Re: unoptimized autoconf generated code

[Eric Blake]

According to Eric Blake on 3/1/2010 5:32 PM:
>>>> Autoconf could have optimized this to
>>>>
>>>>   if eval "test \"\${$as_gl_Symbol+set}\" = set"; then
>>>>
> 
> I'm game.  But I think this patch series is a little more robust.  It
> shaves more than 1k size off of coreutils' configure.  The number of
> reduced processes is in the noise.
> 

Here's an updated version of patch 2/3 of the previous post; I realized
that ${a+b} should not be treated as a simple indirection, and added some
documentation.  Patch 1/3 and 3/3 are unchanged.

-- 
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden

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