||
528 |
<p>Make sure you get the right XCode version.</p> |
|
529 |
||
530 |
<hr /> |
|
531 |
||
532 |
<p><a name="configure"></a></p> |
|
|
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533 |
|
| 33030 | 534 |
<h3>Configure</h3> |
535 |
||
536 |
<p>The basic invocation of the <code>configure</code> script looks like:</p> |
|
|
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|
| 33030 | 538 |
<blockquote> |
539 |
<p><strong><code>bash ./configure [options]</code></strong></p> |
|
540 |
</blockquote> |
|
541 |
||
542 |
<p>This will create an output directory containing the "configuration" and setup |
|
543 |
an area for the build result. This directory typically looks like:</p> |
|
|
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544 |
|
| 33030 | 545 |
<blockquote> |
546 |
<p><strong><code>build/linux-x64-normal-server-release</code></strong></p> |
|
547 |
</blockquote> |
|
548 |
||
549 |
<p><code>configure</code> will try to figure out what system you are running on and where all |
|
550 |
necessary build components are. If you have all prerequisites for building |
|
551 |
installed, it should find everything. If it fails to detect any component |
|
552 |
automatically, it will exit and inform you about the problem. When this |
|
553 |
happens, read more below in <a href="#configureoptions">the <code>configure</code> options</a>.</p> |
|
554 |
||
555 |
<p>Some examples:</p> |
|
556 |
||
557 |
<blockquote> |
|
558 |
<p><strong>Windows 32bit build with freetype specified:</strong> <br /> |
|
559 |
<code>bash ./configure --with-freetype=/cygdrive/c/freetype-i586 --with-target- |
|
560 |
bits=32</code></p> |
|
561 |
||
562 |
<p><strong>Debug 64bit Build:</strong> <br /> |
|
563 |
<code>bash ./configure --enable-debug --with-target-bits=64</code></p> |
|
564 |
</blockquote> |
|
565 |
||
566 |
<p><a name="configureoptions"></a></p> |
|
567 |
||
568 |
<h4>Configure Options</h4> |
|
569 |
||
570 |
<p>Complete details on all the OpenJDK <code>configure</code> options can be seen with:</p> |
|
571 |
||
572 |
<blockquote> |
|
573 |
<p><strong><code>bash ./configure --help=short</code></strong></p> |
|
574 |
</blockquote> |
|
575 |
||
576 |
<p>Use <code>-help</code> to see all the <code>configure</code> options available. You can generate any |
|
577 |
number of different configurations, e.g. debug, release, 32, 64, etc.</p> |
|
578 |
||
579 |
<p>Some of the more commonly used <code>configure</code> options are:</p> |
|
580 |
||
581 |
<blockquote> |
|
582 |
<p><strong><code>--enable-debug</code></strong> <br /> |
|
583 |
set the debug level to fastdebug (this is a shorthand for <code>--with-debug- |
|
584 |
level=fastdebug</code>)</p> |
|
585 |
</blockquote> |
|
586 |
||
587 |
<p><a name="alsa"></a></p> |
|
588 |
||
589 |
<blockquote> |
|
590 |
<p><strong><code>--with-alsa=</code></strong><em>path</em> <br /> |
|
591 |
select the location of the Advanced Linux Sound Architecture (ALSA)</p> |
|
592 |
||
593 |
<p>Version 0.9.1 or newer of the ALSA files are required for building the |
|
594 |
OpenJDK on Linux. These Linux files are usually available from an "alsa" of |
|
595 |
"libasound" development package, and it's highly recommended that you try |
|
596 |
and use the package provided by the particular version of Linux that you are |
|
597 |
using.</p> |
|
598 |
||
599 |
<p><strong><code>--with-boot-jdk=</code></strong><em>path</em> <br /> |
|
600 |
select the <a href="#bootjdk">Bootstrap JDK</a></p> |
|
601 |
||
602 |
<p><strong><code>--with-boot-jdk-jvmargs=</code></strong>"<em>args</em>" <br /> |
|
603 |
provide the JVM options to be used to run the <a href="#bootjdk">Bootstrap JDK</a></p> |
|
604 |
||
605 |
<p><strong><code>--with-cacerts=</code></strong><em>path</em> <br /> |
|
606 |
select the path to the cacerts file.</p> |
|
607 |
||
608 |
<p>See <a href="http://en.wikipedia.org/wiki/ |
|
609 |
Certificate_Authority">Certificate Authority on Wikipedia</a> for a better understanding of the Certificate |
|
610 |
Authority (CA). A certificates file named "cacerts" represents a system-wide |
|
611 |
keystore with CA certificates. In JDK and JRE binary bundles, the "cacerts" |
|
612 |
file contains root CA certificates from several public CAs (e.g., VeriSign, |
|
613 |
Thawte, and Baltimore). The source contain a cacerts file without CA root |
|
614 |
certificates. Formal JDK builders will need to secure permission from each |
|
615 |
public CA and include the certificates into their own custom cacerts file. |
|
616 |
Failure to provide a populated cacerts file will result in verification |
|
617 |
errors of a certificate chain during runtime. By default an empty cacerts |
|
618 |
file is provided and that should be fine for most JDK developers.</p> |
|
619 |
</blockquote> |
|
620 |
||
621 |
<p><a name="cups"></a></p> |
|
622 |
||
623 |
<blockquote> |
|
624 |
<p><strong><code>--with-cups=</code></strong><em>path</em> <br /> |
|
625 |
select the CUPS install location</p> |
|
626 |
||
627 |
<p>The Common UNIX Printing System (CUPS) Headers are required for building the |
|
628 |
OpenJDK on Solaris and Linux. The Solaris header files can be obtained by |
|
|
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installing the package <strong>print/cups</strong>.</p> |
|
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|
630 |
|
| 33030 | 631 |
<p>The CUPS header files can always be downloaded from |
632 |
<a href="http://www.cups.org">www.cups.org</a>.</p> |
|
633 |
||
634 |
<p><strong><code>--with-cups-include=</code></strong><em>path</em> <br /> |
|
635 |
select the CUPS include directory location</p> |
|
636 |
||
637 |
<p><strong><code>--with-debug-level=</code></strong><em>level</em> <br /> |
|
638 |
select the debug information level of release, fastdebug, or slowdebug</p> |
|
639 |
||
640 |
<p><strong><code>--with-dev-kit=</code></strong><em>path</em> <br /> |
|
641 |
select location of the compiler install or developer install location</p> |
|
642 |
</blockquote> |
|
643 |
||
644 |
<p><a name="freetype"></a></p> |
|
645 |
||
646 |
<blockquote> |
|
647 |
<p><strong><code>--with-freetype=</code></strong><em>path</em> <br /> |
|
648 |
select the freetype files to use.</p> |
|
|
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|
