<html> <head> <title>OpenJDK Build README</title> </head> <body><p><img src="http://openjdk.java.net/images/openjdk.png" alt="OpenJDK" title="" /></p><h1>OpenJDK Build README</h1><hr /><p><a name="introduction"></a></p><h2>Introduction</h2><p>This README file contains build instructions for the<a href="http://openjdk.java.net">OpenJDK</a>. Building the source code for the OpenJDKrequires a certain degree of technical expertise.</p><h3>!!!!!!!!!!!!!!! THIS IS A MAJOR RE-WRITE of this document. !!!!!!!!!!!!!</h3><p>Some Headlines:</p><ul><li>The build is now a "<code>configure && make</code>" style build</li><li>Any GNU make 3.81 or newer should work, except on Windows where 4.0 or neweris recommended.</li><li>The build should scale, i.e. more processors should cause the build to bedone in less wall-clock time</li><li>Nested or recursive make invocations have been significantly reduced,as has the total fork/exec or spawning of sub processes during the build</li><li>Windows MKS usage is no longer supported</li><li>Windows Visual Studio <code>vsvars*.bat</code> and <code>vcvars*.bat</code> files are runautomatically</li><li>Ant is no longer used when building the OpenJDK</li><li>Use of ALT_* environment variables for configuring the build is no longersupported</li></ul><hr /><h2>Contents</h2><ul><li><a href="#introduction">Introduction</a></li><li><a href="#hg">Use of Mercurial</a><ul><li><a href="#get_source">Getting the Source</a></li><li><a href="#repositories">Repositories</a></li></ul></li><li><a href="#building">Building</a><ul><li><a href="#setup">System Setup</a><ul><li><a href="#linux">Linux</a></li><li><a href="#solaris">Solaris</a></li><li><a href="#macosx">Mac OS X</a></li><li><a href="#windows">Windows</a></li></ul></li><li><a href="#configure">Configure</a></li><li><a href="#make">Make</a></li></ul></li><li><a href="#testing">Testing</a></li></ul><hr /><ul><li><a href="#hints">Appendix A: Hints and Tips</a><ul><li><a href="#faq">FAQ</a></li><li><a href="#performance">Build Performance Tips</a></li><li><a href="#troubleshooting">Troubleshooting</a></li></ul></li><li><a href="#gmake">Appendix B: GNU Make Information</a></li><li><a href="#buildenvironments">Appendix C: Build Environments</a></li></ul><hr /><p><a name="hg"></a></p><h2>Use of Mercurial</h2><p>The OpenJDK sources are maintained with the revision control system<a href="http://mercurial.selenic.com/wiki/Mercurial">Mercurial</a>. If you are new toMercurial, please see the <a href="http://mercurial.selenic.com/wiki/BeginnersGuides">Beginner Guides</a> or refer to the <a href="http://hgbook.red-bean.com/">Mercurial Book</a>.The first few chapters of the book provide an excellent overview of Mercurial,what it is and how it works.</p><p>For using Mercurial with the OpenJDK refer to the <a href="http://openjdk.java.net/guide/repositories.html#installConfig">Developer Guide: Installingand Configuring Mercurial</a> section for more information.</p><p><a name="get_source"></a></p><h3>Getting the Source</h3><p>To get the entire set of OpenJDK Mercurial repositories use the script<code>get_source.sh</code> located in the root repository:</p><pre><code> hg clone http://hg.openjdk.java.net/jdk9/jdk9 YourOpenJDK cd YourOpenJDK bash ./get_source.sh</code></pre><p>Once you have all the repositories, keep in mind that each repository is itsown independent repository. You can also re-run <code>./get_source.sh</code> anytime topull over all the latest changesets in all the repositories. This set ofnested repositories has been given the term "forest" and there are variousways to apply the same <code>hg</code> command to each of the repositories. Forexample, the script <code>make/scripts/hgforest.sh</code> can be used to repeat thesame <code>hg</code> command on every repository, e.g.</p><pre><code> cd YourOpenJDK bash ./make/scripts/hgforest.sh status</code></pre><p><a name="repositories"></a></p><h3>Repositories</h3><p>The set of repositories and what they contain:</p><ul><li><strong>. (root)</strong> contains common configure and makefile logic</li><li><strong>hotspot</strong> contains source code and make files for building the OpenJDKHotspot Virtual Machine</li><li><strong>langtools</strong> contains source code for the OpenJDK javac and language tools</li><li><strong>jdk</strong> contains source code and make files for building the OpenJDK runtimelibraries and misc files</li><li><strong>jaxp</strong> contains source code for the OpenJDK JAXP functionality</li><li><strong>jaxws</strong> contains source code for the OpenJDK JAX-WS functionality</li><li><strong>corba</strong> contains source code for the OpenJDK Corba functionality</li><li><strong>nashorn</strong> contains source code for the OpenJDK JavaScript implementation</li></ul><h3>Repository Source Guidelines</h3><p>There are some very basic guidelines:</p><ul><li>Use of whitespace in source files (.java, .c, .h, .cpp, and .hpp files) isrestricted. No TABs, no trailing whitespace on lines, and files should notterminate in more than one blank line.</li><li>Files with execute permissions should not be added to the sourcerepositories.</li><li>All generated files need to be kept isolated from the files maintained ormanaged by the source control system. The standard area for generated filesis the top level <code>build/</code> directory.</li><li>The default build process should be to build the product and nothing else,in one form, e.g. a product (optimized), debug (non-optimized, -g plusassert logic), or fastdebug (optimized, -g plus assert logic).</li><li>The <code>.hgignore</code> file in each repository must exist and should include<code>^build/</code>, <code>^dist/</code> and optionally any <code>nbproject/private</code> directories. <strong>Itshould NEVER</strong> include anything in the <code>src/</code> or <code>test/</code> or any manageddirectory area of a repository.</li><li>Directory names and file names should never contain blanks or non-printingcharacters.</li><li>Generated source or binary files should NEVER be added to the repository(that includes <code>javah</code> output). There are some exceptions to this rule, inparticular with some of the generated configure scripts.</li><li>Files not needed for typical building or testing of the repository shouldnot be added to the repository.</li></ul><hr /><p><a name="building"></a></p><h2>Building</h2><p>The very first step in building the OpenJDK is making sure the system itselfhas everything it needs to do OpenJDK builds. Once a system is setup, itgenerally doesn't need to be done again.</p><p>Building the OpenJDK is now done with running a <code>configure</code> script which willtry and find and verify you have everything you need, followed by running<code>make</code>, e.g.