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ncoghlan merged 1 commit into from
Jun 12, 2017
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bpo-23404: make regen-all What's New entry #2128

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36 changes: 36 additions & 0 deletions Doc/whatsnew/3.6.rst
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Expand Up @@ -2306,3 +2306,39 @@ There have been several major changes to the :term:`bytecode` in Python 3.6.
* The new :opcode:`SETUP_ANNOTATIONS` and :opcode:`STORE_ANNOTATION` opcodes
have been added to support the new :term:`variable annotation` syntax.
(Contributed by Ivan Levkivskyi in :issue:`27985`.)


Notable changes in Python 3.6.2
===============================

New ``make regen-all`` build target
-----------------------------------

To simplify cross-compilation, and to ensure that CPython can reliably be
compiled without requiring an existing version of Python to already be
available, the autotools-based build system no longer attempts to implicitly
recompile generated files based on file modification times.

Instead, a new ``make regen-all`` command has been added to force regeneration
of these files when desired (e.g. after an initial version of Python has
already been built based on the pregenerated versions).

More selective regeneration targets are also defined - see
:source:`Makefile.pre.in` for details.

(Contributed by Victor Stinner in :issue:`23404`.)

.. versionadded:: 3.6.2
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@vstinner vstinner Jun 12, 2017

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Hum, it's more versionchanged than versonadded, no?

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@ncoghlan ncoghlan Jun 12, 2017

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regen-all is genuinely new, and attempting to use it on 3.6.0 or 3.61 will straight-up fail, so "added" seemed appropriate. I did use a "changed" marker on ``touch`, though (since we don't have a "removed" marker).



Removal of ``make touch`` build target
--------------------------------------

The ``make touch`` build target previously used to request implicit regeneration
of generated files by updating their modification times has been removed.

It has been replaced by the new ``make regen-all`` target.

(Contributed by Victor Stinner in :issue:`23404`.)

.. versionchanged:: 3.6.2