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Re: ZILE 2.3.10 (Autoconf 2.64 finds deadly DJGPP Bash bug)
From: |
Eric Blake |
Subject: |
Re: ZILE 2.3.10 (Autoconf 2.64 finds deadly DJGPP Bash bug) |
Date: |
Sat, 22 Aug 2009 13:40:23 -0600 |
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.23) Gecko/20090812 Thunderbird/2.0.0.23 Mnenhy/0.7.6.666 |
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According to Rugxulo on 8/21/2009 11:27 PM:
>> However, the whole point of using 'return $ac_retval' without a subshell
>> is to avoid forking, and catering to bash 2.04 brokenness (if it is indeed
>> a bash bug fixed for 2.05a, as I suspect) is a step backwards.
>
> You really think that this will slow everything down? Have you tested
> it on your machine? (hint hint) :-)
Yes I have tested it on cygwin, and yes it made a difference, which is why
we committed the patch in the first place. Seriously - the cost of a
subshell is VERY measurable, and doing anything to avoid a subshell will
have NOTICEABLE differences in the running time of a configure script.
- --
Don't work too hard, make some time for fun as well!
Eric Blake address@hidden
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- Re: ZILE 2.3.10 (Autoconf 2.64 finds deadly DJGPP Bash bug), Rugxulo, 2009/08/20
- Re: ZILE 2.3.10 (Autoconf 2.64 finds deadly DJGPP Bash bug), Reuben Thomas, 2009/08/20
- Re: ZILE 2.3.10 (Autoconf 2.64 finds deadly DJGPP Bash bug), Reuben Thomas, 2009/08/23
- Re: ZILE 2.3.10 (Autoconf 2.64 finds deadly DJGPP Bash bug), Rugxulo, 2009/08/26
- Re: ZILE 2.3.10 (Autoconf 2.64 finds deadly DJGPP Bash bug), Paolo Bonzini, 2009/08/26
- Re: ZILE 2.3.10 (Autoconf 2.64 finds deadly DJGPP Bash bug), Rugxulo, 2009/08/26
- Re: ZILE 2.3.10 (Autoconf 2.64 finds deadly DJGPP Bash bug), Chet Ramey, 2009/08/28