Runtimes: properly link in swiftrtT?.obj on Windows

`swiftrtT.obj` should be used for statically linking the standard
library (or within the standard library itself). For the other modules,
we need to differentiate between `swiftrt.obj` and `swiftrtT.obj`. This
fixes that oversight. This was not caught by the CI builds as we do not
currently build both the static and dynamic variants of the new
runtimes.

Author: compnerd

Runtimes/Core/Concurrency/CMakeLists.txt

@@ -116,7 +116,7 @@ target_link_libraries(swift_Concurrency PRIVATE
   $<$<PLATFORM_ID:Windows>:mincore>
   # Link to the runtime that we are just building.
   swiftCore
-  $<$<NOT:$<PLATFORM_ID:Darwin>>:swiftrt>)
+  SwiftRuntimeRegistration)
 target_link_options(swift_Concurrency PRIVATE
   -nostartfiles)
 set_target_properties(swift_Concurrency PROPERTIES

Runtimes/Core/SwiftOnoneSupport/CMakeLists.txt

@@ -26,10 +26,14 @@ target_compile_options(swiftSwiftOnoneSupport PRIVATE
 target_compile_definitions(swiftSwiftOnoneSupport PRIVATE
   $<$<COMPILE_LANGUAGE:C,CXX>:-DSWIFT_TARGET_LIBRARY_NAME=swiftSwiftOnoneSupport>)
 
+target_link_options(swiftSwiftOnoneSupport PRIVATE
+  -nostartfiles)
+
 target_link_libraries(swiftSwiftOnoneSupport
   PRIVATE
     swiftShims
-    swiftCore)
+    swiftCore
+    SwiftRuntimeRegistration)
 
 install(TARGETS swiftSwiftOnoneSupport
     EXPORT SwiftCoreTargets

Runtimes/Core/runtime/CMakeLists.txt

@@ -173,6 +173,7 @@ elseif("${SwiftCore_OBJECT_FORMAT}" STREQUAL "coffx")
     SWIFT_STATIC_STDLIB)
   target_link_libraries(swiftrtT PRIVATE swiftShims)
   install(FILES $<TARGET_OBJECTS:swiftrtT>
+    COMPONENT SwiftCore_runtime
     DESTINATION "${CMAKE_INSTALL_LIBDIR}/swift/${SwiftCore_PLATFORM_SUBDIR}/${SwiftCore_ARCH_SUBDIR}"
     RENAME swiftrtT.obj)
 
@@ -185,3 +186,10 @@ elseif("${SwiftCore_OBJECT_FORMAT}" STREQUAL "coffx")
 elseif(NOT "${SwiftCore_OBJECT_FORMAT}" STREQUAL "x")
   message(SEND_ERROR "Unknown object format '${SwiftCore_OBJECT_FORMAT}'")
 endif()
+
+add_library(SwiftRuntimeRegistration INTERFACE)
+target_link_libraries(SwiftRuntimeRegistration INTERFACE
+  $<$<NOT:$<PLATFORM_ID:Darwin>>:swiftrt$<$<AND:$<PLATFORM_ID:Windows>,$<NOT:$<BOOL:${BUILD_SHARED_LIBS}>>>:T>>)
+install(TARGETS SwiftRuntimeRegistration
+  EXPORT SwiftCoreTargets
+  COMPONENT SwiftCore_runtime)