</p><blockquote> <p><strong><code>bash ./configure</code></strong> <br /> <strong><code>make all</code></strong></p></blockquote><p>Where possible the <code>configure</code> script will attempt to located the variouscomponents in the default locations or via component specific variablesettings. When the normal defaults fail or components cannot be found,additional <code>configure</code> options may be necessary to help <code>configure</code> find thenecessary tools for the build, or you may need to re-visit the setup of yoursystem due to missing software packages.</p><p><strong>NOTE:</strong> The <code>configure</code> script file does not have execute permissions andwill need to be explicitly run with <code>bash</code>, see the source guidelines.</p><hr /><p><a name="setup"></a></p><h3>System Setup</h3><p>Before even attempting to use a system to build the OpenJDK there are some verybasic system setups needed. For all systems:</p><ul><li><p>Be sure the GNU make utility is version 3.81 (4.0 on windows) or newer, e.g.run "<code>make -version</code>"</p><p><a name="bootjdk"></a></p></li><li><p>Install a Bootstrap JDK. All OpenJDK builds require access to a previouslyreleased JDK called the <em>bootstrap JDK</em> or <em>boot JDK.</em> The general rule isthat the bootstrap JDK must be an instance of the previous major release ofthe JDK. In addition, there may be a requirement to use a release at orbeyond a particular update level.</p><p><strong><em>Building JDK 9 requires JDK 8. JDK 9 developers should not use JDK 9 asthe boot JDK, to ensure that JDK 9 dependencies are not introduced into theparts of the system that are built with JDK 8.</em></strong></p><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 downloadsite</a>.For build performance reasons it is very important that this bootstrap JDKbe made available on the local disk of the machine doing the build. Youshould add its <code>bin</code> directory to the <code>PATH</code> environment variable. If<code>configure</code> has any issues finding this JDK, you may need to use the<code>configure</code> option <code>--with-boot-jdk</code>.</p></li><li><p>Ensure that GNU make, the Bootstrap JDK, and the compilers are all in yourPATH environment variable.</p></li></ul><p>And for specific systems:</p><ul><li><p><strong>Linux</strong></p><p>Install all the software development packages needed including<a href="#alsa">alsa</a>, <a href="#freetype">freetype</a>, <a href="#cups">cups</a>, and<a href="#xrender">xrender</a>. See <a href="#SDBE">specific system packages</a>.</p></li><li><p><strong>Solaris</strong></p><p>Install all the software development packages needed including <a href="#studio">StudioCompilers</a>, <a href="#freetype">freetype</a>, <a href="#cups">cups</a>, and<a href="#xrender">xrender</a>. See <a href="#SDBE">specific system packages</a>.</p></li><li><p><strong>Windows</strong></p><ul><li>Install one of <a href="#cygwin">CYGWIN</a> or <a href="#msys">MinGW/MSYS</a></li><li>Install <a href="#vs2013">Visual Studio 2013</a></li></ul></li><li><p><strong>Mac OS X</strong></p><p>Install <a href="https://developer.apple.com/xcode/">XCode 6.3</a></p></li></ul><p><a name="linux"></a></p><h4>Linux</h4><p>With Linux, try and favor the system packages over building your own or gettingpackages from other areas. Most Linux builds should be possible with thesystem's available packages.</p><p>Note that some Linux systems have a habit of pre-populating your environmentvariables for you, for example <code>JAVA_HOME</code> might get pre-defined for you torefer to the JDK installed on your Linux system. You will need to unset<code>JAVA_HOME</code>. It's a good idea to run <code>env</code> and verify the environment variablesyou are getting from the default system settings make sense for building theOpenJDK.</p><p><a name="solaris"></a></p><h4>Solaris</h4><p><a name="studio"></a></p><h5>Studio Compilers</h5><p>At a minimum, the <a href="http://www.oracle.com/technetwork/server-storage/solarisstudio/downloads/index.htm">Studio 12 Update 4 Compilers</a> (containingversion 5.13 of the C and C++ compilers) is required, including specificpatches.</p><p>The Solaris Studio installation should contain at least these packages:</p><blockquote> <p><table border="1"> <thead> <tr> <td><strong>Package</strong></td> <td><strong>Version</strong></td> </tr> </thead> <tbody> <tr> <td>developer/solarisstudio-124/backend</td> <td>12.4-1.0.6.0</td> </tr> <tr> <td>developer/solarisstudio-124/c++</td> <td>12.4-1.0.10.0</td> </tr> <tr> <td>developer/solarisstudio-124/cc</td> <td>12.4-1.0.4.0</td> </tr> <tr> <td>developer/solarisstudio-124/library/c++-libs</td> <td>12.4-1.0.10.0</td> </tr> <tr> <td>developer/solarisstudio-124/library/math-libs</td> <td>12.4-1.0.0.1</td> </tr> <tr> <td>developer/solarisstudio-124/library/studio-gccrt</td> <td>12.4-1.0.0.1</td> </tr> <tr> <td>developer/solarisstudio-124/studio-common</td> <td>12.4-1.0.0.1</td> </tr> <tr> <td>developer/solarisstudio-124/studio-ja</td> <td>12.4-1.0.0.1</td> </tr> <tr> <td>developer/solarisstudio-124/studio-legal</td> <td>12.4-1.0.0.1</td> </tr> <tr> <td>developer/solarisstudio-124/studio-zhCN</td> <td>12.4-1.0.0.1</td> </tr> </tbody> </table></p></blockquote><p>In particular backend 12.4-1.0.6.0 contains a critical patch for the sparcversion.</p><p>Place the <code>bin</code> directory in <code>PATH</code>.</p><p>The Oracle Solaris Studio Express compilers at: <a href="http://www.oracle.com/technetwork/server-storage/solarisstudio/downloads/index-jsp-142582.html">Oracle Solaris Studio ExpressDownload site</a> are also an option, although these compilershave not been extensively used yet.</p><p><a name="windows"></a></p><h4>Windows</h4><h5>Windows Unix Toolkit</h5><p>Building on Windows requires a Unix-like environment, notably a Unix-likeshell. There are several such environments available of which<a href="http://www.cygwin.com/">Cygwin</a> and<a href="http://www.mingw.org/wiki/MSYS">MinGW/MSYS</a> are currently supported for theOpenJDK build. One of the differences of these systems from standard Windowstools is the way they handle Windows path names, particularly path names whichcontain spaces, backslashes as path separators and possibly drive letters.Depending on the use case and the specifics of each environment these pathproblems can be solved by a combination of quoting whole paths, translatingbackslashes to forward slashes, escaping backslashes with additionalbackslashes and translating the path names to their <a href="http://en.wikipedia.org/wiki/8.3_filename">"8.3"version</a>.</p><p><a name="cygwin"></a></p><h6>CYGWIN</h6><p>CYGWIN is an open source, Linux-like environment which tries to emulate acomplete POSIX layer on Windows. It tries to be smart about path names and canusually handle all kinds of paths if they are correctly quoted or escapedalthough internally it maps drive letters <code><drive>:</code> to a virtual directory<code>/cygdrive/<drive></code>.</p><p>You can always use the <code>cygpath</code> utility to map pathnames with spaces or thebackslash character into the <code>C:/</code> style of pathname (called 'mixed'), e.g.