A native Windows port of the GNU Compiler Collection (GCC)
MinGW: A native Windows port of the GNU Compiler Collection (GCC), with freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All of MinGW's software will execute on the 64bit Windows platforms.
Dual-target(32 & 64-bit) MinGW-W64 compilers for 32 and 64-bit windows
Projects joined MinGW-W64, and the new builds will be available on the MinGW-W64(https://sourceforge.net/projects/mingw-w64) site.