diff options
Diffstat (limited to 'share/cmake-3.22/Modules/Platform/Darwin-Initialize.cmake')
| -rw-r--r-- | share/cmake-3.22/Modules/Platform/Darwin-Initialize.cmake | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/share/cmake-3.22/Modules/Platform/Darwin-Initialize.cmake b/share/cmake-3.22/Modules/Platform/Darwin-Initialize.cmake new file mode 100644 index 0000000..c2f1851 --- /dev/null +++ b/share/cmake-3.22/Modules/Platform/Darwin-Initialize.cmake @@ -0,0 +1,318 @@ +# Ask xcode-select where to find /Developer or fall back to ancient location. +execute_process(COMMAND xcode-select -print-path + OUTPUT_VARIABLE _stdout + OUTPUT_STRIP_TRAILING_WHITESPACE + ERROR_VARIABLE _stderr + RESULT_VARIABLE _failed) +if(NOT _failed AND IS_DIRECTORY ${_stdout}) + set(OSX_DEVELOPER_ROOT ${_stdout}) +elseif(IS_DIRECTORY "/Developer") + set(OSX_DEVELOPER_ROOT "/Developer") +else() + set(OSX_DEVELOPER_ROOT "") +endif() + +execute_process(COMMAND sw_vers -productVersion + OUTPUT_VARIABLE CURRENT_OSX_VERSION + OUTPUT_STRIP_TRAILING_WHITESPACE) + +# Save CMAKE_OSX_ARCHITECTURES from the environment. +set(CMAKE_OSX_ARCHITECTURES "$ENV{CMAKE_OSX_ARCHITECTURES}" CACHE STRING + "Build architectures for OSX") + +if(NOT CMAKE_CROSSCOMPILING AND + CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND + CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "^(arm64|x86_64)$") + execute_process(COMMAND sysctl -q hw.optional.arm64 + OUTPUT_VARIABLE _sysctl_stdout + ERROR_VARIABLE _sysctl_stderr + RESULT_VARIABLE _sysctl_result + ) + # When building on an Apple Silicon host, we need to explicitly specify + # the architecture to the toolchain since it will otherwise guess the + # architecture based on that of the build system tool. + # Set an *internal variable* to tell the generators to do this. + if(_sysctl_result EQUAL 0 AND _sysctl_stdout MATCHES "hw.optional.arm64: 1") + set(_CMAKE_APPLE_ARCHS_DEFAULT "${CMAKE_HOST_SYSTEM_PROCESSOR}") + endif() + unset(_sysctl_result) + unset(_sysctl_stderr) + unset(_sysctl_stdout) +endif() + +# macOS, iOS, tvOS, and watchOS should lookup compilers from +# Platform/Apple-${CMAKE_CXX_COMPILER_ID}-<LANG> +set(CMAKE_EFFECTIVE_SYSTEM_NAME "Apple") + +#---------------------------------------------------------------------------- +# _CURRENT_OSX_VERSION - as a two-component string: 10.5, 10.6, ... +# +string(REGEX REPLACE "^([0-9]+\\.[0-9]+).*$" "\\1" + _CURRENT_OSX_VERSION "${CURRENT_OSX_VERSION}") + +#---------------------------------------------------------------------------- +# CMAKE_OSX_DEPLOYMENT_TARGET + +# Set cache variable - end user may change this during ccmake or cmake-gui configure. +if(CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND _CURRENT_OSX_VERSION VERSION_GREATER 10.3) + set(CMAKE_OSX_DEPLOYMENT_TARGET "$ENV{MACOSX_DEPLOYMENT_TARGET}" CACHE STRING + "Minimum OS X version to target for deployment (at runtime); newer APIs weak linked. Set to empty string for default value.") +endif() + +#---------------------------------------------------------------------------- +# CMAKE_OSX_SYSROOT + +if(CMAKE_OSX_SYSROOT) + # Use the existing value without further computation to choose a