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docs: programming-languages: refresh blurb on clang support

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Building the kernel with Clang doesn't rely on third party patches, and
has not for a few years now.

Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Link: https://lore.kernel.org/r/20200929211936.580805-1-ndesaulniers@google.com
[jc: Took out duplicated "docs" pointed out by Randy]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Nick Desaulniers
2020-09-29 14:19:35 -07:00
committed by Jonathan Corbet
parent f42182945d
commit 905705a8fd
1 changed files with 5 additions and 4 deletions
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9
Documentation/process/programming-language.rst
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@@ -6,14 +6,15 @@ Programming Language
The kernel is written in the C programming language [c-language]_. The kernel is written in the C programming language [c-language]_.
More precisely, the kernel is typically compiled with ``gcc`` [gcc]_ More precisely, the kernel is typically compiled with ``gcc`` [gcc]_
under ``-std=gnu89`` [gcc-c-dialect-options]_: the GNU dialect of ISO C90 under ``-std=gnu89`` [gcc-c-dialect-options]_: the GNU dialect of ISO C90
(including some C99 features). (including some C99 features). ``clang`` [clang]_ is also supported, see
docs on :ref:`Building Linux with Clang/LLVM <kbuild_llvm>`.
This dialect contains many extensions to the language [gnu-extensions]_, This dialect contains many extensions to the language [gnu-extensions]_,
and many of them are used within the kernel as a matter of course. and many of them are used within the kernel as a matter of course.
There is some support for compiling the kernel with ``clang`` [clang]_ There is some support for compiling the kernel with ``icc`` [icc]_ for several
and ``icc`` [icc]_ for several of the architectures, although at the time of the architectures, although at the time of writing it is not completed,
of writing it is not completed, requiring third-party patches. requiring third-party patches.
Attributes Attributes
---------- ----------