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98e319a88f
Since commit b6c60f14b6 (macOS: Default to arm64 architecture on Apple
Silicon hosts, 2020-09-28, v3.19.0-rc1~63^2) we add `-arch arm64` by
default on Apple Silicon hosts if `CMAKE_OSX_ARCHITECTURES` is not set.
This is necessary to prevent the toolchain from selecting its own
default architecture based on that of the build tool (e.g., `x86_64`).
If `CMAKE_<LANG>_COMPILER_TARGET` is set, its `-target` flag tells the
compiler what architecture to use, so do not add `-arch arm64`.
Fixes: #24599
34 lines
1.0 KiB
CMake
34 lines
1.0 KiB
CMake
include(RunCMake)
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# Isolate from caller's environment.
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set(ENV{CMAKE_APPLE_SILICON_PROCESSOR} "")
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set(ENV{CMAKE_OSX_ARCHITECTURES} "")
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function(run_arch case)
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set(RunCMake_TEST_OPTIONS ${ARGN})
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set(RunCMake_TEST_BINARY_DIR "${RunCMake_BINARY_DIR}/${case}-build")
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run_cmake(${case})
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unset(RunCMake_TEST_OPTIONS)
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set(RunCMake_TEST_NO_CLEAN 1)
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set(RunCMake_TEST_OUTPUT_MERGE 1)
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run_cmake_command(${case}-build ${CMAKE_COMMAND} --build . --config Debug --verbose)
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endfunction()
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run_arch(default)
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if(RunCMake_GENERATOR MATCHES "Makefiles|Ninja")
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run_arch(default-target-arm64 -DCMAKE_C_COMPILER_TARGET=arm64-apple-macosx)
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run_arch(default-target-x86_64 -DCMAKE_C_COMPILER_TARGET=x86_64-apple-macosx)
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endif()
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run_arch(arm64-var -DCMAKE_APPLE_SILICON_PROCESSOR=arm64)
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run_arch(x86_64-var -DCMAKE_APPLE_SILICON_PROCESSOR=x86_64)
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set(ENV{CMAKE_APPLE_SILICON_PROCESSOR} "arm64")
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run_arch(arm64-env)
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set(ENV{CMAKE_APPLE_SILICON_PROCESSOR} "x86_64")
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run_arch(x86_64-env)
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set(ENV{CMAKE_APPLE_SILICON_PROCESSOR} "")
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