Experimental Physics and
Industrial Control System

Wang Xiaoqiang via Tech-talk <tech-talk at aps.anl.gov> · Wed, 27 Sep 2023 06:04:26 +0000

Hi Peter,

The message says asyn module should be linked.

Labjack module builds an IOC with these lines,
https://github.com/epics-modules/LabJack/blob/61e3c59d91a721ccef8f5504cb1ba4cab5e0cba8/LabJackApp/src/Makefile#L22-L43

Best
Xiaoqiang

> On 26 Sep 2023, at 19:30, Peter Pitfield via Tech-talk <tech-talk at aps.anl.gov> wrote:
> 
> Hello,
> I am trying to use the labjack module, and I am receiving the error message in the subject line.
> The complete error looks like this:
> /usr/bin/g++ -o labjackIOC  -L/home/raphael/EPICS/IOCs/labjackIOC/lib/linux-x86_64 -L/home/raphael/EPICS/epics-base/lib/linux-x86_64 -L/home/raphael/EPICS/support/LabJack/lib/linux-x86_64 -Wl,-rpath,/home/raphael/EPICS/IOCs/labjackIOC/lib/linux-x86_64 -Wl,-rpath,/home/raphael/EPICS/epics-base/lib/linux-x86_64 -Wl,-rpath,/home/raphael/EPICS/support/LabJack/lib/linux-x86_64          -rdynamic -m64         labjackIOC_registerRecordDeviceDriver.o labjackIOCMain.o    -llabjackIOCSupport -lLabJack -lqsrv -lpvAccessIOC -lpvAccessCA -lpvAccess -lpvData -ldbRecStd -ldbCore -lca -lCom   
> /usr/bin/ld: labjackIOC_registerRecordDeviceDriver.o: undefined reference to symbol 'pvar_dset_asynInt32ArrayWfIn'
> /usr/bin/ld: /home/raphael/EPICS/support/asyn/lib/linux-x86_64/libasyn.so: error adding symbols: DSO missing from command line
> collect2: error: ld returned 1 exit status
> make[3]: *** [/home/raphael/EPICS/epics-base/configure/RULES_BUILD:231: labjackIOC] Error 1
> make[3]: Leaving directory '/home/raphael/EPICS/IOCs/labjackIOC/labjackIOCApp/src/O.linux-x86_64'
> make[2]: *** [/home/raphael/EPICS/epics-base/configure/RULES_ARCHS:58: install.linux-x86_64] Error 2
> make[2]: Leaving directory '/home/raphael/EPICS/IOCs/labjackIOC/labjackIOCApp/src'
> make[1]: *** [/home/raphael/EPICS/epics-base/configure/RULES_DIRS:85: src.install] Error 2
> make[1]: Leaving directory '/home/raphael/EPICS/IOCs/labjackIOC/labjackIOCApp'
> make: *** [/home/raphael/EPICS/epics-base/configure/RULES_DIRS:85: labjackIOCApp.install] Error 2
> 
> Also, I do not know how to set up an IOC with the labjack module. I have checked the readme file in the module and the documentation it has a link to, but the setup instructions did not seem complete. I would like to know what, if anything, I might be missing.
> 
> Thank you so much,
> Peter

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System