Re: Bug #593838: AX_CFLAGS_GCC_OPTION misuses AS_VAR_PUSHDEF variable

[Paolo Bonzini]

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.

Paolo