【解决】undefined reference to 'apr_thread_rwlock_destory'、undefined reference to 'apr_initialize'

1、首选确认安装了apr及apr-util
否则报错“<apr-1/apr_xxx.h>”头文件找不到。

2、-lapr-1    -laprutil-1
添加库链接，否则报错：
undefined reference to 'apr_thread_rwlock_destory'
undefined reference to 'apr_initialize'