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Getting Started
====================
Download
--------------------
Getting spack is easy. You can clone it from the `github repository
<https://github.com/llnl/spack>`_ using this command:
.. code-block:: sh
$ git clone https://github.com/llnl/spack.git
This will create a directory called ``spack``. We'll assume that the
full path to this directory is in the ``SPACK_ROOT`` environment
variable. Add ``$SPACK_ROOT/bin`` to your path and you're ready to
go:
.. code-block:: sh
$ export PATH=$SPACK_ROOT/bin:$PATH
$ spack install libelf
For a richer experience, use Spack's `shell support
<http://llnl.github.io/spack/basic_usage.html#environment-modules>`_:
.. code-block:: sh
# For bash users
$ . $SPACK_ROOT/share/spack/setup-env.sh
# For tcsh or csh users (note you must set SPACK_ROOT)
$ setenv SPACK_ROOT /path/to/spack
$ source $SPACK_ROOT/share/spack/setup-env.csh
This automatically adds Spack to your ``PATH``.
Installation
--------------------
You don't need to install Spack; it's ready to run as soon as you
clone it from git.
You may want to run it out of a prefix other than the git repository
you cloned. The ``spack bootstrap`` command provides this
functionality. To install spack in a new directory, simply type:
.. code-block:: sh
$ spack bootstrap /my/favorite/prefix
This will install a new spack script in ``/my/favorite/prefix/bin``,
which you can use just like you would the regular spack script. Each
copy of spack installs packages into its own ``$PREFIX/opt``
directory.
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