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<h1 id="run-mxnet-scala-examples-using-the-intellij-ide-macos">Run MXNet Scala Examples Using the IntelliJ IDE (macOS)</h1>
<p>This tutorial guides you through setting up a Scala project in the IntelliJ IDE on macOS, and shows how to use the MXNet package from your application.</p>
<h2 id="prerequisites">Prerequisites:</h2>
<p>To use this tutorial you need the following software:</p>
<ul>
<li><a href="https:///www.oracle.com/technetwork/java/javase/downloads/index.html">Java 8 JDK</a></li>
<li><a href="https://maven.apache.org/install.html">Maven</a></li>
<li><a href="https://www.scala-lang.org/download/">Scala</a> - comes with IntelliJ, so you don&#39;t need to install it separately</li>
<li><a href="https://opencv.org/">OpenCV</a></li>
<li><a href="https://www.jetbrains.com/idea/">IntelliJ IDE</a></li>
</ul>
<p>The following instructions are provided for macOS and Ubuntu 16.04. Windows support is not yet available.</p>
<h3 id="mac-prerequisites-setup">Mac Prerequisites Setup</h3>
<p><strong>Step 1.</strong> Install brew:
<code>
/usr/bin/ruby -e &quot;$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)&quot;
</code></p>
<p>Or, if you already have brew, update it:
<code>
brew update
</code></p>
<p><strong>Step 2.</strong> Install Java 8 JDK:
<code>
brew tap caskroom/versions
brew cask install java8
</code></p>
<p><strong>Step 3.</strong> Install maven:
<code>
brew install maven
</code></p>
<p><strong>Step 4.</strong> Install OpenCV:
<code>
brew install opencv
</code></p>
<h3 id="ubuntu-prerequisites-setup">Ubuntu Prerequisites Setup</h3>
<p><strong>Step 1.</strong>: Download the MXNet source.</p>
<div class="highlight"><pre><code class="language-bash" data-lang="bash">git clone <span class="nt">--recursive</span> https://github.com/apache/incubator-mxnet.git mxnet
<span class="nb">cd </span>mxnet
</code></pre></div>
<p><strong>Step 2.</strong>: Run the dependency installation scripts.</p>
<div class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="nb">sudo</span> ./ci/docker/install/ubuntu_core.sh
<span class="nb">sudo</span> ./ci/docker/install/ubuntu_scala.sh
</code></pre></div>
<h2 id="access-the-maven-package-for-mxnet">Access the Maven Package for MXNet</h2>
<p>To view the latest Maven packages, you can check the Maven repository for the <code>org.apache.mxnet</code> packages.</p>
<ul>
<li> <a href="https://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.apache.mxnet%22">MXNet Maven Packages</a></li>
</ul>
<p>In the tutorial below, you will install the latest package at the time of this writing. You may find a different artifact for your specific operating system, or a newer one by reviewing what is currently available in the Maven repo.</p>
<p>The configuration you should update is in the pom file&#39;s dependency for MXNet:</p>
<div class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>org.apache.mxnet<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>mxnet-full_2.11-osx-x86_64-cpu<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;/dependency&gt;</span>
</code></pre></div>
<h2 id="set-up-your-project">Set Up Your Project</h2>
<p>Now that you&#39;ve installed your prerequisites, you are ready to setup IntelliJ and your first MXNet-Scala project!</p>
<p><strong>Step 1.</strong> Install and setup IntelliJ:
- When prompted for what to features to enable during IntelliJ&#39;s first startup, make sure you select Scala.</p>
<div class="highlight"><pre><code class="language-" data-lang="">- Install the plugin for IntelliJ IDE by following these steps:
</code></pre></div>
<p>On <strong>Menu</strong>, choose <strong>Preferences</strong>, choose <strong>Plugins</strong>, type <strong>Scala</strong>, and then choose <strong>Install</strong>. For further plugin help and instructions, refer to <a href="https://www.jetbrains.com/help/idea/scala.html">Scala plugin setup for IDE</a>.</p>
<p><strong>Step 2.</strong> Create a new project:</p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-welcome.png" alt="intellij welcome"></p>
<p>From the IntelliJ welcome screen, select &quot;Create New Project&quot;.</p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-type.png" alt="maven project type"></p>
