--- Libc/Libc-391.5.21/include/libkern/Makefile.inc
+++ Libc/Libc-594.9.5/include/libkern/Makefile.inc
@@ -1,3 +1,7 @@
-LIBKERN_INSTHDRS += OSAtomic.h
+LIBKERN_INSTHDRS += OSAtomic.h OSCacheControl.h
+
+.ifdef FEATURE_MEM_THERM_NOTIFICATION_APIS
+LIBKERN_INSTHDRS += OSMemoryNotification.h OSThermalNotification.h
+.endif
 
 LIBKERN_INSTHDRS := ${LIBKERN_INSTHDRS:S/^/${.CURDIR}\/include\/libkern\//}