http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48459
--- Comment #22 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2011-06-14
16:32:08 UTC ---
(In reply to comment #20)
> (In reply to comment #19)
> > > A full build for AVR fails, but that seems to be related to other
> > > open bugs.
> >
> > What bugs?
>
> Perhaps I shouldn't assume.
>
> ../../../../../../comb/newlib/libc/search/hash.c: In function
> ‘__expand_table’:
> ../../../../../../comb/newlib/libc/search/hash.c:898:1: error: unable to find
> a
> register to spill in class ‘POINTER_REGS’
> ../../../../../../comb/newlib/libc/search/hash.c:898:1: error: this is the
> insn:
> (insn 190 97 191 10 (set (reg:QI 18 r18)
> (mem/c:QI (plus:HI (reg/f:HI 28 r28)
> (const_int 5 [0x5])) [14 S1 A8]))
> ../../../../../../comb/newlib/libc/search/hash.c:886 4 {*movqi}
> (nil))
> ../../../../../../comb/newlib/libc/search/hash.c:898:1: internal compiler
> error: in spill_failure, at reload1.c:2113
Oh, I doubt newlib works with avr-gcc. There is just one libc implementation
that cooperates with avr-gcc: avr-libc from
http://avr-libc.nongnu.org/
Note that avr-libc does not support in-tree builds, just set --host=avr
CC=/your/avr-gcc
