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

Andéol Evain posted a comment on ticket #737

I was using version 8.1.0, and was unaware version 9 aven existed. I installed Mingw as a standalone. I'll try installing with msys2. Thanks a lot.

Jordi Vilar posted a comment on ticket #737

This is fixed in version 9.x. Unfortunately, there is no mingw-w64 build for version 9.x here. As Chris suggested, msys2 includes it. But it would be very convenient to have it also here as usual.

Chris posted a comment on ticket #737

This is no longer a bug. Where are you installing mingw from? Use msys2.

LH_Mouse committed [5ace93]

include/cfgmgr32.h: add CM_Get_DevNode_PropertyW

LH_Mouse committed [f62a83]

include/devpkey.h: add device property keys

LH_Mouse committed [4fc998]

include/{cfgmgr32,devpkey}.h: Add a missing `#include <devpropdef.h>`

Andéol Evain posted a comment on ticket #737

We are having the same issue here. Looking forward to see these patches included in a MinGW update.

LH_Mouse committed [1bb9df]

include/winnetwk: Fix oversighted BOOL in function proto

Paul A Bristow posted a comment on discussion Open Discussion

I would also like to continue using MinGW-w64 standalone builds for using GCC on Windows that I use for simulartaneously testing the Boost libraries using GCC and Clang (and MSVC of course) compilers on Windows. So I loudly join this plea for release of recent GCC releases, especially, for me, the most recent GCC 9 that contains important new constexpr code that provides vital improvements to the code that can be done at compile-time, making a massive run-time improvement (that is NO-time ;-) ) to...

LH_Mouse committed [a1b157]

headers: _FORTIFY_SOURCE: Allow to limit level for individual functions.