[Mono-list] how is the compiler / class libraries compiled over Linux?

[Piyush, Garyali (IE10)]

Hi,

I had a doubt:

In case of Cygwin we use the .NET Framework's 'csc' to build the 'mcs' and
then 'mcs' is used to build the class libraries.

In case of Linux we don't have the .NET Framework, so how does the compiler
[mcs] get built?? [as it is purely is C#]

Thx in adv,
~pg