swoole 安装

https://my.oschina.net/u/583362/blog/682123
安装 gcc gcc-c++ 4.8 

yum --enablerepo=testing-devtools-2-centos-6 install devtoolset-2-gcc devtoolset-2-gcc-c++
yum -y install devtoolset-2-gcc-gfortran devtoolset-2-binutils
ln -s /opt/rh/devtoolset-2/root/usr/bin/* /usr/local/bin/

git clone git@github.com:swoole/swoole-src.git
cd swoole-src
/usr/local/php7.3.9/bin/phpize
./configure --enable-openssl --with-php-config=/usr/local/php7.3.9/bin/php-config CFLAGS=-fPIC
make && sudo make install

vi php.ini

extension=swoole.so