Android system source code download and compile, Brush MACHINE--NEXUS6 measurement

<span id="Label3"></p>Objective<p><p>This blog post records the entire process of Android downloading from the system source to the brush machine.</p></p><p><p>(https://source.android.com/source/build-numbers.html Page list information to find their own device corresponding to the Android version to choose, blog post Select MOB301)</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs scss"><span class="hljs-function">Nexus6(<span class="hljs-string">"shamu"</span>)</span>Android系统：选择了Android官网上的MOB301对应的android-6<span class="hljs-class">.0</span><span class="hljs-class">.1_r42</span>驱动：自然就是MOB301_Nexus6对应的驱动了编译系统：Ubuntu14<span class="hljs-class">.0</span><span class="hljs-class">.4</span></code></pre></pre><p><p>PS: a little Wordy ~</p></p><pre><pre><code> 我们知道仅仅看代码,提高是比较有限的,而且理解起来也比较肤浅,往往过目就忘. 而自己写过的代码,往往会印象比较深刻,在写的时候也会比较容易理解流程. 所以我们在看代码的同时, 如果能修改代码, 在手机上跑起来并看到修改的效果,这无疑会加快看代码的效率和积极性. 所以这篇文章,就讲解一下如何自己编译Android M的源码,并且在Nexus 6上跑起来. 至于为何需要自己编译固件,而不是直接安装Google给出的工厂固件?原因是Google给出的工厂固件是User版本,是没法随心所欲Push东西进去的. 所以我们需要编译自己的Userdebug版本. 另外你需要知道AOSP,AOSP即Android Open Source Project 汉语意思是：谷歌开放源代码项目.我们通过Google官方下载的源代码,就是AOSP的代码, 其中是不包含Google开发的那些个应用的,各个厂商拿到的也是这个版本,在这个版本的基础上进行修改. 而Google发布的工厂固件则是包含全套Google服务的. 厂商如果想安装Google服务,就需要过Google的那一套认证,比较麻烦,而且价格不菲,鉴于Google在国内的尴尬地位,国内很多厂商都没有过这个认证. 因此有人会说刷出来的ROM和Google发布的user版本的ROM看起来界面不一致的原因就在于此。</code></pre></pre>Body<p><p>Let's start by knowing a few points first:<br>1. What is the phone model on hand?<br>Is there a system source code and driver to support the phone on the 2.Android website?</p></p><p><p><strong>This article takes Nexus 6 as an example, and the following content is no longer duplicated.</strong></p></p><p><p><strong>Ubuntu Compilation Environment Configuration</strong></p></p><p><p>This article is based on the Android system, so do not write about VirtualBox Ubuntu14.04 content (online search, a bunch of information)</p></p><p><p>After the Ubuntu system is installed, we execute it under the command window:</p></p><p><p>1. Download the compilation-related components by executing the following command:</p></p><pre class="prettyprint"><code class=" hljs lasso">sudo apt<span class="hljs-attribute"><span class="hljs-attribute">-get</span></span>Install Flex Bison GPERF Build<span class="hljs-attribute"><span class="hljs-attribute">-essential</span></span>Curl ZLIB1G<span class="hljs-attribute"><span class="hljs-attribute">-dev</span></span>G<span class="hljs-subst"><span class="hljs-subst">++-</span></span>Multilib g<span class="hljs-subst"><span class="hljs-subst">++-</span></span><span class="hljs-number"><span class="hljs-number">4.4</span></span><span class="hljs-attribute"><span class="hljs-attribute">-multilib</span></span>Libc6<span class="hljs-attribute"><span class="hljs-attribute">-dev</span></span><span class="hljs-attribute"><span class="hljs-attribute">-i386</span></span>Lib32ncurses5<span class="hljs-attribute"><span class="hljs-attribute">-dev</span></span>LIB32Z1 lib32ncurses5 lib32bz2<span class="hljs-subst"><span class="hljs-subst">-</span></span><span class="hljs-number"><span class="hljs-number">1.0</span></span>X11proto<span class="hljs-attribute"><span class="hljs-attribute">-core</span></span><span class="hljs-attribute"><span class="hljs-attribute">-dev</span></span>Libx11<span class="hljs-attribute"><span class="hljs-attribute">-dev</span></span>Lib32readline<span class="hljs-attribute"><span class="hljs-attribute">-gplv2</span></span><span class="hljs-attribute"><span class="hljs-attribute">-dev</span></span>Lib32z1<span class="hljs-attribute"><span class="hljs-attribute">-dev</span></span>Mingw32 LIBXML2<span class="hljs-attribute"><span class="hljs-attribute">-utils</span></span>GnuPG zip Xsltproc python<span class="hljs-attribute"><span class="hljs-attribute">-markdown</span></span>Wine Tofrodos</code></pre><p><p>2.java Environment Configuration (1.7)<br>Switch ubuntu to 163 source, download and install openjdk-7 related JRE and JDK<br>sudo apt-get install corresponding OPENJDK component name</p></p><p><p><strong>Android system source code download and drive SH script download</strong></p></p><p><p>1.Android system source code download (the Next steps are best done based on the flip Wall)</p></p><p><p>This section can also refer to the Andorid official website Introduction (HTTP://SOURCE.ANDROID.COM/SOURCE/DOWNLOADING.HTML)</p></p><p><p>(1). Install the command line mode to work with the file Transfer tool Curl.</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs bash"><span class="hljs-built_in">sudo</span> apt-get install curl</code></pre></pre><p><p>(2). Open Source Distributed version control system git (android project using git management).</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs bash"><span class="hljs-built_in">sudo</span> apt-get install git</code></pre></pre><p><p>(3). Install the Repo command-line tool (repo is a google-developed tool to better manage Android projects based on Git)</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs perl"><span class="hljs-keyword">mkdir</span> ~<span class="hljs-regexp">/binPATH=~/bin</span>:<span class="hljs-variable">$PATH</span>curl http:<span class="hljs-regexp">//commondatastorage</span>.googleapis.com/git-repo-downloads/repo > ~<span class="hljs-regexp">/bin/repo</span><span class="hljs-keyword">chmod</span> a+<span class="hljs-keyword">x</span> ~<span class="hljs-regexp">/bin/repo</span></code></pre></pre><p><p>(4). Initializing the Repo client</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs livecodeserver"><span class="hljs-keyword">https</span>://android.googlesource.com/<span class="hljs-built_in">platform</span>/manifest -b 你所要选择的android系统对应的Branch （MOB301对应android-<span class="hljs-number">6.0</span><span class="hljs-number">.1</span><span class="hljs-keyword">https</span>://android.googlesource.com/<span class="hljs-built_in">platform</span>/manifest -b android-<span class="hljs-number">6.0</span><span class="hljs-number">.1</span>_r42</code></pre></pre><p><p>List of branch in: Http://source.android.com/source/build-numbers.html#source-code-tags-and-builds Web site to see related list information<br></p></p><p><p>(5). download Android source code</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs ">repo sync</code></pre></pre><p><p>After the execution into a long wait, the system probably has more than 20 g to download, so you can put the download at night (remember to be in the wall can access the network state yo ~)</p></p><p><p>When You're done, It's ready.<br></p></p><p><p><strong>(PS: this time there is a folder in the Android Directory. repo, This folder probably takes up 30G of space, assuming you do not need to update the system later, then this folder can be Deleted)</strong></p></p><p><p></p></p><p><p><strong>Locate the appropriate driver SH script in the device driver page and download</strong><br>Nexus Driver Page: Https://developers.google.com/android/nexus/drivers</p></p><p><p></p></p><p><p>After downloading the three compressed packages, extract the three sh files.<br>Copy the three SH files to the Android compilation Directory.</p></p><p><p></p></p><p><p>Executing these 3 sh files will download the relevant driver files to the vendor directory</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs lasso"><span class="hljs-built_in">.</span>/extract<span class="hljs-attribute">-broadcom</span><span class="hljs-attribute">-shamu</span><span class="hljs-built_in">.</span>sh<span class="hljs-built_in">.</span>/extract<span class="hljs-attribute">-moto</span><span class="hljs-attribute">-shamu</span><span class="hljs-built_in">.</span>sh<span class="hljs-built_in">.</span>/extract<span class="hljs-attribute">-qcom</span><span class="hljs-attribute">-shamu</span><span class="hljs-built_in">.</span>sh</code></pre></pre><p><p>The process will let us look at some of the statement information, after reading the input I accept can:<br></p></p><p><p><strong>Compiling Android system</strong></p></p><p><p>(1). Environment Initialization</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs bash"><span class="hljs-built_in">source</span> build/envsetup.sh</code></pre></pre><p><p>After execution, some files are included:</p></p><pre class="prettyprint"><code class=" hljs avrasm">[email protected]:~/android$ Source./build/envsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/asus/deb/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/asus/flo/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/asus/fugu/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/generic/mini-emulator-arm64/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/generic/mini-emulator-armv7-a-neon/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/generic/mini-emulator-mips/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/generic/mini-emulator-x86_64/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/generic/mini-emulator-x86/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/htc/flounder/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/huawei/angler/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/lge/bullhead/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/lge/hammerhead/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including Device/moto/shamu/vendorsetup<span class="hljs-preprocessor"><span class="hljs-preprocessor">. SH</span></span>including SDK/BASH_COMPLETION/ADB<span class="hljs-preprocessor"><span class="hljs-preprocessor">. Bash</span></span></code></pre><p><p>(2) Lunch Select the type to build</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs ">lunch</code></pre></pre><p><p>After the command is executed, the build type that is currently available for selection is listed, corresponding to the one you want</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs ruby">panghu<span class="hljs-variable">@panghu</span><span class="hljs-symbol">:~/Android</span><span class="hljs-variable">$ </span>lunch<span class="hljs-constant">You</span><span class="hljs-string">‘re building on LinuxLunch menu... pick a combo: 1. aosp_arm-eng 2. aosp_arm64-eng 3. aosp_mips-eng 4. aosp_mips64-eng 5. aosp_x86-eng 6. aosp_x86_64-eng 7. aosp_deb-userdebug 8. aosp_flo-userdebug 9. full_fugu-userdebug 10. aosp_fugu-userdebug 11. mini_emulator_arm64-userdebug 12. m_e_arm-userdebug 13. mini_emulator_mips-userdebug 14. mini_emulator_x86_64-userdebug 15. mini_emulator_x86-userdebug 16. aosp_flounder-userdebug 17. aosp_angler-userdebug 18. aosp_bullhead-userdebug 19. aosp_hammerhead-userdebug 20. aosp_hammerhead_fp-userdebug 21. aosp_shamu-userdebugWhich would you like? [aosp_arm-eng] 21 </span></code></pre></pre><p><p></p></p><p><p><strong>Model Comparison</strong><br></p></p><p><p>(3) Start compiling</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs lasso"><span class="hljs-attribute">-j8</span></code></pre></pre><p><p>Wait for compilation to end ... Ash is often long. the machine is good about 1-2 hours, the machine is bad, that acid cool ...!!!!!</p></p><p><p>After compiling, you will be prompted as Follows:<br># # # #make completed successfully # # #</p></p><p><p><strong>Brush Machine</strong></p></p><p><p>NEXUS6 off, Press and hold the volume down + power, Enter recovery mode</p></p><p><p>then, under the source root directory (android root), execute the following command:</p></p><pre class="prettyprint"><pre class="prettyprint"><code class=" hljs lasso"><span class="hljs-attribute">-w</span> flashall</code></pre></pre><p><p>If you are prompted:< waiting for device >, prove that your virtual machine VirtualBox does not recognize your phone, can be in the VirtualBox menu, "device", "assign USB device", Select the device name that corresponds to your phone.</p></p><pre class="prettyprint"><code class=" hljs r">[email protected]:~/android$ fastboot-w flashall< waiting<span class="hljs-keyword"><span class="hljs-keyword"></span> for</span>Device >target reported max download size of<span class="hljs-number"><span class="hljs-number">536870912</span></span>bytescreating filesystem with Parameters:size:<span class="hljs-number"><span class="hljs-number">28474998784</span></span>Block size:<span class="hljs-number"><span class="hljs-number">4096</span></span>Blocks per group:<span class="hljs-number"><span class="hljs-number">32768</span></span>Inodes per group:<span class="hljs-number"><span class="hljs-number">8160</span></span>Inode size:<span class="hljs-number"><span class="hljs-number"></span> the</span>Journal blocks:<span class="hljs-number"><span class="hljs-number">32768</span></span>Label:blocks:<span class="hljs-number"><span class="hljs-number">6951904</span></span>Block groups:<span class="hljs-number"><span class="hljs-number">213</span></span>Reserved Block Group Size:<span class="hljs-number"><span class="hljs-number">1024x768</span></span>Created filesystem with<span class="hljs-number"><span class="hljs-number"></span> one</span>/<span class="hljs-number"><span class="hljs-number">1738080</span></span>Inodes and<span class="hljs-number"><span class="hljs-number">153124</span></span>/<span class="hljs-number"><span class="hljs-number">6951904</span></span>blockscreating filesystem with Parameters:size:<span class="hljs-number"><span class="hljs-number">268435456</span></span>Block size:<span class="hljs-number"><span class="hljs-number">4096</span></span>Blocks per group:<span class="hljs-number"><span class="hljs-number">32768</span></span>Inodes per group:<span class="hljs-number"><span class="hljs-number">8192</span></span>Inode size:<span class="hljs-number"><span class="hljs-number"></span> the</span>Journal blocks:<span class="hljs-number"><span