trimming excess errors from -Werror

[Tim Prince]

dannysmith@clear.net.nz wrote:
>> cc1plus: warnings being treated as errors
>>
>> /cygdrive/e/gnu/gcc-4.3-20070511/libstdc++-v3/testsuite/17_int
>> ro/headers/all_c++200x_compatibility.cc:1:
>> error: -ffunction-sections may affect debugging on some targets
>>
> 
> This is actually a useful warning, since  -ffunction-sections not only
> affects debugging but also adds unnecessary size to executables on
> PE-COFF targets (and others where ld does not support --gc-sections).
> One way to avoid is to add --enable-cxx-flags='-fno-function-sections
> -fno-data-sections' to configure
> 
> Danny  
> 
> 
Another way is to add this warning to the list of warnings which will be 
accepted by dejagnu.