Re: [avr-libc-dev] [bug #28837] using PSTR with C++ produces warnings

[Georg-Johann Lay]

Volker Kuhlmann wrote:
> Quick heads-up before I rush to work
> 
> On Tue 01 Nov 2011 03:08:57 NZDT +1300, Jörg Wunsch wrote:
> 
>> the newer versions a try.  GCC 4.6.2 has just been released, so it's a
>> good idea to peek at his work by trying it.
> 
> I've been trying for 3 days now (incl half a weekend) to get 4.6.2 to
> compile and I have to say build instructions are shockingly bad. What
> worked for 4.3.3 just wasted 3 days for me.

I'd suggest not wasting more than one day on a issue. If you cannot solve the
problem in that time, come up and ask; for example in a place like here.

> Asking for the critical bits on avr-gcc brought up basically nothing,
> which suggests to me nobody really actually knows.

You can browse the http://gcc.gnu.org/bugzilla bug data base for information on
desired target, compiler version and bug status.

For 4.6.2 there are

PR50807: Corner case, not really important.

PR50063: Not so nice but -fno-dse fixes it. If you are doing distributions,
         you can disable it by setting flag_dse = 0 in
         GCC-SOURCE/gcc/config/avr/avr.c::avr_option_override()

PR46261: -mint8 crashes avr-gcc

> Unless there is better information beginners will definitely not try new
> versions for a plain practical reason: can't build, can't no do.
> 
> I'll post more information later in the hope someone will be able to put
> it up in some obvious place on the avr-gcc project pages.
> 
> Volker