649 |
|
| 33030 | 650 |
<p>Expecting the freetype libraries under <code>lib/</code> and the headers under |
651 |
<code>include/</code>.</p> |
|
652 |
||
653 |
<p>Version 2.3 or newer of FreeType is required. On Unix systems required files |
|
654 |
can be available as part of your distribution (while you still may need to |
|
655 |
upgrade them). Note that you need development version of package that |
|
656 |
includes both the FreeType library and header files.</p> |
|
657 |
||
658 |
<p>You can always download latest FreeType version from the <a href="http://www.freetype.org">FreeType |
|
659 |
website</a>. Building the freetype 2 libraries from |
|
660 |
scratch is also possible, however on Windows refer to the <a href="http://freetype.freedesktop.org/wiki/FreeType_DLL">Windows FreeType |
|
661 |
DLL build instructions</a>.</p> |
|
662 |
||
663 |
<p>Note that by default FreeType is built with byte code hinting support |
|
664 |
disabled due to licensing restrictions. In this case, text appearance and |
|
665 |
metrics are expected to differ from Sun's official JDK build. See the |
|
666 |
<a href="http://freetype.sourceforge.net/freetype2">SourceForge FreeType2 Home Page</a> |
|
667 |
for more information.</p> |
|
668 |
||
669 |
<p><strong><code>--with-import-hotspot=</code></strong><em>path</em> <br /> |
|
670 |
select the location to find hotspot binaries from a previous build to avoid |
|
671 |
building hotspot</p> |
|
|
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|
672 |
|
| 33030 | 673 |
<p><strong><code>--with-target-bits=</code></strong><em>arg</em> <br /> |
674 |
select 32 or 64 bit build</p> |
|
675 |
||
676 |
<p><strong><code>--with-jvm-variants=</code></strong><em>variants</em> <br /> |
|
677 |
select the JVM variants to build from, comma separated list that can |
|
678 |
include: server, client, kernel, zero and zeroshark</p> |
|
679 |
||
680 |
<p><strong><code>--with-memory-size=</code></strong><em>size</em> <br /> |
|
681 |
select the RAM size that GNU make will think this system has</p> |
|
|
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|
682 |
|
| 33030 | 683 |
<p><strong><code>--with-msvcr-dll=</code></strong><em>path</em> <br /> |
684 |
select the <code>msvcr100.dll</code> file to include in the Windows builds (C/C++ |
|
685 |
runtime library for Visual Studio).</p> |
|
|
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|
686 |
|
| 33030 | 687 |
<p>This is usually picked up automatically from the redist directories of |
688 |
Visual Studio 2013.</p> |
|
|
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|
689 |
|
| 33030 | 690 |
<p><strong><code>--with-num-cores=</code></strong><em>cores</em> <br /> |
691 |
select the number of cores to use (processor count or CPU count)</p> |
|
692 |
</blockquote> |
|
|
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|
693 |
|
| 33030 | 694 |
<p><a name="xrender"></a></p> |
|
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|
695 |
|
| 33030 | 696 |
<blockquote> |
697 |
<p><strong><code>--with-x=</code></strong><em>path</em> <br /> |
|
698 |
select the location of the X11 and xrender files.</p> |
|
|
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|
699 |
|
| 33030 | 700 |
<p>The XRender Extension Headers are required for building the OpenJDK on |
701 |
Solaris and Linux. The Linux header files are usually available from a |
|
702 |
"Xrender" development package, it's recommended that you try and use the |
|
703 |
package provided by the particular distribution of Linux that you are using. |
|
704 |
The Solaris XRender header files is included with the other X11 header files |
|
705 |
in the package <strong>SFWxwinc</strong> on new enough versions of Solaris and will be |
|
706 |
installed in <code>/usr/X11/include/X11/extensions/Xrender.h</code> or |
|
707 |
<code>/usr/openwin/share/include/X11/extensions/Xrender.h</code></p> |
|
708 |
</blockquote> |
|
| 19525 | 709 |
|
| 33030 | 710 |
<hr /> |
711 |
||
712 |
<p><a name="make"></a></p> |
|
713 |
||
714 |
<h3>Make</h3> |
|
715 |
||
716 |
<p>The basic invocation of the <code>make</code> utility looks like:</p> |
|
|
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|
717 |
|
| 33030 | 718 |
<blockquote> |
719 |
<p><strong><code>make all</code></strong></p> |
|
720 |
</blockquote> |
|
721 |
||
722 |
<p>This will start the build to the output directory containing the |
|
723 |
"configuration" that was created by the <code>configure</code> script. Run <code>make help</code> for |
|
724 |
more information on the available targets.</p> |
|
725 |
||
726 |
<p>There are some of the make targets that are of general interest:</p> |
|
727 |
||
728 |
<blockquote> |
|
729 |
<p><em>empty</em> <br /> |
|
730 |
build everything but no images</p> |
|
731 |
||
732 |
<p><strong><code>all</code></strong> <br /> |
|
733 |
build everything including images</p> |
|
|
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|
734 |
|
| 33030 | 735 |
<p><strong><code>all-conf</code></strong> <br /> |
736 |
build all configurations</p> |
|
737 |
||
738 |
<p><strong><code>images</code></strong> <br /> |
|
739 |
create complete j2sdk and j2re images</p> |
|
740 |
||
741 |
<p><strong><code>install</code></strong> <br /> |
|
742 |
install the generated images locally, typically in <code>/usr/local</code></p> |
|
|
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|
743 |
|
| 33030 | 744 |
<p><strong><code>clean</code></strong> <br /> |
745 |
remove all files generated by make, but not those generated by <code>configure</code></p> |
|
746 |
||
747 |
<p><strong><code>dist-clean</code></strong> <br /> |
|
748 |
remove all files generated by both and <code>configure</code> (basically killing the |
|
749 |
configuration)</p> |
|
750 |
||
751 |
<p><strong><code>help</code></strong> <br /> |
|
752 |
give some help on using <code>make</code>, including some interesting make targets</p> |
|
753 |
</blockquote> |
|
754 |
||
755 |
<hr /> |
|
|
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|
756 |
|
| 33030 | 757 |
<p><a name="testing"></a></p> |
758 |
||
759 |
<h2>Testing</h2> |
|
|
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|
760 |
|
| 33030 | 761 |
<p>When the build is completed, you should see the generated binaries and |
