OESF | ELSI | pdaXrom | OpenZaurus | Zaurus Themes | Community Links | Ibiblio

IPB

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
> ld-config
ced
post Feb 6 2004, 03:04 AM
Post #1





Group: Members
Posts: 225
Joined: 9-December 03
Member No.: 1,104



The sharp rom contains libc 2.2.2 and ld-config 2.2.2.

The blackdown JVM for Xscale is compiled against libc 2.3.x and ld-config 2.3.x.

I've copied the library 2.3.x to /home/zaurus/mylib and I've started the JVM as follow:

CODE
export LD_LIBRARY_PATH=/home/zaurus/mylib:$LD_LIBRARY_PATH

java -version


the JVM has found my new libc 2.3.x but the new libc is still loaded by the old ld-config.

How can I load the JVM libraries using the new ld-config 2.3.x.

with "chroot"?? or LD_PRELOAD??
Go to the top of the page
 
+Quote Post
lardman
post Feb 6 2004, 04:12 AM
Post #2





Group: Members
Posts: 4,515
Joined: 25-October 03
From: Bath, UK
Member No.: 464



QUOTE
but the new libc is still loaded by the old ld-config


I presume that ld-config is always in memory and is shared so it can't be unloaded unless you reboot (this is just a guess though). I think your options are - recompile ROM against libc 2.3 or statically link libc 2.3 into your JVM (would this work, I don't know?).


Si
Go to the top of the page
 
+Quote Post
ced
post Feb 6 2004, 04:50 AM
Post #3





Group: Members
Posts: 225
Joined: 9-December 03
Member No.: 1,104



can I replace the ld-linux library from 2.2.2 to 2.3.2 without re-building a new rom?

just by mounting the file system as read/write? do my changes and re-apply the file system to read only. can I do that?

any issue moving to libc 2.2.2 to 2.3.2? is it down-compatible? (I'm not sure if I've asked this question before...)
Go to the top of the page
 
+Quote Post
tumnus
post Feb 6 2004, 05:06 AM
Post #4





Group: Members
Posts: 1,176
Joined: 3-October 03
From: UK
Member No.: 547



The 5600 ROM is a readonly JFFS2 partition, so to make the 5600 ROM writable just run this command as root:

mount / -o rw,remount

Then replace the files you need to change and run this command to protect the ROM again:

mount / -o ro,remount

No reboot required smile.gif
Go to the top of the page
 
+Quote Post
lardman
post Feb 6 2004, 05:10 AM
Post #5





Group: Members
Posts: 4,515
Joined: 25-October 03
From: Bath, UK
Member No.: 464



libc 2.3 is backwards compatible (in my experience of running old command line apps on Oz3.3.6pre1 anyway).

I doubt you'll be able to replace ld-config while your Z is running as it's always loaded (I assume). Make sure you have your CF/SD card setup for flashing if you do try this as it will probably end up with a dead Z which needs a flash.


Si
Go to the top of the page
 
+Quote Post
ced
post Feb 6 2004, 05:25 AM
Post #6





Group: Members
Posts: 225
Joined: 9-December 03
Member No.: 1,104



d'oh!!!!

I've done this...

cd /lib
rm ld-linux.so.2
rm ld.so.2

and going to do -> ln -s ld-2.3.2.so ld-linux.so.2
but the system doesn't find anything... :-( ;-)

and if I reboot then the system won't work!

do I need to reflash?

should I do this instead next time? -> ln -n -f ld-2.3.2.so ld-linux.so.2
Go to the top of the page
 
+Quote Post
lardman
post Feb 6 2004, 06:38 AM
Post #7





Group: Members
Posts: 4,515
Joined: 25-October 03
From: Bath, UK
Member No.: 464



QUOTE
and if I reboot then the system won't work!


Assuming you've tried rebooting and it now doesn't work, then yes you need to reflash.

However the method you've used might work, you just have to make sure you get all of the relevant files and symlinks updated. I once tried doing ld-linux.* and libc.so.* but it still failed. My guess then was that I'd left some other vital file at the old version. I reflashed and have left well alone since then (not least because I'm using OZ 3.3.6pre1 which uses libc2.3).


Si
Go to the top of the page
 
+Quote Post
ced
post Feb 6 2004, 07:25 AM
Post #8





Group: Members
Posts: 225
Joined: 9-December 03
Member No.: 1,104



I've replaced all the libraries in /lib

after a reboot the /sbin/launch prg failed to run...

so I think I'll wait the new cacko rom with libc 2.3 and qtopia 1.7.
Go to the top of the page
 
+Quote Post

Reply to this topicStart new topic
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 24th July 2014 - 07:21 AM