Libtorch does not link together with boost

[HariSeldon]

Hi all,

I would like to report a build issue when linking an application that uses both libtorch and boost.

tensor_test.cpp:

#include <boost/program_options/options_description.hpp>

int main() {
    boost::program_options::options_description d("");
}

CMakeLists.txt:

cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
project(torch_example)

set(Torch_DIR "${CMAKE_SOURCE_DIR}/libtorch/share/cmake/Torch")
set(Caffe2_DIR "${CMAKE_SOURCE_DIR}/libtorch/share/cmake/Caffe2")
find_package(Torch REQUIRED)

message(STATUS ${TORCH_LIBRARIES})

find_package(Boost COMPONENTS program_options REQUIRED)

add_executable(main tensor_test.cpp)
target_link_libraries(main Boost::program_options ${TORCH_LIBRARIES})

set_property(TARGET main PROPERTY CXX_STANDARD 11)

This is the link error I get:

Scanning dependencies of target main
[ 50%] Building CXX object CMakeFiles/main.dir/tensor_test.cpp.o
[100%] Linking CXX executable main
CMakeFiles/main.dir/tensor_test.cpp.o: In function `main':
tensor_test.cpp:(.text+0x6b): undefined reference to `boost::program_options::options_description::options_description(std::string const&, unsigned int, unsigned int)'

When removing the ${TORCH_LIBRARIES} variable from target_link_libraries linking works correctly.

The same issue arises with other shared libraries.

I guess this is a similar issue to the one reported here:

Compile libtorch with pcl cause segmentation fault

I try to compile libtorch with PCL library. Both the libraries work fine when compiled dependently, but segmentation fault occurs when complie these libraries together. cmake file: cmake_minimum_required(VERSION 3.0 FATAL_ERROR) project(custom_ops) SET(CMAKE_BUILD_TYPE "Debug") list(APPEND CMAKE_PREFIX_PATH ${CMAKE_CURRENT_SOURCE_DIR}/libtorch) find_package(Torch REQUIRED) find_package(PCL 1.8 REQUIRED COMPONENTS common io visualization) include_directories( ${PCL_INCLUDE_DIRS} ) …

I am on Ubuntu18.04 and I am using libtorch 1.0.0.dev20181022, boost 1.65.1

[albanD]

Hi,

I just used your two files and that compiles fine for me on Ubuntu 14.04.
Maybe try including them by two different calls?

target_link_libraries(main Boost::program_options)
target_link_libraries(main ${TORCH_LIBRARIES})

[HariSeldon]

Hi,

thank you for trying it out.
The problem seems related to the Ubuntu version.
I confirm that the build works with 14.04, but it fails on Ubuntu 16.04 and 18.04.

I particular, I moved the object file from the working 14.04 machine to the 16.04 machine and the link stage failed.
I have used g++ 5.5.0 20171010 on both.

(The suggestion of duplicating the target_link_libraries function does not make a difference)

[HariSeldon]

Just for the record,
I have worked around the problem by compiling libtorch locally on my machine from
source.

[KevNull]

Does anybody know how to fix this problem? I’m finding the same thing happens with another proprietary library.

[KevNull]

Could this be caused by the nightly build coming with an absolute file path to /usr/local/cuda/lib64/libculibos.a in Caffe2Targets.cmake?

[christianperone (Christian S. Perone)]

I think that this can be related to the C++11 ABI as well, see this comment I posted: Issues linking with libtorch (C++11 ABI?), I’m facing similar issues with other libraries. The issue seems that libtorch is adding this definition to compilation _GLIBCXX_USE_CXX11_ABI=0, which forces GCC to use old C++11 ABI, and this is incompatible with your boost dependency, hence the error you’re getting, because the std::string was changed between old and new C++11 ABI.

[Oldpan]

Hi,there is a similar problem …
When libtorch is built with opencv :

cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
project(simnet)

find_package(Torch REQUIRED)
find_package(OpenCV 4 REQUIRED)

message(STATUS "Pytorch status:")
message(STATUS "    libraries: ${TORCH_LIBRARIES}")

message(STATUS "OpenCV library status:")
message(STATUS "    version: ${OpenCV_VERSION}")
message(STATUS "    libraries: ${OpenCV_LIBS}")
message(STATUS "    include path: ${OpenCV_INCLUDE_DIRS}")

add_executable(simnet main.cpp)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)

target_link_libraries(simnet "${TORCH_LIBRARIES}")
target_link_libraries(simnet "${OpenCV_LIBS}")

It will give rise to ‘undefined reference to `cv::imread(std::string const&, int)’’
And when I removed ‘target_link_libraries(simnet “${TORCH_LIBRARIES}”)’ and the build process succeeded.

[nallezard (na)]

Hi, I have the same problem with opencv and libtorch
I’ve also tried this piece of code : https://github.com/tobiascz/MNIST_Pytorch_python_and_capi
But it does’nt work either…
Has anyone found the solution?
Thanks

[KevNull]

I was able to fix it by building from source instead of trying to use the nightly builds.

[nallezard (na)]

Thanks for the reply KevNull
I’ve just build pytorch from source now and i search how to link it with my code.

[yf225 (PyTorch Developer, Meta)]

We now have new ABI binaries for libtorch. They can be found on
http://pytorch.org, or at https://github.com/pytorch/pytorch/issues/17492#issuecomment-524692441.