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Re: Gcc v2.96 versus Trolltech QtEmbedded Window System

To: "Kevin D. Kissell" <kevink@mips.com>, <linux-mips@oss.sgi.com>
Subject: Re: Gcc v2.96 versus Trolltech QtEmbedded Window System
From: "Bradley D. LaRonde" <brad@ltc.com>
Date: Sat, 13 Jul 2002 08:15:56 -0400
References: <023e01c22a5e$c013f120$10eca8c0@grendel>
Sender: owner-linux-mips@oss.sgi.com
I've built qt 2.3.2 with various toolchains that I've built myself.  Most
recently I built qt 2.3.2 for mipsel with binutils 2.12, gcc 3.1, and glibc
2.4.

Here is how I build my toolchains:

    http://www.ltc.com/~brad/mips/mips-cross-toolchain

I configure qt starting like this:

    ./configure -xplatform linux-mips-g++

Regards,
Brad

----- Original Message -----
From: "Kevin D. Kissell" <kevink@mips.com>
To: <linux-mips@oss.sgi.com>
Sent: Saturday, July 13, 2002 7:15 AM
Subject: Gcc v2.96 versus Trolltech QtEmbedded Window System


> I am trying to build the GPL version of the Trolltech
> QT embedded windowing system on my Malta, using
> what I believe to be H.J. Lu's most recent tool chain:
>
> [root@localhost release-emb-generic]# g++ -v
> Reading specs from /usr/lib/gcc-lib/mipsel-redhat-linux-gnu/2.96/specs
> gcc version 2.96 20000731 (Red Hat Linux 7.3 2.96-110.1)
>
> The QT build process is a little unusual - the configure
> script causes a fairly huge (640KB) C++ source file
> to be generated, which is then thrown at the compiler.
> I would expect that to take a while, but after about
> 20 hours with zero output passed to the assembler
> stage (it runs with -pipe) and the gradual accretion
> of about 90MB of virtual memory (on my poor 32MB
> system) I concluded that it was probably trapped in
> an infinite loop.  As I have seen this sort of thing occur
> in the past in optimizer stages, I hacked the makefile
> to replace -O2 with -O0.  It hasn't run for 20 hours
> at -O0 yet, but after a couple of hours the memory
> allocation dynamic looks to be the same, only faster
> (72MB after only a couple of hours), so I'm not
> optimistic.
>
> My questions to the assembled panel of experts are:
>
> Are there known problems with gcc 2.96.110.1 in
> this regard?
>
> Is there a native toolchain that would be more
> likely to be able to handle the build of QT?
> I'm considering trying the 2.95 set on Maciej's
> site out of desperation.
>
> Has anyone succeeded in building QT Embedded
> for mips(el) Linux, either native or using cross-tools?
>
>             Regards,
>
>             Kevin K.
>
>


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