run ci with -DCMAKE_BUILD_TYPE=MinSizeRel

hw/bsp/stm32f7/family.c

@@ -143,9 +143,19 @@ void board_init(void)
   GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
+// Suppress warning caused by mcu driver
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wshadow"
+#endif
+
   /* Enable USB FS Clocks */
   __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
 
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+
 #if OTG_FS_VBUS_SENSE
   /* Configure VBUS Pin */
   GPIO_InitStruct.Pin = GPIO_PIN_9;

hw/bsp/stm32f7/family.mk

@@ -33,7 +33,7 @@ CFLAGS_GCC += \
   -nostdlib -nostartfiles
 
 # mcu driver cause following warnings
-CFLAGS_GCC += -Wno-error=shadow -Wno-error=cast-align
+CFLAGS_GCC += -Wno-error=cast-align
 
 # -----------------
 # Sources & Include