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Bootstrap clingo from sources (#21446)

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* Allow the bootstrapping of clingo from sources

Allow python builds with system python as external
for MacOS

* Ensure consistent configuration when bootstrapping clingo

This commit uses context managers to ensure we can
bootstrap clingo using a consistent configuration
regardless of the use case being managed.

* Github actions: test clingo with bootstrapping from sources

* Add command to inspect and clean the bootstrap store

 Prevent users to set the install tree root to the bootstrap store

* clingo: documented how to bootstrap from sources

Co-authored-by: Gregory Becker <becker33@llnl.gov>
This commit is contained in:
Massimiliano Culpo
2021-03-03 18:37:46 +01:00
committed by GitHub
parent 6d54df1ba4
commit 10e9e142b7
12 changed files with 359 additions and 44 deletions
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47
lib/spack/docs/getting_started.rst
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@@ -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
^^^^^^^^^^^^^^^^^^^^^^^^^^