class="hljs-number">1024x768</span></span>Label:blocks:<span class="hljs-number"><span class="hljs-number">65536</span></span>Block groups:<span class="hljs-number"><span class="hljs-number">2</span></span>Reserved Block Group Size:<span class="hljs-number"><span class="hljs-number"></span> the</span>Created filesystem with<span class="hljs-number"><span class="hljs-number"></span> one</span>/<span class="hljs-number"><span class="hljs-number">16384</span></span>Inodes and<span class="hljs-number"><span class="hljs-number">2089</span></span>/<span class="hljs-number"><span class="hljs-number">65536</span></span>Blocks--------------------------------------------Bootloader Version ...: moto-apq8084-<span class="hljs-number"><span class="hljs-number">71.18</span></span>Baseband Version ...: d4.01-<span class="hljs-number"><span class="hljs-number">9625</span></span>-<span class="hljs-number"><span class="hljs-number">05.34</span></span>+fsg-<span class="hljs-number"><span class="hljs-number">9625</span></span>-<span class="hljs-number"><span class="hljs-number">02.111</span></span>Serial number ....: zy222wqn82--------------------------------------------checking product ... OKAY [<span class="hljs-number"><span class="hljs-number">0.</span></span>004s]sending<span class="hljs-string"><span class="hljs-string">' Boot '</span></span>(<span class="hljs-number"><span class="hljs-number">8201</span></span>KB)<span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">1.</span></span>291s]writing<span class="hljs-string"><span class="hljs-string">' Boot '</span></span><span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">0.</span></span>153s]sending<span class="hljs-string"><span class="hljs-string">' recovery '</span></span>(<span class="hljs-number"><span class="hljs-number">8917</span></span>KB)<span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">1.</span></span>403s]writing<span class="hljs-string"><span class="hljs-string">' recovery '</span></span><span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">0.</span></span>126s]sending Sparse<span class="hljs-string"><span class="hljs-string">' System '</span></span>(<span class="hljs-number"><span class="hljs-number">516549</span></span>KB)<span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">.</span></span>029s]writing<span class="hljs-string"><span class="hljs-string">' System '</span></span><span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">7.</span></span>818s]sending Sparse<span class="hljs-string"><span class="hljs-string">' System '</span></span>(<span class="hljs-number"><span class="hljs-number">137398</span></span>KB)<span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">.</span></span>156s]writing<span class="hljs-string"><span class="hljs-string">' System '</span></span><span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">2.</span></span>137s]erasing<span class="hljs-string"><span class="hljs-string">' UserData '</span></span><span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">2.</span></span>898s]sending<span class="hljs-string"><span class="hljs-string">' UserData '</span></span>(<span class="hljs-number"><span class="hljs-number">139061</span></span>KB)<span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">.</span></span>777s]writing<span class="hljs-string"><span class="hljs-string">' UserData '</span></span><span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">2.</span></span>672s]erasing<span class="hljs-string"><span class="hljs-string">' Cache '</span></span><span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">0.</span></span>045s]sending<span class="hljs-string"><span class="hljs-string">' Cache '</span></span>(<span class="hljs-number"><span class="hljs-number">6248</span></span>KB)<span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">0.</span></span>983s]writing<span class="hljs-string"><span class="hljs-string">' Cache '</span></span><span class="hljs-keyword"><span class="hljs-keyword">...</span></span>OKAY [<span class="hljs-number"><span class="hljs-number">0.</span></span>107s]rebooting...finished. Total Time:<span class="hljs-number"><span class="hljs-number">149.</span></span>323s</code></pre>Conclusion<p><p>OK, so far, android system download, compile, The brush machine is all over, you can start your own Android system customization Tour. (PS: after the original is finished, it is recommended to try to get cm system, cm did some optimization, feel better!) )</p></p> <p><p>Android system source code download and compile, Brush MACHINE--NEXUS6 measurement</p></p></span>