762 |
associated files in the <code>j2sdk-image</code> directory in the output directory. In |
|
763 |
particular, the <code>build/*/images/j2sdk-image/bin</code> directory should contain |
|
764 |
executables for the OpenJDK tools and utilities for that configuration. The |
|
765 |
testing tool <code>jtreg</code> will be needed and can be found at: <a href="http://openjdk.java.net/jtreg/">the jtreg |
|
766 |
site</a>. The provided regression tests in the |
|
767 |
repositories can be run with the command:</p> |
|
768 |
||
769 |
<blockquote> |
|
770 |
<p><strong><code>cd test && make PRODUCT_HOME=`pwd`/../build/*/images/j2sdk-image all</code></strong></p> |
|
771 |
</blockquote> |
|
772 |
||
773 |
<hr /> |
|
|
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|
774 |
|
| 33030 | 775 |
<p><a name="hints"></a></p> |
776 |
||
777 |
<h2>Appendix A: Hints and Tips</h2> |
|
778 |
||
779 |
<p><a name="faq"></a></p> |
|
780 |
||
781 |
<h3>FAQ</h3> |
|
|
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|
782 |
|
| 33030 | 783 |
<p><strong>Q:</strong> The <code>generated-configure.sh</code> file looks horrible! How are you going to |
784 |
edit it? <br /> |
|
785 |
<strong>A:</strong> The <code>generated-configure.sh</code> file is generated (think "compiled") by the |
|
786 |
autoconf tools. The source code is in <code>configure.ac</code> and various .m4 files in |
|
787 |
common/autoconf, which are much more readable.</p> |
|
|
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|
788 |
|
| 33030 | 789 |
<p><strong>Q:</strong> Why is the <code>generated-configure.sh</code> file checked in, if it is |
790 |
generated? <br /> |
|
791 |
<strong>A:</strong> If it was not generated, every user would need to have the autoconf |
|
792 |
tools installed, and re-generate the <code>configure</code> file as the first step. Our |
|
793 |
goal is to minimize the work needed to be done by the user to start building |
|
794 |
OpenJDK, and to minimize the number of external dependencies required.</p> |
|
|
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|
795 |
|
| 33030 | 796 |
<p><strong>Q:</strong> Do you require a specific version of autoconf for regenerating |
797 |
<code>generated-configure.sh</code>? <br /> |
|
798 |
<strong>A:</strong> Yes, version 2.69 is required and should be easy enough to aquire on all |
|
799 |
supported operating systems. The reason for this is to avoid large spurious |
|
800 |
changes in <code>generated-configure.sh</code>.</p> |
|
801 |
||
802 |
<p><strong>Q:</strong> How do you regenerate <code>generated-configure.sh</code> after making changes to |
|
803 |
the input files? <br /> |
|
804 |
<strong>A:</strong> Regnerating <code>generated-configure.sh</code> should always be done using the |
|
805 |
script <code>common/autoconf/autogen.sh</code> to ensure that the correct files get |
|
806 |
updated. This script should also be run after mercurial tries to merge |
|
807 |
<code>generated-configure.sh</code> as a merge of the generated file is not guaranteed to |
|
808 |
be correct.</p> |
|
|
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|
809 |
|
| 33030 | 810 |
<p><strong>Q:</strong> What are the files in <code>common/makefiles/support/*</code> for? They look like |
811 |
gibberish. <br /> |
|
812 |
<strong>A:</strong> They are a somewhat ugly hack to compensate for command line length |
|
813 |
limitations on certain platforms (Windows, Solaris). Due to a combination of |
|
814 |
limitations in make and the shell, command lines containing too many files will |
|
815 |
not work properly. These helper files are part of an elaborate hack that will |
|
816 |
compress the command line in the makefile and then uncompress it safely. We're |
|
817 |
not proud of it, but it does fix the problem. If you have any better |
|
818 |
suggestions, we're all ears! :-)</p> |
|
|
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|
819 |
|
| 33030 | 820 |
<p><strong>Q:</strong> I want to see the output of the commands that make runs, like in the old |
821 |
build. How do I do that? <br /> |
|
822 |
<strong>A:</strong> You specify the <code>LOG</code> variable to make. There are several log levels:</p> |
|
|
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|
823 |
|
| 33030 | 824 |
<ul> |
825 |
<li><strong><code>warn</code></strong> -- Default and very quiet.</li> |
|
826 |
<li><strong><code>info</code></strong> -- Shows more progress information than warn.</li> |
|
827 |
<li><strong><code>debug</code></strong> -- Echos all command lines and prints all macro calls for |
|
828 |
compilation definitions.</li> |
|
829 |
<li><strong><code>trace</code></strong> -- Echos all $(shell) command lines as well.</li> |
|
830 |
</ul> |
|
|
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|
831 |
|
| 33030 | 832 |
<p><strong>Q:</strong> When do I have to re-run <code>configure</code>? <br /> |
833 |
<strong>A:</strong> Normally you will run <code>configure</code> only once for creating a |
|
834 |
configuration. You need to re-run configuration only if you want to change any |
|
835 |
configuration options, or if you pull down changes to the <code>configure</code> script.</p> |
|
|
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|
836 |
|
| 33030 | 837 |
<p><strong>Q:</strong> I have added a new source file. Do I need to modify the makefiles? <br /> |
838 |
<strong>A:</strong> Normally, no. If you want to create e.g. a new native library, you will |
|
839 |
need to modify the makefiles. But for normal file additions or removals, no |
|
840 |
changes are needed. There are certan exceptions for some native libraries where |
|
841 |
the source files are spread over many directories which also contain sources |
|
842 |
for other libraries. In these cases it was simply easier to create include |
|
843 |
lists rather than excludes.</p> |
|
|
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|
844 |
|
| 33030 | 845 |
<p><strong>Q:</strong> When I run <code>configure --help</code>, I see many strange options, like |
846 |
<code>--dvidir</code>. What is this? <br /> |
|
847 |
<strong>A:</strong> Configure provides a slew of options by default, to all projects that |
|
848 |
use autoconf. Most of them are not used in OpenJDK, so you can safely ignore |
