l can't find data_penguin_jpg[] and data_penguin_jpg_len

[BrickerZou]

extern unsigned char data_penguin_jpg[] in main.c
But l can't find it in other.c
?

[AndreRenaud]

Hi. The penguin C code is automatically generated from the data/penguin.jpg file. If you look in the Makefile, you'll see there is a rule involving xxd to convert the .jpg data into a C array so we can access it in code.