<code>cygpath -s -m "<path>"</code>.</p><p>Note that the use of CYGWIN creates a unique problem with regards to setting<a href="#path"><code>PATH</code></a>. Normally on Windows the <code>PATH</code> variable contains directoriesseparated with the ";" character (Solaris and Linux use ":"). With CYGWIN, ituses ":", but that means that paths like "C:/path" cannot be placed in theCYGWIN version of <code>PATH</code> and instead CYGWIN uses something like<code>/cygdrive/c/path</code> which CYGWIN understands, but only CYGWIN understands.</p><p>The OpenJDK build requires CYGWIN version 1.7.16 or newer. Information aboutCYGWIN can be obtained from the CYGWIN website at<a href="http://www.cygwin.com">www.cygwin.com</a>.</p><p>By default CYGWIN doesn't install all the tools required for building theOpenJDK. Along with the default installation, you need to install the followingtools.</p><blockquote> <p><table border="1"> <thead> <tr> <td>Binary Name</td> <td>Category</td> <td>Package</td> <td>Description</td> </tr> </thead> <tbody> <tr> <td>ar.exe</td> <td>Devel</td> <td>binutils</td> <td>The GNU assembler, linker and binary utilities</td> </tr> <tr> <td>make.exe</td> <td>Devel</td> <td>make</td> <td>The GNU version of the 'make' utility built for CYGWIN</td> </tr> <tr> <td>m4.exe</td> <td>Interpreters</td> <td>m4</td> <td>GNU implementation of the traditional Unix macro processor</td> </tr> <tr> <td>cpio.exe</td> <td>Utils</td> <td>cpio</td> <td>A program to manage archives of files</td> </tr> <tr> <td>gawk.exe</td> <td>Utils</td> <td>awk</td> <td>Pattern-directed scanning and processing language</td> </tr> <tr> <td>file.exe</td> <td>Utils</td> <td>file</td> <td>Determines file type using 'magic' numbers</td> </tr> <tr> <td>zip.exe</td> <td>Archive</td> <td>zip</td> <td>Package and compress (archive) files</td> </tr> <tr> <td>unzip.exe</td> <td>Archive</td> <td>unzip</td> <td>Extract compressed files in a ZIP archive</td> </tr> <tr> <td>free.exe</td> <td>System</td> <td>procps</td> <td>Display amount of free and used memory in the system</td> </tr> </tbody> </table></p></blockquote><p>Note that the CYGWIN software can conflict with other non-CYGWIN software onyour Windows system. CYGWIN provides a <a href="http://cygwin.com/faq/faq.using.html">FAQ</a> for known issues and problems, of particular interest is thesection on <a href="http://cygwin.com/faq/faq.using.html#faq.using.bloda">BLODA (applications that interfere withCYGWIN)</a>.</p><p><a name="msys"></a></p><h6>MinGW/MSYS</h6><p>MinGW ("Minimalist GNU for Windows") is a collection of free Windows specificheader files and import libraries combined with GNU toolsets that allow one toproduce native Windows programs that do not rely on any 3rd-party C runtimeDLLs. MSYS is a supplement to MinGW which allows building applications andprograms which rely on traditional UNIX tools to be present. Among others thisincludes tools like <code>bash</code> and <code>make</code>. See <a href="http://www.mingw.org/wiki/MSYS">MinGW/MSYS</a> for more information.</p><p>Like Cygwin, MinGW/MSYS can handle different types of path formats. They areinternally converted to paths with forward slashes and drive letters<code><drive>:</code> replaced by a virtual directory <code>/<drive></code>. Additionally, MSYSautomatically detects binaries compiled for the MSYS environment and feeds themwith the internal, Unix-style path names. If native Windows applications arecalled from within MSYS programs their path arguments are automaticallyconverted back to Windows style path names with drive letters and backslashesas path separators. This may cause problems for Windows applications which useforward slashes as parameter separator (e.g. <code>cl /nologo /I</code>) because MSYS maywrongly <a href="http://mingw.org/wiki/Posix_path_conversion">replace such parameters by drive letters</a>.</p><p>In addition to the tools which will be installed by default, you have tomanually install the <code>msys-zip</code> and <code>msys-unzip</code> packages. This can be easilydone with the MinGW command line installer:</p><pre><code> mingw-get.exe install msys-zip mingw-get.exe install msys-unzip</code></pre><p><a name="vs2013"></a></p><h5>Visual Studio 2013 Compilers</h5><p>The 32-bit and 64-bit OpenJDK Windows build requires Microsoft Visual StudioC++ 2013 (VS2013) Professional Edition or Express compiler. The compiler andother tools are expected to reside in the location defined by the variable<code>VS120COMNTOOLS</code> which is set by the Microsoft Visual Studio installer.</p><p>Only the C++ part of VS2013 is needed. Try to let the installation go to thedefault install directory. Always reboot your system after installing VS2013.The system environment variable VS120COMNTOOLS should be set in yourenvironment.</p><p>Make sure that TMP and TEMP are also set in the environment and refer toWindows paths that exist, like <code>C:\temp</code>, not <code>/tmp</code>, not <code>/cygdrive/c/temp</code>,and not <code>C:/temp</code>. <code>C:\temp</code> is just an example, it is assumed that this areais private to the user, so by default after installs you should see a uniqueuser path in these variables.</p><p><a name="macosx"></a></p><h4>Mac OS X</h4><p>Make sure you get the right XCode version.</p><hr /><p><a name="configure"></a></p><h3>Configure</h3><p>The basic invocation of the <code>configure</code> script looks like:</p><blockquote> <p><strong><code>bash ./configure [options]</code></strong></p></blockquote><p>This will create an output directory containing the "configuration" and setupan area for the build result. This directory typically looks like:</p><blockquote> <p><strong><code>build/linux-x64-normal-server-release</code></strong></p></blockquote><p><code>configure</code> will try to figure out what system you are running on and where allnecessary build components are. If you have all prerequisites for buildinginstalled, it should find everything. If it fails to detect any componentautomatically, it will exit and inform you about the problem. When thishappens, read more below in <a href="#configureoptions">the <code>configure</code> options</a>.</p><p>Some examples:</p><blockquote> <p><strong>Windows 32bit build with freetype specified:</strong> <br /> <code>bash ./configure --with-freetype=/cygdrive/c/freetype-i586 --with-target-bits=32</code></p><p><strong>Debug 64bit Build:</strong> <br /> <code>bash ./configure --enable-debug --with-target-bits=64</code></p></blockquote><p><a name="configureoptions"></a></p><h4>Configure Options</h4><p>Complete details on all the OpenJDK <code>configure</code> options can be seen with:</p><blockquote> <p><strong><code>bash ./configure --help=short</code></strong></p></blockquote><p>Use <code>-help</code> to see all the <code>configure</code> options available. You can generate anynumber of different configurations, e.g. debug, release, 32, 64, etc.