misc: Fix more build warnings uncovered with GCC15 and -Wunused-const-variable

Change-Id: I43f5d03d8496b2ac8b30df30b14d1c6e816ef0e2

apps/menus/theme_menu.c

@@ -211,7 +211,9 @@ MENUITEM_SETTING(remote_statusbar, &global_settings.remote_statusbar,
                                                     statusbar_callback_remote);
 #endif
 MENUITEM_SETTING(volume_type, &global_settings.volume_type, NULL);
+#if (CONFIG_BATTERY_MEASURE != 0)
 MENUITEM_SETTING(battery_display, &global_settings.battery_display, NULL);
+#endif
 MAKE_MENU(bars_menu, ID2P(LANG_BARS_MENU), 0, Icon_NOICON,
           &scrollbar_item, &scrollbar_width, &statusbar,
 #ifdef HAVE_REMOTE_LCD

apps/plugins/pitch_detector.c

@@ -143,6 +143,7 @@ typedef int32_t fixed;
 #define LCD_FACTOR (fp_div(int2fixed(LCD_WIDTH), int2fixed(100)))
 /* The threshold for the YIN algorithm */
 #define DEFAULT_YIN_THRESHOLD 5  /* 0.10 */
+#ifndef SIMULATOR
 static const fixed yin_threshold_table[] IDATA_ATTR =
 {
     float2fixed(0.01),
@@ -160,6 +161,7 @@ static const fixed yin_threshold_table[] IDATA_ATTR =
     float2fixed(0.45),
     float2fixed(0.50),
 };
+#endif /* !SIMULATOR */
 
 /* Structure for the reference frequency (frequency of A)
  * It's used for scaling the frequency before finding out

lib/rbcodec/codecs/libayumi/lzh.c

@@ -209,7 +209,7 @@ int make_table(int nchar, uchar * bitlen, int tablebits, ushort * table)
 }
 
 /* huf.c */
-#if (__GNUC__ == 14) // XXX nuke later?
+#if (__GNUC__ >= 14) // XXX nuke later?
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wstringop-overflow"
 #endif

lib/rbcodec/codecs/libopus/celt/celt_lpc.c

@@ -207,7 +207,7 @@ void celt_iir(const opus_val32 *_x,
 #endif
 }
 
-#if (__GNUC__ == 14) // XXX nuke later?
+#if (__GNUC__ >= 14) // XXX nuke later?
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
 #endif