Suppress U8glib build warnings

Marlin/src/HAL/HAL_DUE/u8g_com_HAL_DUE_shared_hw_spi.cpp

@@ -62,7 +62,10 @@
 
 #if ENABLED(DOGLCD)
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 
 #include "../../Marlin.h"
 

Marlin/src/HAL/HAL_DUE/u8g_com_HAL_DUE_st7920_sw_spi.cpp

@@ -59,7 +59,10 @@
 
 #if ENABLED(DOGLCD)
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 #include <Arduino.h>
 #include "../Delay.h"
 

Marlin/src/HAL/HAL_LPC1768/u8g_com_HAL_LPC1768_hw_spi.cpp

@@ -60,7 +60,10 @@
 #if ENABLED(DOGLCD)
 
 //#include <inttypes.h>
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 
 #define SPI_FULL_SPEED 0
 #define SPI_HALF_SPEED 1

Marlin/src/HAL/HAL_LPC1768/u8g_com_HAL_LPC1768_ssd_hw_i2c.cpp

@@ -81,7 +81,10 @@
 
 #if ENABLED(DOGLCD)
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 
 #define I2C_SLA         (0x3C*2)
 //#define I2C_CMD_MODE  0x080

Marlin/src/HAL/HAL_LPC1768/u8g_com_HAL_LPC1768_st7920_hw_spi.cpp

@@ -60,7 +60,10 @@
 #if ENABLED(DOGLCD)
 
 //#include <inttypes.h>
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 #include "../Delay.h"
 
 #define SPI_FULL_SPEED 0

Marlin/src/HAL/HAL_LPC1768/u8g_com_HAL_LPC1768_st7920_sw_spi.cpp

@@ -59,7 +59,10 @@
 
 #if ENABLED(DOGLCD)
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 #include "SoftwareSPI.h"
 #include "../Delay.h"
 

Marlin/src/HAL/HAL_LPC1768/u8g_com_HAL_LPC1768_sw_spi.cpp

@@ -59,7 +59,10 @@
 
 #if ENABLED(DOGLCD)
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 #include "SoftwareSPI.h"
 
 #define SPI_SPEED 2  // About 2 MHz

Marlin/src/lcd/dogm/u8g_dev_ssd1306_sh1106_128x64_I2C.cpp

@@ -69,7 +69,10 @@
 
 #if ENABLED(DOGLCD)
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 #include "HAL_LCD_com_defines.h"
 
 #define WIDTH 128

Marlin/src/lcd/dogm/u8g_dev_st7565_64128n_HAL.cpp

@@ -57,7 +57,10 @@
 
 #if ENABLED(DOGLCD)
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 
 #include "HAL_LCD_com_defines.h"
 

Marlin/src/lcd/dogm/u8g_dev_st7920_128x64_HAL.cpp

@@ -57,7 +57,10 @@
 
 #if ENABLED(DOGLCD)
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 
 #include "HAL_LCD_com_defines.h"
 

Marlin/src/lcd/dogm/u8g_dev_uc1701_mini12864_HAL.cpp

@@ -61,7 +61,10 @@
 
 #if ENABLED(DOGLCD)
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 
 #include "HAL_LCD_com_defines.h"
 

Marlin/src/lcd/dogm/ultralcd_st7920_u8glib_rrd_AVR.cpp

@@ -42,7 +42,10 @@
 #define LCD_PIXEL_WIDTH 128
 #define LCD_PIXEL_HEIGHT 64
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 
 //set optimization so ARDUINO optimizes this file
 #pragma GCC optimize (3)

Marlin/src/lcd/lcdprint_u8g.cpp

@@ -11,7 +11,10 @@
 
 #if ENABLED(DOGLCD)
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
 extern U8GLIB *pu8g;
 #define _lcd_write(a) pu8g->print(a)
 #define _lcd_setcursor(col, row) pu8g->setPrintPos((col), (row));

Marlin/src/lcd/ultralcd.cpp

@@ -103,9 +103,7 @@ uint8_t lcd_status_update_delay = 1, // First update one loop delayed
 
 #if ENABLED(DOGLCD)
   #include "ultralcd_impl_DOGM.h"
-  #include <U8glib.h>
+  bool drawing_screen, first_page; // = false
-  bool drawing_screen, // = false
-       first_page;
 #else
   #include "ultralcd_impl_HD44780.h"
   constexpr bool first_page = true;

Marlin/src/lcd/ultralcd_impl_DOGM.h

@@ -58,7 +58,11 @@
   #include "../libs/duration_t.h"
 #endif
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wuninitialized"
 #include <U8glib.h>
+#pragma GCC diagnostic pop
+
 #include "fontutils.h"
 #include "u8g_fontutf8.h"