Re: Recent Glibc breaks CPQ-Java?

"Jose Luis Rivero (YosWinK)" <[email protected]> Mon, 11 Jul 2005 01:10:54 +0200
Newsgroups gmane.linux.gentoo.alpha
Message-ID <[email protected]>
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

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