<p>Choose the Maven project type.</p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-type-archetype-check.png" alt="maven project type - archetype"></p>
<p>Select the checkbox for <code>Create from archetype</code>.</p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-type-archetype-add.png" alt="maven project type - archetype"></p>
<p>Click the <code>Add Archetype</code> button, and add the following information to each field.</p>
<p><strong>GroupId</strong>
<code>
net.alchim31.maven
</code>
<strong>ArtifactId</strong>
<code>
scala-archetype-simple
</code>
<strong>Version</strong>
<code>
1.6
</code>
<strong>Repository</strong>
<code>
https://mvnrepository.com/artifact/net.alchim31.maven/scala-archetype-simple
</code></p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-type-archetype-add-confirm.png" alt="maven project type - archetype"></p>
<p>Click <code>Ok</code> to add the archetype, make sure it is selected from the list, and then click <code>Next</code>.</p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-metadata.png" alt="project metadata"></p>
<p>Set the project&#39;s metadata. For this tutorial, use the following:</p>
<p><strong>GroupId</strong>
<code>
mxnet
</code>
<strong>ArtifactId</strong>
<code>
scalaMXNet
</code>
<strong>Version</strong>
<code>
1.0-SNAPSHOT
</code></p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-properties.png" alt="project properties"></p>
<p>Review the project&#39;s properties. The settings can be left as their default.</p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-location.png" alt="project location"></p>
<p>Set the project&#39;s location. The rest of the settings can be left as their default.</p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-1.png" alt="project 1"></p>
<p>After clicking Finish, you will be presented with the project&#39;s first view.
The project&#39;s <code>pom.xml</code> will be open for editing.</p>
<p><strong>Step 3.</strong> Replace the pom file&#39;s content with the following code. Changes include:
- Project properties: <code>scala.version</code>, upgrading from <code>2.11.5</code> to <code>2.11.8</code>
- Project dependencies: adding the MXNet package from Maven and updating the dependency for JUnitRunner (specs2-junit_) and logging
- Build options: removing &#39;-make:transitive&#39;</p>
<div class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;project</span> <span class="na">xmlns=</span><span class="s">"http://maven.apache.org/POM/4.0.0"</span> <span class="na">xmlns:xsi=</span><span class="s">"http://www.w3.org/2001/XMLSchema-instance"</span> <span class="na">xsi:schemaLocation=</span><span class="s">"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"</span><span class="nt">&gt;</span>
<span class="nt">&lt;modelVersion&gt;</span>4.0.0<span class="nt">&lt;/modelVersion&gt;</span>
<span class="nt">&lt;groupId&gt;</span>mxnet<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>scalaMXNet<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>1.0-SNAPSHOT<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;name&gt;</span>${project.artifactId}<span class="nt">&lt;/name&gt;</span>
<span class="nt">&lt;description&gt;</span>My wonderful scala app<span class="nt">&lt;/description&gt;</span>
<span class="nt">&lt;inceptionYear&gt;</span>2018<span class="nt">&lt;/inceptionYear&gt;</span>
<span class="nt">&lt;licenses&gt;</span>
<span class="nt">&lt;license&gt;</span>
<span class="nt">&lt;name&gt;</span>Apache2<span class="nt">&lt;/name&gt;</span>
<span class="nt">&lt;url&gt;</span>https://mxnet.apache.org<span class="nt">&lt;/url&gt;</span>
<span class="nt">&lt;distribution&gt;</span>repo<span class="nt">&lt;/distribution&gt;</span>
<span class="nt">&lt;/license&gt;</span>
<span class="nt">&lt;/licenses&gt;</span>
<span class="nt">&lt;profiles&gt;</span>
<span class="nt">&lt;profile&gt;</span>
<span class="nt">&lt;id&gt;</span>osx-x86_64-cpu<span class="nt">&lt;/id&gt;</span>
<span class="nt">&lt;properties&gt;</span>
<span class="nt">&lt;platform&gt;</span>osx-x86_64-cpu<span class="nt">&lt;/platform&gt;</span>
<span class="nt">&lt;/properties&gt;</span>
<span class="nt">&lt;/profile&gt;</span>
<span class="nt">&lt;profile&gt;</span>
