--- icu/source/tools/toolutil/pkg_genc.h.orig	2022-01-11 06:02:29.694678787 +0100
+++ icu/source/tools/toolutil/pkg_genc.h	2022-01-11 06:02:41.602640965 +0100
@@ -48,9 +48,7 @@
  * the data to generate the final data library. This can
  * increase the performance of the pkdata tool.
  */
-#if U_PLATFORM == U_PF_OS400
 #define USE_SINGLE_CCODE_FILE
-#endif
 
 /* Need to fix the file seperator character when using MinGW. */
 #if defined(WINDOWS_WITH_GNUC) || defined(USING_CYGWIN)
