How to build with -std=c++11 about sentencepiece HOT 5 CLOSED

Could you let me know the OS and distribution?

Did you see some errors when running g++ manually?
/usr/local/gcc-5/4/0/bin/g++ -std=c++11 foo.cc

from sentencepiece.

My OS is CentOS Linux 7 (Core).

There is no error when I run g++ manually with -std=c++11 option.
/usr/local/gcc-5.4.0/bin/g++ -std=c++11 foo.cc

I am trying to embed sentencepiece into different project.
And I need to build sentencepiece with -std=c++11 option because the project built with -std=c++11 option.

I have code as shown below

...
#include <sentencepiece_processor.h>
...
  sentencepiece::SentencePieceProcessor processor;
...
  const auto status = processor.Load("sentencepiece model file");
...
  processor.Encode(src, &pieces_src);
...

When I compile my project it shows error shown below

undefined reference to ...
`sentencepiece::SentencePieceProcessor::Encode(sentencepiece::util::min_string_view, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >*) const' 

from sentencepiece.

Seems that it's not related to the original question, but you can fix it by adding

-L/usr/local/lib -lsentencepiece -lsentencepiece_train -lprotobuf

to linker option. This option can be found with

% pkg-config --libs sentencepiece

from sentencepiece.

I am sorry, I was not clear.

I think there is no problem in linker option.
Compiler shows the error message not because of wrong linker option.
It shows the error message because of sentencepiece is compiled without std=c++11 option.

I checked compiled sentensepiece library and there is Encode() functions shown below

00000000000265f0 T sentencepiece::SentencePieceProcessor::Encode(sentencepiece::util::min_string_view, sentencepiece::SentencePieceText*) const
0000000000022df0 T sentencepiece::SentencePieceProcessor::Encode(sentencepiece::util::min_string_view, std::vector<std::string, std::allocator<std::string> >*) const
00000000000232f0 T sentencepiece::SentencePieceProcessor::Encode(sentencepiece::util::min_string_view, std::vector<int, std::allocator<int> >*) const

but my program (that uses sentencepiece library) needs Encode() function defined as follow.

sentencepiece::SentencePieceProcessor::Encode(sentencepiece::util::min_string_view, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >*) const

I had same problem with other library and I solved it by compling the library with std=c++11 option.
But I was not able to build sentencepiece with std=c++11 option.

from sentencepiece.

In general, C++ has no ABI incompatibilities -- the same linker and compiler must be used in your program. --std=c++11 may not help this issue.

from sentencepiece.