Paolo Bonzini <bonz...@gnu.org> writes:
> On 10/01/2010 03:57 PM, Eric Blake wrote:
>>
>> Either way, the name of the indirect variable being assigned is
>> $prefix_a_b, whether you use pre- or post-2.67. Why is 'a=b' being
>> passed instead of 'a_b' in the first place? I'd need to see more
>> context of the real macro usage (rather than this trivial test case) to
>> see whether the efficiency hit is a corner case of a=b is likely in real
>> life and thus a performance regression, or just an extreme that is not
>> worth worrying about.
>
> Given it's about GCC options, I'd guess the real parameter was akin to
> -Wformat=2 and it's building something like
> ax_cv_gcc_option__Wformat_2.
Yes, the original bug report was for the behavior of:
AX_CFLAGS_GCC_OPTION(-std=c99)
See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=593838
--
Ben Pfaff
http://benpfaff.org
