Re: [Mingw-cross-env-list] gcc: why disable sjlj ?

[Alois Schlögl]

The problem is solved. The problem was a broken Makefile in my own project.
Sorry for the noise.

    Alois


P.S. Yes, I've built from scratch (fresh clone of the mce repository) 
the packages that are needed.


On 05/05/11 13:30, Volker Grabsch wrote:
> Alois Schlögl schrieb:
>    
> > I've problems compiling biosig with the recent version of gcc
> > (specifically, tinyxml is used for reading some xml files), causing
> > these error messages:
> >
> > win32/libbiosig.a(tinyxml.obj):tinyxml.cpp:(.text+0x4797): undefined
> > reference to `___gxx_personality_sj0'
> > win32/libbiosig.a(tinyxml.obj):tinyxml.cpp:(.text+0x47b0): undefined
> > reference to `__Unwind_SjLj_Register'
> > win32/libbiosig.a(tinyxml.obj):tinyxml.cpp:(.text+0x4860): undefined
> > reference to `__Unwind_SjLj_Unregister'
> > win32/libbiosig.a(tinyxml.obj):tinyxml.cpp:(.text+0x48a4): undefined
> > reference to `__Unwind_SjLj_Resume'
> >      
> Has the whole library been built with exactly the same GCC?
>    

> That kind of SJLJ code shouldn't have been generated in the first place.
>
> It seems that one part of your code was compiled with the "old" GCC
> (without "--disable-sjlj-exceptions") and another part with the "new" GCC
> (with "--disable-sjlj-exceptions").
>
>    
>    
> > The problem goes away when
> >         --disable-sjlj-exceptions \
> > is removed from gcc.mk, and mingw-cross-env is rebuilt. I know that
> > the change was introduced here
> >     http://hg.savannah.gnu.org/hgweb/mingw-cross-env/rev/9e757634e635
> > with the comment "disable SJLJ exceptions explicitly, as those cause
> > trouble".
> >      
> This comment refers to the following mailing list posting:
>
>      
> http://lists.nongnu.org/archive/html/mingw-cross-env-list/2011-04/msg00014.html
>
> Please have a look at the surrounding thread, too.
>    

> Greets,
> Volker
>
>