php7怎么安装 mbstring 扩展

cd /home/work/study/softpackage/php-7.4.4/ext/mbstring

/home/work/study/soft/php/bin/phpize

yum install -y oniguruma oniguruma-devel

./configure --with-php-config=/usr/local/php/bin/php-config
make && make install

vim /home/work/study/soft/php/lib/php.ini

extension_dir="/home/work/study/soft/php/lib/php/extensions/no-debug-non-zts-20190902/"
extension=mbstring.so

pkill -9 php-fpm
php-fpm

No package 'oniguruma' found
yum install -y oniguruma oniguruma-devel