</p><p>Some of the more commonly used <code>configure</code> options are:</p><blockquote> <p><strong><code>--enable-debug</code></strong> <br /> set the debug level to fastdebug (this is a shorthand for <code>--with-debug- level=fastdebug</code>)</p></blockquote><p><a name="alsa"></a></p><blockquote> <p><strong><code>--with-alsa=</code></strong><em>path</em> <br /> select the location of the Advanced Linux Sound Architecture (ALSA)</p><p>Version 0.9.1 or newer of the ALSA files are required for building the OpenJDK on Linux. These Linux files are usually available from an "alsa" of "libasound" development package, and it's highly recommended that you try and use the package provided by the particular version of Linux that you are using.</p><p><strong><code>--with-boot-jdk=</code></strong><em>path</em> <br /> select the <a href="#bootjdk">Bootstrap JDK</a></p><p><strong><code>--with-boot-jdk-jvmargs=</code></strong>"<em>args</em>" <br /> provide the JVM options to be used to run the <a href="#bootjdk">Bootstrap JDK</a></p><p><strong><code>--with-cacerts=</code></strong><em>path</em> <br /> select the path to the cacerts file.</p><p>See <a href="http://en.wikipedia.org/wiki/ Certificate_Authority">Certificate Authority on Wikipedia</a> for a better understanding of the Certificate Authority (CA). A certificates file named "cacerts" represents a system-wide keystore with CA certificates. In JDK and JRE binary bundles, the "cacerts" file contains root CA certificates from several public CAs (e.g., VeriSign, Thawte, and Baltimore). The source contain a cacerts file without CA root certificates. Formal JDK builders will need to secure permission from each public CA and include the certificates into their own custom cacerts file. Failure to provide a populated cacerts file will result in verification errors of a certificate chain during runtime. By default an empty cacerts file is provided and that should be fine for most JDK developers.</p></blockquote><p><a name="cups"></a></p><blockquote> <p><strong><code>--with-cups=</code></strong><em>path</em> <br /> select the CUPS install location</p><p>The Common UNIX Printing System (CUPS) Headers are required for building the OpenJDK on Solaris and Linux. The Solaris header files can be obtained by installing the package <strong>SFWcups</strong> from the Solaris Software Companion CD/DVD, these often will be installed into the directory <code>/opt/sfw/cups</code>.</p><p>The CUPS header files can always be downloaded from <a href="http://www.cups.org">www.cups.org</a>.</p><p><strong><code>--with-cups-include=</code></strong><em>path</em> <br /> select the CUPS include directory location</p><p><strong><code>--with-debug-level=</code></strong><em>level</em> <br /> select the debug information level of release, fastdebug, or slowdebug</p><p><strong><code>--with-dev-kit=</code></strong><em>path</em> <br /> select location of the compiler install or developer install location</p></blockquote><p><a name="freetype"></a></p><blockquote> <p><strong><code>--with-freetype=</code></strong><em>path</em> <br /> select the freetype files to use.</p><p>Expecting the freetype libraries under <code>lib/</code> and the headers under <code>include/</code>.</p><p>Version 2.3 or newer of FreeType is required. On Unix systems required files can be available as part of your distribution (while you still may need to upgrade them). Note that you need development version of package that includes both the FreeType library and header files.</p><p>You can always download latest FreeType version from the <a href="http://www.freetype.org">FreeType website</a>. Building the freetype 2 libraries from scratch is also possible, however on Windows refer to the <a href="http://freetype.freedesktop.org/wiki/FreeType_DLL">Windows FreeType DLL build instructions</a>.</p><p>Note that by default FreeType is built with byte code hinting support disabled due to licensing restrictions. In this case, text appearance and metrics are expected to differ from Sun's official JDK build. See the <a href="http://freetype.sourceforge.net/freetype2">SourceForge FreeType2 Home Page</a> for more information.</p><p><strong><code>--with-import-hotspot=</code></strong><em>path</em> <br /> select the location to find hotspot binaries from a previous build to avoid building hotspot</p><p><strong><code>--with-target-bits=</code></strong><em>arg</em> <br /> select 32 or 64 bit build</p><p><strong><code>--with-jvm-variants=</code></strong><em>variants</em> <br /> select the JVM variants to build from, comma separated list that can include: server, client, kernel, zero and zeroshark</p><p><strong><code>--with-memory-size=</code></strong><em>size</em> <br /> select the RAM size that GNU make will think this system has</p><p><strong><code>--with-msvcr-dll=</code></strong><em>path</em> <br /> select the <code>msvcr100.dll</code> file to include in the Windows builds (C/C++ runtime library for Visual Studio).</p><p>This is usually picked up automatically from the redist directories of Visual Studio 2013.</p><p><strong><code>--with-num-cores=</code></strong><em>cores</em> <br /> select the number of cores to use (processor count or CPU count)</p></blockquote><p><a name="xrender"></a></p><blockquote> <p><strong><code>--with-x=</code></strong><em>path</em> <br /> select the location of the X11 and xrender files.</p><p>The XRender Extension Headers are required for building the OpenJDK on Solaris and Linux. The Linux header files are usually available from a "Xrender" development package, it's recommended that you try and use the package provided by the particular distribution of Linux that you are using. The Solaris XRender header files is included with the other X11 header files in the package <strong>SFWxwinc</strong> on new enough versions of Solaris and will be installed in <code>/usr/X11/include/X11/extensions/Xrender.h</code> or <code>/usr/openwin/share/include/X11/extensions/Xrender.h</code></p></blockquote><hr /><p><a name="make"></a></p><h3>Make</h3><p>The basic invocation of the <code>make</code> utility looks like:</p><blockquote> <p><strong><code>make all</code></strong></p></blockquote><p>This will start the build to the output directory containing the"configuration" that was created by the <code>configure</code> script. Run <code>make help</code> formore information on the available targets.