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class="jd-descr"><a name="androidGettingSourceCodeTitle"></a><h1>Getting Source Code</h1><a name="toc"/><div style="padding:10px"><a href="#androidSourceSetupBuildGitSetup">Introduction</a><br/><a href="#androidSourceSetupBuildGitSetupInstall">Installing and Configuring Git</a><br/><a href="#androidSourceSetupBuildGitSetupServer">Establishing Server Access</a><br/><div style="padding-left:40px"><a href="#androidSourceSetupBuildGitSetupServerRSAKeys">Generating RSA Keys</a><br/><a href="#androidSourceSetupBuildGitSetupServerVerifyConnection">Verifying a Connection to the Git Server</a><br/></div><a href="#androidSourceSetupGetCode">Downloading Code</a><br/><a href="#androidSourceSetupExtractingPatch">Extracting an Android Patch</a><br/></div></font></div><a name="androidSourceSetupBuildGitSetup"></a><h2>Introduction</h2><p>Android relies on Git, a version control system, to install the Android platform. You will need to install Git 1.5.2 or greater in order to access the source tree. Please visit <a href="http://git.or.cz/">http://git.or.cz/</a> for more information regarding Git.</p><p>Git permits you to control access to working directories, and we recommend that you use it to limit Android repository access to only a few people within your organization (please refer to your Google NDA for potential contractual restraints on sharing Android source access). </p><p>You may clone Google's repository to a local copy for sharing internally (see Git documentation for details).</p><a name="androidSourceSetupBuildGitSetupInstall"></a><h2>Installing and Configuring Git</h2><p>To install the Git package, execute:</p><pre class="prettyprint">% sudo apt-get install git-core</pre><a name="androidSourceSetupBuildGitSetupServer"></a><h2>Establishing Server Access</h2><p>Once Git is cleanly installed, you need to establish a connection with Google's Git server, a connection that requires an RSA key in order to authenticate requests.</p><a name="androidSourceSetupBuildGitSetupServerRSAKeys"></a><h3>Generating RSA Keys</h3><p>Each developer must have a unique RSA key in order to access Android source code. To generate an RSA key: </p><p><ol><li>Type:<br/><pre class="prettyprint">% ssh-keygen -t rsa -C email@domain.com</pre><br/>You must use a valid email address to create your key.</li><li>When prompted, indicate the file to which you wish to write your key (<code>id_rsa</code> in this example).</li><li>When prompted, associate a passphrase with your key.</li><li>Upon success, you should have two files saved to the designated directory: </li><ul> <li><code>id_rsa</code>: This file contains the private half of your RSA key. You shouldn't share this file with anyone. </li> <li><code>id_rsa.pub</code>: This is the public half or your RSA key and you should send it to your Google technical account manager.</li> </ul></ol></p><p>Send your Google Account Manager your public key file in order to establish Git server access. </p><a name="androidSourceSetupBuildGitSetupServerVerifyConnection"></a><h3>Verifying a Connection to the Git Server</h3><p>Once you have generated an RSA key and shared the public file with Google, you can test your connection with the Git server with the following command:</p><pre class="prettyprint">% ssh android-git.ext.google.com</pre><p>You should receive one of the following results:</p><table border=1 cellpadding=2 cellspacing=0> <tbody><tr> <th scope="col">Result</th> <th scope="col">Cause</th> <th scope="col">Action</th> </tr> <tr> <td><code>fatal: What do you think I am? A shell?<BR>Connection to android-git closed.</code></pre> </td> <td>Success</td> <td>None. You successfully connected to the Git server. (You should not have shell access and it's expected to receive this error.)</td> </tr> <tr> <td>ssh hangs and eventually times out. </td> <td>Your setup is failing to locate and establish a basic connection. </td> <td>Google needs to debug network settings. </td> </tr> <tr> <td>Error: Permission denied <public key> </td> <td>Either you are not using the matching username or the RSA private key does not match the public key. </td> <td>Try executing:<BR> <code>% ssh $USER@android- git.ext.google.com</code></td> </tr></table><a name="androidSourceSetupGetCode"></a><h2>Downloading Code</h2><p>Android source code is maintained in two repositories: <code>device</code> and <code>kernel</code>. The <code>device</code> repository includes the Android framework (things like the Activity Manager, Window Manager, Telephony Manager, View System, etc.). The <code>kernel</code> repository includes the core code necessary to run the operating system (things like the Display Driver, Camera Driver, Keypad Driver, Power Management, etc.). (Please see <a href="http://code.google.com/android/what-is-android.html">What is Android?</a> for details.)</p><p>Save device and kernel code at the same directory level, for example:</p><p><ul><li><code>/home/joe/android/device</code></li><li><code>/home/joe/android/kernel</code></li></ul></p><p><b>Device Code</b></p><p>To download device code, you need your username and a unique <code><path></code> string supplied by Google to execute the following:</p><pre class="prettyprint">% git-clone $USER@android-git.ext.google.com:<path>/device.git</pre><p><b>Kernel Code</b></p><p>To download kernel code, you need your username and a unique <code><path></code> string supplied by Google to execute the following:</p><pre class="prettyprint">% git-clone $USER@android-git.ext.google.com:<path>/kernel.git</pre> <a name="androidSourceSetupExtractingPatch"></a><h2>Extracting an Android Patch</h2><p>You likely already have Linux running on your platform and only need to integrate Android-specific changes. The following directions describe how to extract an Android patch.</p><ol> <li>Download a generic version of the Linux kernel that matches the Linux version downloaded with the Android Kernel code.</li> <li>Run <code>diff</code> on the two kernel packages to get Android-specific changes.</li> <li>Apply the patch to your target kernel and build.</li></ol><p><span class="lh2"><a name="androidFooter"></a></span> </div> </div> <!-- end gc-pagecontent --> </div> <!-- end gooey wrapper --> </div> <!-- end codesearchresults --> <div id="gc-footer" dir="ltr"> <div class="text"> ©2008 Google<!-- - <a href="/">Code Home</a> - <a href="http://www.google.com/accounts/TOS">Site Terms of Service</a> - <a href="http://www.google.com/privacy.html">Privacy Policy</a> - <a href="/more">Site Directory</a> --></div> </div> <!-- end gc-footer --></div><!-- end gc-containter --><script src="http://www.google-analytics.com/ga.js" type="text/javascript"></script><script type="text/javascript"> try { var pageTracker = _gat._getTracker("UA-18071-1"); pageTracker._setAllowAnchor(true); pageTracker._initData(); pageTracker._trackPageview(); } catch(e) {}</script><div id="jd-build-id"> v0.5 - 25 September 2008</div></div></div></div></body></html>?? 快捷鍵說明
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