Differential D10838 Diff 35656 build_files/cmake/platform/platform_apple_xcode.cmake

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build_files/cmake/platform/platform_apple_xcode.cmake

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	unset( _cltools_pkg_info)	unset( _cltools_pkg_info)
	unset(__cltools_pkg_info_result)	unset(__cltools_pkg_info_result)
	endif()	endif()

	# Require a relatively recent Xcode version.	# Require a relatively recent Xcode version.
	if(${XCODE_VERSION} VERSION_LESS 10.0)	if(${XCODE_VERSION} VERSION_LESS 10.0)
	message(FATAL_ERROR "Only Xcode version 10.0 and newer is supported")	message(FATAL_ERROR "Only Xcode version 10.0 and newer is supported")
	endif()	endif()

	# Collect list of OSX system versions which will be used to detect path to corresponding SDK.	# SDK detection.
	# Start with macOS SDK version reported by xcodebuild and include possible extra ones.	execute_process(
	#	COMMAND xcrun --sdk macosx --show-sdk-path
	# The reason for need of extra ones is because it's possible that xcodebuild will report	OUTPUT_VARIABLE OSX_SDK_PATH
	# SDK version in the full manner (aka major.minor.patch), but the actual path will only	OUTPUT_STRIP_TRAILING_WHITESPACE
	# include major.minor.	)
	#
	# This happens, for example, on macOS Catalina 10.15.4 and Xcode 11.4: xcodebuild on this
	# system outputs "10.15.4", but the actual SDK path is MacOSX10.15.sdk.
	#
	# This should be safe from picking wrong SDK version because (a) xcodebuild reports full semantic
	# SDK version, so such SDK does exist on the system. And if it doesn't exist with full version
	# in the path, what SDK is in the major.minor folder then.
	set(OSX_SDK_TEST_VERSIONS ${OSX_SYSTEM})
	if(OSX_SYSTEM MATCHES "([0-9]+)\\.([0-9]+)\\.([0-9]+)")
	string(REGEX REPLACE "([0-9]+)\\.([0-9]+)\\.([0-9]+)" "\\1.\\2" OSX_SYSTEM_NO_PATCH "${OSX_SYSTEM}")
	list(APPEND OSX_SDK_TEST_VERSIONS ${OSX_SYSTEM_NO_PATCH})
	unset(OSX_SYSTEM_NO_PATCH)
	endif()

	# Loop through all possible versions and pick the first one which resolves to a valid SDK path.
	set(OSX_SDK_PATH)
	set(OSX_SDK_FOUND FALSE)
	set(OSX_SDKROOT)
	foreach(OSX_SDK_VERSION ${OSX_SDK_TEST_VERSIONS})
	set(CURRENT_OSX_SDK_PATH "${XCODE_SDK_DIR}/MacOSX${OSX_SDK_VERSION}.sdk")
	if(EXISTS ${CURRENT_OSX_SDK_PATH})
	set(OSX_SDK_PATH "${CURRENT_OSX_SDK_PATH}")
	set(OSX_SDKROOT macosx${OSX_SDK_VERSION})
	set(OSX_SDK_FOUND TRUE)
	break()
	endif()
	endforeach()
	unset(OSX_SDK_TEST_VERSIONS)

	if(NOT OSX_SDK_FOUND)	set(CMAKE_OSX_SYSROOT ${OSX_SDK_PATH} CACHE PATH "" FORCE)
	message(FATAL_ERROR "Unable to find SDK for macOS version ${OSX_SYSTEM}")	if(NOT EXISTS ${CMAKE_OSX_SYSROOT})
		message(FATAL_ERROR "Unable to find SDK for macOS version ${OSX_SYSTEM} at ${CMAKE_OSX_SYSROOT}")
	endif()	endif()

	message(STATUS "Detected OSX_SYSROOT: ${OSX_SDK_PATH}")	message(STATUS "Detected OSX_SYSROOT: ${CMAKE_OSX_SYSROOT}")

	set(CMAKE_OSX_SYSROOT ${OSX_SDK_PATH} CACHE PATH "" FORCE)
	unset(OSX_SDK_PATH)	unset(OSX_SDK_PATH)
	unset(OSX_SDK_FOUND)

	if(${CMAKE_GENERATOR} MATCHES "Xcode")
	# to silence sdk not found warning, just overrides CMAKE_OSX_SYSROOT
	set(CMAKE_XCODE_ATTRIBUTE_SDKROOT ${OSX_SDKROOT})
	endif()
	unset(OSX_SDKROOT)


	# 10.13 is our min. target, if you use higher sdk, weak linking happens	# 10.13 is our min. target, if you use higher sdk, weak linking happens
	if("${CMAKE_OSX_ARCHITECTURES}" STREQUAL "arm64")	if("${CMAKE_OSX_ARCHITECTURES}" STREQUAL "arm64")
	set(OSX_MIN_DEPLOYMENT_TARGET 11.00)	set(OSX_MIN_DEPLOYMENT_TARGET 11.00)
	else()	else()
	set(OSX_MIN_DEPLOYMENT_TARGET 10.13)	set(OSX_MIN_DEPLOYMENT_TARGET 10.13)
	endif()	endif()

	if(CMAKE_OSX_DEPLOYMENT_TARGET)	if(CMAKE_OSX_DEPLOYMENT_TARGET)
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