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From: | Paul Eggert |
Subject: | Re: AS_TMPDIR in _AC_PATH_PROG_FEATURE_CHECK, $debug |
Date: | Mon, 06 Dec 2004 14:08:09 -0800 |
User-agent: | Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (gnu/linux) |
Stepan Kasal <address@hidden> writes: > "Rule 4 (for experts only): Don't optimize." That rule makes sense in general, but here I think the performance difference is noticeable. _AC_OUTPUT_CONFIG_STATUS is a bottleneck on many hosts. Putting the temporary files in the working dir (especially with older NFS implementations, as is common in Linux) will slow things down quite a bit. The feature-length test wouldn't be quite as bad, but I suspect it was also put into /tmp for a good reason.
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