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[embedded] Make stdlib APIs automatically available on older Darwin versions in Embedded Swift #78263

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Merged
merged 2 commits into from
Dec 20, 2024
Merged

[embedded] Make stdlib APIs automatically available on older Darwin versions in Embedded Swift #78263

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[embedded] Make stdlib APIs automatically available on older Darwin v…
kubamracek Dec 18, 2024
0545277
[embedded] Add test/embedded/availability-macos.swift
kubamracek Dec 18, 2024
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9 changes: 9 additions & 0 deletions stdlib/public/core/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -434,6 +434,15 @@ if(SWIFT_SHOULD_BUILD_EMBEDDED_STDLIB)
set(SWIFT_STDLIB_ENABLE_OBJC_INTEROP OFF)
set(SWIFT_STDLIB_ENABLE_VECTOR_TYPES OFF)

# Under Embedded Swift, all stdlib APIs should be available always. Replace
# all availability macros with very very old OS versions.
set(SWIFT_STDLIB_AVAILABILITY_DEFINITIONS_EMBEDDED)
foreach(def ${SWIFT_STDLIB_AVAILABILITY_DEFINITIONS})
string(REGEX REPLACE ":.*" ":macOS 10.9, iOS 7.0, watchOS 2.0, tvOS 9.0, visionOS 1.0" replaced "${def}")
list(APPEND SWIFT_STDLIB_AVAILABILITY_DEFINITIONS_EMBEDDED "${replaced}")
endforeach()
set(SWIFT_STDLIB_AVAILABILITY_DEFINITIONS "${SWIFT_STDLIB_AVAILABILITY_DEFINITIONS_EMBEDDED}")

foreach(entry ${EMBEDDED_STDLIB_TARGET_TRIPLES})
string(REGEX REPLACE "[ \t]+" ";" list "${entry}")
list(GET list 0 arch)
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13 changes: 13 additions & 0 deletions test/embedded/availability-macos.swift
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@@ -0,0 +1,13 @@
// Checks that in Embedded Swift, we allow using stdlib types even when they
// have declared availability to be higher than our macOS deployment target.

// RUN: %target-typecheck-verify-swift -target arm64-apple-macos14 -enable-experimental-feature Embedded -enable-experimental-feature Span
// RUN: %target-typecheck-verify-swift -target arm64-apple-macos15 -enable-experimental-feature Embedded -enable-experimental-feature Span

// REQUIRES: swift_in_compiler
// REQUIRES: swift_feature_Embedded
// REQUIRES: swift_feature_Span
// REQUIRES: OS=macosx

func f(_: Span<Int>) { } // Span is @available(SwiftStdlib 6.1, *)
func g(_: Int128) { } // Int128 is @available(SwiftStdlib 6.0, *)