[avr-gcc-list] Exception handling methods (was: Re: AVR-G++)

[Bernd Trog]

On Sun, 27 Aug 2006, Rolf Magnus wrote:

> On Sunday 27 August 2006 14:37, Bernd Trog wrote:
> > --- Rolf Magnus <address@hidden> wrote:
> > > Well, this is with sjlj exception handling. I now managed to compile it
> > > with the newer exception handling method, and (at least I think that was
> >
> > Interesting. How do you switch between these two exception handling
> > methods?
>
> It's a configure switch for building gcc and libstdc++. From configure --help:
>
>   --enable-sjlj-exceptions
>                           force use of builtin_setjmp for exceptions
>                           [default=auto]
>
> I used that at the begining, because I couldn't get it to compile otherwise.

OK, does this mean that I have to disable the sjlj exceptions with
--enable-sjlj-exceptions=no
to get the newer, smaller exception handling method?

When I configure gcc-4.1.1 with this flag, make fails with:
[...]
gcc -c -g -O2 -DIN_GCC -DCROSS_COMPILE -W -Wall -Wwrite-strings
-Wstrict-proto types -Wmissing-prototypes -pedantic -Wno-long-long
-Wno-variadic-macros -Wold-sty le-definition -Wmissing-format-attribute
-Wno-error -DHAVE_CONFIG_H -DGENERATOR_ FILE -I. -Ibuild
-I/src/source/gcc-4.1.1/gcc -I/src/source/gcc-4.1.1/gcc/build
-I/src/source/gcc-4.1.1/gcc/../include
-I/src/source/gcc-4.1.1/gcc/../libcpp/include
-o build/insn-conditions.o insn-conditions.c
In file included from insn-conditions.c:45:
/src/source/gcc-4.1.1/gcc/except.h:155:6: error: #error
"EH_RETURN_DATA_REGNO required"
[...]



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