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linux下编译GD（freetype+libjpeg+libpng+gd-devel）
1、检查freetype是否安装
rpm -qa | grep freetype
没有的话编译freetype 这里下载
https://www.freetype.org/download.html
http://download.savannah.gnu.org/releases/freetype/
./configure --prefix=/usr/local/freetype
make && make install 即可，没有花头
2、检查libjpeg是否安装
rpm -qa | grep libjpeg
没有的话编译libjpeg 这里下载
我也没装libjpeg，下载好开始编译
jpegsrc.v6b.tar.gz
tar -xzvf jpegsrc.v6b.tar.gz
cd jpeg-6b/
./configure --prefix=/usr/local/jpeg --enable-shared
make && make install
最后一步make install 出错：
/usr/bin/install -c -m 644 jconfig.h /usr/local/jpeg/include/jconfig.h
/usr/bin/install: cannot create regular file `/usr/local/jpeg/include/jconfig.h‘: No such file or directory
make: *** [install-headers] Error 1
/usr/bin/install: cannot create regular file `/usr/local/jpeg/lib/libjpeg.so.62.0.0‘: No such file or directory
/usr/bin/install: cannot create regular file `/usr/local/jpeg/bin/cjpeg‘: No such file or directory
make: *** [install-lib] Error 1
难道安装程序自己新建一下目录都不行？？晕，我自己去新建目录
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
OK再编译就成功了
3、检查是否安装了libpng
rpm -qa libpng
没有的话编译libpng 这里下载
./configure --prefix=/usr/local/png
make && make install
4、安装GD库 这里下载
tar -zxvf gd-2.0.35.tar.gz
cd gd-2.0.35
./configure --prefix=/usr/local/gd2 --with-freetype-dir=/usr/local/freetype
5、编译PHP 这里下载
tar -zxvf php-5.2.5.tar.gz
cd php-5.2.5
./configure --with-apxs2=/usr/local/apache2/bin/apxs --with-mysql --with-zlib --with-jpeg-dir=/usr/local/jpeg --with-png-dir=/usr/local/png --with-freetype-dir=/usr/local/freetype --enable-ftp --enable-sockets --with-gd=/usr/local/gd2 --enable-gd-native-ttf --with-ttf --enable-magic-quotes --with-iconv -enable-mbstring=all
OK 全部完成
PS：如果安装有报错:
configure.ac:64: error: possibly undefined macro: AM_ICONV
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
make: *** [configure] Error 1
需要安装gettext 这里下载
linux下编译GD（freetype+libjpeg+libpng+gd-devel）
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原文地址：http://www.cnblogs.com/zqifa/p/linux-php-4.html