|
849 |
them. To list only OpenJDK specific features, use <code>configure --help=short</code> |
|
850 |
instead.</p> |
|
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|
851 |
|
| 33030 | 852 |
<p><strong>Q:</strong> <code>configure</code> provides OpenJDK-specific features such as <code>--with- |
853 |
builddeps-server</code> that are not described in this document. What about those? <br /> |
|
854 |
<strong>A:</strong> Try them out if you like! But be aware that most of these are |
|
855 |
experimental features. Many of them don't do anything at all at the moment; the |
|
856 |
option is just a placeholder. Others depend on pieces of code or infrastructure |
|
857 |
that is currently not ready for prime time.</p> |
|
|
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|
858 |
|
| 33030 | 859 |
<p><strong>Q:</strong> How will you make sure you don't break anything? <br /> |
860 |
<strong>A:</strong> We have a script that compares the result of the new build system with |
|
861 |
the result of the old. For most part, we aim for (and achieve) byte-by-byte |
|
862 |
identical output. There are however technical issues with e.g. native binaries, |
|
863 |
which might differ in a byte-by-byte comparison, even when building twice with |
|
864 |
the old build system. For these, we compare relevant aspects (e.g. the symbol |
|
865 |
table and file size). Note that we still don't have 100% equivalence, but we're |
|
866 |
close.</p> |
|
|
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|
867 |
|
| 33030 | 868 |
<p><strong>Q:</strong> I noticed this thing X in the build that looks very broken by design. |
869 |
Why don't you fix it? <br /> |
|
870 |
<strong>A:</strong> Our goal is to produce a build output that is as close as technically |
|
871 |
possible to the old build output. If things were weird in the old build, they |
|
872 |
will be weird in the new build. Often, things were weird before due to |
|
873 |
obscurity, but in the new build system the weird stuff comes up to the surface. |
|
874 |
The plan is to attack these things at a later stage, after the new build system |
|
875 |
is established.</p> |
|
|
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|
876 |
|
| 33030 | 877 |
<p><strong>Q:</strong> The code in the new build system is not that well-structured. Will you |
878 |
fix this? <br /> |
|
879 |
<strong>A:</strong> Yes! The new build system has grown bit by bit as we converted the old |
|
880 |
system. When all of the old build system is converted, we can take a step back |
|
881 |
and clean up the structure of the new build system. Some of this we plan to do |
|
882 |
before replacing the old build system and some will need to wait until after.</p> |
|
|
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|
883 |
|
| 33030 | 884 |
<p><strong>Q:</strong> Is anything able to use the results of the new build's default make |
885 |
target? <br /> |
|
886 |
<strong>A:</strong> Yes, this is the minimal (or roughly minimal) set of compiled output |
|
887 |
needed for a developer to actually execute the newly built JDK. The idea is |
|
888 |
that in an incremental development fashion, when doing a normal make, you |
|
889 |
should only spend time recompiling what's changed (making it purely |
|
890 |
incremental) and only do the work that's needed to actually run and test your |
|
891 |
code. The packaging stuff that is part of the <code>images</code> target is not needed for |
|
892 |
a normal developer who wants to test his new code. Even if it's quite fast, |
|
893 |
it's still unnecessary. We're targeting sub-second incremental rebuilds! ;-) |
|
894 |
(Or, well, at least single-digit seconds...)</p> |
|
895 |
||
896 |
<p><strong>Q:</strong> I usually set a specific environment variable when building, but I can't |
|
897 |
find the equivalent in the new build. What should I do? <br /> |
|
898 |
<strong>A:</strong> It might very well be that we have neglected to add support for an |
|
899 |
option that was actually used from outside the build system. Email us and we |
|
900 |
will add support for it!</p> |
|
901 |
||
902 |
<p><a name="performance"></a></p> |
|
903 |
||
904 |
<h3>Build Performance Tips</h3> |
|
905 |
||
906 |
<p>Building OpenJDK requires a lot of horsepower. Some of the build tools can be |
|
907 |
adjusted to utilize more or less of resources such as parallel threads and |
|
908 |
memory. The <code>configure</code> script analyzes your system and selects reasonable |
|
909 |
values for such options based on your hardware. If you encounter resource |
|
910 |
problems, such as out of memory conditions, you can modify the detected values |
|
911 |
with:</p> |
|
912 |
||
913 |
<ul> |
|
914 |
<li><strong><code>--with-num-cores</code></strong> -- number of cores in the build system, e.g. |
|
915 |
<code>--with-num-cores=8</code></li> |
|
916 |
<li><strong><code>--with-memory-size</code></strong> -- memory (in MB) available in the build system, |
|
917 |
e.g. <code>--with-memory-size=1024</code></li> |
|
918 |
</ul> |
|
919 |
||
920 |
<p>It might also be necessary to specify the JVM arguments passed to the Bootstrap |
|
921 |
JDK, using e.g. <code>--with-boot-jdk-jvmargs="-Xmx8G -enableassertions"</code>. Doing |
|
922 |
this will override the default JVM arguments passed to the Bootstrap JDK.</p> |
|
923 |
||
924 |
<p>One of the top goals of the new build system is to improve the build |
|
925 |
performance and decrease the time needed to build. This will soon also apply to |
|
926 |
the java compilation when the Smart Javac wrapper is fully supported.</p> |
|
|
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|
927 |
|
| 33030 | 928 |
<p>At the end of a successful execution of <code>configure</code>, you will get a performance |
929 |
summary, indicating how well the build will perform. Here you will also get |
|
930 |
performance hints. If you want to build fast, pay attention to those!</p> |
|
931 |
||
932 |
<h4>Building with ccache</h4> |
|
933 |
||
934 |
<p>The OpenJDK build supports building with ccache when using gcc or clang. Using |
|
935 |
ccache can radically speed up compilation of native code if you often rebuild |
|
936 |
the same sources. Your milage may vary however so we recommend evaluating it |
