Linux环境下安装PHP的gd库

当前使用的安装包版本：

freetype-2.4.0.tar.bz2 

jpegsrc.v9.tar.gz

libpng-1.6.28.tar.gz

1、安装freetype

tar jxvf freetype-2.4.0.tar.bz2
cd freetype-2.4.0
./configure --prefix=/usr/local/freetype

make && make install

2、安装jpegsrc

tar zxvf jpegsrc.v9.tar.gz
cd jpeg-9
./configure --prefix=/usr/local/jpeg && make && make install
mkdir -p /usr/local/jpeg/include
mkdir -p /usr/local/jpeg/lib
mkdir -p /usr/local/jpeg/bin
mkdir -p /usr/local/jpeg/man/man1

3、安装libpng

tar zxvf libpng-1.6.28.tar.gz
cd libpng-1.6.28
./configure --prefix=/usr/local/libpng

make && make install

4、进入PHP安装包里面的ext文件夹，找到gd扩展

cd /home/local/php-5.6.25/ext/gd

/usr/local/php/bin/phpize

./configure --with-php-config=/usr/local/php/bin/php-config --with-jpeg-dir=/usr/local/jpeg --with-png-dir=/usr/local/libpng --with-freetype-dir=/usr/local/freetype

如果出现configure: error: Problem with libpng.(a|so) or libz.(a|so). Please check config.log for more information

换个版本的libpng重新安装就好

make && make install

cp /usr/local/php/lib/php/extensions/no-debug-zts-20131226/gd.so /usr/local/php/extension/gd.so

vim /usr/local/php/etc/php.ini 添加:extension=gd.so

重启服务器，/usr/local/php/bin/php -m 就能看到了