A couple suggestions:
1) You should, as a general rule, not be running as "root." Put yourself in the "sudoers" file and (when you get to the "make install" step) use sudo make install.
2) As the error message said, you need to have a working compiler before you can compile anything, even your compiler.
So, how can you get a working compiler? The simplest way is to use the "update" tools that come with your distribution, for example, apt, rpm, etc. to install a compiler. (I don't use Mandrake, so I can't be specific. Ask in the Mandrake/Mandiva forum here if you need more help.)