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


From: Ralf Wildenhues
Subject: Re: [PATCH 04/12] use a shell function for _AC_RUN_IFELSE
Date: Wed, 22 Oct 2008 22:34:50 +0200
User-agent: Mutt/1.5.18 (2008-05-17)

Hello Eric, Paolo,

* Eric Blake wrote on Wed, Oct 22, 2008 at 07:59:08PM CEST:
> 
> 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

While I haven't looked at this in detail, I do know there are places in
Autoconf where removing the output files before evaluating the actions
breaks user scripts.  So this sounds quite unsafe to me.

Cheers,
Ralf




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