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Runtimes: provide a dedicated find module for Darwin overlay #84388

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Merged
merged 1 commit into from
Oct 6, 2025
Merged

Runtimes: provide a dedicated find module for Darwin overlay #84388

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70 changes: 70 additions & 0 deletions Runtimes/Supplemental/cmake/modules/FindSwiftDarwin.cmake
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Original file line number Diff line number Diff line change
@@ -0,0 +1,70 @@
#[=======================================================================[.rst:
FindSwiftDarwin
------------

Find swiftDarwin in the underlying SDK (the only way we obtain such overlay).

Imported Targets
^^^^^^^^^^^^^^^^

The following :prop_tgt:`IMPORTED` TARGETS may be defined:

``swiftDarwin``

#]=======================================================================]

include_guard(GLOBAL)

# This was loosely modelled after other find modules
# (namely FindGLEW), where the equivalent parameter
# is not stored in cache (possibly because we want
# the project importing it to be able to use
# it "immediately")
if(NOT DEFINED SwiftDarwin_USE_STATIC_LIBS)
set(SwiftDarwin_USE_STATIC_LIBS OFF)
endif()

include(FindPackageHandleStandardArgs)
include(PlatformInfo)

if(NOT APPLE)
message(WARNING "Darwin is only produced on Apple platforms, so not attempting to search it here.")
return()
endif()

# Look in the SDK
list(APPEND swiftDarwin_INCLUDE_DIR_HINTS
"${CMAKE_OSX_SYSROOT}/usr/lib/swift")
list(APPEND swiftDarwin_LIBRARY_HINTS
"${CMAKE_OSX_SYSROOT}/usr/lib/swift")
# When building for Apple platforms, swiftDarwin always comes from within the
# SDK as a tbd for a shared library in the shared cache.
list(APPEND swiftDarwin_NAMES libswiftDarwin.tbd)
set(swiftDarwin_MODULE_NAME "Darwin.swiftmodule")

find_path(swiftDarwin_INCLUDE_DIR
${swiftDarwin_MODULE_NAME}
NO_CMAKE_FIND_ROOT_PATH
HINTS
${swiftDarwin_INCLUDE_DIR_HINTS})
find_library(swiftDarwin_LIBRARY
NAMES
${swiftDarwin_NAMES}
NO_CMAKE_FIND_ROOT_PATH
HINTS
${swiftDarwin_LIBRARY_HINTS})

if(SwiftDarwin_USE_STATIC_LIBS)
add_library(swiftDarwin STATIC IMPORTED GLOBAL)
else()
add_library(swiftDarwin SHARED IMPORTED GLOBAL)
endif()

target_include_directories(swiftDarwin INTERFACE
"${swiftDarwin_INCLUDE_DIR}")

set_target_properties(swiftDarwin PROPERTIES
IMPORTED_IMPLIB "${swiftDarwin_LIBRARY}")

find_package_handle_standard_args(SwiftDarwin DEFAULT_MSG
"swiftDarwin_LIBRARY" "swiftDarwin_INCLUDE_DIR")
13 changes: 3 additions & 10 deletions Runtimes/Supplemental/cmake/modules/FindSwiftOverlay.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -55,16 +55,9 @@ include(FindPackageHandleStandardArgs)
include(PlatformInfo)

if(APPLE)
list(APPEND OVERLAY_TARGET_NAMES "swiftDarwin")
# Look in the SDK
list(APPEND swiftDarwin_INCLUDE_DIR_HINTS
"${CMAKE_OSX_SYSROOT}/usr/lib/swift")
list(APPEND swiftDarwin_LIBRARY_HINTS
"${CMAKE_OSX_SYSROOT}/usr/lib/swift")
# When building for Apple platforms, swiftDarwin always comes from within the
# SDK as a tbd for a shared library in the shared cache.
list(APPEND swiftDarwin_NAMES libswiftDarwin.tbd)
set(swiftDarwin_MODULE_NAME "Darwin.swiftmodule")
# Darwin has its own dedicated find module,
# so that we can use it together with the CMake config file
# generated by the Overlay build system

list(APPEND swift_Builtin_float_INCLUDE_DIR_HINTS
"${CMAKE_OSX_SYSROOT}/usr/lib/swift")
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