Re: exception propagation support not enabled in libstdc++ 4.4 on {armeabi,hppa,sparc}-linux

[Matthias Klose <doko at ubuntu dot com>]

Paolo Carlini schrieb:
> Matthias Klose wrote:
>> Paolo Carlini schrieb:
>>   
>>> Paolo Carlini wrote:
>>>     
>>>> Ok, thanks. Then, I think I'll implement this, for now. Seems in any
>>>> case conservative to have a link type test identical to the one used in
>>>> libgomp and libgfortran and a fall back to the .s file (as currently used).
>>>>   
>>>>       
>>> I committed the below to mainline. Assuming no issues are noticed with
>>> it, I mean to apply it to 4_4-branch too in a few days.
>>>     
>> with this patch applied to the 4.4 branch, the tests now succeed as expected on
>> the 4_4-branch on {armeabi,hppa,sparc}-linux.
>>   
> Good. I have now backported the patch to 4_4-branch too. Please double
> check that the regression tests are also fine, thanks in advance.

Jakub pointed out on irc that sparc-linux (32bit, v8) doesn't have the atomic
support functions. Building a 32bit v9 compiler as part of a biarch build is
currently not supported (64bit and v9 are tightly coupled).

No regressions on hppa-linux.

On arm-linux-gnueabi there are regressions of the form

/usr/bin/ld: ./atomic-1.exe: hidden symbol `__sync_val_compare_and_swap_4' in
/home/doko/gcc/4.4/gcc-4.4-4.4.0/build/gcc/libgcc.a(linux-atomic.o) is
referenced by DSO
/usr/bin/ld: final link failed: Nonrepresentable section on output

in the libgomp, libstdc++ and g++ testsuites. Linking the shared libstdc++ with
both -lgcc_s and -lgcc does fix these (testsuites currently running), however
I'm not sure how to do this properly, as libtool removes any `-lgcc' argument.

  Matthias