编译php-5.5.15出错，xml2-config not found

今天在centos上编译php-5.5.15，

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cd php-5.5.15

./configure --prefix=/usr/local/php/ --with-config-file-path=/usr/local/php/etc/ --enable-fpm

返回错误：

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checking libxml2 install dir... no

checking for xml2-config path...

configure: error: xml2-config not found. Please check your libxml2 installation.

说是libxml2没装，但是用yum安装时发现已经安装了

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[root@localhost process]# yum install libxml2

Loaded plugins: fastestmirror

Loading mirror speeds from cached hostfile

Setting up Install Process

Package libxml2-2.7.6-14.el6_5.2.i686 already installed and latest version

Nothing to do

查资料后发现原来还需要安装libxml2-devel，再次执行安装命令

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yum install libxml2* -y

再重新编译php，可以编译成功。
http://blog.csdn.net/haitun312366/article/details/38638335