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Re: Bug #593838: AX_CFLAGS_GCC_OPTION misuses AS_VAR_PUSHDEF variable

From: Paolo Bonzini
Subject: Re: Bug #593838: AX_CFLAGS_GCC_OPTION misuses AS_VAR_PUSHDEF variable
Date: Fri, 01 Oct 2010 17:07:29 +0200
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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.


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