The Amber CLI offers you a set of command line tools to create, generate, scaffold and run your projects quickly and simply.

Linux

Ensure you have the necessary dependencies:

• Git: Use your platform specific package manager to install git

• Crystal: Follow the instructions to get crystal on this page: Crystal Installation​

• NodeJS and Webpack: node is an optional dependency and is used to compile JavaScript and other assets.

• PostgreSQL: postgres is a relational database server. Amber configures applications to use this database adapter by default, but you can switch to MySQL by passing the flag --database mysql when creating a new application.

Once you have these dependencies, You can build the amber tool from source:

From Source

Download and install amber

curl -L https://github.com/amberframework/amber/archive/stable.tar.gz | tar xz
cd amber-stable/
make
sudo make install

If you run into an issue on compilation regarding Unhandled exception in spawn: fork: Cannot allocate memory it means you don't have enough memory. This can easily be solved by adding a swapfile.

sudo dd if=/dev/zero of=/swapfile bs=2k count=1024k
sudo mkswap /swapfile
sudo chmod 600 /swapfile
sudo swapon /swapfile

For Debian & Ubuntu

• These are necessary to compile the CLI:

• sudo apt-get install build-essential libreadline-dev libsqlite3-dev libpq-dev libmysqlclient-dev libssl-dev libyaml-dev

For RedHat & CentOS

• sudo yum groupinstall development tools

• sudo yum install readline-devel sqlite-devel openssl-devel libyaml-devel gc-devel libevent-devel

For ArchLinux & derivates

• Install the CLI from AUR package. Dependencies are automatically installed.

• yaourt -S amber

You should now be able to run amber in the command line.

macOS

Installing Amber with these package managers also installs Crystal.

• Homebrew

  brew tap amberframework/amber
  brew install amber

• MacPorts

  sudo port selfupdate
  sudo port install amber

From source

Known problems while trying to build Amber from source on macOS:

• If you see linker problems, such as ld: library not found for -lssl (this usually means you need to install the development package for libssl), you may need to set some (or all) of those environment variables:

  export PKG_CONFIG_PATH="/usr/local/opt/openssl/lib/pkgconfig"
  export LDFLAGS="-L/usr/local/opt/openssl/lib"
  export CPPFLAGS="-I/usr/local/opt/openssl/include"