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Diffstat (limited to 'lib/spack/docs/packaging_guide.rst')
| -rw-r--r-- | lib/spack/docs/packaging_guide.rst | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/lib/spack/docs/packaging_guide.rst b/lib/spack/docs/packaging_guide.rst index 1505b9a097..5adb996232 100644 --- a/lib/spack/docs/packaging_guide.rst +++ b/lib/spack/docs/packaging_guide.rst @@ -410,6 +410,8 @@ For tarball downloads, Spack can currently support checksums using the MD5, SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512 algorithms. It determines the algorithm to use based on the hash length. +.. _versions-and-fetching: + --------------------- Versions and fetching --------------------- @@ -3290,7 +3292,17 @@ Within directives each of the names above can be used to match a particular targ # This patch is only applied on icelake microarchitectures patch("icelake.patch", when="target=icelake") -in a similar way to what we have seen before for ``platform`` and ``os``. +It's also possible to select all the architectures belonging to the same family +using an open range: + +.. code-block:: python + + class Julia(Package): + # This patch is applied on all x86_64 microarchitectures. + # The trailing colon that denotes an open range of targets + patch("generic_x86_64.patch", when="target=x86_64:") + +in a way that resembles what was shown in :ref:`versions-and-fetching` for versions. Where ``target`` objects really shine though is when they are used in methods called at configure, build or install time. In that case we can test targets for supported features, for instance: |