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CMake: Enable finding the Swift -target flag in more cases

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When the detected SDK for CMAKE_OSX_SYSROOT and friends has the same
version as your current macOS system version, CMake helpfully doesn't
set CMAKE_OSX_DEPLOYMENT_TARGET. Unfortunately, in this case, swiftc
will default to macOS 10.4, which is absolutely ancient. Grab the target
triple from the -print-target-info JSON when CMAKE_OSX_DEPLOYMENT_TARGET
is not provided at configure time.
This commit is contained in:
Andrew Kaster 2024-09-21 12:55:52 -06:00 • committed by Andrew Kaster
parent ee54f9ee95
commit 7ab1d117f1
Notes: github-actions[bot] 2024-09-23 17:07:23 +00:00
2 changed files with 14 additions and 3 deletions
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15
Meta/CMake/Swift/InitializeSwift.cmake
View file

@ -25,7 +25,7 @@ endfunction()
# NOTE: This logic will eventually move to CMake
function(_setup_swift_paths)
# If we haven't set the swift library search paths, do that now
if(NOT SWIFT_LIBRARY_SEARCH_PATHS OR NOT SWIFT_INCLUDE_PATHS)
if(NOT SWIFT_LIBRARY_SEARCH_PATHS OR NOT SWIFT_INCLUDE_PATHS OR (APPLE AND NOT SWIFT_TARGET_TRIPLE))
if(APPLE)
set(SDK_FLAGS "-sdk" "${CMAKE_OSX_SYSROOT}")
endif()
@ -38,6 +38,17 @@ function(_setup_swift_paths)
OUTPUT_VARIABLE SWIFT_TARGET_INFO
)
# FIXME: https://gitlab.kitware.com/cmake/cmake/-/issues/26174
if (APPLE)
if (CMAKE_OSX_DEPLOYMENT_TARGET)
set(SWIFT_TARGET_TRIPLE "${CMAKE_SYSTEM_PROCESSOR}-apple-macosx${CMAKE_OSX_DEPLOYMENT_TARGET}" CACHE STRING "Swift target triple")
else()
string(JSON SWIFT_TARGET_TARGET GET ${SWIFT_TARGET_INFO} "target")
string(JSON SWIFT_TARGET_TARGET_TRIPLE GET ${SWIFT_TARGET_TARGET} "triple")
set(SWIFT_TARGET_TRIPLE ${SWIFT_TARGET_TARGET_TRIPLE} CACHE STRING "Swift target triple")
endif()
endif()
# extract search paths from swift driver response
string(JSON SWIFT_TARGET_PATHS GET ${SWIFT_TARGET_INFO} "paths")
@ -72,7 +83,7 @@ function(_setup_swift_paths)
set(SWIFT_TOOLCHAIN_INCLUDE_DIR "${SWIFT_RUNTIME_RESOURCE_PATH}/../../include")
cmake_path(ABSOLUTE_PATH SWIFT_TOOLCHAIN_INCLUDE_DIR NORMALIZE)
if (NOT IS_DIRECTORY "${SWIFT_TOOLCHAIN_INCLUDE_DIR}")
message(WARNING "Expected toolchain include dir ${SWIFT_TOOLCHAIN_INCLUDE_DIR} does not exist")
message(WARNING "Expected toolchain include dir ${SWIFT_TOOLCHAIN_INCLUDE_DIR} does not exist")
endif()
set(SWIFT_INCLUDE_PATHS ${SWIFT_TOOLCHAIN_INCLUDE_DIR} CACHE FILEPATH "Swift interop include paths")
endif()

2
Meta/CMake/Swift/swift-settings.cmake
View file

@ -18,7 +18,7 @@ include(${CMAKE_CURRENT_LIST_DIR}/GenerateSwiftHeader.cmake)
# FIXME: https://gitlab.kitware.com/cmake/cmake/-/issues/26174
if (APPLE)
set(CMAKE_Swift_COMPILER_TARGET "${CMAKE_SYSTEM_PROCESSOR}-apple-macosx${CMAKE_OSX_DEPLOYMENT_TARGET}")
set(CMAKE_Swift_COMPILER_TARGET "${SWIFT_TARGET_TRIPLE}")
endif()
set(VFS_OVERLAY_DIRECTORY "${CMAKE_BINARY_DIR}/vfs_overlays" CACHE PATH "Directory to put VFS overlays in")