Fix up the code to eliminate warnings

Marlin/Marlin_main.cpp

@@ -388,7 +388,11 @@ const char axis_codes[NUM_AXIS] = {'X', 'Y', 'Z', 'E'};
 static float destination[NUM_AXIS] = { 0, 0, 0, 0 };
 
 static float offset[3] = { 0, 0, 0 };
-static bool home_all_axis = true;
+
+#ifndef DELTA
+  static bool home_all_axis = true;
+#endif
+
 static float feedrate = 1500.0, next_feedrate, saved_feedrate;
 static long gcode_N, gcode_LastN, Stopped_gcode_LastN = 0;
 
@@ -396,8 +400,8 @@ static bool relative_mode = false;  //Determines Absolute or Relative Coordinate
 
 static char cmdbuffer[BUFSIZE][MAX_CMD_SIZE];
 #ifdef SDSUPPORT
-static bool fromsd[BUFSIZE];
+  static bool fromsd[BUFSIZE];
-#endif //!SDSUPPORT
+#endif
 static int bufindr = 0;
 static int bufindw = 0;
 static int buflen = 0;
@@ -1233,10 +1237,6 @@ static void do_blocking_move_to(float x, float y, float z) {
     feedrate = oldFeedRate;
 }
 
-static void do_blocking_move_relative(float offset_x, float offset_y, float offset_z) {
-    do_blocking_move_to(current_position[X_AXIS] + offset_x, current_position[Y_AXIS] + offset_y, current_position[Z_AXIS] + offset_z);
-}
-
 static void setup_for_endstop_move() {
     saved_feedrate = feedrate;
     saved_feedmultiply = feedmultiply;
@@ -2150,7 +2150,6 @@ inline void gcode_G28() {
     }
 
     int verbose_level = 1;
-    float x_tmp, y_tmp, z_tmp, real_z;
 
     if (code_seen('V') || code_seen('v')) {
       verbose_level = code_value_long();
@@ -2436,6 +2435,7 @@ inline void gcode_G28() {
     // When the bed is uneven, this height must be corrected.
     if (!dryrun)
     {
+      float x_tmp, y_tmp, z_tmp, real_z;
       real_z = float(st_get_position(Z_AXIS)) / axis_steps_per_unit[Z_AXIS];  //get the real Z (since the auto bed leveling is already correcting the plane)
       x_tmp = current_position[X_AXIS] + X_PROBE_OFFSET_FROM_EXTRUDER;
       y_tmp = current_position[Y_AXIS] + Y_PROBE_OFFSET_FROM_EXTRUDER;
@@ -3545,7 +3545,6 @@ inline void gcode_M200() {
     }
   }
 
-  float area = .0;
   if (code_seen('D')) {
     float diameter = code_value();
     // setting any extruder filament size disables volumetric on the assumption that
@@ -4283,7 +4282,7 @@ inline void gcode_M502() {
  * M503: print settings currently in memory
  */
 inline void gcode_M503() {
-  Config_PrintSettings(code_seen('S') && code_value == 0);
+  Config_PrintSettings(code_seen('S') && code_value() == 0);
 }
 
 #ifdef ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
@@ -4580,9 +4579,13 @@ inline void gcode_T() {
     SERIAL_ECHOLN(MSG_INVALID_EXTRUDER);
   }
   else {
-    boolean make_move = false;
+    #if EXTRUDERS > 1
+      bool make_move = false;
+    #endif
     if (code_seen('F')) {
+      #if EXTRUDERS > 1
         make_move = true;
+      #endif
       next_feedrate = code_value();
       if (next_feedrate > 0.0) feedrate = next_feedrate;
     }
@@ -5181,12 +5184,10 @@ void ClearToSend()
 
 void get_coordinates()
 {
-  bool seen[4]={false,false,false,false};
   for(int8_t i=0; i < NUM_AXIS; i++) {
     if(code_seen(axis_codes[i]))
     {
       destination[i] = (float)code_value() + (axis_relative_modes[i] || relative_mode)*current_position[i];
-      seen[i]=true;
     }
     else destination[i] = current_position[i]; //Are these else lines really needed?
   }

Marlin/cardreader.cpp

@@ -489,7 +489,7 @@ void CardReader::updir() {
   if (workDirDepth > 0) {
     --workDirDepth;
     workDir = workDirParents[0];
-    for (int d = 0; d < workDirDepth; d++)
+    for (uint16_t d = 0; d < workDirDepth; d++)
       workDirParents[d] = workDirParents[d+1];
   }
 }

Marlin/configurator/config/language.h

@@ -62,6 +62,7 @@
 #endif
 
 #ifdef CUSTOM_MENDEL_NAME
+  #undef MACHINE_NAME
   #define MACHINE_NAME CUSTOM_MENDEL_NAME
 #endif
 

Marlin/language.h

@@ -62,6 +62,7 @@
 #endif
 
 #ifdef CUSTOM_MENDEL_NAME
+  #undef MACHINE_NAME
   #define MACHINE_NAME CUSTOM_MENDEL_NAME
 #endif
 

