Fixed bugs in the altivec detection, courtesy of Michel Lanners <mlan@cpu.lu>.

configure.in

@@ -338,11 +338,11 @@ fi
 
 AC_CACHE_CHECK([if \$CC groks Altivec inline assembly],
     [ac_cv_altivec_inline],
-    [AC_TRY_COMPILE(,[void quux(){asm("mtspr 256,%0"::"r"(-1));}],
+    [AC_TRY_COMPILE(,[void quux(){asm("vperm 0,1,2,3");}],
          ac_cv_altivec_inline=yes,
          [save_CFLAGS=$CFLAGS
           CFLAGS="$CFLAGS -Wa,-m7400"
-          AC_TRY_COMPILE(,[void quux(){asm("mtspr 256,%0"::"r"(-1));}],
+          AC_TRY_COMPILE(,[void quux(){asm("vperm 0,1,2,3");}],
             [ac_cv_altivec_inline=yes; CFLAGS_ALTIVEC="-Wa,-m7400"],
             ac_cv_altivec_inline=no)
           CFLAGS=$save_CFLAGS

plugins/motion/Makefile

@@ -50,7 +50,7 @@ $(BUILTIN_MOTION3DNOW): BUILTIN_MOTION3DNOW_%.o: %.c
 
 $(BUILTIN_MOTIONALTIVEC): BUILTIN_MOTIONALTIVEC_%.o: .dep/%.d
 $(BUILTIN_MOTIONALTIVEC): BUILTIN_MOTIONALTIVEC_%.o: %.c
-	$(CC) $(CFLAGS) $(CFLAGS_ALTIVEC) -DBUILTIN -DMODULE_NAME=motionaltivec -faltivec -c -o $@ $<
+	$(CC) $(CFLAGS) $(CFLAGS_ALTIVEC) -DBUILTIN -DMODULE_NAME=motionaltivec -c -o $@ $<
 
 #
 # Real targets