wget http://ftp.sunet.se/pub/gnu/gmp/gmp-4.2.2.tar.bz2 
tar -xjvf gmp-4.2.2.tar.bz2 
cd gmp-4.2.2 
./configure 
make 
make check 
make install 
 
vi /var/cpanel/easy/apache/rawopts/all_php5 
 
add 
 
--with-gmp 
 
to this file and recompile php with default settings 
 
/scripts/easyapache 
 
save and compile.
