Assuming you are using PHP 7.2 version standalone or with cyberpanel and you need add WebP support:

yum install -y lsphp72-devel gcc libjpeg-turbo-devel libpng-devel libXpm-devel freetype-devel libwebp-devel
wget https://www.php.net/distributions/php-7.2.24.tar.gz
tar xzvf php-7.2.24.tar.gz

cd php-7.2.24
cd ext/gd
/usr/local/lsws/lsphp72/bin/phpize
/usr/local/lsws/lsphp72/bin/php-config
./configure --with-php-config=/usr/local/lsws/lsphp72/bin/php-config --with-webp-dir=/usr/include/webp --with-freetype-dir=/usr/include/freetype2/freetype --with-jpeg-dir=/usr/include --with-png-dir=/usr/include --with-xpm-dir=/usr/include
make
make install
pkill lsphp


This works for Google webP Image Converter Module