Free Routing Does not find JRE

Matthew_Jeschke · September 14, 2024, 7:15pm

I’ve been searching the web for a solution to the error “Java JRE version 17 or higher is required, but you have no Java installed…”

I have found a few posts on the web recommending to update the system path with Java’s path. I have JRE in my path so I don’t believe that’s my problem.

I did find one KiCad post which is closed from a year ago. A response from @qu1ck mentions “writing a wrapper for java”. Bit lost on that one so I’m following up in here.

How do I get around the Free Routing not finding JRE?

System details and notes below…

Click “Yes” then…

“Jave JRE installation failed, so we can’t run Freerouting at the moment…”

My system is Windows 10 Pro with Java Runtime Environment JRE 22.0.2

C:\Users\Matthew>java -version
java version “22.0.2” 2024-07-16
Java™ SE Runtime Environment (build 22.0.2+9-70)
Java HotSpot™ 64-Bit Server VM (build 22.0.2+9-70, mixed mode, sharing)

My version of KiCad 8.0.3

Additional referenced searches.

github.com/freerouting/freerouting

Freerouting plugin won't start from KiCad 8.0.3

opened 08:58PM - 08 Jul 24 UTC

AuBeTeX

question

Greeting! I had a problem with freerouting. Java cannot be found when launche…d from Kicad. There are plenty of them installed. By default, the oracle version is above. When the error occurred, I installed the recommended adoptium.net version, then openjdk, which can be installed by Microsoft powershell. Java is available when run from the command line. It's included in Path. I downloaded all java, I only installed version 17 from adoptium, but it still didn't work. Although the description says 17 or newer. The freerouting jar itself works when launched from the console. but I don't want to use it from there. I looked at the plugin.py file and although I don't know much about python, it looks like it's only looking for version 17. Is it possible to somehow put it in the plugin.ini where the java is? If so, how? I don't know because there are too few comments in the plugin.ini. I don't know how to enter the format, provided that the system uses it. I think it may be caused by some kind of update or installation, since it was working with Oracle's Java about 1 month ago. But since a lot has happened since then, I can't go back. I am looking for an alternative to repair. And it would be nice to know what caused it. After all, it can happen to other people (and it did, according to the forums. There are people who have solved the problem by reinstalling Java. Not for me.) data: Freerouting version: 1.9.0 Platform Windows 10 Pro 22H2 19045.4529 EDA: Kicad with freerouting plugin, installed from plugin manager. Ver.: 8.0.3 I don't use command line arguments, I wouldn't use them from the command line, I don't know how to set them in kidcad. Image: ![image](https://github.com/freerouting/freerouting/assets/57175144/b1997afc-cac8-4f8b-b491-c035f674b684) There is no log file because the autorouter does not start Reproduce: Open Kicad -> Open PCBnew -> click autorouter icon. I'm expect: Run and work :) * Is fixing this issue critical for your work? : It would significantly speed up development.

Matthew_Jeschke · September 14, 2024, 7:35pm

I found a workable solution… Seems FreeRouting plugin is particular about which installation / version of JRE is on the machine. Go to the plugin manager, then use the link under FreeRouting plugin to install JRE. This worked for me.

It seems the JRE version that was already on my system didn’t contain necessary components to run the plug-in and using the link to install provided by plug-in author resolved the issue.

davidsrsb · September 15, 2024, 12:56am

I think that you have solved it.
FreeRouting is a third party application and is not supported by the KiCad developers. The launcher plugin is a convenience and supported on Github

retiredfeline · September 15, 2024, 1:03am

You might want to raise an issue on the Freerouting github site about JRE 22 being unsuitable so that they can investigate. I know that 21 works.

system · December 14, 2024, 1:03am

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