Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Revert "[Docs] Add release note about Clang-defined target OS macros … #80045

Merged
merged 1 commit into from
Feb 21, 2024
Merged

Revert "[Docs] Add release note about Clang-defined target OS macros … #80045

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
26 changes: 0 additions & 26 deletions clang/docs/ReleaseNotes.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -62,21 +62,6 @@ Clang Frontend Potentially Breaking Changes
of ``-Wno-gnu-binary-literal`` will no longer silence this pedantic warning,
which may break existing uses with ``-Werror``.

Target OS macros extension
^^^^^^^^^^^^^^^^^^^^^^^^^^
A new Clang extension (see :ref:`here <target_os_detail>`) is enabled for
Darwin (Apple platform) targets. Clang now defines ``TARGET_OS_*`` macros for
these targets, which could break existing code bases with improper checks for
the ``TARGET_OS_`` macros. For example, existing checks might fail to include
the ``TargetConditionals.h`` header from Apple SDKs and therefore leaving the
macros undefined and guarded code unexercised.

Affected code should be checked to see if it's still intended for the specific
target and fixed accordingly.

The extension can be turned off by the option ``-fno-define-target-os-macros``
as a workaround.

What's New in Clang |release|?
==============================
Some of the major new features and improvements to Clang are listed
Expand Down Expand Up @@ -161,17 +146,6 @@ Non-comprehensive list of changes in this release
New Compiler Flags
------------------

.. _target_os_detail:

Target OS macros extension
^^^^^^^^^^^^^^^^^^^^^^^^^^
A pair of new flags ``-fdefine-target-os-macros`` and
``-fno-define-target-os-macros`` has been added to Clang to enable/disable the
extension to provide built-in definitions of a list of ``TARGET_OS_*`` macros
based on the target triple.

The extension is enabled by default for Darwin (Apple platform) targets.

Deprecated Compiler Flags
-------------------------

Expand Down
Loading