Issue #27453: CPP invocation in configure must use CPPFLAGS.
Patch by Chi Hsuan Yen.
diff --git a/Misc/ACKS b/Misc/ACKS
index a4a4cdc..150d37a 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1663,3 +1663,4 @@
 Doug Zongker
 Peter Åstrand
 evilzero
+Chi Hsuan Yen