Marlin/pins.h

@@ -167,12 +167,18 @@
 #endif
 
 #ifdef DISABLE_MAX_ENDSTOPS
+  #undef X_MAX_PIN
+  #undef Y_MAX_PIN
+  #undef Z_MAX_PIN
   #define X_MAX_PIN          -1
   #define Y_MAX_PIN          -1
   #define Z_MAX_PIN          -1
 #endif
 
 #ifdef DISABLE_MIN_ENDSTOPS
+  #undef X_MIN_PIN
+  #undef Y_MIN_PIN
+  #undef Z_MIN_PIN
   #define X_MIN_PIN          -1
   #define Y_MIN_PIN          -1
   #define Z_MIN_PIN          -1

Marlin/planner.cpp

@@ -701,12 +701,12 @@ float junction_deviation = 0.1;
 
   int moves_queued = movesplanned();
 
-  // slow down when de buffer starts to empty, rather than wait at the corner for a buffer refill
+  // Slow down when the buffer starts to empty, rather than wait at the corner for a buffer refill
+  #if defined(OLD_SLOWDOWN) || defined(SLOWDOWN)
     bool mq = moves_queued > 1 && moves_queued < BLOCK_BUFFER_SIZE / 2;
     #ifdef OLD_SLOWDOWN
       if (mq) feed_rate *= 2.0 * moves_queued / BLOCK_BUFFER_SIZE;
     #endif
-
     #ifdef SLOWDOWN
       //  segment time im micro seconds
       unsigned long segment_time = lround(1000000.0/inverse_second);
@@ -720,7 +720,7 @@ float junction_deviation = 0.1;
         }
       }
     #endif
-  //  END OF SLOW DOWN SECTION    
+  #endif
 
   block->nominal_speed = block->millimeters * inverse_second; // (mm/sec) Always > 0
   block->nominal_rate = ceil(block->step_event_count * inverse_second); // (step/sec) Always > 0

Marlin/qr_solve.cpp

@@ -607,7 +607,6 @@ double dnrm2 ( int n, double x[], int incx )
   double norm;
   double scale;
   double ssq;
-  double value;
 
   if ( n < 1 || incx < 1 )
   {

Marlin/stepper.cpp

@@ -85,18 +85,24 @@ static volatile bool endstop_z_hit = false;
   int motor_current_setting[3] = DEFAULT_PWM_MOTOR_CURRENT;
 #endif
 
-static bool old_x_min_endstop = false,
+#if defined(X_MIN_PIN) && X_MIN_PIN >= 0
-            old_x_max_endstop = false,
+  static bool old_x_min_endstop = false;
-            old_y_min_endstop = false,
+#endif
-            old_y_max_endstop = false,
+#if defined(X_MAX_PIN) && X_MAX_PIN >= 0
-            old_z_min_endstop = false,
+  static bool old_x_max_endstop = false;
-            #ifndef Z_DUAL_ENDSTOPS
+#endif
-            old_z_max_endstop = false;
+#if defined(Y_MIN_PIN) && Y_MIN_PIN >= 0
-            #else
+  static bool old_y_min_endstop = false;
-              old_z_max_endstop = false,
+#endif
-              old_z2_min_endstop = false,
+#if defined(Y_MAX_PIN) && Y_MAX_PIN >= 0
-              old_z2_max_endstop = false;
+  static bool old_y_max_endstop = false;
-            #endif
+#endif
+
+static bool old_z_min_endstop = false, old_z_max_endstop = false;
+
+#ifdef Z_DUAL_ENDSTOPS
+  static bool old_z2_min_endstop = false, old_z2_max_endstop = false;
+#endif
 
 static bool check_endstops = true;
 
@@ -1176,8 +1182,6 @@ void digipot_current(uint8_t driver, int current) {
 }
 
 void microstep_init() {
-  const uint8_t microstep_modes[] = MICROSTEP_MODES;
-
   #if defined(E1_MS1_PIN) && E1_MS1_PIN >= 0
     pinMode(E1_MS1_PIN,OUTPUT);
     pinMode(E1_MS2_PIN,OUTPUT); 
@@ -1192,7 +1196,9 @@ void microstep_init() {
     pinMode(Z_MS2_PIN,OUTPUT);
     pinMode(E0_MS1_PIN,OUTPUT);
     pinMode(E0_MS2_PIN,OUTPUT);
-    for (int i = 0; i <= 4; i++) microstep_mode(i, microstep_modes[i]);
+    const uint8_t microstep_modes[] = MICROSTEP_MODES;
+    for (int i = 0; i < sizeof(microstep_modes) / sizeof(microstep_modes[0]); i++)
+      microstep_mode(i, microstep_modes[i]);
   #endif
 }
 

Marlin/ultralcd.h

@@ -17,9 +17,8 @@
   #ifdef DOGLCD
     extern int lcd_contrast;
     void lcd_setcontrast(uint8_t value);
-  #endif
-
     static unsigned char blink = 0; // Variable for visualization of fan rotation in GLCD
+  #endif
 
   #define LCD_MESSAGEPGM(x) lcd_setstatuspgm(PSTR(x))
   #define LCD_ALERTMESSAGEPGM(x) lcd_setalertstatuspgm(PSTR(x))