diff --git a/Modules/Platform/Apple-Apple-Swift.cmake b/Modules/Platform/Apple-Apple-Swift.cmake
new file mode 100644
index 0000000000..7ca3e36e9f
--- /dev/null
+++ b/Modules/Platform/Apple-Apple-Swift.cmake
@@ -0,0 +1 @@
+set(CMAKE_Swift_SYSROOT_FLAG "-sdk")