RE: [gentoo-alpha] Recent Glibc breaks CPQ-Java?

[Brian Parkhurst]

It appears that and a similar fix for the ctype errors with the compaq
extended math library has resolved this issue.

Thanks again.

FYI.

I've found the following CFLAGS very useful on my Alpha:

CFLAGS=-O3 -mcpu=ev56 -mtune=ev56 -mieee -mno-soft-float -mfp-regs -pipe
-pthread

(the -mno-soft-float -mfp-regs attempt to use the internal FP components of
the Alpha processor and the -mieee corrects for NAN (not-a-number, e.g.
divide by zero) issues).  

Anyone have other/better optimizations for ev56 class?


-----Original Message-----
From: Brian Parkhurst [mailto:brianp@×××××××.net] 
Sent: Tuesday, July 12, 2005 22:49
To: gentoo-alpha@l.g.o
Subject: Re: [gentoo-alpha] Recent Glibc breaks CPQ-Java?

I appreciate the feedback.  I haven't had the time myself to research and 
thought I'd ask if anyone else had seen it.  Before delving further into it 
and filing a bug report.  (I like to try and figure out the solution or at 
least part way down the path before filing a bug).

I knew the runtime was the old compaq java and have been trying to locate a 
source to a more recent release.  Just some of the stuff I've installed on 
my alpha now doesn't work as the jvm fails.

I'll try the patch when I get another shot at it and report back soonest.

Brian Parkhurst
brianp@×××××××.net
----- Original Message ----- 
From: "Jose Luis Rivero (YosWinK)" <yoswink@g.o>
To: <gentoo-alpha@l.g.o>
Sent: Sunday, July 10, 2005 4:10 PM
Subject: Re: [gentoo-alpha] Recent Glibc breaks CPQ-Java?


> Hi Brian:
>
> Sorry for my delayed response ... i'm quite busy lately trying to finish
> some real live (tm) issues.
>
>> I've rebuilt my glibc 2.3.4.20041102-r1 recently and now I'm getting a
>> strange error with java-config.  (mainly I did this because the gcc
>> version upgraded to 3.3.6 ).
>>
>> Can't load library "/opt/compaq-jdk-1.3.1/jre/lib/alpha/libjava.so",
>> because /op
>> t/compaq-jdk-1.3.1/jre/lib/alpha/libjava.so: symbol __libc_wait, version
>> GLIBC_2
>> .0 not defined in file libc.so.6.1 with link time reference
>> Could not create the Java virtual machine.
>>
>> Any ideas?
>>
> First of all, i would like to clarify that java related bugs in gentoo
> alpha aren't the first in our TODO list. This has a quite simple
> explanation: Only java virtual machine actually in portage is
> "java-compaq" which is not maintained upstream since 1.3.1, so try to
> solve bugs without upstream support and without new 1.4  (or 1.5) java
> branch could be very bad idea.
>
> Summarizing: java bugs are always welcome (of course) but response might
> be very slow or non-existant.
>
> After this,  I have to say that last month i was playing with java trying
> to make things work on alpha and i found same problem with __libc_wait.
>
> I found a patch (in some alpha related malling list) that works fine for
> me, if you want give it a look:
>
> - 1. Download the patch
> http://dev.gentoo.org/~yoswink/alpha/libcwait.c
>
> - 2. Place where you want, and compile it with:
> gcc -shared -o libcwait.so libcwait.c -fpic -O
>
> - 3. Preload the patch writing at the beginning of
> /opt/compaq-jdk/bin/java
> LD_PRELOAD=/path-to-file/libcwait.so
> export LD_PRELOAD
>
> I would appreciate a lot that you report the results, maybe we could
> include it into the tree if it solves some of our problems.
>
> I hope back to have some free time for Gentoo at the end of this month to
> continue playing with java and trying to get 1.4 branch in alpha.
>
> Bye and sorry again for the delay.
>
> --------------------------------
> YosWinK @ gentoo.org
> Gentoo GDP
> Gentoo Alpha Dev
>
> --
> gentoo-alpha@g.o mailing list
>
>

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