--- cdrtools-2.01/cdda2wav/cdda2wav.c	2006-01-06 17:58:34.000000000 +0100
+++ cdrtools-2.01/cdda2wav/cdda2wav.c	2006-01-06 13:03:18.000000000 +0100
@@ -970,7 +970,7 @@
 	dontneedroot();
 }
 #else
-#if      defined _POSIX_PRIORITY_SCHEDULING
+#if defined(_POSIX_PRIORITY_SCHEDULING) && _POSIX_PRIORITY_SCHEDULING -0 >= 0
 #include <sched.h>
 
 static void
@@ -2616,7 +2616,7 @@
   if ( global.verbose != 0 ) {
     fputs( "#Cdda2wav version ", stderr );
     fputs( VERSION, stderr );
-#if defined _POSIX_PRIORITY_SCHEDULING || defined HAVE_SYS_PRIOCNTL_H
+#if defined(_POSIX_PRIORITY_SCHEDULING) && _POSIX_PRIORITY_SCHEDULING -0 >= 0 || defined HAVE_SYS_PRIOCNTL_H
     fputs( ", real time sched.", stderr );
 #endif
 #if defined ECHO_TO_SOUNDCARD