下载编译安装libsodium

wget https://download.libsodium.org/libsodium/releases/libsodium-1.0.18-stable.tar.gz
tar -zxf libsodium-1.0.18-stable.tar.gz
cd libsodium-stable
./configure --without-libsodium
make && make check
sudo make install

下载编译安装sodium

yum install autoconf
wget https://www.php.net/distributions/php-7.4.21.tar.gz
tar xf php-7.4.21.tar.gz
cd php-7.4.21/ext/sodium

核对导入/usr/lib/pkgconfig路径

export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
echo $PKG_CONFIG_PATH

安装扩展

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

安装成功

修改php.ini添加扩展

extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20190902"
extension=sodium.so

重启php-fpm

systemctl restart php-fpm

查看是否安装成功

php -m | grep sod

安装过程中如果出现

configure: error: Package requirements (libsodium >= 1.0.8) were not met:  No package 'libsodium' found

这样的问题需要确认 安装libsodium时是否执行了 ./configure --without-libsodium

参考链接：configure: error: Package requirements (libsodium) were not met: No package 'libsodium' found-CSDN博客