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 8 has been released

v8.0.0: 2020-09-18

Notable changes:

  • New Hyper-V headers and libraries by Biswapriyo Nath
  • Many headers updated from Wine by Jacek Caban.
  • ARM math improvements by Martin Storsjö
  • floating point fixes by Liu Hao
  • many *printf compatibility fixes by Liu Hao and Martin Storsjö
  • massive Windows App Store API updates by Steve Lhomme
  • winstorecompat library updates by Martin Storsjö
  • __USE_MINGW_ANSI_STDIO now automatically enabled in C99 and C11 mode when not using UCRT by Pali Rohár
  • wdm and ddk updates by Zebediah Figura
  • UCRT for Windows Store Apps (-lucrtapp) by Martin Storsjö
  • Audioclient and ActivateAudioInterfaceAsync API updates by Liu Hao
  • DirectX SDKs are now always installed
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

Conan Librrn modified a comment on discussion Help

Edit: I figured it out. The problem was with my make.exe hack. I changed the reference in my build system to call mingw32-make.exe directly rather than forwarding arguments from a fake make.exe and it works now. I had gotten that advice about forwarding off the internet somewhere, but it's not a good solution for my case. I'm not clear on the Wiki2 advice for using make: https://sourceforge.net/p/mingw-w64/wiki2/Make/ Just copy any of the *make.exe files to <mingw64>\bin and you're good to go.</mingw64>...

Conan Librrn posted a comment on discussion Help

I'm not clear on the Wiki2 advice for using make: https://sourceforge.net/p/mingw-w64/wiki2/Make/ Just copy any of the *make.exe files to <mingw64>\bin and you're good to go.</mingw64> Where do those files come from? Do I download or build them? If I need to build them, could anyone kindly link instructions that will work for 64-bit Windows? Using mingw32_make.exe results in the error message: This version of C:\Program Files\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin\make.exe is not...

DOUG NULL posted a comment on discussion Open Discussion

I need to have my Windows MinGW-w64 client do full duplex communication with my iOS app (on iPhone).

Jose Fonseca posted a comment on ticket #892

https://github.com/Microsoft/DirectXTK/wiki/ComPtr#constructing-assigning-and-copying-comptr also makes this explicit. It says: If you want to give a raw pointer to a ComPtr without changing the reference count, you need to use Attach.

Jose Fonseca created ticket #892

Microsoft::WRL::ComPtr::Attach leaks references

Ozkan Sezer committed [f1c6e1]

Updated imported headers to current Wine version.

Ozkan Sezer committed [200e01]

dwmapi.def: Regenegerate from Windows 10

Ozkan Sezer committed [a911a4]

Implement IAMAsyncReaderTimestampScaling and IAMPluginControl using IDL.

Martin Storsjö committed [1c7738]

headers: Hide _IO* flags in UCRT mode.

LH_Mouse committed [75d2db]

include/crt: Use GCC predefined macros instead of MSVC-ish ones