Sunday, April 17, 2011

Fantom: Getting FWT to run on Linux 64-bit

Today I decided to start playing around with the Fantom language. After working through a couple of examples on the Hello World page, I ran into a problem running the example that uses the Fantom Widget Toolkit on my 64-bit machine.

After following the instructions from the Fantom Setup Page, I set my FAN_HOME in my .bash_profile to:


I later tried running the Hello FWT example below:

  using fwt
class FwtHello : Test {
Void main() {
Window { Label { text = "Hello world" }, }.open

Which produced the following error:

  hello $ fan hello::FwtHello
sys::Err: java.lang.UnsatisfiedLinkError: Cannot load 32-bit SWT libraries on 64-bit JVM

I found a swt.jar here:


The setup page recommended running fan to get a read on the platform:

 $ fan -version | grep platform
fan.platform: linux-x86_64

I created a directory, linux-x86_64, under java/ext, and copied the swt.jar downloaded from the Eclipse site to it.

Afterwhich, the example ran fine.

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