Question

我正在尝试使用HDF5文件用法和pyTorch（C ++ API）在C ++中设置我的项目，并且存在一些链接问题。

所以...我运行Ubuntu 18.04 LTS。我已经安装了带有APT的HDF5，然后从pyTorch下载zip，并将其放入我的项目结构中的third_party目录中。

project/   
--data/  
----data.h5  
--third_party/  
----libtorch/  
--main.cpp  
--CMakeLists.txt  
--run.sh

我的main.cpp看起来像：

#include <iostream>
#include <torch/torch.h>
#include "H5Cpp.h"

#define PRINT(x) std::cout<<x<<std::endl;

const H5std_string FILE_NAME("real/path/to/project/data/data.h5");

int main() {

    // Create a vector of inputs.
    std::vector<torch::jit::IValue> inputs;
    inputs.push_back(torch::ones({1, 3, 3, 3}));

    H5::H5File file(FILE_NAME, H5F_ACC_RDONLY);
}

然后CMakeLists：

project(cpptorch)

set(CMAKE_CXX_STANDARD 14)

# pyTorch
find_package(Torch REQUIRED)

# HDF5
find_package(HDF5 REQUIRED COMPONENTS C CXX HL REQUIRED)
include_directories( ${HDF5_INCLUDE_DIRS} )
link_directories( ${HDF5_LIBRARY_DIRS} )

add_executable(cpptorch main.cpp)

target_link_libraries(cpptorch ${HDF5_CXX_LIBRARIES})
target_link_libraries(cpptorch ${TORCH_LIBRARIES})

然后运行.sh

parent_path=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )

mkdir -p ${parent_path}/build
cd ${parent_path}/build
echo ${parent_path}
cmake -DCMAKE_PREFIX_PATH=${parent_path}/third_party/libtorch ..
make 
./cpptorch 
cd ..

现在我将描述这个问题。例如，当我在CMake中注释掉所有与HDF5连接的线时，然后手电筒就可以正常工作，就像我在CMake中注释掉Torch的线一样— HDF5运行良好。但是，当我尝试运行以上代码时，会收到错误消息：

CMakeFiles/cpptorch.dir/main.cpp.o: In function `main':
main.cpp:(.text+0x5b): undefined reference to `H5::H5File::H5File(std::string const&, unsigned int, H5::FileCreatPropList const&, H5::FileAccPropList const&)'
collect2: error: ld returned 1 exit status
CMakeFiles/cpptorch.dir/build.make:92: recipe for target 'cpptorch' failed
make[2]: *** [cpptorch] Error 1
CMakeFiles/Makefile2:72: recipe for target 'CMakeFiles/cpptorch.dir/all' failed
make[1]: *** [CMakeFiles/cpptorch.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2
./run.sh: line 8: ./cpptorch: No such file or directory

如果有人知道如何解决？我发现它是链接问题，但不确定。

将火炬和hdf5 lib链接在一起的问题

0 个答案: