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@kidlab
Forked from joakimk/README.md
Created Nov 6, 2016
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CircleCI elixir build example

This runs a build for a small elixir (phoenix) project in about 40 seconds by caching as much of the compiled files as possible.

We've been using this for months in multiple projects without any issues. Please ping be if there is any issues with this script and I'll update it.

It should be generic enough to work on any elixir app using mix.

If you have a elixir_buildpack.config, then enable that section in the build script to keep versions in sync!

2016-08-09: Updated to newer Erlang and Elixir and fixed curl command.

dependencies:
pre:
- script/ci/prepare.sh
cache_directories:
- ~/dependencies
- ~/.mix
- _build
- deps
test:
override:
- script/ci/tests.sh
#!/bin/bash
# NOTE: Keep in mind that this script does not verify the shasum of the downloads.
# NOTE: Don't forget to make this file executable or the build won't run
set -e
export ERLANG_VERSION="19.0"
export ELIXIR_VERSION="v1.3.2"
# If you have a elixir_buildpack.config, do this instead:
#export ERLANG_VERSION=$(cat elixir_buildpack.config | grep erlang_version | tr "=" " " | awk '{ print $2 }')
#export ELIXIR_VERSION=v$(cat elixir_buildpack.config | grep elixir_version | tr "=" " " | awk '{ print $2 }')
export INSTALL_PATH="$HOME/dependencies"
export ERLANG_PATH="$INSTALL_PATH/otp_src_$ERLANG_VERSION"
export ELIXIR_PATH="$INSTALL_PATH/elixir_$ELIXIR_VERSION"
mkdir -p $INSTALL_PATH
cd $INSTALL_PATH
# Install erlang
if [ ! -e $ERLANG_PATH/bin/erl ]; then
curl -L -O http://www.erlang.org/download/otp_src_$ERLANG_VERSION.tar.gz
tar xzf otp_src_$ERLANG_VERSION.tar.gz
cd $ERLANG_PATH
./configure --enable-smp-support \
--enable-m64-build \
--disable-native-libs \
--disable-sctp \
--enable-threads \
--enable-kernel-poll \
--disable-hipe \
--without-javac
make
# Symlink to make it easier to setup PATH to run tests
ln -sf $ERLANG_PATH $INSTALL_PATH/erlang
fi
# Install elixir
export PATH="$ERLANG_PATH/bin:$PATH"
if [ ! -e $ELIXIR_PATH/bin/elixir ]; then
git clone https://github.com/elixir-lang/elixir $ELIXIR_PATH
cd $ELIXIR_PATH
git checkout $ELIXIR_VERSION
make
# Symlink to make it easier to setup PATH to run tests
ln -sf $ELIXIR_PATH $INSTALL_PATH/elixir
fi
export PATH="$ERLANG_PATH/bin:$ELIXIR_PATH/bin:$PATH"
# Install package tools
if [ ! -e $HOME/.mix/rebar ]; then
yes Y | LC_ALL=en_GB.UTF-8 mix local.hex
yes Y | LC_ALL=en_GB.UTF-8 mix local.rebar
fi
# If you use Elm:
# 1) add the code below
# 2) run the Elm build like this " ~/dependencies/sysconfcpus/bin/sysconfcpus -n 2 node_modules/brunch/bin/brunch build"
# 3) your Elm builds will finish in seconds instead of minutes
#
# For more info see: https://github.com/elm-lang/elm-compiler/issues/1473#issuecomment-245704142
#if [ ! -d $INSTALL_PATH/sysconfcpus/bin ]; then
# git clone https://github.com/obmarg/libsysconfcpus.git
# cd libsysconfcpus
# ./configure --prefix=$INSTALL_PATH/sysconfcpus
# make && make install
# cd ..
#fi
# Fetch and compile dependencies and application code (and include testing tools)
export MIX_ENV="test"
cd $HOME/$CIRCLE_PROJECT_REPONAME
mix do deps.get, deps.compile, compile
#!/bin/bash
export MIX_ENV="test"
export PATH="$HOME/dependencies/erlang/bin:$HOME/dependencies/elixir/bin:$PATH"
mix test
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