Question

这是我正在尝试运行的程序

////////////////////////////////////////////////////          
// square.cpp
//
// Stripped down OpenGL program that draws a square.
// 
// Sumanta Guha.
////////////////////////////////////////////////////

#include <iostream>

#ifdef __APPLE__
#  include <GLUT/glut.h>
#else
#  include <GL/glut.h>
#endif

using namespace std;

// Drawing (display) routine.
void drawScene(void)
{
   // Clear screen to background color.
   glClear(GL_COLOR_BUFFER_BIT);

   // Set foreground (or drawing) color.
   glColor3f(0.0, 0.0, 0.0);

   // Draw a polygon with specified vertices.
   glBegin(GL_POLYGON);
      glVertex3f(20.0, 20.0, 0.0);
      glVertex3f(80.0, 20.0, 0.0);
      glVertex3f(80.0, 80.0, 0.0);
      glVertex3f(20.0, 80.0, 0.0);
   glEnd();

   // Flush created objects to the screen, i.e., force rendering.
   glFlush(); 
}

// Initialization routine.
void setup(void) 
{
   // Set background (or clearing) color.
   glClearColor(1.0, 1.0, 1.0, 0.0); 
}

// OpenGL window reshape routine.
void resize(int w, int h)
{
   // Set viewport size to be entire OpenGL window.
   glViewport(0, 0, (GLsizei)w, (GLsizei)h);

   // Set matrix mode to projection.
   glMatrixMode(GL_PROJECTION);

   // Clear current projection matrix to identity.
   glLoadIdentity();

   // Specify the orthographic (or perpendicular) projection, 
   // i.e., define the viewing box.
   glOrtho(0.0, 100.0, 0.0, 100.0, -1.0, 1.0);

   // Set matrix mode to modelview.
   glMatrixMode(GL_MODELVIEW);

   // Clear current modelview matrix to identity.
   glLoadIdentity();
}

// Keyboard input processing routine.
void keyInput(unsigned char key, int x, int y)
{
   switch(key) 
   {
      // Press escape to exit.
      case 27:
         exit(0);
         break;
      default:
         break;
   }
}

// Main routine: defines window properties, creates window,
// registers callback routines and begins processing.
int main(int argc, char **argv) 
{  
   // Initialize GLUT.
   glutInit(&argc, argv);

   // Set display mode as single-buffered and RGB color.
   glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB); 

   // Set OpenGL window size.
   glutInitWindowSize(500, 500);

   // Set position of OpenGL window upper-left corner.
   glutInitWindowPosition(100, 100); 

   // Create OpenGL window with title.
   glutCreateWindow("square.cpp");

   // Initialize.
   setup(); 

   // Register display routine.
   glutDisplayFunc(drawScene); 

   // Register reshape routine.
   glutReshapeFunc(resize);  

   // Register keyboard routine.
   glutKeyboardFunc(keyInput);

   // Begin processing.
   glutMainLoop(); 

   return 0;  
}

我确信我安装了过量的OpenGL并且是最新的，这是我得到的错误（我按照2011年的书中的方式编写代码）：

ubuntu：〜/ Downloads / Code $ gcc square.cpp -o square -I / usr / include / -L / usr / lib -lglut -lGL -lGLU -lX11 /tmp/ccAq6h4h.o:square.cpp:function __static_initialization_and_destruction_0（int，int）：错误：未定义引用'std :: ios_base :: Init :: Init（）' /tmp/ccAq6h4h.o:square.cpp:function __static_initialization_and_destruction_0（int，int）：错误：未定义引用'std :: ios_base :: Init :: ~Init（）'collect2：ld返回1 退出状态

我编写了自己的代码并将其作为c文件保存并编译

Answer 1

编译错误文件时出现了一个简单的错误。

用OpenGL编译错误

1 个答案: