There has never been an arch-specific optimized implementation of str[n]dup, nor is there likely to ever be one, because unlike their cousins strlen(), strcpy() and similar that simply read/write the src/dst, the dup functions by definition involve memory allocation. So drop this irrelevant cpp guard. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Rasmus Villemoes <ravi@prevas.dk>