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bf1bb62e74
In commit 7b19531291 (macOS: Do not pass any SDK/-isysroot to compilers
by default, 2024-11-06, v4.0.0-rc1~511^2) we broke support for using
upstream LLVM/Clang to build for macOS because the compiler has no
default sysroot. Handle empty `CMAKE_OSX_SYSROOT` with LLVM/Clang by
falling back to the macOS SDK reported by `xcrun --show-sdk-path` .
Fixes: #26863
55 lines
2.8 KiB
CMake
55 lines
2.8 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file LICENSE.rst or https://cmake.org/licensing for details.
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# This module is shared by multiple languages; use include blocker.
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include_guard()
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macro(__apple_compiler_clang lang)
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set(CMAKE_${lang}_VERBOSE_FLAG "-v -Wl,-v") # also tell linker to print verbose output
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set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-dynamiclib -Wl,-headerpad_max_install_names")
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set(CMAKE_SHARED_MODULE_CREATE_${lang}_FLAGS "-bundle -Wl,-headerpad_max_install_names")
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set(CMAKE_${lang}_SYSROOT_FLAG "-isysroot")
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set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "-mmacosx-version-min=")
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if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.2)
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set(CMAKE_${lang}_SYSTEM_FRAMEWORK_SEARCH_FLAG "-iframework ")
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endif()
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set(CMAKE_${lang}_LINK_LIBRARY_USING_FRAMEWORK "-framework <LIBRARY>")
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set(CMAKE_${lang}_LINK_LIBRARY_USING_FRAMEWORK_SUPPORTED TRUE)
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set(CMAKE_${lang}_LINK_LIBRARY_FRAMEWORK_ATTRIBUTES LIBRARY_TYPE=STATIC,SHARED DEDUPLICATION=DEFAULT OVERRIDE=DEFAULT)
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# linker selection
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set(CMAKE_${lang}_USING_LINKER_SYSTEM "-fuse-ld=ld")
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set(CMAKE_${lang}_USING_LINKER_APPLE_CLASSIC "-fuse-ld=ld" "LINKER:-ld_classic")
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set(CMAKE_${lang}_USING_LINKER_LLD "-fuse-ld=lld")
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set(CMAKE_${lang}_USING_LINKER_MOLD "-fuse-ld=mold")
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set(CMAKE_${lang}_USING_LINKER_SOLD "-fuse-ld=sold")
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if(NOT CMAKE_${lang}_COMPILER_APPLE_SYSROOT)
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set(CMAKE_${lang}_COMPILER_APPLE_SYSROOT_REQUIRED 1)
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endif()
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if(_CMAKE_OSX_SYSROOT_PATH MATCHES "/iPhoneOS")
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set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "-miphoneos-version-min=")
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elseif(_CMAKE_OSX_SYSROOT_PATH MATCHES "/iPhoneSimulator")
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set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "-mios-simulator-version-min=")
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elseif(_CMAKE_OSX_SYSROOT_PATH MATCHES "/AppleTVOS")
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set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "-mtvos-version-min=")
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elseif(_CMAKE_OSX_SYSROOT_PATH MATCHES "/AppleTVSimulator")
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set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "-mtvos-simulator-version-min=")
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elseif(_CMAKE_OSX_SYSROOT_PATH MATCHES "/XROS")
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set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "--target=<ARCH>-apple-xros<VERSION_MIN>")
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elseif(_CMAKE_OSX_SYSROOT_PATH MATCHES "/XRSimulator")
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set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "--target=<ARCH>-apple-xros<VERSION_MIN>-simulator")
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elseif(_CMAKE_OSX_SYSROOT_PATH MATCHES "/WatchOS")
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set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "-mwatchos-version-min=")
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elseif(_CMAKE_OSX_SYSROOT_PATH MATCHES "/WatchSimulator")
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set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "-mwatchos-simulator-version-min=")
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elseif(_CMAKE_OSX_SYSROOT_PATH MATCHES "/MacOSX" AND CMAKE_SYSTEM_NAME STREQUAL "iOS")
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set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "--target=<ARCH>-apple-ios<VERSION_MIN>-macabi")
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else()
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set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "-mmacosx-version-min=")
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endif()
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endmacro()
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