Eclipse Community Forums: Rich Client Platform (RCP) » Building an Eclipse RCP application for Raspian aarch64 fails because of missing SWT classes

Home » Eclipse Projects » Rich Client Platform (RCP) » Building an Eclipse RCP application for Raspian aarch64 fails because of missing SWT classes(Missing SWT classes (ClassNotFoundException) but org.eclipse.swt.gtk.linux.aarch64.jar exists in directory)

Show: Today's Messages :: Show Polls :: Message Navigator

Building an Eclipse RCP application for Raspian aarch64 fails because of missing SWT classes [message #1836332]

Tue, 29 December 2020 10:41

Simon Scherer

Messages: 1
Registered: December 2020

Junior Member

Hi,
I tried to create an aarch64 build of our Eclipse RCP application (which is not yet based on Eclipse e4).
The windows and linux build works as a charme!
I added to following environment to our parent target-platform-configuration:

<environment>
    <os>linux</os>
    <ws>gtk</ws>
    <arch>aarch64</arch>
</environment>

The build runs successfully and creates a nice zip file:

de.alamos.monitor-linux.gtk.aarch64.zip

I have the latest raspian with 64bit support:

Linux raspberrypi 5.10.2-v8+ #1385 SMP PREEMPT Wed Dec 23 12:00:51 GMT 2020 aarch64 GNU/Linux

After unzipping the zip and I made the start file executable:

sudo chmod +x start

Now I tried to start the application:

pi@raspberrypi:~/Downloads/am4/de.alamos.monitor-linux.gtk.aarch64 $ ./start 
bash: ./start: Datei oder Verzeichnis nicht gefunden

Unfortunately, there is an error which says, that the file or directory could not be found.
Next, I tried to start the launcher directly:

java -jar plugins/org.eclipse.equinox.launcher_1.6.0.v20200915-1508.jar

After a couple of seconds, the start fails and generates a nice error file (see attached file).

The error is obvious (or not?):

Caused by: java.lang.ClassNotFoundException: org.eclipse.swt.SWTError cannot be found by org.eclipse.ui.workbench_3.122.0.v20201122-1345

The weird thing ist, that actually there is a swt aarch64 jar in my plugins directory:

/home/pi/Downloads/am4/de.alamos.monitor-linux.gtk.aarch64/plugins/org.eclipse.swt.gtk.linux.aarch64_3.115.100.v20201202-1103.jar

Am I missing something?
Do you have any idea, why the application wont start?

I attached the target file definition.

Thanks for your help!!
Simon

Attachment: 1609237307838.log
(Size: 29.98KB, Downloaded 80 times)
Attachment: target.target
(Size: 4.17KB, Downloaded 87 times)

Report message to a moderator

Re: Building an Eclipse RCP application for Raspian aarch64 fails because of missing SWT classes [message #1849334 is a reply to message #1836332]

Wed, 12 January 2022 22:09

Wim Jongman

Messages: 493
Registered: July 2009

Senior Member

Yes, this is not how you start Eclipse. For inspiration take a look at the following file: https://github.com/wimjongman/pipolos/blob/master/com.weltevree.pipolos.feature/rootfiles/pipolos.sh

Report message to a moderator

Re: Building an Eclipse RCP application for Raspian aarch64 fails because of missing SWT classes [message #1849335 is a reply to message #1849334]

Wed, 12 January 2022 22:12

Wim Jongman

Messages: 493
Registered: July 2009

Senior Member

the gist is this:

#!/bin/bash
cp=$(find -name "org.eclipse.equinox.launcher_*.jar" | sort | tail -1);
javaOpts="-Dwhat=ever"
opts="-consolelog -console"
java ${javaOpts} -cp ${cp} org.eclipse.equinox.launcher.Main ${opts}

Report message to a moderator

Previous Topic:	Fixed Window Size depending on perspective
Next Topic:	HandlerUtil for isEnabled of handler

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Fri Sep 20 18:49:09 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter