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
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
The CMAKE_MINIMUM_REQUIRED_VERSION has long been set by
the cmake_minimum_required() command, but the command docs
never mentioned this. Only the variable's own docs stated this but
the variable isn't very discoverable without it being mentioned in
the command's docs as well.
Add test cases verifying that `CMAKE_APPLE_SILICON_PROCESSOR` set as
either a cache or environment variable causes that to be selected as the
host architecture. Also verify that sources compile using whatever is
selected as the host architecture, even when the explicit setting is not
used.
Issue: #21554
Since commit b6c60f14b6 (macOS: Default to arm64 architecture on Apple
Silicon hosts, 2020-09-28, v3.19.0-rc1~63^2) we use `sysctl` to detect
that we are running on Apple Silicon in a way that pierces Rosetta.
This always sets `CMAKE_HOST_SYSTEM_PROCESSOR` to be `arm64` on such
hosts. However, macOS offers strong support for running processes under
an emulated `x86_64` architecture.
Teach CMake to select either `arm64` or `x86_64` as the host
architecture on Apple Silicon based on the architecture of its own
process. When CMake is built as a universal binary, macOS will select
whichever slice (architecture) is appropriate under the user's shell,
and `CMAKE_HOST_SYSTEM_PROCESSOR` will match.
Also offer a `CMAKE_APPLE_SILICON_PROCESSOR` variable and environment
variable to provide users with explicit control over the host
architecture selection regardless of CMake's own architecture.
Finally, if `CMAKE_OSX_ARCHITECTURES` is not set, pass explicit flags to
the toolchain to use selected host architecture instead of letting the
toolchain pick.
Fixes: #21554
55193c8013 ci: Hard-code XCTest deployment target to 10.15
40877903ac Tests: Remove outdated exclusion of tests on OS X 10.3
c404d7f221 Tests: Add cache entry to control XCTest deployment target
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !5593
55193c8013 ci: Hard-code XCTest deployment target to 10.15
40877903ac Tests: Remove outdated exclusion of tests on OS X 10.3
c404d7f221 Tests: Add cache entry to control XCTest deployment target
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !5593
1. COMMAND_ERROR_IS_FATAL ANY will capture errors if the exit code is
non zero, there is a timeout or an abnormal exit.
2. COMMAND_ERROR_IS_FATAL LAST
will capture if only the last process has an exit code non zero, there
is a timeout or an abnormal exit.
Fixes: #21562
7808cbd644 CMakeDetermineCompilerId: support Intel DPC++ compiler toolset for VS gen
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !5579
Brad King