1.安装zlib tar zxvf zlib-1.2.3.tar.gz cd zlib-1.2.3 ./configure --prefix=/usr/local/zlib make make install
2.安装libpng tar zxvf libpng-1.2.8.tar.tar cd libpng-1.2.8 mv ./scripts/makefile.linux ./makefile make make install 注意，这里的makefile不是用./configure生成，而是直接从scripts/里拷一个
3.安装freetype tar zxvf freetype-2.1.10.tar.gz cd freetype-2.1.10 ./configure --prefix=/usr/local/freetype make make install
4.安装Jpeg tar zxvf jpegsrc.v6b.tar.gz cd jpeg-6b/ ./configure --prefix=/usr/local/jpeg6 --enable-shared --enable-static make make install 注意，这里configure一定要带--enable-shared参数，不然，不会生成共享库
5.安装GD tar zxvf gd-2.0.33.tar.gz cd gd-2.0.33 ./configure --with-png --with-jpeg --with-freetype=/usr/local/freetype make make install
6.重新编译PHP tar zxvf php-4.3.9.tar.gz cd php-4.3.9 ./configure (以前的参数) --with-gd --enable-gd-native-ttf --with-zlib-dir=/usr/local/zlib --with-png --with-jpeg --with-freetype-dir=/usr/local/freetype make make install
