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Posted to dev@singa.apache.org by "Moaz Reyad (JIRA)" <ji...@apache.org> on 2016/11/19 14:18:58 UTC
[jira] [Created] (SINGA-272) singa::logging classes are missing
from libsinga.so
Moaz Reyad created SINGA-272:
--------------------------------
Summary: singa::logging classes are missing from libsinga.so
Key: SINGA-272
URL: https://issues.apache.org/jira/browse/SINGA-272
Project: Singa
Issue Type: Bug
Environment: Linux (Ubuntu)
Reporter: Moaz Reyad
When I try to compile a C++ file like
{code:title=test.cpp|borderStyle=solid}
#include "singa/io/encoder.h"
#include "singa/io/decoder.h"
#include <iostream>
#include <sstream>
#include <algorithm>
using namespace std;
using singa::Shape;
using singa::Tensor;
int main()
{
cout << "Testing..." << endl;
singa::CSVEncoder encoder;
singa::CSVDecoder decoder;
singa::DecoderConf decoder_conf;
decoder_conf.set_has_label(true);
decoder.Setup(decoder_conf);
float in_data[] = {1.23f, 4.5f, 5.1f, 3.33f, 0.44f};
std::string in_str = "2, 1.23, 4.5, 5.1, 3.33, 0.44";
int in_label = 2;
size_t size = 5;
std::vector<Tensor> input;
Tensor data(Shape{size}, singa::kFloat32), label(Shape{1}, singa::kInt);
data.CopyDataFromHostPtr<float>(in_data, size);
label.CopyDataFromHostPtr<int>(&in_label, 1);
input.push_back(data);
input.push_back(label);
std::string value = encoder.Encode(input);
in_str.erase(std::remove(in_str.begin(), in_str.end(), ' '), in_str.end());
std::vector<Tensor> output = decoder.Decode(value);
const auto* out_data = output.at(0).data<float>();
const auto* out_label = output.at(1).data<int>();
return 0;
}
{code}
I get this error:
$ g++ ./test.cpp -l singa
/tmp/cc46xzSI.o: In function `singa::Block::data() const':
test.cpp:(.text._ZNK5singa5Block4dataEv[_ZNK5singa5Block4dataEv]+0x4b): undefined reference to `singa::logging::LogMessageFatal::LogMessageFatal(char const*, int)'
test.cpp:(.text._ZNK5singa5Block4dataEv[_ZNK5singa5Block4dataEv]+0x7f): undefined reference to `singa::logging::LogMessageFatal::~LogMessageFatal()'
test.cpp:(.text._ZNK5singa5Block4dataEv[_ZNK5singa5Block4dataEv]+0xba): undefined reference to `singa::logging::LogMessageFatal::~LogMessageFatal()'
collect2: error: ld returned 1 exit status
I think singa::logging classes are not linked correctly in libsinga.so during installation.
The workaround is to do:
$g++ -DUSE_GLOG ./test.cpp -l singa -l glog
But it is better if libsinga.so is built with singa::logging classes.
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