diff -Naur busybox-1.29.2/coreutils/cp.c busybox-1.29.2-alx/coreutils/cp.c
--- busybox-1.29.2/coreutils/cp.c	2018-07-02 13:23:06.000000000 +0200
+++ busybox-1.29.2-alx/coreutils/cp.c	2018-08-15 15:47:47.942380380 +0200
@@ -85,7 +85,7 @@
 		// -r and -R are the same
 		// -R (and therefore -r) turns on -d (coreutils does this)
 		// -a = -pdR
-		"-2:l--s:s--l:Pd:rRd:Rd:apdR",
+		"-2:l--s:s--l:Pd:rRd:Rd:xapdR",
 		"archive\0"        No_argument "a"
 		"force\0"          No_argument "f"
 		"interactive\0"    No_argument "i"
@@ -97,6 +97,7 @@
 		"no-target-directory\0" No_argument "T"
 		"verbose\0"        No_argument "v"
 		"update\0"         No_argument "u"
+		"one-file-system\0" No_argument "x"
 		"remove-destination\0" No_argument "\xff"
 		"parents\0"        No_argument "\xfe"
 	);
@@ -104,7 +105,7 @@
 	flags = getopt32(argv, "^"
 		FILEUTILS_CP_OPTSTR
 		"\0"
-		"-2:l--s:s--l:Pd:rRd:Rd:apdR"
+		"-2:l--s:s--l:Pd:rRd:Rd:xapdR"
 	);
 #endif
 	/* Options of cp from GNU coreutils 6.10: