Re: [Jamvm-general] Problems with Jamvm+AT91RM9200

[Robert L. <rob...@gm...>]

Hi,

First of all, sorry for the delay in approving this.  The list is
receiving increasing amounts of spam, and real posts are becoming hard
to spot.  It's better to join the list so I don't have to moderate
it...

2009/3/26 Anndy <lz...@gm...>:
>
> I want to use jamvm on AT91RM9200 board.
>
> Firstly, I do in suse 9.3 machine
>
> 1、gnu classpath:
>
>    classpath-0.92#CC=/usr/local/arm/2.95.3/bin/arm-linux-gcc ./configure
> --host=arm-linux --prefix=/mnt/nfs/classpath --disable-gtk-peer
> --disable-gconf-peer --disable-plugin --with-jikes --enable-jni
>    classpath-0.92#make
>    classpath-0.92#make install
>
> 2、jamvm
>
>    jamvm-1.4.3#CC=/usr/local/arm/2.95.3/bin/arm-linux-gcc ./configure
> --host=arm-linux --prefix=/mnt/nfs/jamvm
> --with-classpath-install-dir=/mnt/nfs/classpath
>    jamvm-1.4.3#make
>    jamvm-1.4.3#make install
>
> 3、copy /mnt/nfs/classpath and /mnt/nfs/jamvm  to /arm_linux_root
>
>
> Secondly, I do in AT91RM9200 board
>
> 1、mount -n -o nolock -t nfs 192.168.0.121:/arm_linux_root /mnt/nfs
>
> 2、export
> BOOTCLASSPATH=/mnt/nfs/jamvm/share/jamvm/classes.zip:/mnt/nfs/classpath/share/classpath/glibj.zip
>
> export LD_LIBRARY_PATH=/mnt/nfs/classpath/lib/classpath
>
> export PATH=/mnt/nfs/jamvm/bin:$PATH
>
> 3、[root@AT91RM9200DK nfs]$jamvm HelloWorld
>    bootclasspath is empty!
>
>    HelloWorld.class is in /mnt/nfs dir.
>
> 4、I found in /mnt/nfs/jamvm/share/jamvm, there was no classes.zip. It was a
> file dir classes. So I change the BOOTCLASSPATH as:
>   export
> BOOTCLASSPATH=/mnt/nfs/jamvm/share/jamvm/classes:/mnt/nfs/classpath/share/classpath/glibj.zip
>
>   when i run [root@AT91RM9200DK nfs]$jamvm HelloWorld again, it printed:
>
>   Exception occurred while VM initialising.
>   java/lang/NoClassDefFoundError: java/lang/Thread
>
>
> How can I solve these problems? Maybe someone give me some advices! Thanks a
> lot!

It looks like JamVM has been built without jar/zip support within the
bootstrap class-loader.  This is normally because the zlib headers or
library could not be found during configure.  The clue is in the fact
that JamVM's classes.zip doesn't exist but a classes directory does
(if the boot classloader doesn't support jar/zip, the classes are not
put in a zip).

GNU Classpath is installed separately, so its classes are still in glibj.zip.

You have two choices:

1) Install zlib headers and library
2) Unpack glibj.zip, and add the containing directory to the bootclasspath, i.e.

cd /mnt/nfs/classpath/share/classpath
unzip glibj.zip

BOOTCLASSPATH=/mnt/nfs/jamvm/share/jamvm/classes:/mnt/nfs/classpath/share/classpath

Rob.

P.S.  JamVM 1.4.3 is very old.  Later versions of JamVM abort if zlib
can't be found, forcing the user to explicitly disable zip support (or
install the required stuff).

> --
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>
>
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