Difference between revisions of "Java"
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==Download and unpack GNU classpath== | ==Download and unpack GNU classpath== | ||
− | cd ~/ | + | mkdir ~/classpath |
+ | cd ~/classpath | ||
Download [ftp://ftp.gnu.org/gnu/classpath/classpath-0.91.tar.gz classpath-0.91] | Download [ftp://ftp.gnu.org/gnu/classpath/classpath-0.91.tar.gz classpath-0.91] | ||
tar -xzf classpath-0.91.tar.gz | tar -xzf classpath-0.91.tar.gz | ||
Line 50: | Line 51: | ||
==Too lazy to do all this?== | ==Too lazy to do all this?== | ||
− | Just download [http://files.chumby.com/languages/java/ | + | Just download [http://files.chumby.com/languages/java/jamvm_chumby_1.7.tar.gz jamvm_chumby_1.7.tar.gz] (23MB) and unpack onto your dongle. |
==Run programs!== | ==Run programs!== |
Latest revision as of 14:07, 30 May 2009
Here's how to build a simple java virtual machine for the chumby (assumes you have the development tools installed).
Or you can skip to the end and just download a prebuilt binary.
Contents
Building JamVM
Create a directory to hold the package
mkdir ~jamvm cd jamvm
Download the source code
Download jamvm-1.4.3 into ~/jamvm
Unpack the source code
tar xzvf java-1.4.3.tar.gz cd javavm-1.4.3
Configure and build
./configure --build=i386-linux --host=arm-linux --prefix=/usr/arm-linux make
Strip the binary
arm-linux-strip src/jamvm
Install
sudo make install
This will copy the virtual machine to /usr/arm-linux/jamvm
, and the custom class libraries to /usr/arm-linux/share/classes.zip
Download and unpack GNU classpath
mkdir ~/classpath cd ~/classpath
Download classpath-0.91
tar -xzf classpath-0.91.tar.gz cd classpath-0.91
Build classpath
You'll need to have jikes installed (for Kubuntu, sudo apt-get install jikes
)
./configure --build=i386-linux --host=arm-linux --prefix=/usr/arm-linux --with-jikes --disable-gtk-peer --disable-alsa --without-x --with-jni make sudo make install
Build a "java dongle" for chumby
- copy
/usr/arm-linux/bin/jamvm
to the dongle - create a directory
lib
on the dongle - copy
/usr/arm-linux/share/classes.zip
to thelib
directory on the dongle - copy the contents of
/usr/arm-linux/lib/classpath/*.so
to thelib
directory on the dongle - copy the contents of
/usr/arm-linux/share/classpath/
to thelib
directory on the dongle - create the file
java
on the dongle with the contents:
#!/bin/sh LD_LIBRARY_PATH=/mnt/usb/lib /mnt/usb/jamvm -mx8M -Xbootclasspath:/mnt/usb/lib/classes.zip:/mnt/usb/lib/glibj.zip $@
Too lazy to do all this?
Just download jamvm_chumby_1.7.tar.gz (23MB) and unpack onto your dongle.
Run programs!
For example, if you have a program Hello.java
compiled to Hello.class
, you can run it with:
# java Hello Hello World #