--- swift/CMakeLists.txt.orig	2024-06-06 04:26:30 UTC
+++ swift/CMakeLists.txt
@@ -133,7 +133,7 @@
 else()
   if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
     set(SWIFT_HOST_VARIANT_SDK_default "LINUX")
-  elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD")
+  elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD" OR "${CMAKE_SYSTEM_NAME}" STREQUAL "MidnightBSD")
     set(SWIFT_HOST_VARIANT_SDK_default "FREEBSD")
   elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "OpenBSD")
     set(SWIFT_HOST_VARIANT_SDK_default "OPENBSD")
