安装
github 地址：
https://github.com/kkos/oniguruma/
过程：
点击 tags，找到最新版本，寻找下载
cd /usr/local/src/php/
wget https://github.com/kkos/oniguruma/archive/v6.9.5_rc1.zip
unzip v6.9.5_rc1.zip
./autogen.sh && ./configure --prefix=/usr
# 错误
./autogen.sh: line 6: autoreconf: command not found
# 解决错误,
yum install autoconf automake libtool
make && make install
参考：
https://www.cnblogs.com/architectforest/p/12433640.html
24kplus.com/linux/1614.html