今天用源码编译PHP的时候，发现依赖的东西比较多，就记录了一些我机器上遇到的问题，欢迎大家补充
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error: Cannot find OpenSSL's <evp.h>
yum install openssl-devel
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checking for BZip2 in default path... not found
configure: error: Please reinstall the BZip2 distribution
yum install bzip2-devel
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configure: error: jpeglib.h not found.
yum install -y libjpeg-devel
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configure: error: png.h not found.
yum install -y libpng-devel
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configure: error: freetype.h not found.
yum install -y freetype
yum install -y freetype-devel
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configure: error: mcrypt.h not found. Please reinstall libmcrypt.
yum install -y libmcrypt
yum install -y libmcrypt-devel
注：这两个包是从epel这个扩展有yum源安装的，如果没装epel的话，可能还要另外下载
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