<span class="nt">&lt;id&gt;</span>linux-x86_64-cpu<span class="nt">&lt;/id&gt;</span>
<span class="nt">&lt;properties&gt;</span>
<span class="nt">&lt;platform&gt;</span>linux-x86_64-cpu<span class="nt">&lt;/platform&gt;</span>
<span class="nt">&lt;/properties&gt;</span>
<span class="nt">&lt;/profile&gt;</span>
<span class="nt">&lt;profile&gt;</span>
<span class="nt">&lt;id&gt;</span>linux-x86_64-gpu<span class="nt">&lt;/id&gt;</span>
<span class="nt">&lt;properties&gt;</span>
<span class="nt">&lt;platform&gt;</span>linux-x86_64-gpu<span class="nt">&lt;/platform&gt;</span>
<span class="nt">&lt;/properties&gt;</span>
<span class="nt">&lt;/profile&gt;</span>
<span class="nt">&lt;/profiles&gt;</span>
<span class="nt">&lt;properties&gt;</span>
<span class="nt">&lt;maven</span><span class="err">.</span><span class="na">compiler</span><span class="err">.</span><span class="na">source</span><span class="nt">&gt;</span>1.6<span class="nt">&lt;/maven</span><span class="err">.compiler.source</span><span class="nt">&gt;</span>
<span class="nt">&lt;maven</span><span class="err">.</span><span class="na">compiler</span><span class="err">.</span><span class="na">target</span><span class="nt">&gt;</span>1.6<span class="nt">&lt;/maven</span><span class="err">.compiler.target</span><span class="nt">&gt;</span>
<span class="nt">&lt;encoding&gt;</span>UTF-8<span class="nt">&lt;/encoding&gt;</span>
<span class="nt">&lt;scala</span><span class="err">.</span><span class="na">version</span><span class="nt">&gt;</span>2.11.8<span class="nt">&lt;/scala</span><span class="err">.version</span><span class="nt">&gt;</span>
<span class="nt">&lt;scala</span><span class="err">.</span><span class="na">compat</span><span class="err">.</span><span class="na">version</span><span class="nt">&gt;</span>2.11<span class="nt">&lt;/scala</span><span class="err">.compat.version</span><span class="nt">&gt;</span>
<span class="nt">&lt;slf4jVersion&gt;</span>1.7.7<span class="nt">&lt;/slf4jVersion&gt;</span>
<span class="nt">&lt;platform&gt;</span>osx-x86_64-cpu<span class="nt">&lt;/platform&gt;</span>
<span class="nt">&lt;/properties&gt;</span>
<span class="nt">&lt;dependencies&gt;</span>
<span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>org.apache.mxnet<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>mxnet-full_2.11-osx-x86_64-cpu<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>[1.4.0,)<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;/dependency&gt;</span>
<span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>org.scala-lang<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>scala-library<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>${scala.version}<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;/dependency&gt;</span>
<span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>args4j<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>args4j<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>2.0.29<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;/dependency&gt;</span>
<span class="c">&lt;!-- Test --&gt;</span>
<span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>junit<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>junit<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>4.11<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;scope&gt;</span>test<span class="nt">&lt;/scope&gt;</span>
<span class="nt">&lt;/dependency&gt;</span>
<span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>org.specs2<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>specs2-junit_${scala.compat.version}<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>2.4.16<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;scope&gt;</span>test<span class="nt">&lt;/scope&gt;</span>
<span class="nt">&lt;/dependency&gt;</span>
<span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>org.scalatest<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>scalatest_${scala.compat.version}<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>2.2.4<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;scope&gt;</span>test<span class="nt">&lt;/scope&gt;</span>
<span class="nt">&lt;/dependency&gt;</span>
<span class="c">&lt;!-- Logging --&gt;</span>
