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<h2 id="installing-newt-on-mac-os">Installing Newt on Mac OS</h2>
<p>Newt is supported on Mac OS X 64 bit platforms and has been tested on Mac OS Sierra.</p>
<p>This page shows you how to install the following versions of newt:</p>
<ul>
<li>Upgrade to or install the latest release version (1.4.0).</li>
<li>Install the latest from the master branch (unstable).</li>
</ul>
<p>See <a href="/newt/install/prev_releases">Installing Previous Releases of Newt</a> to install an earlier version of newt.</p>
<p><strong>Note:</strong> If you would like to contribute to the newt tool, see <a href="/faq/go_env">Setting Up Go Environment to Contribute to Newt and Newtmgr Tools</a>.</p>
<h3 id="installing-homebrew">Installing Homebrew</h3>
<p>If you do not have Homebrew installed, run the following command. You will be prompted for your sudo password.</p>
<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code>$ ruby -e &quot;$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)&quot;
</code></pre></div>
<p>You can also extract (or <code>git clone</code>) Homebrew and install it to /usr/local.</p>
<h3 id="adding-the-mynewt-homebrew-tap">Adding the Mynewt Homebrew Tap</h3>
<p>If this is your first time installing newt, add the <strong>runtimeco/homebrew-mynewt</strong> tap:</p>
<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code>$ brew tap runtimeco/homebrew-mynewt
$ brew update
</code></pre></div>
<h3 id="upgrading-to-or-installing-the-latest-release-version">Upgrading to or Installing the Latest Release Version</h3>
<p>Perform the following to upgrade or install the latest release version of newt.</p>
<h4 id="upgrading-to-the-latest-release-version-of-newt">Upgrading to the Latest Release Version of Newt</h4>
<p>If you have installed an earlier version of newt using brew, run the following commands to upgrade to latest version of newt:</p>
<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code>$ brew update
$ brew upgrade mynewt-newt
</code></pre></div>
<p><br></p>
<h4 id="installing-the-latest-release-version-of-newt">Installing the Latest Release Version of Newt</h4>
<p>Run the following command to install the latest release version of newt:</p>
<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code>$ brew update
$ brew install mynewt-newt
</code></pre></div>
<p><br>
<strong>Notes:</strong> Homebrew bottles for newt are available for Mac OS Sierra. If you are running an earlier version of Mac OS, the installation will install the latest version of Go and compile newt locally.</p>
<p><br></p>
<h3 id="checking-the-installed-version">Checking the Installed Version</h3>
<p>Check that you are using the installed version of newt:</p>
<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code>$ which newt
/usr/local/bin/newt
$ newt version
Apache Newt version: 1.4.0
</code></pre></div>
<p><strong>Note:</strong> If you previously built newt from source and the output of <code>which newt</code> shows "$GOPATH/bin/newt", you will need to move "$GOPATH/bin" after "/usr/local/bin" for your PATH in ~/.bash_profile, and source ~/.bash_profile. </p>
<p><br>
Get information about newt: </p>
<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code>$ newt help
Newt allows you to create your own embedded application based on the Mynewt
operating system. Newt provides both build and package management in a single
tool, which allows you to compose an embedded application, and set of
projects, and then build the necessary artifacts from those projects. For more
information on the Mynewt operating system, please visit
https://mynewt.apache.org/.
Please use the newt help command, and specify the name of the command you want
help for, for help on how to use a specific command
Usage:
newt [flags]
newt [command]
Examples:
newt
newt help [&lt;command-name&gt;]
For help on &lt;command-name&gt;. If not specified, print this message.
Available Commands:
build Build one or more targets
clean Delete build artifacts for one or more targets
create-image Add image header to target binary
debug Open debugger session to target
info Show project info
install Install project dependencies
load Load built target to board
mfg Manufacturing flash image commands
new Create a new project
pkg Create and manage packages in the current workspace
resign-image Re-sign an image.
run build/create-image/download/debug &lt;target&gt;
size Size of target components
sync Synchronize project dependencies
target Commands to create, delete, configure, and query targets
test Executes unit tests for one or more packages
upgrade Upgrade project dependencies
vals Display valid values for the specified element type(s)
version Display the Newt version number
Flags:
-h, --help Help for newt commands
-j, --jobs int Number of concurrent build jobs (default 8)
-l, --loglevel string Log level (default &quot;WARN&quot;)
-o, --outfile string Filename to tee output to
-q, --quiet Be quiet; only display error output
-s, --silent Be silent; don&#39;t output anything
-v, --verbose Enable verbose output when executing commands
Use &quot;newt [command] --help&quot; for more information about a command.
</code></pre></div>
<p><br></p>
<h3 id="installing-newt-from-the-master-branch">Installing Newt from the Master Branch</h3>
<p>We recommend that you use the latest release version of newt. If you would like to use the master branch with the latest updates, you can install newt from the HEAD of the master branch. </p>
<p>** Notes: **</p>
<ul>
<li>The master branch may be unstable.</li>
<li>This installation will install the latest version of Go on your computer, if it is not installed, and compile newt locally.</li>
</ul>
<p><br>
If you previously installed newt using brew, unlink the current version:</p>
<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code>$ brew unlink mynewt-newt
</code></pre></div>
<p><br>
Install the latest unstable version of newt from the master branch:</p>
<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code>$ brew install mynewt-newt --HEAD
</code></pre></div>
<p><br>
To switch back to the latest stable release version of newt, you can run:</p>
<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code>$ brew switch mynewt-newt 1.4.0
</code></pre></div>
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