RE: [Gumstix-users] Jamvm classpath setup

[Heilpern, M. <mar...@au...>]

I received the email below in personal email, from someone not able to
respond to the list. Thanks, Rob.

Specifically, how I got jamvm to work from a fresh build:

*) Edit Makefile, to include TARGET+=3Djamvm classpath
1) From the gumstix-buildroot directory, command: make
2) Wait (and wait and wait) for completion
3) command: cd build_arm_npfpu/jamvm-1.3.1
4) command: ./configure --target=3Darm-linux --host=3Darm-linux
--build=3Di386-pc-linux-gnu --prefix=3D/usr --exec-prefix=3D/usr
--bindir=3D/usr/bin --sbindir=3D/usr/sbin --libexecdir=3D/usr/lib
--sysconfdir=3D/etc --datadir=3D/usr/share --localstatedir=3D/var
--mandir=3D/usr/man --infodir=3D/usr/info =
--with-classpath-install-dir=3D/usr
5) command: make clean
6) command: cd ../..
7) command: make

Then using the resulting root FS image, I was able to "jamvm hello" and
have my simple application run.






----------
Hi Mark,

I see you're having problems getting JamVM to work (from gumstix
general).  Firstly, to specify the classes used for the boot class
loader you have to use -Xbootclasspath.   The system class loader
(which uses the 'normal' classpath) is written in Java.

You also need to add JamVM's specific classes (which override some in
Classpath).  Assuming you installed JamVM in /foo, this will be:

jamvm
-Xbootclasspath:/foo/share/jamvm/classes.zip:/usr/share/classpath/glibj.
zip
hello (you don't add the .class on the end).

However, it's easier to specify the location of Classpath when you
configure JamVM.  By default, the build assumes Classpath is installed
in /usr/local/classpath (Classpath's default location).  To override
this you need to use the with-classpath-install-dir option to configure,
i.e.:

./configure --with-classpath-install-dir=3D/usr

Hope this helps,

Rob.

P.S.  Could you forward this to the list?  I'm not subscribed.  Thanks.=20

-----Original Message-----
From: gum...@li...
[mailto:gum...@li...] On Behalf Of
Heilpern, Mark
Sent: Wednesday, October 19, 2005 4:21 PM
To: gum...@li...
Subject: [SPAM- (Header)] - [Gumstix-users] Jamvm classpath setup -
Email found in subject

I've made a build with jamvm and classpath included, and am trying to
test basic java functionality with a hello world application. I'm
getting an error consistantly:
   Exception occurred while VM initialising.
   Java/lang/NoClassDefFoundError: java/lang/Thread

My attempts have included commands such as:
   jamvm -verbose -classpath /usr/share/classpath/glibj.zip hello.class

I've checked that zip, and java/lang/Thread.class is in it. The -verbose
flag isn't revealing any additional details.

Any thoughts?


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