GCC for Windows 64 & 32 bits


Mingw-w64 is an advancement of the original mingw.org project, created to support the GCC compiler on Windows systems. It has forked it in 2007 in order to provide support for 64 bits and new APIs. It has since then gained widespread use and distribution.

The development and community are very active and welcoming with new contributors every month and simple installers.

Version 6 has been released

v6.0.0: 2018-09-17

Notable changes:

  • C++ __cxa_atexit thanks to Martin Storsjö and Liu Hao
  • Massive additions to support UCRT thanks to Martin Storsjö
  • Sync COM interface headers with Wine development thanks to Jacek Caban
  • WinRT additions thanks to Hugo Beauzée-Luyssen
  • ARM32 and ARM64 additions thanks to Martin Storsjö
  • CRT library api-ms-win-core additions thanks to Martin Storsjö
  • CRT library def file reorganization thanks to Martin Storsjö
And many other additions thanks to, but not limited to (in Alphabetical order)

You can also look at the full list of versions.

Headers, Libraries and Runtime

  • More than a million lines of headers are provided, not counting generated ones, and regularly expanded to track new Windows APIs.
  • Everything needed for linking and running your code on Windows.
  • Winpthreads, a pthreads library for C++11 threading support and simple integration with existing project.
  • Winstorecompat, a work-in-progress convenience library that eases conformance with the Windows Store.
  • Better-conforming and faster math support compared to Visual Studio's.


  • gendef: generate Visual Studio .def files from .dll files.
  • genidl: generate .idl files from .dll files.
  • widl: compile .idl files.

Friend projects

Mingw-w64 interacts a lot with other projects in order to help everyone move forward. Contributions have been going to and coming from these projects:

Most Recent Activity

LH_Mouse committed [7f2392]

include: Regenerate configure.

LH_Mouse committed [f186f6]

include/GL: Update to a more recent Git version.

LH_Mouse committed [e8a895]

Update GL headers to git-6f5d3d0

LH_Mouse committed [d793e0]

include/KHR: Update to more recent Git version.

LH_Mouse committed [290ddf]

ntstrsafe.h: Remove incomplete header.

LH_Mouse committed [e80afb]

ntstrsafe.h: More fully implement.

Tanglor created ticket #802

OpenSSL fails to build with internal compiler error

Martin Storsjö committed [d95ace]

headers: Use the msvcrt/ucrt setjmp functions on ARM64 if SEH is available

Martin Storsjö committed [494dcb]

crt: Provide an empty implementation of __set_app_type for msvcr120_app.dll

Martin Storsjö committed [18249f]

crt: Merge msvcr120_app.def.in for 32 and 64 bit x86