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Identify the flag handlers feature as beta (#5609)

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The flag-handling logic added in #4421 may change semantics, so this
commit adds a warning to the documentation for this feature.
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becker33 2017-10-04 18:32:13 -07:00 committed by scheibelp
parent 328ab328be
commit 04a4ac68d5
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lib/spack/docs/packaging_guide.rst
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@ -2572,6 +2572,11 @@ passes those flags to the relevant environment variables (``CFLAGS``,
packages, the default behavior is to inject the flags directly into the
compiler commands using Spack's compiler wrappers.
.. warning::
The flag handling methods described in this section are in beta.
The exact semantics are liable to change to improve usability.
Individual packages can override the default behavior for the flag
handling. Packages can define a ``default_flag_handler`` method that
applies to all sets of flags handled by Spack, or may define