Index: configure
===================================================================
--- configure	(Revision 23529)
+++ configure	(Arbeitskopie)
@@ -2221,7 +2221,20 @@
 fi
 
 
+echocheck "compiler support of __attribute__((used))"
+_def_attribute_used="#undef HAVE_ATTRIBUTE_USED"
+cat > $TMPC << EOF
+static unsigned long long __attribute__((used)) x = 0xdeadbeefdeadbeefLL, y;
+int main (void) {
+  asm volatile ("movq x, %%mm0\n\t"
+        "movq %%mm0, y\n\t" : :);
+  printf ("%llx\n", y);
+  return 0;
+}
+EOF
+cc_check && _def_attribute_used="#define HAVE_ATTRIBUTE_USED 1" && echores "yes" || echores "no"
 
+
 echocheck "assembler support of -pipe option"
 cat > $TMPC << EOF
 int main(void) { return 0; }
@@ -8353,6 +8373,7 @@
 $_def_armv5te	// only define if you have Enhanced DSP Extensions (ARM)
 $_def_armv6 	// only define if you have ARMv6
 $_def_iwmmxt	// only define if you have XScale IWMMX (ARM)
+$_def_attribute_used	// only define if __attribute__((used)) works
 
 $_def_altivec_h	// enables usage of altivec.h
 
Index: mp3lib/sr1.c
===================================================================
--- mp3lib/sr1.c	(Revision 23529)
+++ mp3lib/sr1.c	(Arbeitskopie)
@@ -460,12 +460,14 @@
     }
     else
 #endif
+#ifdef HAVE_ATTRIBUTE_USED
     if (gCpuCaps.cpuType >= CPUTYPE_I586)
     {
 	synth_func = synth_1to1_pent;
 	mp_msg(MSGT_DECAUDIO,MSGL_V,"mp3lib: using Pentium optimized decore!\n");
     }
     else
+#endif
 #endif /* ARCH_X86_32 */
 #ifdef HAVE_ALTIVEC
     if (gCpuCaps.hasAltiVec)
Index: liba52/imdct.c
===================================================================
--- liba52/imdct.c	(Revision 23529)
+++ liba52/imdct.c	(Arbeitskopie)
@@ -723,7 +723,7 @@
 
 // Stuff below this line is borrowed from libac3
 #include "srfftp.h"
-#if defined(ARCH_X86) || defined(ARCH_X86_64)
+#if (defined(ARCH_X86) || defined(ARCH_X86_64)) && defined(HAVE_ATTRIBUTE_USED)
 #ifndef HAVE_3DNOW
 #define HAVE_3DNOW 1
 #endif
@@ -1071,7 +1071,7 @@
 		: "%"REG_S, "%"REG_D
 	);
 }
-#endif // ARCH_X86 || ARCH_X86_64
+#endif // (ARCH_X86 || ARCH_X86_64) && HAVE_ATTRIBUTE_USED
 
 void a52_imdct_256(sample_t * data, sample_t * delay, sample_t bias)
 {
@@ -1269,7 +1269,7 @@
 	ifft128 = ifft128_c;
 	ifft64 = ifft64_c;
 
-#if defined(ARCH_X86) || defined(ARCH_X86_64)
+#if (defined(ARCH_X86) || defined(ARCH_X86_64)) && defined(HAVE_ATTRIBUTE_USED)
 	if(mm_accel & MM_ACCEL_X86_SSE)
 	{
 	  fprintf (stderr, "Using SSE optimized IMDCT transform\n");
@@ -1288,7 +1288,7 @@
 	  a52_imdct_512 = imdct_do_512_3dnow;
 	}
 	else
-#endif // ARCH_X86 || ARCH_X86_64
+#endif // (ARCH_X86 || ARCH_X86_64) && HAVE_ATTRIBUTE_USED
 #ifdef HAVE_ALTIVEC
         if (mm_accel & MM_ACCEL_PPC_ALTIVEC)
 	{
Index: liba52/resample.c
===================================================================
--- liba52/resample.c	(Revision 23529)
+++ liba52/resample.c	(Arbeitskopie)
@@ -15,7 +15,7 @@
 
 #include "resample_c.c"
 
-#if defined(ARCH_X86) || defined(ARCH_X86_64)
+#if (defined(ARCH_X86) || defined(ARCH_X86_64)) && HAVE_ATTRIBUTE_USED
 #include "resample_mmx.c"
 #endif
 
@@ -26,7 +26,7 @@
 void* a52_resample_init(uint32_t mm_accel,int flags,int chans){
 void* tmp;
 
-#if defined(ARCH_X86) || defined(ARCH_X86_64)
+#if (defined(ARCH_X86) || defined(ARCH_X86_64)) && defined(HAVE_ATTRIBUTE_USED)
     if(mm_accel&MM_ACCEL_X86_MMX){
 	tmp=a52_resample_MMX(flags,chans);
 	if(tmp){