</p><p>There are some of the make targets that are of general interest:</p><blockquote> <p><em>empty</em> <br /> build everything but no images</p><p><strong><code>all</code></strong> <br /> build everything including images</p><p><strong><code>all-conf</code></strong> <br /> build all configurations</p><p><strong><code>images</code></strong> <br /> create complete j2sdk and j2re images</p><p><strong><code>install</code></strong> <br /> install the generated images locally, typically in <code>/usr/local</code></p><p><strong><code>clean</code></strong> <br /> remove all files generated by make, but not those generated by <code>configure</code></p><p><strong><code>dist-clean</code></strong> <br /> remove all files generated by both and <code>configure</code> (basically killing the configuration)</p><p><strong><code>help</code></strong> <br /> give some help on using <code>make</code>, including some interesting make targets</p></blockquote><hr /><p><a name="testing"></a></p><h2>Testing</h2><p>When the build is completed, you should see the generated binaries andassociated files in the <code>j2sdk-image</code> directory in the output directory. Inparticular, the <code>build/*/images/j2sdk-image/bin</code> directory should containexecutables for the OpenJDK tools and utilities for that configuration. Thetesting tool <code>jtreg</code> will be needed and can be found at: <a href="http://openjdk.java.net/jtreg/">the jtregsite</a>. The provided regression tests in therepositories can be run with the command:</p><blockquote> <p><strong><code>cd test && make PRODUCT_HOME=`pwd`/../build/*/images/j2sdk-image all</code></strong></p></blockquote><hr /><p><a name="hints"></a></p><h2>Appendix A: Hints and Tips</h2><p><a name="faq"></a></p><h3>FAQ</h3><p><strong>Q:</strong> The <code>generated-configure.sh</code> file looks horrible! How are you going toedit it? <br /><strong>A:</strong> The <code>generated-configure.sh</code> file is generated (think "compiled") by theautoconf tools. The source code is in <code>configure.ac</code> and various .m4 files incommon/autoconf, which are much more readable.</p><p><strong>Q:</strong> Why is the <code>generated-configure.sh</code> file checked in, if it is generated? <br /><strong>A:</strong> If it was not generated, every user would need to have the autoconftools installed, and re-generate the <code>configure</code> file as the first step. Ourgoal is to minimize the work needed to be done by the user to start buildingOpenJDK, and to minimize the number of external dependencies required.</p><p><strong>Q:</strong> Do you require a specific version of autoconf for regenerating<code>generated-configure.sh</code>? <br /><strong>A:</strong> Yes, version 2.69 is required and should be easy enough to aquire on allsupported operating systems. The reason for this is to avoid large spuriouschanges in <code>generated-configure.sh</code>.</p><p><strong>Q:</strong> How do you regenerate <code>generated-configure.sh</code> after making changes tothe input files? <br /><strong>A:</strong> Regnerating <code>generated-configure.sh</code> should always be done using thescript <code>common/autoconf/autogen.sh</code> to ensure that the correct files getupdated. This script should also be run after mercurial tries to merge<code>generated-configure.sh</code> as a merge of the generated file is not guaranteed tobe correct.</p><p><strong>Q:</strong> What are the files in <code>common/makefiles/support/*</code> for? They look likegibberish. <br /><strong>A:</strong> They are a somewhat ugly hack to compensate for command line lengthlimitations on certain platforms (Windows, Solaris). Due to a combination oflimitations in make and the shell, command lines containing too many files willnot work properly. These helper files are part of an elaborate hack that willcompress the command line in the makefile and then uncompress it safely. We'renot proud of it, but it does fix the problem. If you have any bettersuggestions, we're all ears! :-)</p><p><strong>Q:</strong> I want to see the output of the commands that make runs, like in the oldbuild. How do I do that? <br /><strong>A:</strong> You specify the <code>LOG</code> variable to make. There are several log levels:</p><ul><li><strong><code>warn</code></strong> -- Default and very quiet.</li><li><strong><code>info</code></strong> -- Shows more progress information than warn.</li><li><strong><code>debug</code></strong> -- Echos all command lines and prints all macro calls forcompilation definitions.</li><li><strong><code>trace</code></strong> -- Echos all $(shell) command lines as well.</li></ul><p><strong>Q:</strong> When do I have to re-run <code>configure</code>? <br /><strong>A:</strong> Normally you will run <code>configure</code> only once for creating aconfiguration. You need to re-run configuration only if you want to change anyconfiguration options, or if you pull down changes to the <code>configure</code> script.</p><p><strong>Q:</strong> I have added a new source file. Do I need to modify the makefiles? <br /><strong>A:</strong> Normally, no. If you want to create e.g. a new native library, you willneed to modify the makefiles. But for normal file additions or removals, nochanges are needed. There are certan exceptions for some native libraries wherethe source files are spread over many directories which also contain sourcesfor other libraries. In these cases it was simply easier to create includelists rather than excludes.</p><p><strong>Q:</strong> When I run <code>configure --help</code>, I see many strange options, like<code>--dvidir</code>. What is this? <br /><strong>A:</strong> Configure provides a slew of options by default, to all projects thatuse autoconf. Most of them are not used in OpenJDK, so you can safely ignorethem. To list only OpenJDK specific features, use <code>configure --help=short</code>instead.</p><p><strong>Q:</strong> <code>configure</code> provides OpenJDK-specific features such as <code>--with-builddeps-server</code> that are not described in this document. What about those? <br /><strong>A:</strong> Try them out if you like! But be aware that most of these areexperimental features. Many of them don't do anything at all at the moment; theoption is just a placeholder. Others depend on pieces of code or infrastructurethat is currently not ready for prime time.</p><p><strong>Q:</strong> How will you make sure you don't break anything? <br /><strong>A:</strong> We have a script that compares the result of the new build system withthe result of the old. For most part, we aim for (and achieve) byte-by-byteidentical output. There are however technical issues with e.g. native binaries,which might differ in a byte-by-byte comparison, even when building twice withthe old build system. For these, we compare relevant aspects (e.g. the symboltable and file size). Note that we still don't have 100% equivalence, but we'reclose.</p><p><strong>Q:</strong> I noticed this thing X in the build that looks very broken by design.Why don't you fix it? <br /><strong>A:</strong> Our goal is to produce a build output that is as close as technicallypossible to the old build output. If things were weird in the old build, theywill be weird in the new build. Often, things were weird before due toobscurity, but in the new build system the weird stuff comes up to the surface.The plan is to attack these things at a later stage, after the new build systemis established.</p><p><strong>Q:</strong> The code in the new build system is not that well-structured. Will youfix this? <br /><strong>A:</strong> Yes! The new build system has grown bit by bit as we converted the oldsystem. When all of the old build system is converted, we can take a step backand clean up the structure of the new build system. Some of this we plan to dobefore replacing the old build system and some will need to wait until after.</p><p><strong>Q:</strong> Is anything able to use the results of the new build's default maketarget? <br /><strong>A:</strong> Yes, this is the minimal (or roughly minimal) set of compiled outputneeded for a developer to actually execute the newly built JDK. The idea isthat in an incremental development fashion, when doing a normal make, youshould only spend time recompiling what's changed (making it purelyincremental) and only do the work that's needed to actually run and test yourcode. The packaging stuff that is part of the <code>images</code> target is not needed fora normal developer who wants to test his new code. Even if it's quite fast,it's still unnecessary. We're targeting sub-second incremental rebuilds! ;-)(Or, well, at least single-digit seconds...)</p><p><strong>Q:</strong> I usually set a specific environment variable when building, but I can'tfind the equivalent in the new build. What should I do? <br /><strong>A:</strong> It might very well be that we have neglected to add support for anoption that was actually used from outside the build system. Email us and wewill add support for it!</p><p><a name="performance"></a></p><h3>Build Performance Tips</h3><p>Building OpenJDK requires a lot of horsepower. Some of the build tools can beadjusted to utilize more or less of resources such as parallel threads andmemory. The <code>configure</code> script analyzes your system and selects reasonablevalues for such options based on your hardware. If you encounter resourceproblems, such as out of memory conditions, you can modify the detected valueswith:</p><ul><li><strong><code>--with-num-cores</code></strong> -- number of cores in the build system, e.g.<code>--with-num-cores=8</code></li><li><strong><code>--with-memory-size</code></strong> -- memory (in MB) available in the build system,e.g. <code>--with-memory-size=1024</code></li></ul><p>It might also be necessary to specify the JVM arguments passed to the BootstrapJDK, using e.g. <code>--with-boot-jdk-jvmargs="-Xmx8G -enableassertions"</code>. Doingthis will override the default JVM arguments passed to the Bootstrap JDK.</p><p>One of the top goals of the new build system is to improve the buildperformance and decrease the time needed to build. This will soon also apply tothe java compilation when the Smart Javac wrapper is fully supported.</p><p>At the end of a successful execution of <code>configure</code>, you will get a performancesummary, indicating how well the build will perform. Here you will also getperformance hints. If you want to build fast, pay attention to those!</p><h4>Building with ccache</h4><p>The OpenJDK build supports building with ccache when using gcc or clang. Usingccache can radically speed up compilation of native code if you often rebuildthe same sources. Your milage may vary however so we recommend evaluating itfor yourself. To enable it, make sure it's on the path and configure with<code>--enable-ccache</code>.</p><h4>Building on local disk</h4><p>If you are using network shares, e.g. via NFS, for your source code, make surethe build directory is situated on local disk. The performance penalty isextremely high for building on a network share, close to unusable.</p><h4>Building only one JVM</h4><p>The old build builds multiple JVMs on 32-bit systems (client and server; and onWindows kernel as well). In the new build we have changed this default to onlybuild server when it's available. This improves build times for those notinterested in multiple JVMs. To mimic the old behavior on platforms thatsupport it, use <code>--with-jvm-variants=client,server</code>.</p><h4>Selecting the number of cores to build on</h4><p>By default, <code>configure</code> will analyze your machine and run the make process inparallel with as many threads as you have cores. This behavior can beoverridden, either "permanently" (on a <code>configure</code> basis) using<code>--with-num-cores=N</code> or for a single build only (on a make basis), using<code>make JOBS=N</code>.</p><p>If you want to make a slower build just this time, to save some CPU power forother processes, you can run e.g. <code>make JOBS=2</code>. This will force the makefilesto only run 2 parallel processes, or even <code>make JOBS=1</code> which will disableparallelism.</p><p>If you want to have it the other way round, namely having slow builds defaultand override with fast if you're impatient, you should call <code>configure</code> with<code>--with-num-cores=2</code>, making 2 the default. If you want to run with more cores,run <code>make JOBS=8</code></p><p><a name="troubleshooting"></a></p><h3>Troubleshooting</h3><h4>Solving build problems</h4><p>If the build fails (and it's not due to a compilation error in a source fileyou've changed), the first thing you should do is to re-run the build with moreverbosity. Do this by adding <code>LOG=debug</code> to your make command line.</p><p>The build log (with both stdout and stderr intermingled, basically the same asyou see on your console) can be found as <code>build.log</code> in your build directory.</p><p>You can ask for help on build problems with the new build system on either the<a href="http://mail.openjdk.java.net/mailman/listinfo/build-dev">build-dev</a> or the<a href="http://mail.openjdk.java.net/mailman/listinfo/build-infra-dev">build-infra-dev</a>mailing lists. Please include the relevant parts of the build log.</p><p>A build can fail for any number of reasons. Most failures are a result oftrying to build in an environment in which all the pre-build requirements havenot been met. The first step in troubleshooting a build failure is to recheckthat you have satisfied all the pre-build requirements for your platform.Scanning the <code>configure</code> log is a good first step, making sure that what itfound makes sense for your system. Look for strange error messages or anydifficulties that <code>configure</code> had in finding things.</p><p>Some of the more common problems with builds are briefly described below, withsuggestions for remedies.</p><ul><li><p><strong>Corrupted Bundles on Windows:</strong> <br />Some virus scanning software has been known to corrupt the downloading ofzip bundles. It may be necessary to disable the 'on access' or 'real time'virus scanning features to prevent this corruption. This type of 'real time'virus scanning can also slow down the build process significantly.Temporarily disabling the feature, or excluding the build output directorymay be necessary to get correct and faster builds.