BZIP2 Extension

Has anyone added the bzip2 extension to wordpress recently? I can’t seem to get it to work. I have created a php.ini file and I know its being loaded as my max file upload has gone up when I called phpinfo.
Once I knew the ini was loading;

I compiled libbz2.so in the ubuntu terminal and then uploaded it to the root folder.
I added the line
extension=libbz2.so
to the php.ini file.

I’m very new to this, any help would be very appreciated.