> -----Original Message----- > From: > avr-gcc-list-bounces+eric.weddington=atmel....@nongnu.org > [mailto:avr-gcc-list-bounces+eric.weddington=atmel....@nongnu. > org] On Behalf Of Joerg Wunsch > Sent: Wednesday, November 03, 2010 8:25 AM > To: Georg Lay > Cc: avr-gcc-list@nongnu.org > Subject: Re: [avr-gcc-list] avr-libc-1.7.0 fails to compile > > 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. >
And just to be clear, we will fix that bug so that GCC will properly error out. _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
