Experimental Physics and
Industrial Control System

Dear all,

I am trying to work with OPC UA device support, based on Unified Automation OPC UA C++ based client library : https://github.com/epics-modules/opcua

I am only using Unified Automation evaluation bundle so far.

I am using Centos 7. Unified Automation SDK was compiled with gcc 9.4.0, openssl 1.1.1k and libxml 2.9.1. Everything went OK when compiling the SDK as far as I can see.

devOpcuaSup compiles without errors as well.

At IOC compilation, I encounter the following error and can’t get rid of it :

/usr/local/bin/g++ -o iocRfqRfAmplifiers -L/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64 -L/iee/base/lib/linux-x86_64 -Wl,-rpath,/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64 -Wl,-rpath,/iee/base/lib/linux-x86_64 -rdynamic -m64 iocRfqRfAmplifiers_registerRecordDeviceDriver.o iocRfqRfAmplifiersMain.o -lopcua -ldbRecStd -ldbCore -lca -lCom

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::getParentNode()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::getNodeName()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlElement::getChild(char const*)'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::getRootNode()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::~UaXmlDocument()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlElement::getContent(UaXmlValue&)'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlElement::getAttributeValue(char const*, UaXmlValue&)'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlElement::UaXmlElement()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::getNextSibling()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::getNamespace() const'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::cleanupParser()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlElement::UaXmlElement(UaXmlElement const&)'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::getNamespace(char const*) const'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlElement::getChildElements(char const*, std::__cxx11::list<UaXmlElement, std::allocator<UaXmlElement> >&)'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::UaXmlDocument()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::initParser()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::getChildElements(char const*, std::__cxx11::list<UaXmlElement, std::allocator<UaXmlElement> >&)'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlValue::UaXmlValue()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlElement::getParentNode()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::getFirstChild()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::loadXmlText(char const*, int, char const*)'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlDocument::getAttributeValue(char const*, UaXmlValue&)'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlElement::operator=(UaXmlElement const&)'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlValue::~UaXmlValue()'

/home/gd265689/local_tops/topOpcUa/lib/linux-x86_64/libopcua.so: undefined reference to `UaXmlElement::~UaXmlElement()'

collect2: error: ld returned 1 exit status

make[3]: *** [iocRfqRfAmplifiers] Error 1

make[3]: Leaving directory `/home/gd265689/local_tops/topOpcUa/iocBoot/iocRfqRfAmplifiers/src/O.linux-x86_64'

make[2]: *** [install.linux-x86_64] Error 2

make[2]: Leaving directory `/home/gd265689/local_tops/topOpcUa/iocBoot/iocRfqRfAmplifiers/src'

make[1]: *** [src.install] Error 2

make[1]: Leaving directory `/home/gd265689/local_tops/topOpcUa/iocBoot/iocRfqRfAmplifiers'

make: *** [iocRfqRfAmplifiers.install] Error 2

My top contains :

- sdk folder : Unified Automation SDK

- devOpcuaSup : the EPICS device support for OPC UA

- iocRfqRfAmplifiers : my IOC

Here is my CONFIG_SITE.local:

GNU_BIN = /usr/local/bin

USR_CFLAGS += -std=c11

USR_CXXFLAGS += -std=c++11

CROSS_COMPILER_TARGET_ARCHS =

XML_INCLUDE = /usr/include/libxml2

XML_DIR = /usr/lib64

# Path to the Unified Automation OPC UA C++ SDK

UASDK = /home/gd265689/local_tops/topOpcUa/sdk

# How the Unified Automation SDK shared libraries are deployed

# SYSTEM = shared libs are in a system location

# PROVIDED = shared libs are in $(UASDK_SHRLIB_DIR)

# INSTALL = shared libs are installed (copied) into this module

# EMBED = link SDK code statically into libopcua,

# SDK libraries are not required on target system

UASDK_DEPLOY_MODE = EMBED

UASDK_LIB_DIR = $(UASDK)/lib

UASDK_SHRLIB_DIR = $(UASDK_LIB_DIR)

# How the Unified Automation SDK libraries were built

UASDK_USE_CRYPTO = NO

UASDK_USE_XMLPARSER = NO

include $(TOP)/configure/CONFIG_OPCUA_VERSION

My RELEASE.local :

OPCUA = /home/gd265689/local_tops/topOpcUa/devOpcuaSup

I added the following line in devOpcuaSup makefile to get rid of “openssl not found errors”

USR_INCLUDES += -I/usr/include/openssl

Can you please help me to find what is missing in my configuration ? Thank you very much !

Gabriel Desmarchelier

CEA Paris-Saclay