diff options
Diffstat (limited to 'Modules/Platform/Darwin-Initialize.cmake')
| -rw-r--r-- | Modules/Platform/Darwin-Initialize.cmake | 105 |
1 files changed, 94 insertions, 11 deletions
diff --git a/Modules/Platform/Darwin-Initialize.cmake b/Modules/Platform/Darwin-Initialize.cmake index 2d797f6..729217c 100644 --- a/Modules/Platform/Darwin-Initialize.cmake +++ b/Modules/Platform/Darwin-Initialize.cmake @@ -122,7 +122,97 @@ 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.") -# Transform the cached value to something we can use. +# 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} "${_stdout}" PARENT_SCOPE) +endfunction() +# Handle multi-arch sysroots. Do this before CMAKE_OSX_SYSROOT is +# transformed into a path, so that we know the sysroot name. +function(_apple_resolve_multi_arch_sysroots) + if(CMAKE_APPLE_ARCH_SYSROOTS) + return() # Already cached + endif() + + list(LENGTH CMAKE_OSX_ARCHITECTURES _num_archs) + if(NOT (_num_archs GREATER 1)) + return() # Only apply to multi-arch + endif() + + if(CMAKE_OSX_SYSROOT STREQUAL "macosx") + # macOS doesn't have a simulator sdk / sysroot, so there is no need to handle per-sdk arches. + return() + endif() + + if(IS_DIRECTORY "${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() + + execute_process( + COMMAND plutil -extract SupportedTargets.${sdk}.Archs json ${_sdk_path}/SDKSettings.plist -o - + OUTPUT_VARIABLE _sdk_archs_json + OUTPUT_STRIP_TRAILING_WHITESPACE + ERROR_VARIABLE _stderr + RESULT_VARIABLE _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() + + # Poor man's JSON decoding + string(REGEX REPLACE "[]\\[\"]" "" _sdk_archs ${_sdk_archs_json}) + string(REPLACE "," ";" _sdk_archs ${_sdk_archs}) + + set(_sdk_archs_${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 "") # Placeholder + 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 "/") @@ -134,16 +224,9 @@ if(CMAKE_OSX_SYSROOT) endif() set(_CMAKE_OSX_SYSROOT_PATH "${CMAKE_OSX_SYSROOT}") else() - # Transform the sdk name into a path. - execute_process( - COMMAND xcodebuild -sdk ${CMAKE_OSX_SYSROOT} -version Path - OUTPUT_VARIABLE _stdout - OUTPUT_STRIP_TRAILING_WHITESPACE - ERROR_VARIABLE _stderr - RESULT_VARIABLE _failed - ) - if(NOT _failed AND IS_DIRECTORY "${_stdout}") - set(_CMAKE_OSX_SYSROOT_PATH "${_stdout}") + _apple_resolve_sdk_path(${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}") |