<VirtualHost *:80>
    ServerName example.com
    ScriptAlias "/cgi-bin/" "/opt/example/lib/"
    ProxyRequests Off
    <Proxy *>
        Order deny,allow
        Allow from all
    </Proxy>
    ProxyPreserveHost On
    ProxyPass /bar http://x.x.x.x/bar
    ProxyPassReverse /bar http://x.x.x.x/bar
</VirtualHost>

Alias /foo /opt/example/script/fastcgi.pl/

<Directory "/opt/example/lib/">
    Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
    Require all granted
    AddHandler cgi-script .pl
    SetHandler cgi-script
</Directory>

FastCgiServer /opt/example/script/fastcgi.pl -processes 3 -idle-timeout 3600

<Directory "/opt/example/script/">
    Require all granted
</Directory>

<VirtualHost *:80>
    ServerName example2.com
    ScriptAlias "/cgi-bin/" "/opt/example/lib/"
</VirtualHost>

Alias /bar /opt/example/script/fastcgi.pl/

<Directory "/opt/example/lib/">
    Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
    Require all granted
    AddHandler cgi-script .pl
    SetHandler cgi-script
</Directory>

FastCgiServer /opt/example/script/fastcgi.pl -processes 3 -idle-timeout 3600

<Directory "/opt/example/script/">
    Require all granted
</Directory>