Author: David Spickett Date: 2024-05-02T08:44:32+01:00 New Revision: 16096325a5ff66d26b7e3424e7fac029c3dd35ea
URL: https://github.com/llvm/llvm-project/commit/16096325a5ff66d26b7e3424e7fac029c3dd35ea DIFF: https://github.com/llvm/llvm-project/commit/16096325a5ff66d26b7e3424e7fac029c3dd35ea.diff LOG: [clang][Docs] Add release note for {target}-none-{environment} triple normalization changes (#90734) That were implemented by https://github.com/llvm/llvm-project/pull/89638. Added: Modified: clang/docs/ReleaseNotes.rst Removed: ################################################################################ diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst index 818dce8fb83b9e..85f7144a27caac 100644 --- a/clang/docs/ReleaseNotes.rst +++ b/clang/docs/ReleaseNotes.rst @@ -90,6 +90,25 @@ Clang Frontend Potentially Breaking Changes of ``-Wno-gnu-binary-literal`` will no longer silence this pedantic warning, which may break existing uses with ``-Werror``. +- The normalization of 3 element target triples where ``-none-`` is the middle + element has changed. For example, ``armv7m-none-eabi`` previously normalized + to ``armv7m-none-unknown-eabi``, with ``none`` for the vendor and ``unknown`` + for the operating system. It now normalizes to ``armv7m-unknown-none-eabi``, + which has ``unknown`` vendor and ``none`` operating system. + + The affected triples are primarily for bare metal Arm where it is intended + that ``none`` means that there is no operating system. As opposed to an unknown + type of operating system. + + This change my cause clang to not find libraries, or libraries to be built at + diff erent file system locations. This can be fixed by changing your builds to + use the new normalized triple. However, we recommend instead getting the + normalized triple from clang itself, as this will make your builds more + robust in case of future changes:: + + $ clang --target=<your target triple> -print-target-triple + <the normalized target triple> + What's New in Clang |release|? ============================== Some of the major new features and improvements to Clang are listed _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
