Re: AS_TMPDIR in _AC_PATH_PROG_FEATURE_CHECK, $debug

[Stepan Kasal]

Hi,

On Mon, Dec 06, 2004 at 02:08:09PM -0800, Paul Eggert wrote:
> Stepan Kasal <address@hidden> writes:
> > "Rule 4 (for experts only): Don't optimize."
> 
> [...] _AC_OUTPUT_CONFIG_STATUS is a bottleneck on many hosts.

I never proposed to change the code expanded from the macro.
(I just wanted to move a few lines from one macro to another.)

> The feature-length test wouldn't be quite as bad, but I suspect it
> was also put into /tmp for a good reason.

Yes, but the way it uses AS_TMPDIR is broken.  We can either go for
a simple straightforward implementation, which can be slow on non-GNU
systems with fast /tmp (eg. Solaris), or for a rather complicated
correct tmp dir handling.

I suggest that I try to submit the former solution, you'll test it and
show us how slow it really is, and I'll implement the later one then.

Regards,
        Stepan