im new with gcc.I dont know what i do bad when i write the command line to compiling. i have 3 files, 2 .cpp and 1 .h ,the first lines of my files:
main.cpp
#define GLUT_DISABLE_ATEXIT_HACK
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include "GL/glut.h"
#include "Funciones.h"
using namespace std;
int main(int argc, char **argv)
function.h
void init_scene();
void render_scene();
GLvoid initGL();
GLvoid window_display();
GLvoid window_reshape(GLsizei width, GLsizei height);
GLvoid window_key(unsigned char key, int x, int y);
GLvoid callback_special(int key, int x, int y);
GLvoid callback_mouse(int button, int state, int x, int y);
GLvoid callback_motion(int x, int y);
int CvtoGLx(int n);
int CvtoGLy(int n);
//function called on each frame
GLvoid window_idle();
function.cpp
#include "Funciones.h"
#include "GL/Glut.h"
GLvoid callback_special(int key, int x, int y)
i use this command line to compile :
g++ main.cpp -lglut -lGL -o eject
and this display this error:
/tmp/cceLFOgn.o:test1.cpp:function main: error: undefined reference to 'initGL()'
/tmp/cceLFOgn.o:test1.cpp:function main: error: undefined reference to 'init_scene()'
/tmp/cceLFOgn.o:test1.cpp:function main: error: undefined reference to 'window_display()'
/tmp/cceLFOgn.o:test1.cpp:function main: error: undefined reference to 'window_reshape(int, int)'
/tmp/cceLFOgn.o:test1.cpp:function main: error: undefined reference to 'window_key(unsigned char, int, int)'
g++ -c main.cpp function.cpp
用于编译两个文件(这将生成目标文件main.o
和function.o
),然后g++ -lglut -lGL main.o function.o -o eject
to link。
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