<span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>org.slf4j<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>slf4j-api<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>${slf4jVersion}<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;/dependency&gt;</span>
<span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>org.slf4j<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>slf4j-log4j12<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>${slf4jVersion}<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;/dependency&gt;</span>
<span class="nt">&lt;/dependencies&gt;</span>
<span class="nt">&lt;build&gt;</span>
<span class="nt">&lt;sourceDirectory&gt;</span>src/main/scala<span class="nt">&lt;/sourceDirectory&gt;</span>
<span class="nt">&lt;testSourceDirectory&gt;</span>src/test/scala<span class="nt">&lt;/testSourceDirectory&gt;</span>
<span class="nt">&lt;plugins&gt;</span>
<span class="nt">&lt;plugin&gt;</span>
<span class="c">&lt;!-- see http://davidb.github.com/scala-maven-plugin --&gt;</span>
<span class="nt">&lt;groupId&gt;</span>net.alchim31.maven<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>scala-maven-plugin<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>3.2.0<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;executions&gt;</span>
<span class="nt">&lt;execution&gt;</span>
<span class="nt">&lt;goals&gt;</span>
<span class="nt">&lt;goal&gt;</span>compile<span class="nt">&lt;/goal&gt;</span>
<span class="nt">&lt;goal&gt;</span>testCompile<span class="nt">&lt;/goal&gt;</span>
<span class="nt">&lt;/goals&gt;</span>
<span class="nt">&lt;configuration&gt;</span>
<span class="nt">&lt;args&gt;</span>
<span class="c">&lt;!--arg&gt;-make:transitive&lt;/arg--&gt;</span>
<span class="nt">&lt;arg&gt;</span>-dependencyfile<span class="nt">&lt;/arg&gt;</span>
<span class="nt">&lt;arg&gt;</span>${project.build.directory}/.scala_dependencies<span class="nt">&lt;/arg&gt;</span>
<span class="nt">&lt;/args&gt;</span>
<span class="nt">&lt;/configuration&gt;</span>
<span class="nt">&lt;/execution&gt;</span>
<span class="nt">&lt;/executions&gt;</span>
<span class="nt">&lt;/plugin&gt;</span>
<span class="nt">&lt;plugin&gt;</span>
<span class="nt">&lt;groupId&gt;</span>org.apache.maven.plugins<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>maven-surefire-plugin<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>2.18.1<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;configuration&gt;</span>
<span class="nt">&lt;useFile&gt;</span>false<span class="nt">&lt;/useFile&gt;</span>
<span class="nt">&lt;disableXmlReport&gt;</span>true<span class="nt">&lt;/disableXmlReport&gt;</span>
<span class="c">&lt;!-- If you have classpath issue like NoDefClassError,... --&gt;</span>
<span class="c">&lt;!-- useManifestOnlyJar&gt;false&lt;/useManifestOnlyJar --&gt;</span>
<span class="nt">&lt;includes&gt;</span>
<span class="nt">&lt;include&gt;</span>**/*Test.*<span class="nt">&lt;/include&gt;</span>
<span class="nt">&lt;include&gt;</span>**/*Suite.*<span class="nt">&lt;/include&gt;</span>
<span class="nt">&lt;/includes&gt;</span>
<span class="nt">&lt;/configuration&gt;</span>
<span class="nt">&lt;/plugin&gt;</span>
<span class="nt">&lt;/plugins&gt;</span>
<span class="nt">&lt;/build&gt;</span>
<span class="nt">&lt;/project&gt;</span>
</code></pre></div>
<p><strong>Step 4.</strong> Import dependencies with Maven:</p>
<ul>
<li>Note the prompt in the lower right corner that states &quot;Maven projects need to be imported&quot;. If this is not visible, click on the little greed balloon that appears in the lower right corner.</li>
</ul>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-import-changes.gif" alt="import dependencies"></p>
<p>Click &quot;Import Changes&quot; in this prompt.</p>
<p><strong>Step 5.</strong> Setup log4j configuration</p>
<p>Create a folder <code>src/main/resources</code> and a new file in it <code>src/main/resources/log4j.properties</code> with the contents:</p>
<div class="highlight"><pre><code class="language-" data-lang="">log4j.rootLogger = info, stdout
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] [%c] [%p] - %m%n
</code></pre></div>
<p><strong>Step 6.</strong> Build the project:
- To build the project, from the menu choose Build, and then choose Build Project.
* Note that if you run into <code>bad option: &#39;-make:transitive&#39;</code>, please remove <code>&lt;arg&gt;-make:transitive&lt;/arg&gt;</code> from <code>pom.xml</code> and <code>&lt;parameter value=&quot;-make:transitive&quot; /&gt;</code> from <code>.idea/scala_compiler</code>.</p>
<p><strong>Step 7.</strong> Run the Hello World App:</p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-hello-world-app.png" alt="hello world app"></p>
<p>Navigate to the App included with the project.</p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-hello-world-run.png" alt="run hello world"></p>
<p>Run the App by clicking the green arrow, and verify the Hello World output</p>
<p><strong>Step 8.</strong> Run Sample MXNet Code in the App:</p>
<p><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/scala/intellij-project-hello-mxnet.png" alt="run hello mxnet"></p>
<p>Paste the following code in the App, overwriting the original hello world code. Then click the green arrow to run it.</p>
<div class="highlight"><pre><code class="language-scala" data-lang="scala"><span class="k">object</span> <span class="nc">App</span> <span class="k">extends</span> <span class="nc">App</span> <span class="o">{</span>
<span class="k">import</span> <span class="nn">org.apache.mxnet._</span>
<span class="k">private</span> <span class="k">val</span> <span class="nv">a</span> <span class="k">=</span> <span class="nv">NDArray</span><span class="o">.</span><span class="py">ones</span><span class="o">(</span><span class="mi">2</span><span class="o">,</span> <span class="mi">3</span><span class="o">)</span>
<span class="nf">println</span><span class="o">(</span><span class="s">"Testing MXNet by generating an 2x3 NDArray..."</span><span class="o">)</span>
<span class="nf">println</span><span class="o">(</span><span class="s">"Shape is: "</span><span class="o">)</span>
<span class="nf">println</span><span class="o">(</span><span class="nv">a</span><span class="o">.</span><span class="py">shape</span><span class="o">)</span>
<span class="o">}</span>
</code></pre></div>
<p>The result should be this output:</p>
<div class="highlight"><pre><code class="language-" data-lang="">Testing MXNet by generating an 2x3 NDArray...
Shape is:
(2,3)
Process finished with exit code 0
</code></pre></div>
<h3 id="troubleshooting">Troubleshooting</h3>
<p>If you get an error, check the dependencies at the beginning of this tutorial. For example, you might see the following in the middle of the error messages, where <code>x.x</code> would the version it&#39;s looking for.</p>
<div class="highlight"><pre><code class="language-" data-lang="">...
Library not loaded: /usr/local/opt/opencv/lib/libopencv_calib3d.x.x.dylib
...
