编译PHP5.6.16时出现了这个错误：
Don‘t know how to define struct flock on this system, set --enable-opcache=no
解决方法：
ln -s /usr/local/mysql/lib/libmysqlclient.so /usr/lib/
ln -s /usr/local/mysql/lib/libmysqlclient.so.18 /usr/lib/libmysqlclient.so.18
本文出自 “兰州linux运维” 博客，请务必保留此出处http://linuxzkq.blog.51cto.com/9379412/1719580
PHP编译时错误解决：Don't know how to define struct flock on this system, set --enable-opcache=no
原文：http://linuxzkq.blog.51cto.com/9379412/1719580