Fix compilation warnings during linux build

openrtx/src/core/audio_codec.c

@@ -57,9 +57,11 @@ static uint64_t         dataBuffer[BUF_SIZE];
 static const uint8_t micGainPre  = 4;
 static const uint8_t micGainPost = 3;
 #else
+#ifndef PLATFORM_LINUX
 static const uint8_t micGainPre  = 8;
 static const uint8_t micGainPost = 4;
 #endif
+#endif
 
 static void *encodeFunc(void *arg);
 static void *decodeFunc(void *arg);
@@ -189,7 +191,7 @@ static void *encodeFunc(void *arg)
 {
 
     streamId        iStream;
-    pathId          iPath = (pathId) arg;
+    pathId          iPath = *((pathId*) arg);
     stream_sample_t audioBuf[320];
     struct CODEC2   *codec2;
     filter_state_t  dcrState;
@@ -269,7 +271,7 @@ static void *encodeFunc(void *arg)
 static void *decodeFunc(void *arg)
 {
     streamId        oStream;
-    pathId          oPath = (pathId) arg;
+    pathId          oPath = *((pathId*) arg);
     stream_sample_t audioBuf[320];
     struct CODEC2   *codec2;
 
@@ -411,7 +413,7 @@ static bool startThread(const pathId path, void *(*func) (void *))
     #endif
 
     // Start thread
-    int ret = pthread_create(&codecThread, &codecAttr, func, ((void *) audioPath));
+    int ret = pthread_create(&codecThread, &codecAttr, func, &audioPath);
     if(ret < 0)
         running = false;
 

openrtx/src/core/voicePromptUtils.c

@@ -177,7 +177,7 @@ void vp_announcePower(const uint32_t power, const vpQueueFlags_t flags)
     // Compute x.y format avoiding to pull in floating point math.
     // Remember that power is expressed in mW!
     char buffer[16] = "\0";
-    sniprintf(buffer, 16, "%lu.%lu", (power / 1000), (power % 1000) / 100);
+    sniprintf(buffer, 16, "%lu.%lu", (power / 1000lu), (power % 1000lu) / 100lu);
 
     vp_queueString(buffer, vpAnnounceCommonSymbols);
     vp_queuePrompt(PROMPT_WATTS);

openrtx/src/rtx/OpMode_M17.cpp

@@ -78,6 +78,7 @@ void OpMode_M17::disable()
 
 void OpMode_M17::update(rtxStatus_t *const status, const bool newCfg)
 {
+    (void) newCfg;
     #if defined(PLATFORM_MD3x0) || defined(PLATFORM_MDUV3x0)
     //
     // Invert TX phase for all MDx models.

openrtx/src/ui/default/ui_main.c

@@ -193,7 +193,7 @@ void _ui_drawFrequency()
 
     // Print big numbers frequency
     char freq_str[16] = {0};
-    sniprintf(freq_str, sizeof(freq_str), "%lu.%lu", (freq / 1000000), (freq % 1000000));
+    sniprintf(freq_str, sizeof(freq_str), "%lu.%lu", (freq / 1000000lu), (freq % 1000000lu));
     stripTrailingZeroes(freq_str);
 
     gfx_print(layout.line3_large_pos, layout.line3_large_font, TEXT_ALIGN_CENTER,

platform/drivers/display/display_libSDL.c

@@ -43,6 +43,7 @@ extern chan_t fb_sync;       /* Shared channel to send a frame buffer update */
 /* Custom SDL Event to adjust backlight */
 extern Uint32 SDL_Backlight_Event;
 
+#ifndef CONFIG_PIX_FMT_RGB565
 /**
  * @internal
  * Internal helper function which fetches pixel at position (x, y) from framebuffer
@@ -52,6 +53,7 @@ static uint32_t fetchPixelFromFb(unsigned int x, unsigned int y, void *fb)
 {
     (void) x;
     (void) y;
+    (void) fb;
     uint32_t pixel = 0;
 
     #ifdef CONFIG_PIX_FMT_BW
@@ -78,7 +80,7 @@ static uint32_t fetchPixelFromFb(unsigned int x, unsigned int y, void *fb)
 
     return pixel;
 }
-
+#endif
 
 void display_init()
 {