GD 库不支持 jpeg?

找了一些文章看啦，说安装 类似jpegsrc.v9b.tar.gz 等，然后在进入php源码ext/gd指定jpeg目录编译安装，依然不行，各位，你们是怎么解决的？
[GD Version] => bundled (2.1.0 compatible)
[FreeType Support] => 1
[FreeType Linkage] => with freetype
[GIF Read Support] => 1
[GIF Create Support] => 1
[JPEG Support] =>
[PNG Support] => 1
[WBMP Support] => 1
[XPM Support] =>
[XBM Support] => 1
[WebP Support] =>
[BMP Support] => 1
[JIS-mapped Japanese Font Support] =>