I've writed a toy example using OpenGL and c++
#include <GL/glut.h>
void init(void)
{
glClearColor(0.0, 0.0, 0.0, 0.0);
glMatrixMode(GL_PROJECTION);
glOrtho(-5, 5, -5, 5, 5, 15);
glMatrixMode(GL_MODELVIEW);
gluLookAt(0, 0, 10, 0, 0, 0, 0, 1, 0);
return;
}
void display(void)
{
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(1.0, 0, 0);
glutWireTeapot(3);
glFlush();
return;
}
void test()
{
int argc = 0;
char **argv=NULL;
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);
glutInitWindowPosition(0, 0);
glutInitWindowSize(300, 300);
glutCreateWindow("OpenGL 3D View");
init();
glutDisplayFunc(display);
glutMainLoop();
}
And then build the code using
gcc -o test test.c -lGL -lGLU -lglut
It works fine. But I want to call this function in Python, than I've tried
# include <pybind11/pybind11.h>
...
PYBIND11_MODULE(py2cpp, m)
{
m.doc() = "opengl test";
m.def("display", &test, "test opengl");
}
Build code above using
g++ -shared -std=c++11 -fPIC `python3 -m pybind11 --includes` -lGL -lGLU -lglut test.cpp -o py2cpp`python3-config --extension-suffix` -I /home/xiaohanbao/anaconda3/envs/ros/include/python3.8
I compiled the code successfully. But when I import the library using import py2cpp, I got
Import Error: /path/py2cpp.cpython-38-x86_64-linux-gnu.so: undefined symbol: glutInitWindowPosition
Is there any way to fix it?