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Re: problem with ./configure

From: Zack Weinberg
Subject: Re: problem with ./configure
Date: Thu, 12 Sep 2013 12:39:20 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:17.0) Gecko/20130801 Thunderbird/17.0.8

On 2013-09-12 12:13 PM, Eric Blake wrote:

That could help if we had a 'break' statement to abort the loop once we
think a version had been scraped; but right now, the full loop is
executed to completion regardless of what option(s) the compiler
understands (and in the case of gcc, executing both --version AND -v is
useful, as they give different outputs, both of which are useful).

Oh.  OK.

I'm okay if someone writes a patch to propose such an early exit (the
fewer times we execute 'gcc', the faster a configure script will run -
provided we aren't adding more forks in our decision for an early exit
in the first place), but am not sure I will tackle it myself.

Coincidentally I have fairly sophisticated compiler-version-detection logic written for another project; I'm not promising to do this anytime soon, but I might see about porting it over.


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