Use the following commands for installation on Linux with installed Apache httpd 2.4.x server and PHP 7.x:

phpize
./configure
make
sudo make install
sudo cp excel.ini /etc/php/7.4/mods-available   (replace 7.4 with 7.3 or 7.2 if you use a different PHP version)
sudo phpenmod excel
sudo apachectl restart

              