Re: More GCC 3.4 issues

[Jonathan Larmour <jifl at eCosCentric dot com>]

Gary Thomas wrote:
> I've determined that the previous error is definitely a problem with GCC.
> If a C++ function is marked extern "C", it messes up multiple static
> variable declarations.  I've reported this as GCC BUG 14324
>
> Now, on to the next issue.  It seems that there may need to be some 
> additional C++ support added (to whatever we have now).  Anyone have
> any ideas what the following errors mean & what I need to do about them?
>
> powerpc-eabi-gcc -msoft-float -mcpu=405 -g -nostdlib -Wl,-static -Wl,--fatal-warnings -L/work/moab/t/install/lib -Ttarget.ld -o /work/moab/t/install/tests/infra/current/tests/cxxsupp tests/cxxsupp.o
> /opt/mlb/xtools/lib/gcc/powerpc-eabi/3.4.0/../../../../powerpc-eabi/lib/nof/libsupc++.a(vterminate.o)(.text+0x70): In function `__gnu_cxx::__verbose_terminate_handler()':
> /usr/src/redhat/BUILD/mlb_tools/gcc-3.4-20040225/libstdc++-v3/libsupc++/vterminate.cc:66: undefined reference to `__cxa_demangle'
> /opt/mlb/xtools/lib/gcc/powerpc-eabi/3.4.0/../../../../powerpc-eabi/lib/nof/libsupc++.a(vterminate.o)(.got2+0x4):/usr/src/redhat/BUILD/mlb_tools/gcc-3.4-20040225/libstdc++-v3/libsupc++/vterminate.cc:46: undefined reference to `_impure_ptr'

_impure_ptr comes from newlib, and is thus an artifact of the way we build 
tools. We could hack around it by defining an impure_ptr, but in reality, 
if it's referenced then it may well be referenced by something that really 
may be called in practice, in which case things may just suddenly break.

So if you want to play with 3.4 then hack around it that way, but I guess 
"officially" we shouldn't use those tools yet. 3.4 hasn't been released 
anyway, so I'm not too concerned yet.

It's not a problem with GCC itself though at least.

Jifl
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