uart_commands.c: eeprom_update_block() also utilized in avr-libc > 1.8.1

src/uart/uart_commands.c

@@ -50,8 +50,9 @@ extern volatile unsigned char reverseMode;
 
 #define CR "\r\n"
 
-#if (!(defined(eeprom_update_block) && \
-	((E2PAGESIZE == 2) || (E2PAGESIZE == 4) || (E2PAGESIZE == 8)))) || \
+#if ((__AVR_LIBC_MAJOR__ < 1) || \
+    ((__AVR_LIBC_MAJOR__ == 1) && (__AVR_LIBC_MINOR__ < 7))) || \
+    ((E2PAGESIZE != 2) && (E2PAGESIZE != 4) && (E2PAGESIZE != 8)) || \
     !defined(ANIMATION_TESTS) || !(defined(SCROLLTEXT_SUPPORT))
 char const UART_STR_NOTIMPL[] PROGMEM = "Not implemented."CR;
 #endif
@@ -145,7 +146,8 @@ static void uartcmd_clear_buffer(void) {
  * Erases the complete EEPROM to reset counters and high score tables.
  */
 static void uartcmd_erase_eeprom(void) {
-#if defined(eeprom_update_block) && \
+#if ((__AVR_LIBC_MAJOR__ > 1) || \
+    ((__AVR_LIBC_MAJOR__ == 1) && (__AVR_LIBC_MINOR__ >= 7)))  && \
     ((E2PAGESIZE == 2) || (E2PAGESIZE == 4) || (E2PAGESIZE == 8))
 	uint8_t const eeclear[] =
 #	if E2PAGESIZE == 8