RFC: cxxsupp test linkage on synth linux

[Jonathan Larmour]

Uros Bizjak wrote:
> Hello!
> 
>> The problem is that these missing functions come from a new separate 
>> library, libgcc_eh.a in gcc-lib.I can't seem to correctly specify that 
>> library's inclusion on the command line. Instead the only way to get 
>> it included is to edit synth.ld so that's probably what's required.
>>
>> But why haven't people noticed this before? Versions of GCC 3.x before 
>> GCC 3.2.1 wouldn't work unless people were going back as far as gcc 2.9x.
> 
> 
>  With RedHat 9.0 (gcc-3.2.2), there are some problems with libgcc_eh.a 
> included. Testsuite for linux-synthetic target breaks with:
> 
> make[1]: Leaving directory `/home/dejan/tmp/synth_build/infra/current'
> /usr/lib/gcc-lib/i386-redhat-linux/3.2.2/libgcc_eh.a(unwind-dw2-fde-glibc.o)(.text+0x136b): 
> 
> In function `_Unwind_Find_FDE':
> make: Leaving directory `/home/dejan/tmp/synth_build'
> : undefined reference to `dl_iterate_phdr'

I was worried something like this might happen. We can do an explicit 
check for _GNUC_PATCHLEVEL_ but it would be nice to know if this is maybe 
something specific with the RH9 3.2.2 or not. Or 3.2.3 or GCC CVS for that 
matter. Anyone got those native tools and willing to try it quickly?

I'm not running RH9 myself I'm afraid.

Jifl
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