Why does GCC-Windows depend on cygwin?

Question

I\'m not a C++ developer, but I\'ve always been interested in compilers, and I\'m interested in tinkering with some of the GCC stuff (particularly LLVM).

On Windows,

Answer 1

Because the people behing GCC hate Windows with a passion (read Stallman some day). So when porting GCC to Windows, they do their best to pretend it's just another Unix.

That, and they probably don't want to spend time on removing POSIX dependencies from the code.