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Re: [avr-gcc-list] avr-libc-1.7.0 fails to compile
From: |
Joerg Wunsch |
Subject: |
Re: [avr-gcc-list] avr-libc-1.7.0 fails to compile |
Date: |
Wed, 3 Nov 2010 15:25:02 +0100 |
User-agent: |
Mutt/1.5.20 (2009-06-14) |
As Georg Lay wrote:
> Thanks, that works. Now using 3.81 instead of 3.80.
Yes, Dmitry introduced some pattern derivations that require 3.81.
> One more question: How does avr-libs determine if a specific target is
> supported or not?
See configure.ac: it tries to test-compile a minimal piece of code,
and relies on GCC's exit code to see whether the respective -mmcu
option value is acceptable or not. GCC currently has a bug in that it
doesn't correctly report an error status if the -mmcu option value is
not actually supported (GCC bug #45261); instead, it relies on the
assembler to fail. So if your binutils support a device the compiler
doesn't support, the decision will be wrong.
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
- RE: [avr-gcc-list] avr-libc-1.7.0 fails to compile, (continued)
- Re: [avr-gcc-list] avr-libc-1.7.0 fails to compile, Joerg Wunsch, 2010/11/02
- RE: [avr-gcc-list] avr-libc-1.7.0 fails to compile, Weddington, Eric, 2010/11/02
- Re: [avr-gcc-list] avr-libc-1.7.0 fails to compile, Georg Lay, 2010/11/03
- Re: [avr-gcc-list] avr-libc-1.7.0 fails to compile,
Joerg Wunsch <=
- RE: [avr-gcc-list] avr-libc-1.7.0 fails to compile, Weddington, Eric, 2010/11/03
- Re: [avr-gcc-list] avr-libc-1.7.0 fails to compile, Georg Lay, 2010/11/03
- Re: [avr-gcc-list] avr-libc-1.7.0 fails to compile, Joerg Wunsch, 2010/11/03