--- Libc/Libc-391/include/libkern/Makefile.inc
+++ /dev/null
@@ -1,3 +0,0 @@
-LIBKERN_INSTHDRS += OSAtomic.h
-
-LIBKERN_INSTHDRS := ${LIBKERN_INSTHDRS:S/^/${.CURDIR}\/include\/libkern\//}