php安装gd库扩展

gd库主要是用来图像渲染的。gd库依赖以下libjpeg、libpng、freetype2、xpm等安装库。在php中启用gd扩展有两种方式一个是动态编译方式，一个是静态编译方式。动态编译方式不需要重新编译php，静态编译方式必须重新编译php。但是无论是动态编译还是静态编译都要先安装gd的相关依赖库文件，并且在编译gd时加到configure参数中。

1、安装xpm

 yum install libXpm-devel

2、安装zlib

   wget http://zlib.net/zlib-1.2.8.tar.gz
   tar -xzvf zlib-1.2.8.tar.gz
   cd zlib-1.2.8
   ./configure 
   make && make install
   make clean && make distclean
   cd ../

3、安装libjpeg jpeg-9b

   wget http://www.ijg.org/files/jpegsrc.v9b.tar.gz
   tar -xzvf jpegsrc.v9b.tar.gz
   cd jpegsrc.v9b
   ./configure \
   --prefix=/usr/lib64 \
   --enable-shared \
   --enable-static 

   make && make instll
   make clean && make distclean
   libtool --finish /usr/local/jpeg/lib
   cd ../

4、安装libpng

   ftp ftp://ftp.simplesystems.org/pub/libpng/png/src/libpng16/libpng-1.6.26.tar.gz
   tar -xzvf libpng-1.6.26.tar.gz
   cd libpng-1.6.26

   ./configure \
   --enable-shared \
   --enable-static 

   make && make install
   make clean && make && make distclean
   cd ../

5、安装freetype2

   wget http://download.savannah.gnu.org/releases/freetype/freetype-2.7.tar.gz
   tar -xzvf freetype-2.7.tar.gz
   cd freetype-2.7
   ./configure \
   --prefix=/usr/lib64
   make && make install 
   make clean && make distclean
   cd ../

6、gd安装

php安装时使用--with-gd必须要执行以下命令，在直接安装gd库是不需要试用-dir,但是在php安装的时候需要-dir

   wget https://github.com/libgd/libgd/releases/download/gd-2.2.3/libgd-2.2.3.tar.gz
   tar -xzvf libgd-2.2.3.tar.gz
   cd libgd-2.2.3

   ./configure \
   --prefix=/usr/lib64 \
   --with-jpeg=/usr/lib64 \
   --with-png=/usr.lib64 \
   --with-zlib \
   --with-freetype=/usr/lib64

   make && make install
   make clean && make distclean
   cd ../

7、php安装gd库

静态编译

    ./configure \
    --prefix=/usr/local/cp-php-5.6.19 \
    --with-apxs2=/usr/local/cp-httpd-2.4.18/bin/apxs \
    --with-mysql=mysqlnd \
    --with-mysqli=mysqlnd \
    --with-pdo-mysql=mysqlnd \
    --with-png-dir=/usr/lib64 \
    --with-jpeg-dir=/usr/lib64 \
    --with-freetype-dir=/usr/lib64 \
    --with-zlib-dir==/usr/lib64 \
    --with-xpm-dir=/usr/lib64/ \
    --with-gd=/usr/lib64 \
    --with-openssl \
    --with-curl \
    --with-config-file-path=/usr/local/cp-php-5.6.19/lib \
    --enable-calendar \
    --enable-mbstring \
    --enable-sockets \
    --enable-xml \
    --enable-json \
    --enable-pdo \
    --enable-libxml \
    --enable-simplexml \
    --enable-xmlreader \
    --enable-xmlwriter

动态编译

   cd php-5.6.19/ext/gd/
   phpize

   ./configure \
   --prefix=/usr/lib64 \
   --with-jpeg=/usr/lib64 \
   --with-png=/usr.lib64 \
   --with-zlib \
   --with-freetype=/usr/lib64

   make && make install
   make clean && make distclean
   cd ../

8、引用资料

http://php.net/manual/zh/image.installation.php

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