Install IMAP extension on Amazon Elastic Beanstalk PHP Amazon Linux 2 Platform

install.sh

#!/bin/bash

PATH=pwd
sudo yum groupinstall "Development Tools" -y
sudo amazon-linux-extras install epel -y
sudo  yum install epel-release
sudo yum install libc-client-devel uw-imap-static openssl-devel -y
sudo ln -s /usr/lib64/libc-client.a /usr/lib

cd ~
PHP_VERSION=$(php -r "echo PHP_VERSION;")

wget https://www.php.net/distributions/php-"${PHP_VERSION}".tar.gz

tar -xf php-"${PHP_VERSION}".tar.gz

cd php-"${PHP_VERSION}"/ext/imap

phpize

./configure --with-kerberos --with-imap-ssl
make

cd modules

sudo cp imap.so /usr/lib64/php/modules/
sudo touch /etc/php.d/30-imap.ini

sudo echo 'extension=imap.so' >> /etc/php.d/30-imap.ini

sudo systemctl restart php-fpm

sudo systemctl restart httpd

cd ${PATH}

A major bug in this script is using PATH as a temporary storage for the current path (pwd). It overwrites the paths to the commands and then the script doesn't know where "cd", "sudo", "yum", "amazon-linux-extras" are anymore. It is good to change paths to the users folder when building the imap.so file but make sure to use a variable that doesn't collide with the working system variables.