Php with-gmp=shared

I have an application that requires GMP (

I see this in phpinfo on my site: with-gmp=shared

but when I run my app:

I get “GMP extension required.”

It’s a failure of extension_loaded(‘gmp’) that throws the error.

Is this something that I can do with shared hosting? If so, how do I fix this. If not, can I get this to work if I upgrade to VPS?