pybind11使用总结(依赖python3.7版本)

• 先安装python3.7的源码；
• test_py.py调用test_cpp中导出函数add()及python三方库：

import os
import pandas as pd
import numpy as np
import libtest as core
 
def test(a):
    print(pd.__version__)
    print(np.__version__)
    print(core.add(1,2))
 

• test_cpp.cpp导出函数并调用test_py.py中函数test()

  #include 
  #include 
  #include "include/pybind11/pybind11.h"
  #include "test_cpp.h"
   
  int add(int i,int j){
       return i+j;
  }
   
  PYBIND11_MODULE(libtest,m){
      m.doc()="pybind11 example";
      m.def("add",&add,"add two number");
  }
   
  extern "c"{
      int todo(){
          pybind11::scoped_interpreter m_python;
          pybind11::object scope=pybind11::module::import("test_py");
          scope.attr("test")(10);
          return 0;
      }
  }
   
  

  test_cpp.h:

extern "C"{
    int todo();
}

• 编译cmakelist.txt：

 

 linuxBuild.sh:

执行bash linuxBuild.sh编译； 

• test_cpp_exe.cpp为主进程，调用test_cpp.cpp中test函数:

#ifdef _WIN32
    #include 
#else
    #include 
#endif
    #include 
 
typedef void (* todo)(void);
 
int main(){
    auto m_gdllhand = dlopen("./test/Ouput/linux/Release/libtest.so",RTLD_NOW|RTLD_GLOBAL);
    if (m_gdllhand==nullptr){
        std::cout << "test..." << std::endl;
        return -1;
    }
    auto m_get_init =  (todo)dlsym(m_gdllhand,"todo");
    m_get_init();
    return 0;
}

编译执行：

g++ test_cpp_exe.cpp -o test_cpp_exe -l test -l dl -L ./ 

最后运行脚本run.sh：

#!/bin/bash
 
pwd_path=`pwd`
export LD_LIBRARY_PATH=${pwd_path}:$LD_LIBRARY_PATH
./test_cpp_exe

执行结果：