http://bugzilla.novell.com/show_bug.cgi?id=936463 http://bugzilla.novell.com/show_bug.cgi?id=936463#c18 --- Comment #18 from Stanislav Brabec --- Thank for the notes. avr-libc and avr-gcc is now in CrossToolchain:avr project. As they are now in /opt/cross prefix, they cannot be accepted to Factory. My goal is: - Move both from /opt/cross to /usr, so they could be candidates for Factory. - Compile avr-libc with gcc5. - Make avr-gcc completely empty, just keep small wrappers with convenient names, preconfigured to make them compatible with Arduino and other tools (i. e. linking against avr-libc). Maybe wrappers will not be needed at all. I will start with experiments on your branch. AVR (at least that 8-bit one) would probably need a special handling in some cases. Regarding libgcc.a: I just checked libgcc.a from cross-avr-gcc-4.8.3 and the one I built by "make all-target" in cross-avr-gcc5-5.1.1+r223279 chroot. Both contain nearly the same functions (99.9% match). More than 90% of them are helpers for mathematical functions that compiler can reference. Other interesting are __main.o, enable-execute-stack.o and few others. => Most of these functions are completely independent on target includes. Only few are. The AVR-failing unwind-dw2.o is one of few exceptions. I am just guessing that these functions are required even for stage1. Native libgcc.a has technically very similar contents: about 90% of mathematical helpers. Just function names are different. -- You are receiving this mail because: You are on the CC list for the bug.