Merge pull request #76124 from swiftlang/egorzhdan/maccatalyst-deployment-target

[build] Do not override macOS deployment target when macCatalyst is enabled

Author: egorzhdan

cmake/modules/macCatalystUtils.cmake

@@ -78,7 +78,7 @@ function(get_target_triple target_out_var target_variant_out_var sdk arch)
   elseif(maccatalyst_build_flavor STREQUAL "macos-like")
     # Use the default macOS triple.
   elseif(maccatalyst_build_flavor STREQUAL "zippered")
-    set(target "${arch}-apple-macosx${SWIFT_DARWIN_DEPLOYMENT_VERSION_OSX}")
+    set(target "${arch}-apple-macosx${deployment_version}")
     set(target_variant "${arch}-apple-ios${SWIFT_DARWIN_DEPLOYMENT_VERSION_MACCATALYST}-macabi")
   elseif(maccatalyst_build_flavor STREQUAL "unzippered-twin")
     # Use the default triple for now

test/Interop/Cxx/stdlib/overlay-backdeployment.swift

@@ -0,0 +1,7 @@
+// RUN: %target-build-swift %s -cxx-interoperability-mode=default -target arm64-apple-macos11.0
+
+// REQUIRES: OS=macosx
+
+import Cxx
+
+public func takesCxxType(_ s: some CxxSequence) {}