54 lines
2.4 KiB
Markdown
54 lines
2.4 KiB
Markdown
---
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date: "2014-04-12T21:25:00Z"
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description: Short description of how to install Erlang/OTP 17.0 using kerl on Mac OS X.
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tags:
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- erlang
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- programming
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- english
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slug: installing-erlang-17-0-using-kerl
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title: Installing Erlang 17.0 On Mac OS X
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---
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It's been a few days since [Erlang/OTP 17.0](http://www.erlang.org/news/73) has been released. Installing 64 Bit Erlang (with [Observer](http://www.erlang.org/doc/man/observer.html) support) on Mac OS X has always been a bit tricky, but with 17.0 it has gotten significantly easier.
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First you need to install/get some prerequisites:
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* [Command Line Tools for Xcode](https://developer.apple.com/downloads) or [Xcode](http://itunes.apple.com/us/app/xcode/id497799835)
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* [Homebrew](http://brew.sh)
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* [kerl](https://github.com/spawngrid/kerl)
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After you've gotten these three, we start by installing *wxWidgets*. It's required in order to use the Observer GUI.
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{{< highlight bash >}}
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brew install wxmac
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{{< / highlight >}}
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Compiling *wxWidgets* might take some time. After it's done, you should create a `~/.kerlrc` file. It's basically a configuration file for *kerl*, which will be used for every Erlang version you compile. You can find the list of available options in the [*kerl* readme](https://github.com/spawngrid/kerl#tuning). Mine looks like this:
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{{< highlight bash "linenos=table" >}}
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CPPFLAGS="-march=native -mtune=native -O3 -g"
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KERL_CONFIGURE_OPTIONS="--disable-debug --without-javac --enable-shared-zlib --enable-dynamic-ssl-lib --enable-smp-support --enable-threads --enable-hipe --enable-kernel-poll --enable-darwin-64bit --with-wx"
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KERL_DEFAULT_INSTALL_DIR="$KERL_BASE_DIR/installs"
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{{< / highlight >}}
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We can now move on to actually installing Erlang/OTP 17.0.
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{{< highlight bash >}}
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kerl update releases
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kerl build 17.0 17.0
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kerl install 17.0 17.0
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{{< / highlight >}}
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After the installation is finished, *kerl* will output instructions on how to enable a specific Erlang version globally. In general, you will put something like the following in your `~/.zshrc` or `~/.bash_profile`:
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{{< highlight bash >}}
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source $HOME/.kerl/installs/17.0/activate
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{{< / highlight >}}
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The following `alias` makes it easier to start the Observer from a terminal. The only command you have to remember is `erlobserver`.
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{{< highlight bash >}}
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alias erlobserver='erl -sname observer -run observer -detached'
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{{< / highlight >}}
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