OpenGL:无法使用freeGLUT执行渲染?C++

我今天刚开始使用freeGLUT，我已经很好地安装了所有东西。我可以创建一个基本的窗口，但每当我调用几乎所有的渲染方法时，编译都会失败。我正在使用以下代码：

#include "math_lib.h"
#include <stdlib.h>
#include <GL/freeglut.h>
void render(void);
int main(int argc, char** argv) {
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
    glutInitWindowPosition(100, 100);
    glutInitWindowSize(640, 480);
    glutCreateWindow("Simple GLUT Application");
    glutDisplayFunc(render);    
    glutMainLoop();
}
void render(void) {
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glBegin(GL_TRIANGLES);
        glColor3f(1, 0, 0);
        glVertex2f(-0.5, -0.5);
        glColor3f(0, 1, 0);
        glVertex2f(0.5, -0.5);
        glColor3f(0, 0, 1);
        glVertex2f(0.0, 0.5);
    glEnd();
    glutSwapBuffers();
}

我得到的错误是：

C:UsersUserDropboxNetBeans WorkspaceOpenGL_Testing/main.cpp:29: undefined reference to `glClear@4'
C:UsersUserDropboxNetBeans WorkspaceOpenGL_Testing/main.cpp:31: undefined reference to `glBegin@4'
C:UsersUserDropboxNetBeans WorkspaceOpenGL_Testing/main.cpp:32: undefined reference to `glColor3f@12'
C:UsersUserDropboxNetBeans WorkspaceOpenGL_Testing/main.cpp:33: undefined reference to `glVertex2f@8'
C:UsersUserDropboxNetBeans WorkspaceOpenGL_Testing/main.cpp:34: undefined reference to `glColor3f@12'
C:UsersUserDropboxNetBeans WorkspaceOpenGL_Testing/main.cpp:35: undefined reference to `glVertex2f@8'
C:UsersUserDropboxNetBeans WorkspaceOpenGL_Testing/main.cpp:36: undefined reference to `glColor3f@12'
C:UsersUserDropboxNetBeans WorkspaceOpenGL_Testing/main.cpp:37: undefined reference to `glVertex2f@8'
C:UsersUserDropboxNetBeans WorkspaceOpenGL_Testing/main.cpp:38: undefined reference to `glEnd@0'

那么，我是做错了什么，还是只是错过了一个进口？