--- Csound5.10.1/InOut/rtalsa.c.orig	2008-12-15 21:18:39.000000000 +0000
+++ Csound5.10.1/InOut/rtalsa.c	2009-03-31 00:28:48.000000000 +0100
@@ -45,6 +45,7 @@
 #include <sys/select.h>
 #include <termios.h>
 #include <errno.h>
+#define _POSIX_C_SOURCE 1
 #include <alsa/asoundlib.h>
 #include <sched.h>
 #include <unistd.h>