|
937 |
for yourself. To enable it, make sure it's on the path and configure with |
|
938 |
<code>--enable-ccache</code>.</p> |
|
939 |
||
940 |
<h4>Building on local disk</h4> |
|
941 |
||
942 |
<p>If you are using network shares, e.g. via NFS, for your source code, make sure |
|
943 |
the build directory is situated on local disk. The performance penalty is |
|
944 |
extremely high for building on a network share, close to unusable.</p> |
|
945 |
||
946 |
<h4>Building only one JVM</h4> |
|
947 |
||
948 |
<p>The old build builds multiple JVMs on 32-bit systems (client and server; and on |
|
949 |
Windows kernel as well). In the new build we have changed this default to only |
|
950 |
build server when it's available. This improves build times for those not |
|
951 |
interested in multiple JVMs. To mimic the old behavior on platforms that |
|
952 |
support it, use <code>--with-jvm-variants=client,server</code>.</p> |
|
953 |
||
954 |
<h4>Selecting the number of cores to build on</h4> |
|
955 |
||
956 |
<p>By default, <code>configure</code> will analyze your machine and run the make process in |
|
957 |
parallel with as many threads as you have cores. This behavior can be |
|
958 |
overridden, either "permanently" (on a <code>configure</code> basis) using |
|
959 |
<code>--with-num-cores=N</code> or for a single build only (on a make basis), using |
|
960 |
<code>make JOBS=N</code>.</p> |
|
961 |
||
962 |
<p>If you want to make a slower build just this time, to save some CPU power for |
|
963 |
other processes, you can run e.g. <code>make JOBS=2</code>. This will force the makefiles |
|
964 |
to only run 2 parallel processes, or even <code>make JOBS=1</code> which will disable |
|
965 |
parallelism.</p> |
|
966 |
||
967 |
<p>If you want to have it the other way round, namely having slow builds default |
|
968 |
and override with fast if you're impatient, you should call <code>configure</code> with |
|
969 |
<code>--with-num-cores=2</code>, making 2 the default. If you want to run with more cores, |
|
970 |
run <code>make JOBS=8</code></p> |
|
|
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|
971 |
|
| 33030 | 972 |
<p><a name="troubleshooting"></a></p> |
973 |
||
974 |
<h3>Troubleshooting</h3> |
|
975 |
||
976 |
<h4>Solving build problems</h4> |
|
977 |
||
978 |
<p>If the build fails (and it's not due to a compilation error in a source file |
|
979 |
you've changed), the first thing you should do is to re-run the build with more |
|
980 |
verbosity. Do this by adding <code>LOG=debug</code> to your make command line.</p> |
|
981 |
||
982 |
<p>The build log (with both stdout and stderr intermingled, basically the same as |
|
983 |
you see on your console) can be found as <code>build.log</code> in your build directory.</p> |
|
984 |
||
985 |
<p>You can ask for help on build problems with the new build system on either the |
|
986 |
<a href="http://mail.openjdk.java.net/mailman/listinfo/build-dev">build-dev</a> or the |
|
987 |
<a href="http://mail.openjdk.java.net/mailman/listinfo/build-infra-dev">build-infra-dev</a> |
|
988 |
mailing lists. Please include the relevant parts of the build log.</p> |
|
989 |
||
990 |
<p>A build can fail for any number of reasons. Most failures are a result of |
|
991 |
trying to build in an environment in which all the pre-build requirements have |
|
992 |
not been met. The first step in troubleshooting a build failure is to recheck |
|
993 |
that you have satisfied all the pre-build requirements for your platform. |
|
994 |
Scanning the <code>configure</code> log is a good first step, making sure that what it |
|
995 |
found makes sense for your system. Look for strange error messages or any |
|
996 |
difficulties that <code>configure</code> had in finding things.</p> |
|
997 |
||
998 |
<p>Some of the more common problems with builds are briefly described below, with |
|
999 |
suggestions for remedies.</p> |
|
1000 |
||
1001 |
<ul> |
|
1002 |
<li><p><strong>Corrupted Bundles on Windows:</strong> <br /> |
|
1003 |
Some virus scanning software has been known to corrupt the downloading of |
|
1004 |
zip bundles. It may be necessary to disable the 'on access' or 'real time' |
|
1005 |
virus scanning features to prevent this corruption. This type of 'real time' |
|
1006 |
virus scanning can also slow down the build process significantly. |
|
1007 |
Temporarily disabling the feature, or excluding the build output directory |
|
1008 |
may be necessary to get correct and faster builds.</p></li> |
|
1009 |
<li><p><strong>Slow Builds:</strong> <br /> |
|
1010 |
If your build machine seems to be overloaded from too many simultaneous C++ |
|
1011 |
compiles, try setting the <code>JOBS=1</code> on the <code>make</code> command line. Then try |
|
1012 |
increasing the count slowly to an acceptable level for your system. Also:</p> |
|
1013 |
||
1014 |
<p>Creating the javadocs can be very slow, if you are running javadoc, consider |
|
1015 |
skipping that step.</p> |
|
|
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|
1016 |
|
| 33030 | 1017 |
<p>Faster CPUs, more RAM, and a faster DISK usually helps. The VM build tends |
1018 |
to be CPU intensive (many C++ compiles), and the rest of the JDK will often |
|
1019 |
be disk intensive.</p> |
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|
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|
1020 |
|
| 33030 | 1021 |
<p>Faster compiles are possible using a tool called |
1022 |
<a href="http://ccache.samba.org/">ccache</a>.</p></li> |
|
1023 |
<li><p><strong>File time issues:</strong> <br /> |
|
1024 |
If you see warnings that refer to file time stamps, e.g.</p> |
|
|
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|
1025 |
|
| 33030 | 1026 |
<blockquote> |
1027 |
<p><em>Warning message:</em> <code>File 'xxx' has modification time in the future.</code> <br /> |
|
1028 |
<em>Warning message:</em> <code>Clock skew detected. Your build may be incomplete.</code></p> |
|
1029 |
</blockquote> |
|
1030 |
||
1031 |
<p>These warnings can occur when the clock on the build machine is out of sync |
|
1032 |
with the timestamps on the source files. Other errors, apparently unrelated |
|
1033 |
but in fact caused by the clock skew, can occur along with the clock skew |
|
1034 |
warnings. These secondary errors may tend to obscure the fact that the true |
|
1035 |
root cause of the problem is an out-of-sync clock.</p> |
|
|
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|
1036 |
|
| 33030 | 1037 |
<p>If you see these warnings, reset the clock on the build machine, run |
1038 |
"<code>gmake clobber</code>" or delete the directory containing the build output, and |
|
1039 |
restart the build from the beginning.</p></li> |
|
1040 |
<li><p><strong>Error message: <code>Trouble writing out table to disk</code></strong> <br /> |
|
1041 |
Increase the amount of swap space on your build machine. This could be |
|
1042 |
caused by overloading the system and it may be necessary to use:</p> |
|
1043 |
||
1044 |
<blockquote> |
|
1045 |
<p><code>make JOBS=1</code></p> |
|
1046 |
</blockquote> |
|
|
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|
1047 |
|
| 33030 | 1048 |
<p>to reduce the load on the system.</p></li> |
1049 |
<li><p><strong>Error Message: <code>libstdc++ not found</code>:</strong> <br /> |
|
1050 |
This is caused by a missing libstdc++.a library. This is installed as part |
|
1051 |
of a specific package (e.g. libstdc++.so.devel.386). By default some 64-bit |
|
1052 |
Linux versions (e.g. Fedora) only install the 64-bit version of the |
|
1053 |
libstdc++ package. Various parts of the JDK build require a static link of |
|
1054 |
the C++ runtime libraries to allow for maximum portability of the built |
|
1055 |
images.</p></li> |
|
1056 |
<li><p><strong>Linux Error Message: <code>cannot restore segment prot after reloc</code></strong> <br /> |
|
1057 |
This is probably an issue with SELinux (See <a href="http://en.wikipedia.org/wiki/SELinux">SELinux on |
|
1058 |
Wikipedia</a>). Parts of the VM is built |
|
1059 |
without the <code>-fPIC</code> for performance reasons.</p> |
|
|
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|
1060 |
|
| 33030 | 1061 |
<p>To completely disable SELinux:</p> |
|
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|
1062 |
|
| 33030 | 1063 |
<ol> |
1064 |
<li><code>$ su root</code></li> |
|
1065 |
<li><code># system-config-securitylevel</code></li> |
|
1066 |
<li><code>In the window that appears, select the SELinux tab</code></li> |
|
1067 |
<li><code>Disable SELinux</code></li> |
|
1068 |
</ol> |
|
1069 |
||
1070 |
<p>Alternatively, instead of completely disabling it you could disable just |
|
1071 |
this one check.</p> |
|
1072 |
||
1073 |
<ol> |
|
1074 |
<li>Select System->Administration->SELinux Management</li> |
|
1075 |
<li>In the SELinux Management Tool which appears, select "Boolean" from the |
|
1076 |
menu on the left</li> |
|
1077 |
<li>Expand the "Memory Protection" group</li> |
|
1078 |
<li>Check the first item, labeled "Allow all unconfined executables to use |
|
1079 |
libraries requiring text relocation ..."</li> |
|
1080 |
</ol></li> |
|
1081 |
<li><p><strong>Windows Error Messages:</strong> <br /> |
|
1082 |
<code>*** fatal error - couldn't allocate heap, ...</code> <br /> |
|
1083 |
<code>rm fails with "Directory not empty"</code> <br /> |
|
1084 |
<code>unzip fails with "cannot create ... Permission denied"</code> <br /> |
|
1085 |
<code>unzip fails with "cannot create ... Error 50"</code></p> |
|
|
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|
1086 |
|
| 33030 | 1087 |
<p>The CYGWIN software can conflict with other non-CYGWIN software. See the |
1088 |
CYGWIN FAQ section on <a href="http://cygwin.com/faq/faq.using.html#faq.using.bloda">BLODA (applications that interfere with |
|
1089 |
CYGWIN)</a>.</p></li> |
|
1090 |
<li><p><strong>Windows Error Message: <code>spawn failed</code></strong> <br /> |
|
1091 |
Try rebooting the system, or there could be some kind of issue with the disk |
|
1092 |
or disk partition being used. Sometimes it comes with a "Permission Denied" |
|
1093 |
message.</p></li> |
|
1094 |
</ul> |
|
1095 |
||
1096 |
<hr /> |
|
1097 |
||
1098 |
<p><a name="gmake"></a></p> |
|
1099 |
||
1100 |
<h2>Appendix B: GNU make</h2> |
|
|
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|
1101 |
|
| 33030 | 1102 |
<p>The Makefiles in the OpenJDK are only valid when used with the GNU version of |
1103 |
the utility command <code>make</code> (usually called <code>gmake</code> on Solaris). A few notes |
|
1104 |
about using GNU make:</p> |
|
|
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|
1105 |
|
| 33030 | 1106 |
<ul> |
1107 |
<li>You need GNU make version 3.81 or newer. On Windows 4.0 or newer is |
|
1108 |
recommended. If the GNU make utility on your systems is not of a suitable |
|
1109 |
version, see "<a href="#buildgmake">Building GNU make</a>".</li> |
|
1110 |
<li>Place the location of the GNU make binary in the <code>PATH</code>.</li> |
|
1111 |
<li><strong>Solaris:</strong> Do NOT use <code>/usr/bin/make</code> on Solaris. If your Solaris system |
|
1112 |
has the software from the Solaris Developer Companion CD installed, you |
|
|
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|
1113 |
should try and use <code>/usr/bin/gmake</code> or <code>/usr/gnu/bin/make</code>.</li> |
| 33030 | 1114 |
<li><strong>Windows:</strong> Make sure you start your build inside a bash shell.</li> |
1115 |
<li><strong>Mac OS X:</strong> The XCode "command line tools" must be installed on your Mac.</li> |
|
1116 |
</ul> |
|
1117 |
||
1118 |
<p>Information on GNU make, and access to ftp download sites, are available on the |
|
1119 |
<a href="http://www.gnu.org/software/make/make.html">GNU make web site </a>. The latest |
|
1120 |
source to GNU make is available at |
|
1121 |
<a href="http://ftp.gnu.org/pub/gnu/make/">ftp.gnu.org/pub/gnu/make/</a>.</p> |
|
|
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|
1122 |
|
| 33030 | 1123 |
<p><a name="buildgmake"></a></p> |
1124 |
||
1125 |
<h3>Building GNU make</h3> |
|
1126 |
||
1127 |
<p>First step is to get the GNU make 3.81 or newer source from |
|
1128 |
<a href="http://ftp.gnu.org/pub/gnu/make/">ftp.gnu.org/pub/gnu/make/</a>. Building is a |
|
1129 |
little different depending on the OS but is basically done with:</p> |
|
1130 |
||
1131 |
<pre><code> bash ./configure |
|
1132 |
make |
|
1133 |
</code></pre> |
|
1134 |
||
1135 |
<hr /> |
