安装GD--------------------------------------------------------------------
tar -zxvf gd-2.0.27.tar.gz
cd gd-2.0.27
./configure --prefix=/usr/local/gd2
make
make install
安装PHP-------------------------------------------------------------------
tar zxvf php-4.3.8.tar.gz
cd php-4.3.8
./configure --with-mysql --with-gd=/usr/local/gd2 --with-apxs2=/usr/www/bin/apxs
make
make install
cp php.ini-dist /usr/local/lib/php.ini （出处：Viphot）Linux下安装GD
原文：http://www.jb51.net/article/1472.htm
