这个是EGE的程序，很久之前还可以运行，现在不行了

#include<graphics.h>
int main()
{
    initgraph(640, 480);
    setcolor(GREEN);
	line(100, 100, 500, 200);
    getch();
	closegraph();
    return 0;
}

错误：

undefined reference to `ege::initgraph(int, int,int)'
undefined reference to `ege::setcolor(unsigned int, ege::IMAGE*)'
undefined reference to `ege::line(int, int, int, int, ege::IMAGE*)'
undefined reference to `ege::getch()'
undefined reference to `ege::closegraph()'

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