错误
You must install libopus-dev to build mod_opus
解决办法一：自行编译安装
https://blog.csdn.net/quantum7/article/details/104087104
解决办法二：安装依赖库(无效)
yum install -y opus-devel export PKG_CONFIG_PATH=/usr/lib64/pkgconfig:/usr/local/lib/pkgconfig:/usr/local/lib64/pkgconfig:${PKG_CONFIG_PATH}
解决办法三：去掉
比如freeswitch,modules.conf
codecs/mod_opus
