Re: Ubuntu 25.10 EPICS modules will not compile

[Mark Rivers via Tech-talk <tech-talk@aps.anl.gov>]

This is because GCC 15 is stricter.  There are already pull requests to fix this in asyn and calc:

https://github.com/epics-modules/asyn/pull/222

https://github.com/epics-modules/calc/pull/34

It looks like similar changes will be needed in sscan, StreamDevice, and sequencer.

Mark

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From: Tech-talk <tech-talk-bounces@aps.anl.gov> on behalf of Graeme Elliner via Tech-talk <tech-talk@aps.anl.gov>
Sent: Wednesday, October 29, 2025 10:24 AM
To: tech-talk@aps.anl.gov <tech-talk@aps.anl.gov>
Subject: Ubuntu 25.10 EPICS modules will not compile

 

Hi

I’m trying to set up a new EPICS PC running the latest Ubuntu OS, I’ve downloaded the latest versions of epics-base and the basic modules (asyn, calc, sscan, StreamDevice, sequencer) from github

Epics base compiles fine, however I get pretty much the same error from all the modules ‘long int (*)(void)’ from incompatible pointer type [Wincompatible-pointer-types]

Here is my set up

OS = Ubuntu 25.10

Gcc= 15.2.0

$EPICS_HOST_ARCH = linux-x86_64

$EPICS_BASE=/opt/epics/base

$EPICS_SUPPORT = /opt/epics/modules

 

Best Regards,

Graeme Elliner
Senior Control & Electrical Engineer
XDS Oxford Limited
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