|
|
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|
1136 |
|
| 33030 | 1137 |
<p><a name="buildenvironments"></a></p> |
1138 |
||
1139 |
<h2>Appendix C: Build Environments</h2> |
|
1140 |
||
1141 |
<h3>Minimum Build Environments</h3> |
|
1142 |
||
1143 |
<p>This file often describes specific requirements for what we call the "minimum |
|
1144 |
build environments" (MBE) for this specific release of the JDK. What is listed |
|
1145 |
below is what the Oracle Release Engineering Team will use to build the Oracle |
|
1146 |
JDK product. Building with the MBE will hopefully generate the most compatible |
|
1147 |
bits that install on, and run correctly on, the most variations of the same |
|
1148 |
base OS and hardware architecture. In some cases, these represent what is often |
|
1149 |
called the least common denominator, but each Operating System has different |
|
1150 |
aspects to it.</p> |
|
|
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|
1151 |
|
| 33030 | 1152 |
<p>In all cases, the Bootstrap JDK version minimum is critical, we cannot |
1153 |
guarantee builds will work with older Bootstrap JDK's. Also in all cases, more |
|
1154 |
RAM and more processors is better, the minimums listed below are simply |
|
1155 |
recommendations.</p> |
|
|
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|
1156 |
|
| 33030 | 1157 |
<p>With Solaris and Mac OS X, the version listed below is the oldest release we |
1158 |
can guarantee builds and works, and the specific version of the compilers used |
|
1159 |
could be critical.</p> |
|
1160 |
||
1161 |
<p>With Windows the critical aspect is the Visual Studio compiler used, which due |
|
1162 |
to it's runtime, generally dictates what Windows systems can do the builds and |
|
1163 |
where the resulting bits can be used.</p> |
|
1164 |
||
1165 |
<p><strong>NOTE: We expect a change here off these older Windows OS releases and to a |
|
1166 |
'less older' one, probably Windows 2008R2 X64.</strong></p> |
|
|
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|
1167 |
|
| 33030 | 1168 |
<p>With Linux, it was just a matter of picking a stable distribution that is a |
1169 |
good representative for Linux in general.</p> |
|
1170 |
||
1171 |
<p>It is understood that most developers will NOT be using these specific |
|
1172 |
versions, and in fact creating these specific versions may be difficult due to |
|
1173 |
the age of some of this software. It is expected that developers are more often |
|
1174 |
using the more recent releases and distributions of these operating systems.</p> |
|
|
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|
1175 |
|
| 33030 | 1176 |
<p>Compilation problems with newer or different C/C++ compilers is a common |
1177 |
problem. Similarly, compilation problems related to changes to the |
|
1178 |
<code>/usr/include</code> or system header files is also a common problem with older, |
|
1179 |
newer, or unreleased OS versions. Please report these types of problems as bugs |
|
1180 |
so that they can be dealt with accordingly.</p> |
|
|
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|
|
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|
1182 |
<blockquote> |
| 33030 | 1183 |
<p><table border="1"> |
1184 |
<thead> |
|
1185 |
<tr> |
|
1186 |
<th>Base OS and Architecture</th> |
|
1187 |
<th>OS</th> |
|
1188 |
<th>C/C++ Compiler</th> |
|
1189 |
<th>Bootstrap JDK</th> |
|
1190 |
<th>Processors</th> |
|
1191 |
<th>RAM Minimum</th> |
|
1192 |
<th>DISK Needs</th> |
|
1193 |
</tr> |
|
1194 |
</thead> |
|
1195 |
<tbody> |
|
1196 |
<tr> |
|
1197 |
<td>Linux X86 (32-bit) and X64 (64-bit)</td> |
|
1198 |
<td>Oracle Enterprise Linux 6.4</td> |
|
|
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|
1199 |
<td>gcc 4.9.2 </td> |
| 33030 | 1200 |
<td>JDK 8</td> |
1201 |
<td>2 or more</td> |
|
1202 |
<td>1 GB</td> |
|
1203 |
<td>6 GB</td> |
|
1204 |
</tr> |
|
1205 |
<tr> |
|
1206 |
<td>Solaris SPARCV9 (64-bit)</td> |
|
|
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|
1207 |
<td>Solaris 11 Update 1</td> |
|
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|
1208 |
<td>Studio 12 Update 4 + patches</td> |
| 33030 | 1209 |
<td>JDK 8</td> |
1210 |
<td>4 or more</td> |
|
1211 |
<td>4 GB</td> |
|
1212 |
<td>8 GB</td> |
|
1213 |
</tr> |
|
1214 |
<tr> |
|
1215 |
<td>Solaris X64 (64-bit)</td> |
|
|
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|
1216 |
<td>Solaris 11 Update 1</td> |
|
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|
1217 |
<td>Studio 12 Update 4 + patches</td> |
| 33030 | 1218 |
<td>JDK 8</td> |
1219 |
<td>4 or more</td> |
|
1220 |
<td>4 GB</td> |
|
1221 |
<td>8 GB</td> |
|
1222 |
</tr> |
|
1223 |
<tr> |
|
1224 |
<td>Windows X86 (32-bit)</td> |
|
1225 |
<td>Windows Server 2012 R2 x64</td> |
|
1226 |
<td>Microsoft Visual Studio C++ 2013 Professional Edition</td> |
|
1227 |
<td>JDK 8</td> |
|
1228 |
<td>2 or more</td> |
|
1229 |
<td>2 GB</td> |
|
1230 |
<td>6 GB</td> |
|
1231 |
</tr> |
|
1232 |
<tr> |
|
1233 |
<td>Windows X64 (64-bit)</td> |
|
1234 |
<td>Windows Server 2012 R2 x64</td> |
|
1235 |
<td>Microsoft Visual Studio C++ 2013 Professional Edition</td> |
|
1236 |
<td>JDK 8</td> |
|
1237 |
<td>2 or more</td> |
|
1238 |
<td>2 GB</td> |
|
1239 |
<td>6 GB</td> |
|
1240 |
</tr> |
|
1241 |
<tr> |
|
1242 |
<td>Mac OS X X64 (64-bit)</td> |
|
1243 |
<td>Mac OS X 10.9 "Mavericks"</td> |
|
|
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1244 |
<td>Xcode 6.3 or newer</td> |
| 33030 | 1245 |
<td>JDK 8</td> |
1246 |
<td>2 or more</td> |
|
1247 |
<td>4 GB</td> |
|
1248 |
<td>6 GB</td> |
|
1249 |
</tr> |
|
1250 |
</tbody> |
|
1251 |
</table></p> |
|
1252 |
</blockquote> |
|
1253 |
||
1254 |
<hr /> |
|
1255 |
||
1256 |
<p><a name="SDBE"></a></p> |
|
1257 |
||
1258 |
<h3>Specific Developer Build Environments</h3> |
|
1259 |
||
1260 |
<p>We won't be listing all the possible environments, but we will try to provide |
|
1261 |
what information we have available to us.</p> |
|
1262 |
||
1263 |
<p><strong>NOTE: The community can help out by updating this part of the document.</strong></p> |
|
1264 |
||
1265 |
<h4>Fedora</h4> |
|
1266 |
||
1267 |
<p>After installing the latest <a href="http://fedoraproject.org">Fedora</a> you need to |
|
1268 |
