Lekensteyn added a comment. Without this patch, compilation of a program using avr/io.h fails. Tested with:
clang --target=avr -Xclang -target-cpu -Xclang atmega328p -I/usr/avr/include -Os led.c -c -o /dev/null Btw, it seems that avr-libc 2.0.0 also uses `__AVR_ARCH__`, `__AVR_XMEGA__` and `__AVR_3_BYTE_PC__` in some places, but these are not defined in Clang. https://reviews.llvm.org/D29817 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
