Changes between Initial Version and Version 1 of Yocto/NativeCompile

Timestamp:

10/22/2017 05:28:45 AM (7 years ago)

Author:

trac

Comment:

--

Yocto/NativeCompile

@@ +1 @@
+{{{#!html
+          <div id="wikipage" class="trac-content"><p>
+</p><div class="wiki-toc">
+<ol>
+  <li>
+    <a href="#NativeCompile">Native Compile</a>
+    <ol>
+      <li>
+        <a href="#InstallingDeveloperTools">Installing Developer Tools</a>
+      </li>
+      <li>
+        <a href="#CompileCProgram">Compile C Program</a>
+      </li>
+      <li>
+        <a href="#CompileCProgram1">Compile C++ Program</a>
+      </li>
+      <li>
+        <a href="#CompileUsingMake">Compile Using Make</a>
+      </li>
+    </ol>
+  </li>
+</ol>
+</div><p>
+</p>
+<h1 id="NativeCompile">Native Compile</h1>
+<p>
+Native Compiling is when you build a program on the target device itself. This is different from using the <a class="wiki" href="/wiki/Yocto/SDK">SDK</a> to compile on a host system and copy the binaries onto the target device. The goal of this page is to instruct how to install and use some of these developer tools on the target device.
+</p>
+<h2 id="InstallingDeveloperTools">Installing Developer Tools</h2>
+<p>
+To start, it is required to modify the base Yocto build on the desktop machine with the developer tools included in the build.
+</p>
+<ol><li>Start by building the Yocto OS on the development desktop <a class="wiki" href="/wiki/Yocto/Building">Yocto Building page</a>
+</li><li>There are several tools required to be installed from the Yocto build system to get the proper development tools for native compilation. The best way to build these packages into your image without having to edit the <tt>image.bb</tt> file itself is to edit the <tt>local.conf</tt> file instead in the <tt>build/conf/</tt> directory.
+<ol><li>Edit the <tt>local.conf</tt> file in the <tt>build/conf/</tt> directory on your desktop machine where the Yocto build is.
+<ol class="loweralpha"><li>The following lines are required to be added:
+<div class="code"><pre><span class="nv">IMAGE_FEATURES_append</span> <span class="o">=</span> <span class="s2">" tools-sdk dev-pkgs "</span>
+<span class="nv">IMAGE_INSTALL_append</span> <span class="o">=</span> <span class="s2">" kernel-dev git subversion "</span>
+</pre></div></li><li>Adding the above lines to either your own <tt>image.bb</tt> or to the <tt>local.conf</tt> file will install many dev tools and linux headers. These include <tt>gcc</tt>, <tt>g++</tt>, <tt>make</tt>, <tt>autoconf</tt>, <tt>perl</tt>, <tt>git/svn</tt>, and many more totaling to roughly 90mb of extra disk space.
+</li></ol></li></ol></li></ol><ol start="3"><li>After adding these lines, re-build the Yocto OS
+</li><li>Flash the new .ubi to the Gateworks SBC
+</li></ol><ul><li>Steps regarding building can be found on the main <a class="wiki" href="/wiki/Yocto/Building">Yocto Building page</a>
+</li></ul><h2 id="CompileCProgram">Compile C Program</h2>
+<p>
+To compile a simple hello world C application on the Gateworks SBC, please see the following example.
+</p>
+<p>
+This will only work once the Installation of the Developer Tools above has been performed.
+</p>
+<ol><li>First write a simple C application
+<div class="code"><pre>cat <span class="s">&lt;&lt;EOF &gt; hello.c
+#include &lt;stdio.h&gt;
+
+int main(void) {
+    puts("Hello, world!");
+    return 0;
+}
+EOF</span>
+</pre></div></li></ol><ol start="2"><li>Next, compile and run
+<div class="code"><pre>gcc hello.c -o hello_c
+./hello_c
+</pre></div></li></ol><h2 id="CompileCProgram1">Compile C++ Program</h2>
+<p>
+To compile a simple hello world C++ application, please see the following example.
+</p>
+<ol><li>First write a simple C++ application
+<div class="code"><pre>cat <span class="s">&lt;&lt;EOF &gt; hello.cpp
+#include &lt;iostream&gt;
+
+int main() {
+    std::cout &lt;&lt; "Hello, world!" &lt;&lt; std::endl;
+    return 0;
+}
+EOF</span>
+</pre></div></li></ol><ol start="2"><li>Next, compile and run
+<div class="code"><pre>g++ hello.cpp -o hello_cpp
+./hello_cpp
+</pre></div></li></ol><h2 id="CompileUsingMake">Compile Using Make</h2>
+<p>
+This example will clone the <tt>gst-gateworks-apps</tt> project and compile it. Note that compiling this program requires that <tt>gstreamer-1.0</tt> and <tt>gstreamer1.0-rtsp-server</tt> are installed which are included by default in the <tt>gateworks-image-multimedia</tt> image.
+</p>
+<ol><li>First, get source code
+<div class="code"><pre>git clone https://github.com/Gateworks/gst-gateworks-apps.git
+<span class="nb">cd </span>gst-gateworks-apps
+</pre></div></li></ol><ol start="2"><li>Compile
+<div class="code"><pre>make
+</pre></div></li></ol><p>
+Binaries are stored in the <tt>bin/</tt> directory.
+</p>
+}}}