install several build dependencies. The simplest way to do it is to execute the |
|
1269 |
following commands as user <code>root</code>:</p> |
|
1270 |
||
1271 |
<pre><code> yum-builddep java-1.7.0-openjdk |
|
1272 |
yum install gcc gcc-c++ |
|
1273 |
</code></pre> |
|
1274 |
||
1275 |
<p>In addition, it's necessary to set a few environment variables for the build:</p> |
|
1276 |
||
1277 |
<pre><code> export LANG=C |
|
1278 |
export PATH="/usr/lib/jvm/java-openjdk/bin:${PATH}"
|
|
1279 |
</code></pre> |
|
1280 |
||
1281 |
<h4>CentOS 5.5</h4> |
|
1282 |
||
1283 |
<p>After installing <a href="http://www.centos.org/">CentOS 5.5</a> you need to make sure you |
|
1284 |
have the following Development bundles installed:</p> |
|
1285 |
||
1286 |
<ul> |
|
1287 |
<li>Development Libraries</li> |
|
1288 |
<li>Development Tools</li> |
|
1289 |
<li>Java Development</li> |
|
1290 |
<li>X Software Development (Including XFree86-devel)</li> |
|
1291 |
</ul> |
|
1292 |
||
1293 |
<p>Plus the following packages:</p> |
|
|
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1294 |
|
| 33030 | 1295 |
<ul> |
1296 |
<li>cups devel: Cups Development Package</li> |
|
1297 |
<li>alsa devel: Alsa Development Package</li> |
|
1298 |
<li>Xi devel: libXi.so Development Package</li> |
|
1299 |
</ul> |
|
1300 |
||
1301 |
<p>The freetype 2.3 packages don't seem to be available, but the freetype 2.3 |
|
1302 |
sources can be downloaded, built, and installed easily enough from <a href="http://downloads.sourceforge.net/freetype">the |
|
1303 |
freetype site</a>. Build and install |
|
1304 |
with something like:</p> |
|
1305 |
||
1306 |
<pre><code> bash ./configure |
|
1307 |
make |
|
1308 |
sudo -u root make install |
|
1309 |
</code></pre> |
|
1310 |
||
1311 |
<p>Mercurial packages could not be found easily, but a Google search should find |
|
1312 |
ones, and they usually include Python if it's needed.</p> |
|
1313 |
||
1314 |
<h4>Debian 5.0 (Lenny)</h4> |
|
1315 |
||
1316 |
<p>After installing <a href="http://debian.org">Debian</a> 5 you need to install several |
|
1317 |
build dependencies. The simplest way to install the build dependencies is to |
|
1318 |
execute the following commands as user <code>root</code>:</p> |
|
1319 |
||
1320 |
<pre><code> aptitude build-dep openjdk-7 |
|
1321 |
aptitude install openjdk-7-jdk libmotif-dev |
|
1322 |
</code></pre> |
|
1323 |
||
1324 |
<p>In addition, it's necessary to set a few environment variables for the build:</p> |
|
1325 |
||
1326 |
<pre><code> export LANG=C |
|
1327 |
export PATH="/usr/lib/jvm/java-7-openjdk/bin:${PATH}"
|
|
1328 |
</code></pre> |
|
1329 |
||
1330 |
<h4>Ubuntu 12.04</h4> |
|
1331 |
||
1332 |
<p>After installing <a href="http://ubuntu.org">Ubuntu</a> 12.04 you need to install several |
|
1333 |
build dependencies. The simplest way to do it is to execute the following |
|
1334 |
commands:</p> |
|
1335 |
||
1336 |
<pre><code> sudo aptitude build-dep openjdk-7 |
|
1337 |
sudo aptitude install openjdk-7-jdk |
|
1338 |
</code></pre> |
|
1339 |
||
1340 |
<p>In addition, it's necessary to set a few environment variables for the build:</p> |
|
1341 |
||
1342 |
<pre><code> export LANG=C |
|
1343 |
export PATH="/usr/lib/jvm/java-7-openjdk/bin:${PATH}"
|
|
1344 |
</code></pre> |
|
1345 |
||
1346 |
<h4>OpenSUSE 11.1</h4> |
|
|
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1347 |
|
| 33030 | 1348 |
<p>After installing <a href="http://opensuse.org">OpenSUSE</a> 11.1 you need to install |
1349 |
several build dependencies. The simplest way to install the build dependencies |
|
1350 |
is to execute the following commands:</p> |
|
1351 |
||
1352 |
<pre><code> sudo zypper source-install -d java-1_7_0-openjdk |
|
1353 |
sudo zypper install make |
|
1354 |
</code></pre> |
|
1355 |
||
1356 |
<p>In addition, it is necessary to set a few environment variables for the build:</p> |
|
1357 |
||
1358 |
<pre><code> export LANG=C |
|
1359 |
export PATH="/usr/lib/jvm/java-1.7.0-openjdk/bin:$[PATH}" |
|
1360 |
</code></pre> |
|
1361 |
||
1362 |
<p>Finally, you need to unset the <code>JAVA_HOME</code> environment variable:</p> |
|
1363 |
||
1364 |
<pre><code> export -n JAVA_HOME` |
|
1365 |
</code></pre> |
|
1366 |
||
1367 |
<h4>Mandriva Linux One 2009 Spring</h4> |
|
1368 |
||
1369 |
<p>After installing <a href="http://mandriva.org">Mandriva</a> Linux One 2009 Spring you need |
|
1370 |
to install several build dependencies. The simplest way to install the build |
|
1371 |
dependencies is to execute the following commands as user <code>root</code>:</p> |
|
1372 |
||
1373 |
<pre><code> urpmi java-1.7.0-openjdk-devel make gcc gcc-c++ freetype-devel zip unzip |
|
1374 |
libcups2-devel libxrender1-devel libalsa2-devel libstc++-static-devel |
|
1375 |
libxtst6-devel libxi-devel |
|
1376 |
</code></pre> |
|
|
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|
1377 |
|
| 33030 | 1378 |
<p>In addition, it is necessary to set a few environment variables for the build:</p> |
1379 |
||
1380 |
<pre><code> export LANG=C |
|
1381 |
export PATH="/usr/lib/jvm/java-1.7.0-openjdk/bin:${PATH}"
|
|
1382 |
</code></pre> |
|
1383 |
||
1384 |
<h4>OpenSolaris 2009.06</h4> |
|
1385 |
||
1386 |
<p>After installing <a href="http://opensolaris.org">OpenSolaris</a> 2009.06 you need to |
|
1387 |
install several build dependencies. The simplest way to install the build |
|
1388 |
dependencies is to execute the following commands:</p> |
|
|
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|
1389 |
|
| 33030 | 1390 |
<pre><code> pfexec pkg install SUNWgmake SUNWj7dev sunstudioexpress SUNWcups SUNWzip |
1391 |
SUNWunzip SUNWxwhl SUNWxorg-headers SUNWaudh SUNWfreetype2 |
|
1392 |
</code></pre> |
|
1393 |
||
1394 |
<p>In addition, it is necessary to set a few environment variables for the build:</p> |
|
|
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|
1395 |
|
| 33030 | 1396 |
<pre><code> export LANG=C |
1397 |
export PATH="/opt/SunStudioExpress/bin:${PATH}"
|
|
1398 |
</code></pre> |
|
1399 |
||
1400 |
<hr /> |
|
1401 |
||
1402 |
<p>End of the OpenJDK build README document.</p> |
|
1403 |
||
1404 |
<p>Please come again!</p> |
|
1405 |
</body> |
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|
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</html> |