default. + set(_CMAKE_OSX_SYSROOT_DEFAULT "${CMAKE_OSX_SYSROOT}") +elseif(NOT "x$ENV{SDKROOT}" STREQUAL "x" AND + (NOT "x$ENV{SDKROOT}" MATCHES "/" OR IS_DIRECTORY "$ENV{SDKROOT}")) + # Use the value of SDKROOT from the environment. + set(_CMAKE_OSX_SYSROOT_DEFAULT "$ENV{SDKROOT}") +elseif(CMAKE_SYSTEM_NAME STREQUAL iOS) + set(_CMAKE_OSX_SYSROOT_DEFAULT "iphoneos") +elseif(CMAKE_SYSTEM_NAME STREQUAL tvOS) + set(_CMAKE_OSX_SYSROOT_DEFAULT "appletvos") +elseif(CMAKE_SYSTEM_NAME STREQUAL watchOS) + set(_CMAKE_OSX_SYSROOT_DEFAULT "watchos") +elseif("${CMAKE_GENERATOR}" MATCHES Xcode + OR CMAKE_OSX_DEPLOYMENT_TARGET + OR CMAKE_OSX_ARCHITECTURES MATCHES "[^;]" + OR NOT EXISTS "/usr/include/sys/types.h") + # Find installed SDKs in either Xcode-4.3+ or pre-4.3 SDKs directory. + set(_CMAKE_OSX_SDKS_DIR "") + if(OSX_DEVELOPER_ROOT) + foreach(_d Platforms/MacOSX.platform/Developer/SDKs SDKs) + file(GLOB _CMAKE_OSX_SDKS ${OSX_DEVELOPER_ROOT}/${_d}/*) + if(_CMAKE_OSX_SDKS) + set(_CMAKE_OSX_SDKS_DIR ${OSX_DEVELOPER_ROOT}/${_d}) + break() + endif() + endforeach() + endif() + + if(_CMAKE_OSX_SDKS_DIR) + # Find the latest SDK as recommended by Apple (Technical Q&A QA1806) + set(_CMAKE_OSX_LATEST_SDK_VERSION "0.0") + file(GLOB _CMAKE_OSX_SDKS RELATIVE "${_CMAKE_OSX_SDKS_DIR}" "${_CMAKE_OSX_SDKS_DIR}/MacOSX*.sdk") + foreach(_SDK ${_CMAKE_OSX_SDKS}) + if(IS_DIRECTORY "${_CMAKE_OSX_SDKS_DIR}/${_SDK}" + AND _SDK MATCHES "MacOSX([0-9]+\\.[0-9]+)[^/]*\\.sdk" + AND CMAKE_MATCH_1 VERSION_GREATER ${_CMAKE_OSX_LATEST_SDK_VERSION}) + set(_CMAKE_OSX_LATEST_SDK_VERSION "${CMAKE_MATCH_1}") + endif() + endforeach() + + if(NOT _CMAKE_OSX_LATEST_SDK_VERSION STREQUAL "0.0") + set(_CMAKE_OSX_SYSROOT_DEFAULT "${_CMAKE_OSX_SDKS_DIR}/MacOSX${_CMAKE_OSX_LATEST_SDK_VERSION}.sdk") + else() + message(WARNING "Could not find any valid SDKs in ${_CMAKE_OSX_SDKS_DIR}") + endif() + + if(NOT CMAKE_CROSSCOMPILING AND NOT CMAKE_OSX_DEPLOYMENT_TARGET + AND (_CURRENT_OSX_VERSION VERSION_LESS _CMAKE_OSX_LATEST_SDK_VERSION + OR _CMAKE_OSX_LATEST_SDK_VERSION STREQUAL "0.0")) + set(CMAKE_OSX_DEPLOYMENT_TARGET ${_CURRENT_OSX_VERSION} CACHE STRING + "Minimum OS X version to target for deployment (at runtime); newer APIs weak linked. Set to empty string for default value." FORCE) + endif() + else() + # Assume developer files are in root (such as Xcode 4.5 command-line tools). + set(_CMAKE_OSX_SYSROOT_DEFAULT "") + endif() +endif() + +# Set cache variable - end user may change this during ccmake or cmake-gui configure. +# Choose the type based on the current value. +set(_CMAKE_OSX_SYSROOT_TYPE STRING) +foreach(_v CMAKE_OSX_SYSROOT _CMAKE_OSX_SYSROOT_DEFAULT) + if("x${${_v}}" MATCHES "/") + set(_CMAKE_OSX_SYSROOT_TYPE PATH) + break() + endif() +endforeach() +set(CMAKE_OSX_SYSROOT "${_CMAKE_OSX_SYSROOT_DEFAULT}" CACHE ${_CMAKE_OSX_SYSROOT_TYPE} + "The product will be built against the headers and libraries located inside the indicated SDK.") + +# Resolves the SDK name into a path +function(_apple_resolve_sdk_path sdk_name ret) + execute_process( + COMMAND xcrun -sdk ${sdk_name} --show-sdk-path + OUTPUT_VARIABLE _stdout + OUTPUT_STRIP_TRAILING_WHITESPACE + ERROR_VARIABLE _stderr + RESULT_VARIABLE _failed + ) + set(${ret} "${_stdout}" PARENT_SCOPE) +endfunction() + +function(_apple_resolve_supported_archs_for_sdk_from_system_lib sdk_path ret ret_failed) + # Detect the supported SDK architectures by inspecting the main libSystem library. + set(common_lib_prefix "${sdk_path}/usr/lib/libSystem") + set(system_lib_dylib_path "${common_lib_prefix}.dylib") + set(system_lib_tbd_path "${common_lib_prefix}.tbd") + + # Newer SDKs ship text based dylib stub files which contain the architectures supported by the + # library in text form. + if(EXISTS "${system_lib_tbd_path}") + file(STRINGS "${system_lib_tbd_path}" tbd_lines REGEX "^(archs|targets): +\\[.+\\]") + if(NOT tbd_lines) + set(${ret_failed} TRUE PARENT_SCOPE) + return() + endif() + + # The tbd architectures line looks like the following: + # archs: [ armv7, armv7s, arm64, arm64e ] + # or for version 4 TBD files: + # targets: [ armv7-ios, armv7s-ios, arm64-ios, arm64e-ios ] + list(GET tbd_lines 0 first_arch_line) + string(REGEX REPLACE + "(archs|targets): +\\[ (.+) \\]" "\\2" arches_comma_separated "${first_arch_line}") + string(STRIP "${arches_comma_separated}" arches_comma_separated) + string(REPLACE "," ";" arch_list "${arches_comma_separated}") + string(REPLACE " " "" arch_list "${arch_list}") + + # Remove -platform suffix from target (version 4 only) + string(REGEX REPLACE "-[a-z-]+" "" arch_list "${arch_list}") + + if(NOT arch_list) + set(${ret_failed} TRUE PARENT_SCOPE) + return() + endif() + set(${ret} "${arch_list}" PARENT_SCOPE) + elseif(EXISTS "${system_lib_dylib_path}") + # Old SDKs (Xcode < 7) ship dylib files, use lipo to inspect the supported architectures. + # Can't use -archs because the option is not available in older Xcode versions. + execute_process( + COMMAND lipo -info ${system_lib_dylib_path} + OUTPUT_VARIABLE lipo_output + OUTPUT_STRIP_TRAILING_WHITESPACE + ERROR_VARIABLE _stderr + RESULT_VARIABLE _failed + ) + if(_failed OR NOT lipo_output OR NOT lipo_output MATCHES "(Non-fat file:|Architectures in the fat file:)") + set(${ret_failed} TRUE PARENT_SCOPE) + return() + endif() + + # The lipo output looks like the following: + # Non-fat file: <path> is architecture: i386 + # Architectures in the fat file: <path> are: i386 x86_64 + string(REGEX REPLACE + "^(.+)is architecture:(.+)" "\\2" arches_space_separated "${lipo_output}") + string(REGEX REPLACE + "^(.+)are:(.+)" "\\2" arches_space_separated "${arches_space_separated}") + + # Need to clean up the arches, with Xcode 4.6.3 the output of lipo -info contains some + # additional info, e.g. + # Architectures in the fat file: <path> are: armv7 (cputype (12) cpusubtype (11)) + string(REGEX REPLACE + "\\(.+\\)" "" arches_space_separated "${arches_space_separated}") + + # The output is space separated. + string(STRIP "${arches_space_separated}" arches_space_separated) + string(REPLACE " " ";" arch_list "${arches_space_separated}") + + if(NOT arch_list) + set(${ret_failed} TRUE PARENT_SCOPE) + return() + endif() + set(${ret} "${arch_list}" PARENT_SCOPE) + else() + # This shouldn't happen, but keep it for safety. + message(WARNING "No way to find architectures for given sdk_path '${sdk_path}'") + set(${ret_failed} TRUE PARENT_SCOPE) + endif() +endfunction() + +# Handle multi-arch sysroots. Do this before CMAKE_OSX_SYSROOT is +# transformed into a path, so that we know the sysroot name. +function(_apple_resolve_multi_arch_sysroots) + if(DEFINED CMAKE_APPLE_ARCH_SYSROOTS) + return() # Already cached + endif() + + list(LENGTH CMAKE_OSX_ARCHITECTURES _num_archs) + if(NOT (_num_archs GREATER 1)) + return() # Only apply to multi-arch + endif() + + if(CMAKE_OSX_SYSROOT STREQUAL "macosx") + # macOS doesn't have a simulator sdk / sysroot, so there is no need to handle per-sdk arches. + return() + endif() + + if(IS_DIRECTORY "${CMAKE_OSX_SYSROOT}") + if(NOT CMAKE_OSX_SYSROOT STREQUAL _CMAKE_OSX_SYSROOT_DEFAULT) + message(WARNING "Can not resolve multi-arch sysroots with CMAKE_OSX_SYSROOT set to path (${CMAKE_OSX_SYSROOT})") + endif() + return() + endif() + + string(REPLACE "os" "simulator" _simulator_sdk ${CMAKE_OSX_SYSROOT}) + set(_sdks "${CMAKE_OSX_SYSROOT};${_simulator_sdk}") + foreach(sdk ${_sdks}) + _apple_resolve_sdk_path(${sdk} _sdk_path) + if(NOT IS_DIRECTORY "${_sdk_path}") + message(WARNING "Failed to resolve SDK path for '${sdk}'") + continue() + endif() + + _apple_resolve_supported_archs_for_sdk_from_system_lib(${_sdk_path} _sdk_archs _failed) + + if(_failed) + # Failure to extract supported architectures for an SDK means that the installed SDK is old + # and does not provide such information (SDKs that come with Xcode >= 10.x started providing + # the information). In such a case, return early, and handle multi-arch builds the old way + # (no per-sdk arches). + return() + endif() + + set(_sdk_archs_${sdk} ${_sdk_archs}) + set(_sdk_path_${sdk} ${_sdk_path}) + endforeach() + + foreach(arch ${CMAKE_OSX_ARCHITECTURES}) + set(_arch_sysroot "") + foreach(sdk ${_sdks}) + list(FIND _sdk_archs_${sdk} ${arch} arch_index) + if(NOT arch_index EQUAL -1) + set(_arch_sysroot ${_sdk_path_${sdk}}) + break() + endif() + endforeach() + if(_arch_sysroot) + list(APPEND _arch_sysroots ${_arch_sysroot}) + else() + message(WARNING "No SDK found for architecture '${arch}'") + list(APPEND _arch_sysroots "${arch}-SDK-NOTFOUND") + endif() + endforeach() + + set(CMAKE_APPLE_ARCH_SYSROOTS "${_arch_sysroots}" CACHE INTERNAL + "Architecture dependent sysroots, one per CMAKE_OSX_ARCHITECTURES") +endfunction() + +_apple_resolve_multi_arch_sysroots() + +# Transform CMAKE_OSX_SYSROOT to absolute path +set(_CMAKE_OSX_SYSROOT_PATH "") +if(CMAKE_OSX_SYSROOT) + if("x${CMAKE_OSX_SYSROOT}" MATCHES "/") + # This is a path to the SDK. Make sure it exists. + if(NOT IS_DIRECTORY "${CMAKE_OSX_SYSROOT}") + message(WARNING "Ignoring CMAKE_OSX_SYSROOT value:\n ${CMAKE_OSX_SYSROOT}\n" + "because the directory does not exist.") + set(CMAKE_OSX_SYSROOT "") + endif() + set(_CMAKE_OSX_SYSROOT_PATH "${CMAKE_OSX_SYSROOT}") + else() + _apple_resolve_sdk_path(${CMAKE_OSX_SYSROOT} _sdk_path) + if(IS_DIRECTORY "${_sdk_path}") + set(_CMAKE_OSX_SYSROOT_PATH "${_sdk_path}") + # For non-Xcode generators use the path. + if(NOT "${CMAKE_GENERATOR}" MATCHES "Xcode") + set(CMAKE_OSX_SYSROOT "${_CMAKE_OSX_SYSROOT_PATH}") + endif() + endif() + endif() +endif() |