Linker error:Undefined symbol _SVGA_driver in module SVGASUB.C
我用的编译器是Borlandc++,dos环境下的一个古老的编译器
（这是报错的代码）
int SVGAInit(void)
{
/*if (n == 0)
{*/
extern void _Cdecl SVGA_driver(void);
int GraphDriver, GraphMode = 4;
GraphDriver = installuserdriver("SVGA", NULL);
if (GraphDriver < 0)
{
printf("InstallUserDriver Fail\n");
return -1;
}
if (registerbgidriver(SVGA_driver) < 0) {
printf("RegisterBGIDriver Fail\n");
return -1;
}
initgraph(&GraphDriver, &GraphMode, "");