Pytorch/torch/csrc/api/src/serialize/output-archive.cpp:39: error: undefined reference to 'torch::jit::ExportModule

Hi,
Below is my C++ code

#include <torch/torch.h>
#include <torch/script.h> // One-stop header.

#include
#include

struct ID : torch::nn::Module {};
using namespace std;

int main()
{
auto test = std::make_shared();
//torch::load(spkr_id,“net.pt”);
torch::save(test,“net.pt”);
}

I’m getting Linkage error As I’m running on the Android Platform with cross-compiled PyTorch libraries

rm: cannot remove ‘pytorch_app’: No such file or directory
– Check for working CXX compiler: /home/suresh/ANdroid_NEW_NDK/android-ndk-r21/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++
– Check for working CXX compiler: /home/suresh/ANdroid_NEW_NDK/android-ndk-r21/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++ – works
– Detecting CXX compiler ABI info
– Detecting CXX compiler ABI info - done
– Detecting CXX compile features

– Detecting CXX compile features - done
– Configuring done
– Generating done
– Build files have been written to: /home/suresh/spkrid_ali/spkrid_jio/testsrc/android/build
Scanning dependencies of target pytorch_app
[ 25%] Building CXX object CMakeFiles/pytorch_app.dir/src/mian.cpp.o
[ 50%] Building CXX object CMakeFiles/pytorch_app.dir/src/test.cpp.o
[ 75%] Building CXX object CMakeFiles/pytorch_app.dir/src/test_nn.cpp.o
[100%] Linking CXX executable pytorch_app
/home/suresh/pytorch/torch/csrc/api/src/serialize/output-archive.cpp:39: error: undefined reference to ‘torch::jit::ExportModule(torch::jit::script::Module const&, std::__ndk1::basic_string<char, std::__ndk1::char_traits, std::__ndk1::allocator > const&, std::__ndk1::unordered_map<std::__ndk1::basic_string<char, std::__ndk1::char_traits, std::__ndk1::allocator >, std::__ndk1::basic_string<char, std::__ndk1::char_traits, std::__ndk1::allocator >, std::__ndk1::hash<std::__ndk1::basic_string<char, std::__ndk1::char_traits, std::__ndk1::allocator > >, std::__ndk1::equal_to<std::__ndk1::basic_string<char, std::__ndk1::char_traits, std::__ndk1::allocator > >, std::__ndk1::allocator<std::__ndk1::pair<std::__ndk1::basic_string<char, std::__ndk1::char_traits, std::__ndk1::allocator > const, std::__ndk1::basic_string<char, std::__ndk1::char_traits, std::__ndk1::allocator > > > > const&, bool)’
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
CMakeFiles/pytorch_app.dir/build.make:157: recipe for target ‘pytorch_app’ failed
make[2]: *** [pytorch_app] Error 1
CMakeFiles/Makefile2:67: recipe for target ‘CMakeFiles/pytorch_app.dir/all’ failed
make[1]: *** [CMakeFiles/pytorch_app.dir/all] Error 2
Makefile:83: recipe for target ‘all’ failed
make: *** [all] Error 2

for “torch:: load(test, “net.pt”);” Compilation & Linking got successful, But I’m stuck in torch:: save() API, is there any wrong in implementation or else definitions in the torch library is not compiled?

Please help me because I’m new to this. Thanks in Advance.

Our Android builds currently exclude the code for saving because they are intended for inference.