</code></pre></div>
<p>This can be resolved be installing OpenCV.</p>
<h3 id="using-mxnet-from-source">Using MXNet from source</h3>
<p>If you chose to &quot;Build from Source&quot; when following the <a href="/versions/1.8.0/get_started">install instructions</a> (or the detailed <a href="/versions/1.8.0/get_started/build_from_source.html#installing-mxnet-language-bindings">build from source instructions</a>), you can use your custom build instead of the build from maven. Use your build by editing the <code>pom.xml</code> file and replacing the <code>org.apache.mxnet</code> dependency with the following:</p>
<div class="highlight"><pre><code class="language-" data-lang=""> &lt;groupId&gt;org.apache.mxnet&lt;/groupId&gt;
&lt;artifactId&gt;mxnet-core_${scala.version}-${platform}-sources&lt;/artifactId&gt;
&lt;scope&gt;system&lt;/scope&gt;
&lt;systemPath&gt;/PathToMXNetSource/incubator-mxnet/scala-package/assembly/osx-x86_64-cpu/target/mxnet-full_${scala.version}-osx-x86_64-cpu-1.8.0-SNAPSHOT-sources.jar&lt;/systemPath&gt;
&lt;/dependency&gt;
&lt;dependency&gt;
&lt;groupId&gt;org.apache.mxnet&lt;/groupId&gt;
&lt;artifactId&gt;mxnet-full_${scala.version}-${platform}&lt;/artifactId&gt;
&lt;scope&gt;system&lt;/scope&gt;
&lt;systemPath&gt;/PathToMXNetSource/incubator-mxnet/scala-package/assembly/osx-x86_64-cpu/target/mxnet-full_${scala.version}-osx-x86_64-cpu-1.8.0-SNAPSHOT.jar&lt;/systemPath&gt;
&lt;/dependency&gt;
</code></pre></div>
<p>Note that you have to edit both of the <code>systemPath</code> properties to point to your generated jar files.</p>
<h3 id="command-line-build-option">Command Line Build Option</h3>
<ul>
<li>You can also compile the project by using the following command at the command line. Change directories to this project&#39;s folder then run the following:</li>
</ul>
<div class="highlight"><pre><code class="language-bash" data-lang="bash">mvn clean package <span class="nt">-e</span> <span class="nt">-P</span> osx-x86_64-cpu
</code></pre></div>
<p>The <code>-P &lt;platform&gt;</code> parameter tells the build which platform to target.
The <code>-e</code> will give you more details if the build fails. If it succeeds, you should see a lot of info and some warning messages, followed by:</p>
<div class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="o">[</span>INFO] <span class="nt">------------------------------------------------------------------------</span>
<span class="o">[</span>INFO] BUILD SUCCESS
<span class="o">[</span>INFO] <span class="nt">------------------------------------------------------------------------</span>
<span class="o">[</span>INFO] Total <span class="nb">time</span>: 1.186 s
<span class="o">[</span>INFO] Finished at: 2018-03-06T15:17:36-08:00
<span class="o">[</span>INFO] Final Memory: 11M/155M
<span class="o">[</span>INFO] <span class="nt">------------------------------------------------------------------------</span>
</code></pre></div>
<p>The build generates a new jar file in the <code>target</code> folder called <code>scalaInference-1.0-SNAPSHOT.jar</code>.</p>
<h2 id="next-steps">Next Steps</h2>
<p>For more information about MXNet Scala resources, see the following:</p>
<ul>
<li><a href="/versions/1.8.0/api/scala">Scala API</a></li>
<li><a href="https://github.com/apache/incubator-mxnet/tree/master/scala-package/examples/">Scala Examples</a></li>
<li><a href="/versions/1.8.0/api">MXNet Tutorials Index</a></li>
</ul>
</div>
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<p>Apache MXNet is an effort undergoing incubation at The Apache Software Foundation (ASF), <span
style="font-weight:bold">sponsored by the <i>Apache Incubator</i></span>. Incubation is required
of all newly accepted projects until a further review indicates that the infrastructure,
communications, and decision making process have stabilized in a manner consistent with other
successful ASF projects. While incubation status is not necessarily a reflection of the completeness
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</p><p>"Copyright © 2017-2018, The Apache Software Foundation Apache MXNet, MXNet, Apache, the Apache
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