libxerces-c.so: undefined reference to many packages

问题

I am getting the below error while running the steps (in make for seshat) I don't know why this is coming the seshat is written in c++ and I have never installed something in C++ kindly help how should I install this on my system(centos 7). If the question you find very naive then kindly help I know it might be as I am very new to cpp things. I am following this link for installing seshat

My make file looks like this:

CC=g++
LINK=-lxerces-c -lm
FLAGS = -O3 -Wno-unused-result #-I/path/to/boost/

OBJFEAS=symfeatures.o featureson.o online.o
OBJMUESTRA=sample.o stroke.o
OBJPARSE=seshat.o meparser.o gparser.o grammar.o production.o symrec.o 
duration.o segmentation.o sparel.o gmm.o
OBJTABLA=tablecyk.o cellcyk.o hypothesis.o logspace.o
OBJRNNLIB=Random.o DataExporter.o WeightContainer.o ClassificationLayer.o 
Layer.o Mdrnn.o Optimiser.o
RNNLIBHEADERS=rnnlib4seshat/DataSequence.hpp rnnlib4seshat/NetcdfDataset.hpp 
rnnlib4seshat/Mdrnn.hpp rnnlib4seshat/MultilayerNet.hpp rnnlib4seshat/Rprop.hpp 
rnnlib4seshat/SteepestDescent.hpp rnnlib4seshat/Trainer.hpp 
rnnlib4seshat/WeightContainer.hpp
OBJS=$(OBJFEAS) $(OBJMUESTRA) $(OBJPARSE) $(OBJTABLA) $(OBJRNNLIB)

seshat: $(OBJS)
    $(CC) -o seshat $(OBJS) $(FLAGS) $(LINK)

seshat.o: seshat.cc grammar.o sample.o meparser.o
    $(CC) -c seshat.cc $(FLAGS)

production.o: production.h production.cc symrec.o
    $(CC) -c production.cc $(FLAGS)

grammar.o: grammar.h grammar.cc production.o gparser.o symrec.o
    $(CC) -c grammar.cc $(FLAGS)

meparser.o: meparser.h meparser.cc grammar.o production.o symrec.o tablecyk.o 
cellcyk.o logspace.o duration.o segmentation.o sparel.o sample.o hypothesis.o
    $(CC) -c meparser.cc $(FLAGS)

gparser.o: gparser.h gparser.cc
    $(CC) -c gparser.cc $(FLAGS)

sample.o: sample.h sample.cc tablecyk.o cellcyk.o stroke.o grammar.o
    $(CC) -c sample.cc $(FLAGS)

symrec.o: symrec.h symrec.cc symfeatures.o $(RNNLIBHEADERS)
    $(CC) -c symrec.cc $(FLAGS)

duration.o: duration.h duration.cc symrec.o
    $(CC) -c duration.cc $(FLAGS)

segmentation.o: segmentation.h segmentation.cc cellcyk.o sample.o gmm.o
    $(CC) -c segmentation.cc $(FLAGS)

tablecyk.o: tablecyk.h tablecyk.cc cellcyk.o hypothesis.o
    $(CC) -c tablecyk.cc $(FLAGS)

cellcyk.o: cellcyk.h cellcyk.cc hypothesis.o
    $(CC) -c cellcyk.cc $(FLAGS)

hypothesis.o: hypothesis.h hypothesis.cc production.o grammar.o
    $(CC) -c hypothesis.cc $(FLAGS)

logspace.o: logspace.h logspace.cc cellcyk.o
    $(CC) -c logspace.cc $(FLAGS)

sparel.o: sparel.h sparel.cc hypothesis.o cellcyk.o gmm.o sample.o
    $(CC) -c sparel.cc $(FLAGS)

gmm.o: gmm.cc gmm.h
    $(CC) -c gmm.cc $(FLAGS)

stroke.o: stroke.cc stroke.h
    $(CC) -c stroke.cc $(FLAGS)

symfeatures.o: symfeatures.cc online.o featureson.o
    $(CC) -c symfeatures.cc $(FLAGS)

featureson.o: featureson.cc featureson.h online.o
    $(CC) -c featureson.cc $(FLAGS)

online.o: online.cc online.h
    $(CC) -c online.cc $(FLAGS)

#rnnlib4seshat
Random.o: rnnlib4seshat/Random.cpp
    $(CC) -c rnnlib4seshat/Random.cpp $(FLAGS)

DataExporter.o: rnnlib4seshat/DataExporter.cpp
    $(CC) -c rnnlib4seshat/DataExporter.cpp $(FLAGS)

WeightContainer.o: rnnlib4seshat/WeightContainer.cpp
    $(CC) -c rnnlib4seshat/WeightContainer.cpp $(FLAGS)

ClassificationLayer.o: rnnlib4seshat/ClassificationLayer.cpp
    $(CC) -c rnnlib4seshat/ClassificationLayer.cpp $(FLAGS)

Layer.o: rnnlib4seshat/Layer.cpp
    $(CC) -c rnnlib4seshat/Layer.cpp $(FLAGS)

Mdrnn.o: rnnlib4seshat/Mdrnn.cpp
    $(CC) -c rnnlib4seshat/Mdrnn.cpp $(FLAGS)

Optimiser.o: rnnlib4seshat/Optimiser.cpp
    $(CC) -c rnnlib4seshat/Optimiser.cpp $(FLAGS)

clean:
    rm -f *.o *~ \#*\#

来源：https://stackoverflow.com/questions/59444782/libxerces-c-so-undefined-reference-to-many-packages

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