no stdint.h file on Debian

#include_next is used to let one file augment another one with the same name. In this case, it seems the "other one" is not available.

I got the same error trying to compile my code using the gcc-arm package in Linux Mint, gcc-arm-none-eabi. I got past this problem by installing libnewlib-arm-none-eabi: sudo apt-get install libnewlib-arm-none-eabi

try this:

apt-get install avr-libc

Hmm, my answer is not suit for ARM, just wish other avr users can get help when they meet the same question.