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Re: [PATCH 04/12] use a shell function for _AC_RUN_IFELSE


From: Paolo Bonzini
Subject: Re: [PATCH 04/12] use a shell function for _AC_RUN_IFELSE
Date: Thu, 23 Oct 2008 11:11:28 +0200
User-agent: Thunderbird 2.0.0.17 (Macintosh/20080914)

> This is a subtle change in semantics; beforehand, the if-failed code ($3) was 
> executed while the compiler output still existed, and could theoretically 
> rerun 
> conftest$ac_exeext with an argument; now the files are removed before the if-
> failed code is run.  Was this intentional?  IMHO, it is a harmless change (I 
> doubt anyone wrote an if-failed condition which was that closely tied to our 
> undocumented internals, and even if they did, they are obviously so familiar 
> with our internals that they should be able to compensate); and so far, in my 
> testing with this applied, I haven't seen any packages hiccup.

There are many, actually:

http://www.google.com/codesearch?hl=en&lr=&q=file%3Aconfigure.(ac|in)+\[(.*grep.*|.*sed.*|.*awk.*|.*\.\%2F)conftest&sbtn=Search

Paolo




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