Index: apps/plugins/pdbox/PDa/src/m_sched.c
===================================================================
--- apps/plugins/pdbox/PDa/src/m_sched.c	(revision 21272)
+++ apps/plugins/pdbox/PDa/src/m_sched.c	(working copy)
@@ -14,8 +14,10 @@
 
 
 /* T.Grill - enable PD global thread locking - sys_lock, sys_unlock, sys_trylock functions */
-#define THREAD_LOCKING  
+#ifndef ROCKBOX
+#define THREAD_LOCKING
 #include "pthread.h"
+#endif
 
 
 static int sys_quit;
@@ -169,10 +171,15 @@
     	sched_diddsp, sched_didpoll, sched_didnothing);
 }
 
+#ifndef ROCKBOX
 static int sys_histphase;
+#endif
 
 int sys_addhist(int phase)
 {
+#ifdef ROCKBOX
+    (void) phase;
+#endif
 #ifndef FIXEDPOINT
     int i, j, phasewas = sys_histphase;
     t_time newtime = sys_getrealtime();
@@ -216,7 +223,11 @@
 
 void glob_audiostatus(void)
 {
+#ifdef ROCKBOX
+    int nresync, nresyncphase, i;
+#else
     int dev, nresync, nresyncphase, i;
+#endif
     nresync = (oss_nresync >= NRESYNC ? NRESYNC : oss_nresync);
     nresyncphase = oss_resyncphase - 1;
     post("audio I/O error history:");
@@ -251,7 +262,9 @@
     if (type != ERR_NOTHING && !sched_diored &&
     	(sched_diddsp >= sched_dioredtime))
     {
+#ifndef ROCKBOX
     	sys_vgui("pdtk_pd_dio 1\n");
+#endif
 	sched_diored = 1;
     }
     sched_dioredtime =
@@ -266,10 +279,15 @@
 static void sched_pollformeters( void)
 {
     int inclip, outclip, indb, outdb;
+#ifdef ROCKBOX
+    static int sched_nextmeterpolltime;
+#else
     static int sched_nextmeterpolltime, sched_nextpingtime;
+#endif
 
     	/* if there's no GUI but we're running in "realtime", here is
 	where we arrange to ping the watchdog every 2 seconds. */
+#ifndef ROCKBOX
 #ifdef __linux__
     if (sys_nogui && sys_hipriority && (sched_diddsp - sched_nextpingtime > 0))
     {
@@ -279,12 +297,15 @@
 	    (2* sys_dacsr) /(int)sys_schedblocksize;
     }
 #endif
+#endif /* ROCKBOX */
 
     if (sched_diddsp - sched_nextmeterpolltime < 0)
     	return;
     if (sched_diored && (sched_diddsp - sched_dioredtime > 0))
     {
+#ifndef ROCKBOX
     	sys_vgui("pdtk_pd_dio 0\n");
+#endif
 	sched_diored = 0;
     }
     if (sched_meterson)
@@ -304,7 +325,9 @@
     if (inclip != sched_lastinclip || outclip != sched_lastoutclip
     	|| indb != sched_lastindb || outdb != sched_lastoutdb)
     {
+#ifndef ROCKBOX
     	sys_vgui("pdtk_pd_meters %d %d %d %d\n", indb, outdb, inclip, outclip);
+#endif
 	sched_lastinclip = inclip;
 	sched_lastoutclip = outclip;
 	sched_lastindb = indb;
@@ -316,6 +339,9 @@
 
 void glob_meters(void *dummy, float f)
 {
+#ifdef ROCKBOX
+    (void) dummy;
+#endif
     if (f == 0)
     	sys_getmeters(0, 0);
     sched_meterson = (f != 0);
@@ -390,7 +416,9 @@
 
 int m_scheduler_pda( void)
 {
+#ifndef ROCKBOX
     int idlecount = 0;
+#endif
     sys_time_per_dsp_tick = (TIMEUNITPERSEC) *
     	((double)sys_schedblocksize) / sys_dacsr;
 
@@ -405,11 +433,15 @@
     sys_initmidiqueue();
     while (!sys_quit)
     {
+#ifndef ROCKBOX
     	int didsomething = 0;
+#endif
     	int timeforward;
 
       	sys_addhist(0);
+#ifndef ROCKBOX
     waitfortick:
+#endif
     	if (sched_usedacs)
     	{
     	    timeforward = sys_send_dacs();
@@ -564,7 +596,7 @@
 
 void sys_lock(void) {}
 void sys_unlock(void) {}
-int sys_trylock(void) {}
+int sys_trylock(void) { return 0; }
 
 #endif