Question

编写一个c ++程序并尝试使用 Boost.Python 使其与python兼容。在Eclipse中运行c ++程序运行正常。但是，当我从该c ++程序创建一个共享库（vectorEg.so）并尝试在python中导入它时，它显示一个错误。

In [1]: import vectorEg
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-fd697b4a9962> in <module>()
----> 1 import vectorEg

ImportError: ./vectorEg.so: undefined symbol: _ZN4itppplIdEENS_3VecIT_EERKS3_S5_

C ++代码：

#include <itpp/itbase.h>
#include <boost/python.hpp>
using namespace itpp;

vec testFunc()
{
  //Declare vectors and matricies:
  vec a, b, c;
  a = linspace(1.0, 2.0, 10);
  //Use a string of values to define a vector:
  b = "0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0";
  //Add two vectors:
  c = a + b;
  return c;
}

BOOST_PYTHON_MODULE(vectorEg)
{
        using namespace boost::python;
        using namespace itpp;
        def("testFunc", testFunc);
}

还尝试使用itpp :: Vec作为矢量声明。

#include <itpp/itbase.h>
#include <boost/python.hpp>
using namespace itpp;

itpp::Vec<double> testFunc()
{
  //Declare vectors and matricies:
  itpp::Vec<double> a, b, c;
  a = linspace(1.0, 2.0, 10);
  //Use a string of values to define a vector:
  b = "0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0";
  //Add two vectors:
  c = a + b;
  return c;
}

BOOST_PYTHON_MODULE(vectorEg)
{
        using namespace boost::python;
        using namespace itpp;
        def("testFunc", testFunc);
}

对于共享库的编译和创建，我正在使用这段代码

g++ -c vectorEg.cpp -litpp -o vectorEg.o -fPIC -I/usr/include/python2.7/
g++ -shared vectorEg.o -lboost_python -lpython2.7 -o vectorEg.so
sudo cp vectorEg.so /usr/lib/python2.7/dist-packages # adding file to python path.

另外我安装了IT ++

sudo apt-get install libitpp-dev # for ubuntu 16.0.4

无法使用Boost.Python在python中运行模块

0 个答案: