Index: lib/libc/Makefile
===================================================================
--- lib/libc/Makefile
+++ lib/libc/Makefile
@@ -177,6 +177,12 @@
 SUBDIR+=	tests
 .endif
 
+# 20170523 Remove stale generated asm files for functions which are no
+# longer syscalls after r318736
+beforebuild:
+	@rm -f ${.OBJDIR}/getdents.[sS] ${.OBJDIR}/lstat.[sS] \
+	    ${.OBJDIR}/mknod.[sS] ${.OBJDIR}/stat.[sS]
+
 .include <bsd.lib.mk>
 
 .if !defined(_SKIP_BUILD)