When building Animated_Eyes_2.ino for 2 eyes undefined reference to `_Z10user_setupv' and others #3825
Description
When building Animated_Eyes_2.ino for 2 eyes with
#include <User_Setups/Setup46_GC9A01_ESP32.h> // Setup file for ESP32 and GC9A01 SPI bus TFT 240x240
#define GC9A01_DRIVER
#define TFT_SDA_READ // This option is for ESP32 ONLY, tested with ST7789 and GC9A01 display only
#define TFT_WIDTH 240 // ST7789 240 x 240 and 240 x 320
#define TFT_HEIGHT 240 // GC9A01 240 x 240
Produces these errors
/sketch/Animated_Eyes_2.ino.cpp.o:(.literal._Z5setupv+0x10): undefined reference to _Z10user_setupv' /sketch/Animated_Eyes_2.ino.cpp.o:(.literal._Z5framet+0x64): undefined reference to _Z9user_loopv'
/sketch/Animated_Eyes_2.ino.cpp.o: in function _Z5setupv': Animated_Eyes_2.ino:101:(.text._Z5setupv+0x1b): undefined reference to _Z10user_setupv'
/sketch/Animated_Eyes_2.ino.cpp.o: in function _Z5framet': /Animated_Eyes_2/eye_functions.ino:383:(.text._Z5framet+0x32c): undefined reference to _Z9user_loopv'