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Diffstat (limited to 'lib/spack/docs/getting_started.rst')
| -rw-r--r-- | lib/spack/docs/getting_started.rst | 47 |
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diff --git a/lib/spack/docs/getting_started.rst b/lib/spack/docs/getting_started.rst index 6f3340b18b..260dc25c51 100644 --- a/lib/spack/docs/getting_started.rst +++ b/lib/spack/docs/getting_started.rst @@ -111,6 +111,53 @@ environment*, especially for ``PATH``. Only software that comes with the system, or that you know you wish to use with Spack, should be included. This procedure will avoid many strange build errors. +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +Optional: Bootstrapping clingo +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Spack supports using clingo as an external solver to compute which software +needs to be installed. If you have a default compiler supporting C++14 Spack +can automatically bootstrap this tool from sources the first time it is +needed: + +.. code-block:: console + + $ spack solve zlib + [+] /usr (external bison-3.0.4-wu5pgjchxzemk5ya2l3ddqug2d7jv6eb) + [+] /usr (external cmake-3.19.4-a4kmcfzxxy45mzku4ipmj5kdiiz5a57b) + [+] /usr (external python-3.6.9-x4fou4iqqlh5ydwddx3pvfcwznfrqztv) + ==> Installing re2c-1.2.1-e3x6nxtk3ahgd63ykgy44mpuva6jhtdt + [ ... ] + ==> Optimization: [0, 0, 0, 0, 0, 1, 0, 0, 0] + zlib@1.2.11%gcc@10.1.0+optimize+pic+shared arch=linux-ubuntu18.04-broadwell + +If you want to speed-up bootstrapping, you may try to search for ``cmake`` and ``bison`` +on your system: + +.. code-block:: console + + $ spack external find cmake bison + ==> The following specs have been detected on this system and added to /home/spack/.spack/packages.yaml + bison@3.0.4 cmake@3.19.4 + +All the tools Spack needs for its own functioning are installed in a separate store, which lives +under the ``${HOME}/.spack`` directory. The software installed there can be queried with: + +.. code-block:: console + + $ spack find --bootstrap + ==> Showing internal bootstrap store at "/home/spack/.spack/bootstrap/store" + ==> 3 installed packages + -- linux-ubuntu18.04-x86_64 / gcc@10.1.0 ------------------------ + clingo-bootstrap@spack python@3.6.9 re2c@1.2.1 + +In case it's needed the bootstrap store can also be cleaned with: + +.. code-block:: console + + $ spack clean -b + ==> Removing software in "/home/spack/.spack/bootstrap/store" + ^^^^^^^^^^^^^^^^^^^^^^^^^^ Optional: Alternate Prefix ^^^^^^^^^^^^^^^^^^^^^^^^^^ |