[Linuw] CygWin & MinGW

1. Cygwin
   Make user get that Linux feeling - on Windows!
   Cygwin is:
   
   • a collection of tools which provide a Linux look and feel environment for Windows.
   • a DLL (cygwin1.dll) which acts as a Linux API layer providing substantial Linux API functionality.
   
   Cygwin is not:
   
   • a way to run native Linux apps on Windows. You must rebuild your application from source if you want it to run on Windows.
   • a way to magically make native Windows apps aware of UNIX® functionality like signals, ptys, etc. Again, you need to build your apps from source if you want to take advantage of Cygwin functionality.
   
   
2. MinGW
   MinGW, a contraction of "Minimalist GNU for Windows", is a minimalist development environment for native Microsoft Windows applications. MinGW includes:
   
   • A port of the GNU Compiler Collection (GCC), including C, C++, ADA and Fortran compilers;
   • GNU Binutils for Windows (assembler, linker, archive manager)
   • A graphical and a command-line installer for MinGW and MSYS deployment on MS-Windows
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