diff -Nurd mpg123-1.32.3.orig/src/libout123/modules/sdl.c mpg123-1.32.3/src/libout123/modules/sdl.c
--- mpg123-1.32.3.orig/src/libout123/modules/sdl.c	2023-10-02 08:47:32.000000000 -0400
+++ mpg123-1.32.3/src/libout123/modules/sdl.c	2023-11-04 22:51:11.000000000 -0400
@@ -6,6 +6,8 @@
 	initially written by Nicholas J. Humfrey
 */
 
+#include <string.h>
+
 /* Want usleep */
 #define _XOPEN_SOURCE 500
 #define _DEFAULT_SOURCE