Merge pull request swiftlang#78134 from etcwilde/ewilde/x-platform-fixes

[CMake] Fix some issues in new runtime build for Linux and Windows builds

Author: compnerd

Runtimes/Core/cmake/modules/DefaultSettings.cmake

@@ -28,7 +28,7 @@ endmacro()
 # If no such default variable exists, the variable is not created.
 macro(defaulted_set variable type helptext)
   if(DEFINED ${variable}_default)
-    set(${variable} ${variable}_default CACHE ${type} ${helptext})
+    set(${variable} ${${variable}_default} CACHE ${type} ${helptext})
   endif()
 endmacro()
 

Runtimes/Core/runtime/CMakeLists.txt

@@ -109,10 +109,12 @@ if(SwiftCore_ENABLE_BACKTRACING)
     CrashHandlerLinux.cpp)
 endif()
 
+target_sources(swiftRuntime PRIVATE
+  ErrorObject.mm
+  SwiftObject.mm)
+
 if(SwiftCore_ENABLE_OBJC_INTEROP)
   target_sources(swiftRuntime PRIVATE
-    ErrorObject.mm
-    SwiftObject.mm
     SwiftValue.mm
     ReflectionMirrorObjC.mm
     ObjCRuntimeGetImageNameFromClass.mm)