Merge remote-tracking branch 'origin/master' into master-next

Author: swift-ci

stdlib/tools/swift-reflection-test/CMakeLists.txt

@@ -4,4 +4,10 @@ add_swift_target_executable(swift-reflection-test BUILD_WITH_STDLIB
   LINK_FAT_LIBRARIES
     swiftRemoteMirror
     swiftReflection)
-
+# NOTE(compnerd) since _WINDLL has no impact on non-Windows targets,
+# we just spam it on all the targets for simplicity due to the build
+# structure of swift.  This will make the global variable imported,
+# which we need.
+set_source_files_properties(swift-reflection-test.c
+                            PROPERTIES
+                              COMPILE_FLAGS -D_WINDLL)