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Re: [PATCH] lower cap on max_cmd_len to fix hppa2.0w-hp-hpux11.00

From: Michael Elizabeth Chastain
Subject: Re: [PATCH] lower cap on max_cmd_len to fix hppa2.0w-hp-hpux11.00
Date: Mon, 9 Jul 2001 10:46:53 -0700

> The bug report at 
> shows that the problem is intermittent, the reporter verifies that
> --with-system-zlib allows him to build gcc 3.0.  I am assuming that
> ltconfig is being run for at least one other library without error.

That's a bad assumption.  On my machine, zlib is the only library
in the 3.0 distribution which gets configured with ltconfig.
I don't think it's an intermittent problem at all.

> If the case was that every hp 11.0 machine (or nearly every one)
> couldn't use libtool, then I would advocate the change to work around the
> problem.

I've got one report from the field + it happens reliably on my
machine.  That's two reported machines, which is enough for me
to want a workaround.

> The reason you don't have any change in performance when you lower
> this limit is that your project (gcc) doesn't build large libraries.

Again, no.

On these natives:


... ltconfig, right now, reports a limit of 512K or less.  ltconfig
reports the same limit with my patch.  You know this; I reported it in
my first message.

On this native:


... your system reports 790K and my system craps out.  I don't know what
the performance difference is between 790K and 390K (the value I get
after lowering the max limit).  Even if this difference is substantial,
it is not worth the hassle of telling people to upgrade their system
software to run libtool.

> Talk with the HP support people, and let me know what they say.  Deal?

No, I have lots of issues like this, and I can't spend N round-trips
in e-mail with the likely outcome that our customers have to apply one
patch per problem.  It's much better for us if our source tree builds
on a wide variety of systems without patching the vendor software.
So I'm going to propose to our engineering group that we make a local
change to our source.

Michael Elizabeth Chastain
"love without fear"

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