</p></li><li><p><strong>Slow Builds:</strong> <br />If your build machine seems to be overloaded from too many simultaneous C++compiles, try setting the <code>JOBS=1</code> on the <code>make</code> command line. Then tryincreasing the count slowly to an acceptable level for your system. Also:</p><p>Creating the javadocs can be very slow, if you are running javadoc, considerskipping that step.</p><p>Faster CPUs, more RAM, and a faster DISK usually helps. The VM build tendsto be CPU intensive (many C++ compiles), and the rest of the JDK will oftenbe disk intensive.</p><p>Faster compiles are possible using a tool called<a href="http://ccache.samba.org/">ccache</a>.</p></li><li><p><strong>File time issues:</strong> <br />If you see warnings that refer to file time stamps, e.g.</p><blockquote> <p><em>Warning message:</em> <code>File 'xxx' has modification time in the future.</code> <br /><em>Warning message:</em> <code>Clock skew detected. Your build may be incomplete.</code></p></blockquote><p>These warnings can occur when the clock on the build machine is out of syncwith the timestamps on the source files. Other errors, apparently unrelatedbut in fact caused by the clock skew, can occur along with the clock skewwarnings. These secondary errors may tend to obscure the fact that the trueroot cause of the problem is an out-of-sync clock.</p><p>If you see these warnings, reset the clock on the build machine, run"<code>gmake clobber</code>" or delete the directory containing the build output, andrestart the build from the beginning.</p></li><li><p><strong>Error message: <code>Trouble writing out table to disk</code></strong> <br />Increase the amount of swap space on your build machine. This could becaused by overloading the system and it may be necessary to use:</p><blockquote> <p><code>make JOBS=1</code></p></blockquote><p>to reduce the load on the system.</p></li><li><p><strong>Error Message: <code>libstdc++ not found</code>:</strong> <br />This is caused by a missing libstdc++.a library. This is installed as partof a specific package (e.g. libstdc++.so.devel.386). By default some 64-bitLinux versions (e.g. Fedora) only install the 64-bit version of thelibstdc++ package. Various parts of the JDK build require a static link ofthe C++ runtime libraries to allow for maximum portability of the builtimages.</p></li><li><p><strong>Linux Error Message: <code>cannot restore segment prot after reloc</code></strong> <br />This is probably an issue with SELinux (See <a href="http://en.wikipedia.org/wiki/SELinux">SELinux onWikipedia</a>). Parts of the VM is builtwithout the <code>-fPIC</code> for performance reasons.</p><p>To completely disable SELinux:</p><ol><li><code>$ su root</code></li><li><code># system-config-securitylevel</code></li><li><code>In the window that appears, select the SELinux tab</code></li><li><code>Disable SELinux</code></li></ol><p>Alternatively, instead of completely disabling it you could disable justthis one check.</p><ol><li>Select System->Administration->SELinux Management</li><li>In the SELinux Management Tool which appears, select "Boolean" from themenu on the left</li><li>Expand the "Memory Protection" group</li><li>Check the first item, labeled "Allow all unconfined executables to uselibraries requiring text relocation ..."</li></ol></li><li><p><strong>Windows Error Messages:</strong> <br /><code>*** fatal error - couldn't allocate heap, ...</code> <br /><code>rm fails with "Directory not empty"</code> <br /><code>unzip fails with "cannot create ... Permission denied"</code> <br /><code>unzip fails with "cannot create ... Error 50"</code></p><p>The CYGWIN software can conflict with other non-CYGWIN software. See theCYGWIN FAQ section on <a href="http://cygwin.com/faq/faq.using.html#faq.using.bloda">BLODA (applications that interfere withCYGWIN)</a>.</p></li><li><p><strong>Windows Error Message: <code>spawn failed</code></strong> <br />Try rebooting the system, or there could be some kind of issue with the diskor disk partition being used. Sometimes it comes with a "Permission Denied"message.</p></li></ul><hr /><p><a name="gmake"></a></p><h2>Appendix B: GNU make</h2><p>The Makefiles in the OpenJDK are only valid when used with the GNU version ofthe utility command <code>make</code> (usually called <code>gmake</code> on Solaris). A few notesabout using GNU make:</p><ul><li>You need GNU make version 3.81 or newer. On Windows 4.0 or newer isrecommended. If the GNU make utility on your systems is not of a suitableversion, see "<a href="#buildgmake">Building GNU make</a>".</li><li>Place the location of the GNU make binary in the <code>PATH</code>.</li><li><strong>Solaris:</strong> Do NOT use <code>/usr/bin/make</code> on Solaris. If your Solaris systemhas the software from the Solaris Developer Companion CD installed, youshould try and use <code>gmake</code> which will be located in either the <code>/usr/bin</code>,<code>/opt/sfw/bin</code> or <code>/usr/sfw/bin</code> directory.</li><li><strong>Windows:</strong> Make sure you start your build inside a bash shell.</li><li><strong>Mac OS X:</strong> The XCode "command line tools" must be installed on your Mac.</li></ul><p>Information on GNU make, and access to ftp download sites, are available on the<a href="http://www.gnu.org/software/make/make.html">GNU make web site </a>. The latestsource to GNU make is available at<a href="http://ftp.gnu.org/pub/gnu/make/">ftp.gnu.org/pub/gnu/make/</a>.</p><p><a name="buildgmake"></a></p><h3>Building GNU make</h3><p>First step is to get the GNU make 3.81 or newer source from<a href="http://ftp.gnu.org/pub/gnu/make/">ftp.gnu.org/pub/gnu/make/</a>. Building is alittle different depending on the OS but is basically done with:</p><pre><code> bash ./configure make</code></pre><hr /><p><a name="buildenvironments"></a></p><h2>Appendix C: Build Environments</h2><h3>Minimum Build Environments</h3><p>This file often describes specific requirements for what we call the "minimumbuild environments" (MBE) for this specific release of the JDK. What is listedbelow is what the Oracle Release Engineering Team will use to build the OracleJDK product. Building with the MBE will hopefully generate the most compatiblebits that install on, and run correctly on, the most variations of the samebase OS and hardware architecture. In some cases, these represent what is oftencalled the least common denominator, but each Operating System has differentaspects to it.</p><p>In all cases, the Bootstrap JDK version minimum is critical, we cannotguarantee builds will work with older Bootstrap JDK's. Also in all cases, moreRAM and more processors is better, the minimums listed below are simplyrecommendations.</p><p>With Solaris and Mac OS X, the version listed below is the oldest release wecan guarantee builds and works, and the specific version of the compilers usedcould be critical.</p><p>With Windows the critical aspect is the Visual Studio compiler used, which dueto it's runtime, generally dictates what Windows systems can do the builds andwhere the resulting bits can be used.