Experimental Physics and
Industrial Control System

Hi Marty,

 

Your example is much simpler, indeed. I managed to create the new PV and it works as expected.

Then I realized that the problem with my first attempt was actually setting up C++11 in my Makefile (USR_CXXFLAGS).

 

Thank you very much!

Control Systems Engineer / ICS / ESS ERIC

 

Hello Tech-Talk,

 

I’m trying to compile an IOC that has a single PV created using pvDatabase, pvData and pvAccess facilities. I’m using the “database” example in exampleCPP and also “NDPluginPVA.cpp” from ADCore as the models on how to do this task. Basically I have an an EPICS shell function that will has the following code:

 

PVDatabasePtr master = PVDatabase::getMaster();

 

string recordName = “my_record_name”;

NTScalarBuilderPtr ntScalarBuilder = NTScalar::createBuilder();

PVStructurePtr pvStructure = ntScalarBuilder->

    value(pvInt)->

    addAlarm()->

    addTimeStamp()->

    createPVStructure();

 

PVRecordPtr pvRecord = PVRecord::create(recordName,pvStructure);

bool result = master->addRecord(pvRecord);

 

The above code is include in the source of the support library built together with the IOC. The Makefile looks like this:

 

mySupport_LIBS += qsrv nt pvDatabase

mySupport_LIBS += $(EPICS_BASE_PVA_CORE_LIBS)

mySupport_LIBS += $(EPICS_BASE_IOC_LIBS)

 

I’ve also included the same libs for the IOC rules:

myIOC_LIBS += mySupport

myIOC_LIBS += qsrv nt pvDatabase

myIOC_LIBS += $(EPICS_BASE_PVA_CORE_LIBS)

myIOC_DBD  += PVAServerRegister.dbd

myIOC_DBD  += qsrv.dbd

 

However, when I compile the module, the linking process shows that there are two undefined references:

mySupport.so: undefined reference to `epics::pvDatabase::PVDatabase::addRecord(std::shared_ptr<epics::pvDatabase::PVRecord> const&)'

mySupport.so: undefined reference to `epics::pvDatabase::PVRecord::create(std::string const&, std::shared_ptr<epics::pvData::PVStructure> const&)'

 

I would appreciate any help to overcome these basics steps.

Thanks in advance!

______________________

Joao Paulo Martins

Control Systems Engineer

European Spallation Source ERIC