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| author | Brad King <brad.king@kitware.com> | 2020-12-11 18:05:12 (GMT) |
|---|---|---|
| committer | Kitware Robot <kwrobot@kitware.com> | 2020-12-11 18:05:34 (GMT) |
| commit | 794aa36b1fe945c25822108dbf3bcaa4c89f26d7 (patch) | |
| tree | 97d0622c5cd7ac0be8e137b7cd0ab52c494e0f79 /Help/release | |
| parent | 0d9c43281fa4e39b18f63af3619fb89280bde722 (diff) | |
| parent | b7f0327dcd4032c6a118825adcfdc8dab6295e7f (diff) | |
| download | CMake-794aa36b1fe945c25822108dbf3bcaa4c89f26d7.zip CMake-794aa36b1fe945c25822108dbf3bcaa4c89f26d7.tar.gz CMake-794aa36b1fe945c25822108dbf3bcaa4c89f26d7.tar.bz2 | |
Merge topic 'apple-silicon-host-arch'
b7f0327dcd Tests: Cover macOS host architecture selection on Apple Silicon hosts
5f882f6ce5 macOS: Offer control over host architecture on Apple Silicon hosts
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !5589
Diffstat (limited to 'Help/release')
| -rw-r--r-- | Help/release/3.19.rst | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/Help/release/3.19.rst b/Help/release/3.19.rst index 899e745..4f26058 100644 --- a/Help/release/3.19.rst +++ b/Help/release/3.19.rst @@ -53,6 +53,22 @@ Languages * ``CUDA`` language support now works on QNX. +Platforms +--------- + +* Apple Silicon is now supported (since CMake 3.19.2): + + * The :variable:`CMAKE_HOST_SYSTEM_PROCESSOR` is selected using ``uname -m``. + Since this may vary based on CMake's own architecture and that of + the invoking process tree, the :variable:`CMAKE_APPLE_SILICON_PROCESSOR` + variable or :envvar:`CMAKE_APPLE_SILICON_PROCESSOR` environment + variable may be set to specify a host architecture explicitly. + + * If :variable:`CMAKE_OSX_ARCHITECTURES` is not set, CMake adds explicit + flags to tell the compiler to build for the + :variable:`CMAKE_HOST_SYSTEM_PROCESSOR` so the toolchain does not + have to guess based on the process tree's architecture. + File-Based API -------------- @@ -357,3 +373,11 @@ Changes made since CMake 3.19.0 include the following. It requires macOS 10.10 or newer. The package file naming pattern has been changed from ``cmake-$ver-Darwin-x86_64`` to ``cmake-$ver-macos-universal``. + +* Apple Silicon host architecture selection support was updated. + CMake 3.19.0 and 3.19.1 always chose ``arm64`` as the host architecture. + CMake 3.19.2 returns to using ``uname -m`` as CMake 3.18 and below did. + Since this may vary based on CMake's own architecture and that of + the invoking process tree, the :variable:`CMAKE_APPLE_SILICON_PROCESSOR` + variable or :envvar:`CMAKE_APPLE_SILICON_PROCESSOR` environment + variable may be set to specify a host architecture explicitly. |