</p><p><strong>NOTE: We expect a change here off these older Windows OS releases and to a'less older' one, probably Windows 2008R2 X64.</strong></p><p>With Linux, it was just a matter of picking a stable distribution that is agood representative for Linux in general.</p><p>It is understood that most developers will NOT be using these specificversions, and in fact creating these specific versions may be difficult due tothe age of some of this software. It is expected that developers are more oftenusing the more recent releases and distributions of these operating systems.</p><p>Compilation problems with newer or different C/C++ compilers is a commonproblem. Similarly, compilation problems related to changes to the<code>/usr/include</code> or system header files is also a common problem with older,newer, or unreleased OS versions. Please report these types of problems as bugsso that they can be dealt with accordingly.</p><blockquote> <p><table border="1"> <thead> <tr> <th>Base OS and Architecture</th> <th>OS</th> <th>C/C++ Compiler</th> <th>Bootstrap JDK</th> <th>Processors</th> <th>RAM Minimum</th> <th>DISK Needs</th> </tr> </thead> <tbody> <tr> <td>Linux X86 (32-bit) and X64 (64-bit)</td> <td>Oracle Enterprise Linux 6.4</td> <td>gcc 4.9.2 </td> <td>JDK 8</td> <td>2 or more</td> <td>1 GB</td> <td>6 GB</td> </tr> <tr> <td>Solaris SPARCV9 (64-bit)</td> <td>Solaris 11 Update 1</td> <td>Studio 12 Update 4 + patches</td> <td>JDK 8</td> <td>4 or more</td> <td>4 GB</td> <td>8 GB</td> </tr> <tr> <td>Solaris X64 (64-bit)</td> <td>Solaris 11 Update 1</td> <td>Studio 12 Update 4 + patches</td> <td>JDK 8</td> <td>4 or more</td> <td>4 GB</td> <td>8 GB</td> </tr> <tr> <td>Windows X86 (32-bit)</td> <td>Windows Server 2012 R2 x64</td> <td>Microsoft Visual Studio C++ 2013 Professional Edition</td> <td>JDK 8</td> <td>2 or more</td> <td>2 GB</td> <td>6 GB</td> </tr> <tr> <td>Windows X64 (64-bit)</td> <td>Windows Server 2012 R2 x64</td> <td>Microsoft Visual Studio C++ 2013 Professional Edition</td> <td>JDK 8</td> <td>2 or more</td> <td>2 GB</td> <td>6 GB</td> </tr> <tr> <td>Mac OS X X64 (64-bit)</td> <td>Mac OS X 10.9 "Mavericks"</td> <td>Xcode 6.3 or newer</td> <td>JDK 8</td> <td>2 or more</td> <td>4 GB</td> <td>6 GB</td> </tr> </tbody> </table></p></blockquote><hr /><p><a name="SDBE"></a></p><h3>Specific Developer Build Environments</h3><p>We won't be listing all the possible environments, but we will try to providewhat information we have available to us.</p><p><strong>NOTE: The community can help out by updating this part of the document.</strong></p><h4>Fedora</h4><p>After installing the latest <a href="http://fedoraproject.org">Fedora</a> you need toinstall several build dependencies. The simplest way to do it is to execute thefollowing commands as user <code>root</code>:</p><pre><code> yum-builddep java-1.7.0-openjdk yum install gcc gcc-c++</code></pre><p>In addition, it's necessary to set a few environment variables for the build:</p><pre><code> export LANG=C export PATH="/usr/lib/jvm/java-openjdk/bin:${PATH}"</code></pre><h4>CentOS 5.5</h4><p>After installing <a href="http://www.centos.org/">CentOS 5.5</a> you need to make sure youhave the following Development bundles installed:</p><ul><li>Development Libraries</li><li>Development Tools</li><li>Java Development</li><li>X Software Development (Including XFree86-devel)</li></ul><p>Plus the following packages:</p><ul><li>cups devel: Cups Development Package</li><li>alsa devel: Alsa Development Package</li><li>Xi devel: libXi.so Development Package</li></ul><p>The freetype 2.3 packages don't seem to be available, but the freetype 2.3sources can be downloaded, built, and installed easily enough from <a href="http://downloads.sourceforge.net/freetype">thefreetype site</a>. Build and installwith something like:</p><pre><code> bash ./configure make sudo -u root make install</code></pre><p>Mercurial packages could not be found easily, but a Google search should findones, and they usually include Python if it's needed.</p><h4>Debian 5.0 (Lenny)</h4><p>After installing <a href="http://debian.org">Debian</a> 5 you need to install severalbuild dependencies. The simplest way to install the build dependencies is toexecute the following commands as user <code>root</code>:</p><pre><code> aptitude build-dep openjdk-7 aptitude install openjdk-7-jdk libmotif-dev</code></pre><p>In addition, it's necessary to set a few environment variables for the build:</p><pre><code> export LANG=C export PATH="/usr/lib/jvm/java-7-openjdk/bin:${PATH}"</code></pre><h4>Ubuntu 12.04</h4><p>After installing <a href="http://ubuntu.org">Ubuntu</a> 12.04 you need to install severalbuild dependencies. The simplest way to do it is to execute the followingcommands:</p><pre><code> sudo aptitude build-dep openjdk-7 sudo aptitude install openjdk-7-jdk</code></pre><p>In addition, it's necessary to set a few environment variables for the build:</p><pre><code> export LANG=C export PATH="/usr/lib/jvm/java-7-openjdk/bin:${PATH}"</code></pre><h4>OpenSUSE 11.1</h4><p>After installing <a href="http://opensuse.org">OpenSUSE</a> 11.1 you need to installseveral build dependencies. The simplest way to install the build dependenciesis to execute the following commands:</p><pre><code> sudo zypper source-install -d java-1_7_0-openjdk sudo zypper install make</code></pre><p>In addition, it is necessary to set a few environment variables for the build:</p><pre><code> export LANG=C export PATH="/usr/lib/jvm/java-1.7.0-openjdk/bin:$[PATH}"</code></pre><p>Finally, you need to unset the <code>JAVA_HOME</code> environment variable:</p><pre><code> export -n JAVA_HOME`</code></pre><h4>Mandriva Linux One 2009 Spring</h4><p>After installing <a href="http://mandriva.org">Mandriva</a> Linux One 2009 Spring you needto install several build dependencies. The simplest way to install the builddependencies is to execute the following commands as user <code>root</code>:</p><pre><code> urpmi java-1.7.0-openjdk-devel make gcc gcc-c++ freetype-devel zip unzip libcups2-devel libxrender1-devel libalsa2-devel libstc++-static-devel libxtst6-devel libxi-devel</code></pre><p>In addition, it is necessary to set a few environment variables for the build:</p><pre><code> export LANG=C export PATH="/usr/lib/jvm/java-1.7.0-openjdk/bin:${PATH}"</code></pre><h4>OpenSolaris 2009.06</h4><p>After installing <a href="http://opensolaris.org">OpenSolaris</a> 2009.06 you need toinstall several build dependencies. The simplest way to install the builddependencies is to execute the following commands:</p><pre><code> pfexec pkg install SUNWgmake SUNWj7dev sunstudioexpress SUNWcups SUNWzip SUNWunzip SUNWxwhl SUNWxorg-headers SUNWaudh SUNWfreetype2</code></pre><p>In addition, it is necessary to set a few environment variables for the build:</p><pre><code> export LANG=C export PATH="/opt/SunStudioExpress/bin:${PATH}"</code></pre><hr /><p>End of the OpenJDK build README document.</p><p>Please come again!</p> </body></html>