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--- a/src/config.h.in
+++ b/src/config.h.in
@@ -5,6 +5,9 @@
 
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the <byteswap.h> header file. */
+#undef HAVE_BYTESWAP_H
 
 /* Define to 1 if you have the `asound' library (-lasound). */
 #undef HAVE_LIBASOUND