[PATCH] PR85678: Change default to -fno-common

[Wilco Dijkstra]

Hi,

>> I suppose targets can override this decision. 
> I think they probably could via the override_options mechanism.

Yes, it's trivial to add this to target_option_override():

  if (!global_options_set.x_flag_no_common)
    flag_no_common = 0;

Cheers,
Wilco